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ConcurrentModificationException in the compiler #12726

Closed noresttherein closed 1 year ago

noresttherein commented 1 year ago

Scala 2.13.10

Now this is something I haven't seen. StackOverflowError sure, half a dozen a day, I can understand them. But this?

java.util.ConcurrentModificationException: mutation occurred during iteration
    at scala.collection.mutable.MutationTracker$.checkMutations(MutationTracker.scala:43)
    at scala.collection.mutable.MutationTracker$CheckedIterator.hasNext(MutationTracker.scala:59)
    at scala.collection.IterableOnceOps.foreach(IterableOnce.scala:575)
    at scala.collection.IterableOnceOps.foreach$(IterableOnce.scala:573)
    at scala.collection.AbstractIterable.foreach(Iterable.scala:933)
    at scala.tools.nsc.typechecker.Analyzer$typerFactory$TyperPhase.apply(Analyzer.scala:120)
    at scala.tools.nsc.Global$GlobalPhase.applyPhase(Global.scala:467)
    at scala.tools.nsc.typechecker.Analyzer$typerFactory$TyperPhase.run(Analyzer.scala:106)
    at scala.tools.nsc.Global$Run.compileUnitsInternal(Global.scala:1530)
    at scala.tools.nsc.Global$Run.compileUnits(Global.scala:1514)
    at scala.tools.nsc.Global$Run.compileSources(Global.scala:1506)
    at scala.tools.nsc.Global$Run.compileFiles(Global.scala:1619)
    at xsbt.CachedCompiler0.run(CompilerBridge.scala:163)
    at xsbt.CachedCompiler0.run(CompilerBridge.scala:134)
    at xsbt.CompilerBridge.run(CompilerBridge.scala:39)
    at sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:91)

I haven't a faintest idea in what class, file or even package this happens, so I have no way of extracting it. Maybe it will tell something to someone. Any ideas of how to look for clues? I have about every logging option enabled which doesn't throw an AssertionError, or NullPointerException itself. Unfortunately, the last line from -Ylog:0-100 seems to be from a successfully processed file (I got a summary of warnings for the file), so I am at a loss.

som-snytt commented 1 year ago

Probably it's the post-typer checks, unit.toCheck, that is getting updated during iteration.

There was just an unrelated improvement in that mechanism.

SethTisue commented 1 year ago

ha, I haven't seen this one before either.

the code in question (in Analyzer.scala), for (workItem <- unit.toCheck) workItem(), where toCheck is a ListBuffer of thunks and there are various sites elsewhere where we do unit.toCheck += ..., fails thanks to https://github.com/scala/scala/pull/9174 (merged in Scala 2.13.4)

som-snytt commented 1 year ago

I get to say jinx before Seth does?

SethTisue commented 1 year ago

I owe @som-snytt a Coke

it looks like we could make the code in question safe pretty easily, and without noticeably impacting performance (it's very much an outer loop), by replacing

for (workItem <- unit.toCheck) workItem()

with something like

while (unit.toCheck.nonEmpty) {
  val items = unit.toCheck.toList
  unit.toCheck.clear()
  for (workItem <- items) workItem()
}

that kind of thing

I am swamped this week, perhaps someone else would like to jump on it first?

som-snytt commented 1 year ago

These are checks run (currently) after a file is typechecked (and just before unused warnings), so it should (perhaps) be obvious from debug output which file was just typechecked. A reproduction would be nice. I'll volunteer the easy fix as proposed.

noresttherein commented 1 year ago

Yes, I do have output giving a strong indication of what has been just typechecked. But I have no idea what can I do to improve this issue on my side? Of course, as far as reproduction goes, I can link a commit in my project which fails, but

  1. It's a fairly large project
  2. Very complex for the type checker in general
  3. And there are currently 100+ legitimate compiler issues on top of that one So I did not think anyone would be interested, especially that you seem to zoned in on the issue pretty well without it.
noresttherein commented 1 year ago

Can I somehow compile just those two files against current 2.13.10 and put them in bootclasspath?

som-snytt commented 1 year ago

I don't know the simplest way to put a couple of class files on sbt's class path, if that is the question.

Usually I wind up publishing a local jar to include in the build.

I will try to enumerate when it adds "post-typer" work items and which might incur such tasks recursively. I think if it tries to add a work item after typer has run, it should just execute it immediately. (I tried the enumeration yesterday but fell asleep.)

noresttherein commented 1 year ago

I was asking if the two files will pose any conflicts with the existing code base, or can I just replace those two without making my own version of the compiler, but I see I can't, there is a ClassCastException.

SethTisue commented 1 year ago

Once there's an open PR, you'll be able to test the PR validation snapshot; and once the PR is merged, you'll be able to use the next nightly.

noresttherein commented 1 year ago

Out of the fire and into the frying pan... I cloned @som-snytt's repo and built from the branch with the fix. Now the compiler just hangs indefinitely on the same file (uses a lot of CPU, so in an infinite loop, looks like it). More precisely, it does not print anything for the file the processing of which was throwing the exception, just the one before it.

SethTisue commented 1 year ago

A JVM thread dump would show where in the compiler code the cycle is.

Perhaps the same file is getting adding to toCheck over and over again forever; a println would diagnose that.

som-snytt commented 1 year ago

It doesn't try to run "extra" checks but errors. (I haven't concocted a test yet.)

If @noresttherein points me to a repo, I'd be happy to give it a shot. The PR includes extra enhancements, any breakage is possible.

I see activity on sugar, is the problematic state pushed to the repo?

Also, are you quite sure you don't want to call it sugah?

noresttherein commented 1 year ago

Sorry, it was getting late yesterday and I just didn't have the strength to tackle it. I attached a dubugger to @som-snytt's commit branch for this issue, and the recursion in isSubtype goes as follows:

  1. tp1=_, tp2=_
  2. tp1=_, tp2=IndexedMapping[_, Unit]#Subject
  3. tp1=IndexedMapping[_, Unit]#Subject, tp2=_
  4. tp1=IndexedMapping[_, Unit]#Subject, tp2=IndexedMapping[_, Unit]#Subject
  5. tp1=_, tp2=_ It is important to know that: 
    trait IndexedMapping[S, O]  extends ... {
    type Subject = S
    ...   
}

    I suspect there may be an abstract type projection going on here. However, it is not a simple 4-step recursion: these four parameter combinations, and no other, repeat themselves, but in varying order, and I have troubles noticing a pattern. If anyone has an idea how I can do a stack dump together with values of all parameters (including AnyRef types on the heap), in a readable format, I'd be happy to do it.

Here is the stack trace of the compiler thread:

"NGSession 1: 127.0.0.1: compile@6954" tid=0x17 nid=NA runnable
  java.lang.Thread.State: RUNNABLE
      at scala.reflect.internal.tpe.TypeComparers.isSubType(TypeComparers.scala:268)
      at scala.reflect.internal.tpe.TypeComparers.isSubType$(TypeComparers.scala:267)
      at scala.reflect.internal.SymbolTable.isSubType(SymbolTable.scala:28)
      at scala.reflect.internal.Types$Type.$less$colon$less(Types.scala:809)
      at scala.reflect.internal.Types$TypeBounds.containsType(Types.scala:1551)
      at scala.reflect.internal.Types.$anonfun$isWithinBounds$4(Types.scala:4978)
      at scala.reflect.internal.Types.$anonfun$isWithinBounds$4$adapted(Types.scala:4977)
      at scala.reflect.internal.Types$$Lambda$1127/0x00000008014f6dc0.apply(Unknown Source:-1)
      at scala.collection.immutable.List.corresponds(List.scala:437)
      at scala.reflect.internal.Types.isWithinBounds(Types.scala:4977)
      at scala.reflect.internal.Types.isWithinBounds$(Types.scala:4968)
      at scala.reflect.internal.SymbolTable.isWithinBounds(SymbolTable.scala:28)
      at scala.reflect.internal.Types$ExistentialType.withTypeVars(Types.scala:3207)
      at scala.reflect.internal.tpe.TypeComparers.thirdTry$1(TypeComparers.scala:552)
      at scala.reflect.internal.tpe.TypeComparers.secondTry$1(TypeComparers.scala:519)
      at scala.reflect.internal.tpe.TypeComparers.firstTry$1(TypeComparers.scala:495)
      at scala.reflect.internal.tpe.TypeComparers.isSubType2(TypeComparers.scala:615)
      at scala.reflect.internal.tpe.TypeComparers.isSubType1(TypeComparers.scala:347)
      at scala.reflect.internal.tpe.TypeComparers.isSubType(TypeComparers.scala:305)
      at scala.reflect.internal.tpe.TypeComparers.isSubType$(TypeComparers.scala:267)
      at scala.reflect.internal.SymbolTable.isSubType(SymbolTable.scala:28)
      at scala.reflect.internal.Types.isSubArg$1(Types.scala:4765)
      at scala.reflect.internal.Types.$anonfun$isSubArgs$1(Types.scala:4768)
      at scala.reflect.internal.Types.$anonfun$isSubArgs$1$adapted(Types.scala:4768)
      at scala.reflect.internal.Types$$Lambda$1316/0x000000080153fda0.apply(Unknown Source:-1)
      at scala.reflect.internal.util.Collections.corresponds3(Collections.scala:33)
      at scala.reflect.internal.util.Collections.corresponds3$(Collections.scala:30)
      at scala.reflect.internal.SymbolTable.corresponds3(SymbolTable.scala:28)
      at scala.reflect.internal.Types.isSubArgs(Types.scala:4768)
      at scala.reflect.internal.Types.isSubArgs$(Types.scala:4762)
      at scala.reflect.internal.SymbolTable.isSubArgs(SymbolTable.scala:28)
      at scala.reflect.internal.tpe.TypeComparers.firstTry$1(TypeComparers.scala:470)
      at scala.reflect.internal.tpe.TypeComparers.isSubType2(TypeComparers.scala:615)
      at scala.reflect.internal.tpe.TypeComparers.isSubType1(TypeComparers.scala:347)
      at scala.reflect.internal.tpe.TypeComparers.isSubType(TypeComparers.scala:305)
      at scala.reflect.internal.tpe.TypeComparers.isSubType$(TypeComparers.scala:267)
      at scala.reflect.internal.SymbolTable.isSubType(SymbolTable.scala:28)
      at scala.reflect.internal.Types$Type.$less$colon$less(Types.scala:809)
      at scala.tools.nsc.typechecker.Infer$Inferencer.inferTypedPattern(Infer.scala:1281)
      at scala.tools.nsc.typechecker.PatternTypers$PatternTyper.typedInPattern(PatternTypers.scala:194)
      at scala.tools.nsc.typechecker.PatternTypers$PatternTyper.typedInPattern$(PatternTypers.scala:181)
      at scala.tools.nsc.typechecker.Typers$Typer.typedInPattern(Typers.scala:203)
      at scala.tools.nsc.typechecker.Typers$Typer.typedTyped$1(Typers.scala:5763)
      at scala.tools.nsc.typechecker.Typers$Typer.typedInAnyMode$1(Typers.scala:6027)
      at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:6041)
      at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:6080)
      at scala.tools.nsc.typechecker.Typers$Typer.typedBind$1(Typers.scala:4663)
      at scala.tools.nsc.typechecker.Typers$Typer.typedInAnyMode$1(Typers.scala:6023)
      at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:6041)
      at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:6080)
      at scala.tools.nsc.typechecker.Typers$Typer.$anonfun$typedPattern$2(Typers.scala:6259)
      at scala.tools.nsc.typechecker.Typers$Typer$$Lambda$1145/0x00000008014fa930.apply(Unknown Source:-1)
      at scala.tools.nsc.typechecker.Contexts$Context.withMode(Contexts.scala:609)
      at scala.tools.nsc.typechecker.Contexts$Context.withImplicitsDisabledAllowEnrichment(Contexts.scala:615)
      at scala.tools.nsc.typechecker.Typers$Typer.$anonfun$typedPattern$1(Typers.scala:6259)
      at scala.tools.nsc.typechecker.Typers$Typer$$Lambda$1144/0x00000008014fa688.apply(Unknown Source:-1)
      at scala.tools.nsc.typechecker.TypeDiagnostics.typingInPattern(TypeDiagnostics.scala:71)
      at scala.tools.nsc.typechecker.TypeDiagnostics.typingInPattern$(TypeDiagnostics.scala:68)
      at scala.tools.nsc.Global$$anon$6.typingInPattern(Global.scala:511)
      at scala.tools.nsc.typechecker.Typers$Typer.typedPattern(Typers.scala:6259)
      at scala.tools.nsc.typechecker.Typers$Typer.typedCase(Typers.scala:2604)
      at scala.tools.nsc.typechecker.Typers$Typer.$anonfun$typedCases$1(Typers.scala:2638)
      at scala.tools.nsc.typechecker.Typers$Typer$$Lambda$1141/0x00000008014ff680.apply(Unknown Source:-1)
      at scala.collection.immutable.List.loop$3(List.scala:472)
      at scala.collection.immutable.List.mapConserve(List.scala:497)
      at scala.tools.nsc.typechecker.Typers$Typer.typedCases(Typers.scala:2637)
      at scala.tools.nsc.typechecker.Typers$Typer.typedMatch(Typers.scala:2649)
      at scala.tools.nsc.typechecker.Typers$Typer.typedVirtualizedMatch$1(Typers.scala:4805)
      at scala.tools.nsc.typechecker.Typers$Typer.typedOutsidePatternMode$1(Typers.scala:6003)
      at scala.tools.nsc.typechecker.Typers$Typer.typedInAnyMode$1(Typers.scala:6034)
      at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:6041)
      at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:6080)
      at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:6169)
      at scala.tools.nsc.typechecker.Typers$Typer.typedCase(Typers.scala:2619)
      at scala.tools.nsc.typechecker.Typers$Typer.$anonfun$typedCases$1(Typers.scala:2638)
      at scala.tools.nsc.typechecker.Typers$Typer$$Lambda$1141/0x00000008014ff680.apply(Unknown Source:-1)
      at scala.collection.immutable.List.loop$3(List.scala:472)
      at scala.collection.immutable.List.mapConserve(List.scala:497)
      at scala.tools.nsc.typechecker.Typers$Typer.typedCases(Typers.scala:2637)
      at scala.tools.nsc.typechecker.Typers$Typer.typedMatch(Typers.scala:2649)
      at scala.tools.nsc.typechecker.Typers$Typer.typedVirtualizedMatch$1(Typers.scala:4805)
      at scala.tools.nsc.typechecker.Typers$Typer.typedOutsidePatternMode$1(Typers.scala:6003)
      at scala.tools.nsc.typechecker.Typers$Typer.typedInAnyMode$1(Typers.scala:6034)
      at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:6041)
      at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:6080)
      at scala.tools.nsc.typechecker.Typers$Typer.typedBlock(Typers.scala:2579)
      at scala.tools.nsc.typechecker.Typers$Typer.$anonfun$typed1$108(Typers.scala:5998)
      at scala.tools.nsc.typechecker.Typers$Typer$$Lambda$955/0x00000008014b2660.apply(Unknown Source:-1)
      at scala.tools.nsc.typechecker.Typers$Typer.typerWithLocalContext(Typers.scala:501)
      at scala.tools.nsc.typechecker.Typers$Typer.typedOutsidePatternMode$1(Typers.scala:5998)
      at scala.tools.nsc.typechecker.Typers$Typer.typedInAnyMode$1(Typers.scala:6034)
      at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:6041)
      at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:6080)
      at scala.tools.nsc.typechecker.Typers$Typer.transformedOrTyped(Typers.scala:6344)
      at scala.tools.nsc.typechecker.Typers$Typer.typedDefDef(Typers.scala:2400)
      at scala.tools.nsc.typechecker.Typers$Typer.typedMemberDef$1(Typers.scala:5986)
      at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:6040)
      at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:6080)
      at scala.tools.nsc.typechecker.Typers$Typer.typedByValueExpr(Typers.scala:6158)
      at scala.tools.nsc.typechecker.Typers$Typer.typedStat$1(Typers.scala:3279)
      at scala.tools.nsc.typechecker.Typers$Typer.$anonfun$typedStats$8(Typers.scala:3426)
      at scala.tools.nsc.typechecker.Typers$Typer$$Lambda$931/0x00000008014ac670.apply(Unknown Source:-1)
      at scala.collection.immutable.List.loop$3(List.scala:472)
      at scala.collection.immutable.List.mapConserve(List.scala:497)
      at scala.tools.nsc.typechecker.Typers$Typer.typedStats(Typers.scala:3426)
      at scala.tools.nsc.typechecker.Typers$Typer.typedTemplate(Typers.scala:2073)
      at scala.tools.nsc.typechecker.Typers$Typer.typedClassDef(Typers.scala:1911)
      at scala.tools.nsc.typechecker.Typers$Typer.typedMemberDef$1(Typers.scala:5987)
      at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:6040)
      at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:6080)
      at scala.tools.nsc.typechecker.Typers$Typer.typedByValueExpr(Typers.scala:6158)
      at scala.tools.nsc.typechecker.Typers$Typer.typedStat$1(Typers.scala:3279)
      at scala.tools.nsc.typechecker.Typers$Typer.$anonfun$typedStats$8(Typers.scala:3426)
      at scala.tools.nsc.typechecker.Typers$Typer$$Lambda$931/0x00000008014ac670.apply(Unknown Source:-1)
      at scala.collection.immutable.List.loop$3(List.scala:472)
      at scala.collection.immutable.List.mapConserve(List.scala:497)
      at scala.tools.nsc.typechecker.Typers$Typer.typedStats(Typers.scala:3426)
      at scala.tools.nsc.typechecker.Typers$Typer.typedPackageDef$1(Typers.scala:5670)
      at scala.tools.nsc.typechecker.Typers$Typer.typedMemberDef$1(Typers.scala:5990)
      at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:6040)
      at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:6080)
      at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:6156)
      at scala.tools.nsc.typechecker.Analyzer$typerFactory$TyperPhase.apply(Analyzer.scala:127)
      at scala.tools.nsc.Global$GlobalPhase.applyPhase(Global.scala:480)
      at scala.tools.nsc.typechecker.Analyzer$typerFactory$TyperPhase.run(Analyzer.scala:110)
      at scala.tools.nsc.Global$Run.compileUnitsInternal(Global.scala:1543)
      at scala.tools.nsc.Global$Run.compileUnits(Global.scala:1527)
      at scala.tools.nsc.Global$Run.compileSources(Global.scala:1519)
      at scala.tools.nsc.Global$Run.compileFiles(Global.scala:1632)
      at xsbt.CachedCompiler0.run(CompilerBridge.scala:163)
      at xsbt.CachedCompiler0.run(CompilerBridge.scala:134)

How to make a collapsible element here?

noresttherein commented 1 year ago

Sorry, concurrent posts. No, sugar is very well-behaved. The one written in my blood and tears is https://github.com/noresttherein/oldsql/. Branch scalac-crash-12726. As I mentioned early on, it is an end of a refactor and I am inching forward through countless errors, so sorry about that. I named the version from your commit 2.13.10-patch, so you'll have to put the artifacts in your repo.

Now that I know the file (SelectSQL) and have a lead, I'll try to find the problematic spot. Hopefully it is an error on my side (although of course it would be nice if the compiler reacted differently).

I am not sure however that it is even related to this issue, although I find it suspect that neither of the lists of processed (i.e. listed warnings and errors) files in pure 2.13.10 and the patch are a prefix of the other - in official 2.13.10 the last output was for RelationSQL, and, judging by typer logs, it was done with it.

som-snytt commented 1 year ago

Thanks, I'll take a casual look. I know lrytz likes to debugger the compiler, so maybe I will go down that path.

Your project link is lunked. (I just made up that word. I was redeploying lunk as in lunkhead, but there's also a word lunker for a big fish, TIL.)

Edit: by lunked, I mean the URL is munged in the link.

I can reproduce the CME against HEAD easily, now I'll try the supposed fix.

som-snytt commented 1 year ago

I also had to search for markdown collapse, after searching in vain for an old dotty ticket to demonstrate it. Use details tag with summary tag inside for description.

A long stacktrace while trying to log a type [info] [log typer] inconsistent bounds: discarding TypeBounds(RS&0, .this.net.noresttherein.oldsql.sql.SQLExpression.Grouped) java.lang.Throwable at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:43) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.reflect.internal.Types$TypeVar.safeToString(Types.scala:3770) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.collection.IterableOnceOps.addString(IterableOnce.scala:1246) at scala.collection.IterableOnceOps.addString$(IterableOnce.scala:1241) at scala.collection.AbstractIterable.addString(Iterable.scala:933) at scala.collection.IterableOnceOps.mkString(IterableOnce.scala:1191) at scala.collection.IterableOnceOps.mkString$(IterableOnce.scala:1189) at scala.collection.AbstractIterable.mkString(Iterable.scala:933) at scala.reflect.internal.Types$TypeRef.argsString(Types.scala:2636) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at scala.reflect.internal.Types$Type.prefixString(Types.scala:927) at scala.reflect.internal.Types$TypeRef.prefixString(Types.scala:2708) at scala.reflect.internal.Types$TypeRef.preString(Types.scala:2635) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.reflect.internal.Types$TypeVar.safeToString(Types.scala:3770) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.collection.IterableOnceOps.addString(IterableOnce.scala:1246) at scala.collection.IterableOnceOps.addString$(IterableOnce.scala:1241) at scala.collection.AbstractIterable.addString(Iterable.scala:933) at scala.collection.IterableOnceOps.mkString(IterableOnce.scala:1191) at scala.collection.IterableOnceOps.mkString$(IterableOnce.scala:1189) at scala.collection.AbstractIterable.mkString(Iterable.scala:933) at scala.reflect.internal.Types$TypeRef.argsString(Types.scala:2636) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at scala.reflect.internal.Types$Type.prefixString(Types.scala:927) at scala.reflect.internal.Types$TypeRef.prefixString(Types.scala:2708) at scala.reflect.internal.Types$TypeRef.preString(Types.scala:2635) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.reflect.internal.Types$TypeVar.safeToString(Types.scala:3770) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.collection.IterableOnceOps.addString(IterableOnce.scala:1246) at scala.collection.IterableOnceOps.addString$(IterableOnce.scala:1241) at scala.collection.AbstractIterable.addString(Iterable.scala:933) at scala.collection.IterableOnceOps.mkString(IterableOnce.scala:1191) at scala.collection.IterableOnceOps.mkString$(IterableOnce.scala:1189) at scala.collection.AbstractIterable.mkString(Iterable.scala:933) at scala.reflect.internal.Types$TypeRef.argsString(Types.scala:2636) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at scala.reflect.internal.Types$Type.prefixString(Types.scala:927) at scala.reflect.internal.Types$TypeRef.prefixString(Types.scala:2708) at scala.reflect.internal.Types$TypeRef.preString(Types.scala:2635) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.reflect.internal.Types$TypeVar.safeToString(Types.scala:3770) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.collection.IterableOnceOps.addString(IterableOnce.scala:1246) at scala.collection.IterableOnceOps.addString$(IterableOnce.scala:1241) at scala.collection.AbstractIterable.addString(Iterable.scala:933) at scala.collection.IterableOnceOps.mkString(IterableOnce.scala:1191) at scala.collection.IterableOnceOps.mkString$(IterableOnce.scala:1189) at scala.collection.AbstractIterable.mkString(Iterable.scala:933) at scala.reflect.internal.Types$TypeRef.argsString(Types.scala:2636) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at scala.reflect.internal.Types$Type.prefixString(Types.scala:927) at scala.reflect.internal.Types$TypeRef.prefixString(Types.scala:2708) at scala.reflect.internal.Types$TypeRef.preString(Types.scala:2635) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.reflect.internal.Types$TypeVar.safeToString(Types.scala:3770) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.collection.IterableOnceOps.addString(IterableOnce.scala:1246) at scala.collection.IterableOnceOps.addString$(IterableOnce.scala:1241) at scala.collection.AbstractIterable.addString(Iterable.scala:933) at scala.collection.IterableOnceOps.mkString(IterableOnce.scala:1191) at scala.collection.IterableOnceOps.mkString$(IterableOnce.scala:1189) at scala.collection.AbstractIterable.mkString(Iterable.scala:933) at scala.reflect.internal.Types$TypeRef.argsString(Types.scala:2636) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at scala.reflect.internal.Types$Type.prefixString(Types.scala:927) at scala.reflect.internal.Types$TypeRef.prefixString(Types.scala:2708) at scala.reflect.internal.Types$TypeRef.preString(Types.scala:2635) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.reflect.internal.Types$TypeVar.safeToString(Types.scala:3770) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.collection.IterableOnceOps.addString(IterableOnce.scala:1246) at scala.collection.IterableOnceOps.addString$(IterableOnce.scala:1241) at scala.collection.AbstractIterable.addString(Iterable.scala:933) at scala.collection.IterableOnceOps.mkString(IterableOnce.scala:1191) at scala.collection.IterableOnceOps.mkString$(IterableOnce.scala:1189) at scala.collection.AbstractIterable.mkString(Iterable.scala:933) at scala.reflect.internal.Types$TypeRef.argsString(Types.scala:2636) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at scala.reflect.internal.Types$Type.prefixString(Types.scala:927) at scala.reflect.internal.Types$TypeRef.prefixString(Types.scala:2708) at scala.reflect.internal.Types$TypeRef.preString(Types.scala:2635) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.reflect.internal.Types$TypeVar.safeToString(Types.scala:3770) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.collection.IterableOnceOps.addString(IterableOnce.scala:1246) at scala.collection.IterableOnceOps.addString$(IterableOnce.scala:1241) at scala.collection.AbstractIterable.addString(Iterable.scala:933) at scala.collection.IterableOnceOps.mkString(IterableOnce.scala:1191) at scala.collection.IterableOnceOps.mkString$(IterableOnce.scala:1189) at scala.collection.AbstractIterable.mkString(Iterable.scala:933) at scala.reflect.internal.Types$TypeRef.argsString(Types.scala:2636) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at scala.reflect.internal.Types$Type.prefixString(Types.scala:927) at scala.reflect.internal.Types$TypeRef.prefixString(Types.scala:2708) at scala.reflect.internal.Types$TypeRef.preString(Types.scala:2635) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.reflect.internal.Types$TypeVar.safeToString(Types.scala:3770) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.collection.IterableOnceOps.addString(IterableOnce.scala:1246) at scala.collection.IterableOnceOps.addString$(IterableOnce.scala:1241) at scala.collection.AbstractIterable.addString(Iterable.scala:933) at scala.collection.IterableOnceOps.mkString(IterableOnce.scala:1191) at scala.collection.IterableOnceOps.mkString$(IterableOnce.scala:1189) at scala.collection.AbstractIterable.mkString(Iterable.scala:933) at scala.reflect.internal.Types$TypeRef.argsString(Types.scala:2636) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at scala.reflect.internal.Types$Type.prefixString(Types.scala:927) at scala.reflect.internal.Types$TypeRef.prefixString(Types.scala:2708) at scala.reflect.internal.Types$TypeRef.preString(Types.scala:2635) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.reflect.internal.Types$TypeVar.safeToString(Types.scala:3770) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.collection.IterableOnceOps.addString(IterableOnce.scala:1246) at scala.collection.IterableOnceOps.addString$(IterableOnce.scala:1241) at scala.collection.AbstractIterable.addString(Iterable.scala:933) at scala.collection.IterableOnceOps.mkString(IterableOnce.scala:1191) at scala.collection.IterableOnceOps.mkString$(IterableOnce.scala:1189) at scala.collection.AbstractIterable.mkString(Iterable.scala:933) at scala.reflect.internal.Types$TypeRef.argsString(Types.scala:2636) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at scala.reflect.internal.Types$Type.prefixString(Types.scala:927) at scala.reflect.internal.Types$TypeRef.prefixString(Types.scala:2708) at scala.reflect.internal.Types$TypeRef.preString(Types.scala:2635) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.reflect.internal.Types$TypeVar.safeToString(Types.scala:3770) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.collection.IterableOnceOps.addString(IterableOnce.scala:1246) at scala.collection.IterableOnceOps.addString$(IterableOnce.scala:1241) at scala.collection.AbstractIterable.addString(Iterable.scala:933) at scala.collection.IterableOnceOps.mkString(IterableOnce.scala:1191) at scala.collection.IterableOnceOps.mkString$(IterableOnce.scala:1189) at scala.collection.AbstractIterable.mkString(Iterable.scala:933) at scala.reflect.internal.Types$TypeRef.argsString(Types.scala:2636) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at scala.reflect.internal.Types$Type.prefixString(Types.scala:927) at scala.reflect.internal.Types$TypeRef.prefixString(Types.scala:2708) at scala.reflect.internal.Types$TypeRef.preString(Types.scala:2635) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.reflect.internal.Types$TypeVar.safeToString(Types.scala:3770) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.collection.IterableOnceOps.addString(IterableOnce.scala:1246) at scala.collection.IterableOnceOps.addString$(IterableOnce.scala:1241) at scala.collection.AbstractIterable.addString(Iterable.scala:933) at scala.collection.IterableOnceOps.mkString(IterableOnce.scala:1191) at scala.collection.IterableOnceOps.mkString$(IterableOnce.scala:1189) at scala.collection.AbstractIterable.mkString(Iterable.scala:933) at scala.reflect.internal.Types$TypeRef.argsString(Types.scala:2636) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at scala.reflect.internal.Types$Type.prefixString(Types.scala:927) at scala.reflect.internal.Types$TypeRef.prefixString(Types.scala:2708) at scala.reflect.internal.Types$TypeRef.preString(Types.scala:2635) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.reflect.internal.Types$TypeVar.safeToString(Types.scala:3770) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.collection.IterableOnceOps.addString(IterableOnce.scala:1246) at scala.collection.IterableOnceOps.addString$(IterableOnce.scala:1241) at scala.collection.AbstractIterable.addString(Iterable.scala:933) at scala.collection.IterableOnceOps.mkString(IterableOnce.scala:1191) at scala.collection.IterableOnceOps.mkString$(IterableOnce.scala:1189) at scala.collection.AbstractIterable.mkString(Iterable.scala:933) at scala.reflect.internal.Types$TypeRef.argsString(Types.scala:2636) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at scala.reflect.internal.Types$Type.prefixString(Types.scala:927) at scala.reflect.internal.Types$TypeRef.prefixString(Types.scala:2708) at scala.reflect.internal.Types$TypeRef.preString(Types.scala:2635) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.reflect.internal.Types$TypeVar.safeToString(Types.scala:3770) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.collection.IterableOnceOps.addString(IterableOnce.scala:1246) at scala.collection.IterableOnceOps.addString$(IterableOnce.scala:1241) at scala.collection.AbstractIterable.addString(Iterable.scala:933) at scala.collection.IterableOnceOps.mkString(IterableOnce.scala:1191) at scala.collection.IterableOnceOps.mkString$(IterableOnce.scala:1189) at scala.collection.AbstractIterable.mkString(Iterable.scala:933) at scala.reflect.internal.Types$TypeRef.argsString(Types.scala:2636) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at scala.reflect.internal.Types$Type.prefixString(Types.scala:927) at scala.reflect.internal.Types$TypeRef.prefixString(Types.scala:2708) at scala.reflect.internal.Types$TypeRef.preString(Types.scala:2635) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.reflect.internal.Types$TypeVar.safeToString(Types.scala:3770) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.collection.IterableOnceOps.addString(IterableOnce.scala:1246) at scala.collection.IterableOnceOps.addString$(IterableOnce.scala:1241) at scala.collection.AbstractIterable.addString(Iterable.scala:933) at scala.collection.IterableOnceOps.mkString(IterableOnce.scala:1191) at scala.collection.IterableOnceOps.mkString$(IterableOnce.scala:1189) at scala.collection.AbstractIterable.mkString(Iterable.scala:933) at scala.reflect.internal.Types$TypeRef.argsString(Types.scala:2636) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at scala.reflect.internal.Types$Type.prefixString(Types.scala:927) at scala.reflect.internal.Types$TypeRef.prefixString(Types.scala:2708) at scala.reflect.internal.Types$TypeRef.preString(Types.scala:2635) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.reflect.internal.Types$TypeVar.safeToString(Types.scala:3770) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.collection.IterableOnceOps.addString(IterableOnce.scala:1246) at scala.collection.IterableOnceOps.addString$(IterableOnce.scala:1241) at scala.collection.AbstractIterable.addString(Iterable.scala:933) at scala.collection.IterableOnceOps.mkString(IterableOnce.scala:1191) at scala.collection.IterableOnceOps.mkString$(IterableOnce.scala:1189) at scala.collection.AbstractIterable.mkString(Iterable.scala:933) at scala.reflect.internal.Types$TypeRef.argsString(Types.scala:2636) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at scala.reflect.internal.Types$Type.prefixString(Types.scala:927) at scala.reflect.internal.Types$TypeRef.prefixString(Types.scala:2708) at scala.reflect.internal.Types$TypeRef.preString(Types.scala:2635) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.reflect.internal.Types$TypeVar.safeToString(Types.scala:3770) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.collection.IterableOnceOps.addString(IterableOnce.scala:1246) at scala.collection.IterableOnceOps.addString$(IterableOnce.scala:1241) at scala.collection.AbstractIterable.addString(Iterable.scala:933) at scala.collection.IterableOnceOps.mkString(IterableOnce.scala:1191) at scala.collection.IterableOnceOps.mkString$(IterableOnce.scala:1189) at scala.collection.AbstractIterable.mkString(Iterable.scala:933) at scala.reflect.internal.Types$TypeRef.argsString(Types.scala:2636) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at scala.reflect.internal.Types$Type.prefixString(Types.scala:927) at scala.reflect.internal.Types$TypeRef.prefixString(Types.scala:2708) at scala.reflect.internal.Types$TypeRef.preString(Types.scala:2635) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.reflect.internal.Types$TypeVar.safeToString(Types.scala:3770) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.lang.StringBuilder.append(StringBuilder.java:173) at scala.collection.IterableOnceOps.addString(IterableOnce.scala:1246) at scala.collection.IterableOnceOps.addString$(IterableOnce.scala:1241) at scala.collection.AbstractIterable.addString(Iterable.scala:933) at scala.collection.IterableOnceOps.mkString(IterableOnce.scala:1191) at scala.collection.IterableOnceOps.mkString$(IterableOnce.scala:1189) at scala.collection.AbstractIterable.mkString(Iterable.scala:933) at scala.reflect.internal.Types$TypeRef.argsString(Types.scala:2636) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeToStrings.typeToString(TypeToStrings.scala:55) at scala.reflect.internal.tpe.TypeToStrings.typeToString$(TypeToStrings.scala:34) at scala.reflect.internal.SymbolTable.typeToString(SymbolTable.scala:28) at scala.reflect.internal.Types$Type.toString(Types.scala:938) at scala.reflect.internal.Types$Type.prefixString(Types.scala:927) at scala.reflect.internal.Types$TypeRef.prefixString(Types.scala:2708) at scala.reflect.internal.Types$TypeRef.preString(Types.scala:2635) at scala.reflect.internal.Types$TypeRef.safeToString(Types.scala:2704) at scala.reflect.internal.tpe.TypeConstraints$TypeConstraint.toString(TypeConstraints.scala:198) at java.base/java.lang.String.valueOf(String.java:4225) at java.base/java.io.PrintWriter.print(PrintWriter.java:788) at scala.reflect.internal.Printers$RawTreePrinter.$anonfun$print$3(Printers.scala:1308) at scala.reflect.internal.Printers$RawTreePrinter.$anonfun$print$3$adapted(Printers.scala:1216) at scala.collection.IterableOnceOps.foreach(IterableOnce.scala:576) at scala.collection.IterableOnceOps.foreach$(IterableOnce.scala:574) at scala.collection.AbstractIterable.foreach(Iterable.scala:933) at scala.reflect.internal.Printers$RawTreePrinter.print(Printers.scala:1216) at scala.reflect.internal.Printers$RawTreePrinter.$anonfun$printProduct$default$3$1(Printers.scala:1322) at scala.reflect.internal.Printers$RawTreePrinter.$anonfun$printProduct$default$3$1$adapted(Printers.scala:1322) at scala.reflect.internal.Printers$RawTreePrinter.printIterable(Printers.scala:1340) at scala.reflect.internal.Printers$RawTreePrinter.printProduct(Printers.scala:1326) at scala.reflect.internal.Printers$RawTreePrinter.$anonfun$print$3(Printers.scala:1289) at scala.reflect.internal.Printers$RawTreePrinter.$anonfun$print$3$adapted(Printers.scala:1216) at scala.collection.IterableOnceOps.foreach(IterableOnce.scala:576) at scala.collection.IterableOnceOps.foreach$(IterableOnce.scala:574) at scala.collection.AbstractIterable.foreach(Iterable.scala:933) at scala.reflect.internal.Printers$RawTreePrinter.print(Printers.scala:1216) at scala.reflect.internal.Printers$RawTreePrinter.$anonfun$printIterable$default$3$1(Printers.scala:1333) at scala.reflect.internal.Printers$RawTreePrinter.$anonfun$printIterable$default$3$1$adapted(Printers.scala:1333) at scala.reflect.internal.Printers$RawTreePrinter.printIterable(Printers.scala:1340) at scala.reflect.internal.Printers$RawTreePrinter.$anonfun$print$3(Printers.scala:1304) at scala.reflect.internal.Printers$RawTreePrinter.$anonfun$print$3$adapted(Printers.scala:1216) at scala.collection.IterableOnceOps.foreach(IterableOnce.scala:576) at scala.collection.IterableOnceOps.foreach$(IterableOnce.scala:574) at scala.collection.AbstractIterable.foreach(Iterable.scala:933) at scala.reflect.internal.Printers$RawTreePrinter.print(Printers.scala:1216) at scala.reflect.internal.Printers$RawTreePrinter.$anonfun$printProduct$default$3$1(Printers.scala:1322) at scala.reflect.internal.Printers$RawTreePrinter.$anonfun$printProduct$default$3$1$adapted(Printers.scala:1322) at scala.reflect.internal.Printers$RawTreePrinter.printIterable(Printers.scala:1340) at scala.reflect.internal.Printers$RawTreePrinter.printProduct(Printers.scala:1326) at scala.reflect.internal.Printers$RawTreePrinter.$anonfun$print$3(Printers.scala:1289) at scala.reflect.internal.Printers$RawTreePrinter.$anonfun$print$3$adapted(Printers.scala:1216) at scala.collection.IterableOnceOps.foreach(IterableOnce.scala:576) at scala.collection.IterableOnceOps.foreach$(IterableOnce.scala:574) at scala.collection.AbstractIterable.foreach(Iterable.scala:933) at scala.reflect.internal.Printers$RawTreePrinter.print(Printers.scala:1216) at scala.reflect.api.Printers.render(Printers.scala:199) at scala.reflect.api.Printers.render$(Printers.scala:187) at scala.reflect.api.Universe.render(Universe.scala:73) at scala.reflect.api.Printers.showRaw(Printers.scala:249) at scala.reflect.api.Printers.showRaw$(Printers.scala:248) at scala.reflect.api.Universe.showRaw(Universe.scala:73) at scala.reflect.internal.Types.$anonfun$embeddedSymbol$1(Types.scala:2327) at scala.tools.nsc.Global.log(Global.scala:338) at scala.tools.nsc.Global.debuglog(Global.scala:343) at scala.reflect.internal.Types.scala$reflect$internal$Types$$embeddedSymbol(Types.scala:2327) at scala.reflect.internal.Types$AliasTypeRef.coevolveSym(Types.scala:2308) at scala.reflect.internal.Types$AliasTypeRef.coevolveSym$(Types.scala:2307) at scala.reflect.internal.Types$AliasNoArgsTypeRef.coevolveSym(Types.scala:2728) at scala.reflect.internal.Types$TypeRef.mapOver(Types.scala:2369) at scala.reflect.internal.tpe.TypeMaps$TypeMap.mapOver(TypeMaps.scala:109) at scala.tools.nsc.typechecker.Infer$toOrigin$.apply(Infer.scala:1595) at scala.tools.nsc.typechecker.Infer$Inferencer.instantiateTypeVar(Infer.scala:1211) at scala.tools.nsc.typechecker.Infer$Inferencer.$anonfun$inferTypedPattern$7(Infer.scala:1307) at scala.tools.nsc.typechecker.Infer$Inferencer.$anonfun$inferTypedPattern$7$adapted(Infer.scala:1307) at scala.collection.immutable.List.foreach(List.scala:333) at scala.tools.nsc.typechecker.Infer$Inferencer.inferTypedPattern(Infer.scala:1307) at scala.tools.nsc.typechecker.PatternTypers$PatternTyper.typedInPattern(PatternTypers.scala:194) at scala.tools.nsc.typechecker.PatternTypers$PatternTyper.typedInPattern$(PatternTypers.scala:181) at scala.tools.nsc.typechecker.Typers$Typer.typedInPattern(Typers.scala:203) at scala.tools.nsc.typechecker.Typers$Typer.typedTyped$1(Typers.scala:5763) at scala.tools.nsc.typechecker.Typers$Typer.typedInAnyMode$1(Typers.scala:6027) at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:6041) at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:6080) at scala.tools.nsc.typechecker.Typers$Typer.$anonfun$typedArg$1(Typers.scala:3444) at scala.tools.nsc.typechecker.Typers$Typer.withCondConstrTyper(Typers.scala:492) at scala.tools.nsc.typechecker.Typers$Typer.typedArg(Typers.scala:3444) at scala.tools.nsc.typechecker.PatternTypers$PatternTyper.typedArgWithFormal$1(PatternTypers.scala:136) at scala.tools.nsc.typechecker.PatternTypers$PatternTyper.$anonfun$typedArgsForFormals$4(PatternTypers.scala:150) at scala.reflect.internal.util.Collections.map2(Collections.scala:102) at scala.reflect.internal.util.Collections.map2$(Collections.scala:97) at scala.reflect.internal.SymbolTable.map2(SymbolTable.scala:28) at scala.tools.nsc.typechecker.PatternTypers$PatternTyper.typedArgsForFormals(PatternTypers.scala:150) at scala.tools.nsc.typechecker.PatternTypers$PatternTyper.typedArgsForFormals$(PatternTypers.scala:131) at scala.tools.nsc.typechecker.Typers$Typer.typedArgsForFormals(Typers.scala:203) at scala.tools.nsc.typechecker.Typers$Typer.handleMonomorphicCall$1(Typers.scala:3779) at scala.tools.nsc.typechecker.Typers$Typer.doTypedApply(Typers.scala:3830) at scala.tools.nsc.typechecker.Typers$Typer.normalTypedApply$1(Typers.scala:5127) at scala.tools.nsc.typechecker.Typers$Typer.typedApply$1(Typers.scala:5138) at scala.tools.nsc.typechecker.Typers$Typer.typedInAnyMode$1(Typers.scala:6024) at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:6041) at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:6080) at scala.tools.nsc.typechecker.Typers$Typer.$anonfun$typedPattern$2(Typers.scala:6259) at scala.tools.nsc.typechecker.Contexts$Context.withMode(Contexts.scala:609) at scala.tools.nsc.typechecker.Contexts$Context.withImplicitsDisabledAllowEnrichment(Contexts.scala:615) at scala.tools.nsc.typechecker.Typers$Typer.$anonfun$typedPattern$1(Typers.scala:6259) at scala.tools.nsc.typechecker.TypeDiagnostics.typingInPattern(TypeDiagnostics.scala:71) at scala.tools.nsc.typechecker.TypeDiagnostics.typingInPattern$(TypeDiagnostics.scala:68) at scala.tools.nsc.Global$$anon$6.typingInPattern(Global.scala:511) at scala.tools.nsc.typechecker.Typers$Typer.typedPattern(Typers.scala:6259) at scala.tools.nsc.typechecker.Typers$Typer.typedCase(Typers.scala:2604) at scala.tools.nsc.typechecker.Typers$Typer.$anonfun$typedCases$1(Typers.scala:2638) at scala.collection.immutable.List.loop$3(List.scala:472) at scala.collection.immutable.List.mapConserve(List.scala:497) at scala.tools.nsc.typechecker.Typers$Typer.typedCases(Typers.scala:2637) at scala.tools.nsc.typechecker.Typers$Typer.typedMatch(Typers.scala:2649) at scala.tools.nsc.typechecker.Typers$Typer.typedVirtualizedMatch$1(Typers.scala:4805) at scala.tools.nsc.typechecker.Typers$Typer.typedOutsidePatternMode$1(Typers.scala:6003) at scala.tools.nsc.typechecker.Typers$Typer.typedInAnyMode$1(Typers.scala:6034) at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:6041) at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:6080) at scala.tools.nsc.typechecker.Typers$Typer.transformedOrTyped(Typers.scala:6344) at scala.tools.nsc.typechecker.Typers$Typer.typedDefDef(Typers.scala:2400) at scala.tools.nsc.typechecker.Typers$Typer.typedMemberDef$1(Typers.scala:5986) at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:6040) at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:6080) at scala.tools.nsc.typechecker.Typers$Typer.typedByValueExpr(Typers.scala:6158) at scala.tools.nsc.typechecker.Typers$Typer.typedStat$1(Typers.scala:3279) at scala.tools.nsc.typechecker.Typers$Typer.$anonfun$typedStats$8(Typers.scala:3426) at scala.collection.immutable.List.loop$3(List.scala:472) at scala.collection.immutable.List.mapConserve(List.scala:497) at scala.tools.nsc.typechecker.Typers$Typer.typedStats(Typers.scala:3426) at scala.tools.nsc.typechecker.Typers$Typer.typedTemplate(Typers.scala:2073) at scala.tools.nsc.typechecker.Typers$Typer.typedClassDef(Typers.scala:1911) at scala.tools.nsc.typechecker.Typers$Typer.typedMemberDef$1(Typers.scala:5987) at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:6040) at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:6080) at scala.tools.nsc.typechecker.Typers$Typer.typedByValueExpr(Typers.scala:6158) at scala.tools.nsc.typechecker.Typers$Typer.typedStat$1(Typers.scala:3279) at scala.tools.nsc.typechecker.Typers$Typer.$anonfun$typedStats$8(Typers.scala:3426) at scala.collection.immutable.List.loop$3(List.scala:472) at scala.collection.immutable.List.mapConserve(List.scala:497) at scala.tools.nsc.typechecker.Typers$Typer.typedStats(Typers.scala:3426) at scala.tools.nsc.typechecker.Typers$Typer.typedPackageDef$1(Typers.scala:5670) at scala.tools.nsc.typechecker.Typers$Typer.typedMemberDef$1(Typers.scala:5990) at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:6040) at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:6080) at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:6156) at scala.tools.nsc.typechecker.Analyzer$typerFactory$TyperPhase.apply(Analyzer.scala:127) at scala.tools.nsc.Global$GlobalPhase.applyPhase(Global.scala:480) at scala.tools.nsc.typechecker.Analyzer$typerFactory$TyperPhase.run(Analyzer.scala:110) at scala.tools.nsc.Global$Run.compileUnitsInternal(Global.scala:1543) at scala.tools.nsc.Global$Run.compileUnits(Global.scala:1527) at scala.tools.nsc.Global$Run.compileSources(Global.scala:1519) at scala.tools.nsc.Global$Run.compileFiles(Global.scala:1632) at xsbt.CachedCompiler0.run(CompilerBridge.scala:163) at xsbt.CachedCompiler0.run(CompilerBridge.scala:134) at xsbt.CompilerBridge.run(CompilerBridge.scala:39) at sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:91) at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$7(MixedAnalyzingCompiler.scala:193) at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23) at sbt.internal.inc.MixedAnalyzingCompiler.timed(MixedAnalyzingCompiler.scala:248) at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4(MixedAnalyzingCompiler.scala:183) at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4$adapted(MixedAnalyzingCompiler.scala:163) at sbt.internal.inc.JarUtils$.withPreviousJar(JarUtils.scala:239) at sbt.internal.inc.MixedAnalyzingCompiler.compileScala$1(MixedAnalyzingCompiler.scala:163) at sbt.internal.inc.MixedAnalyzingCompiler.compile(MixedAnalyzingCompiler.scala:211) at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1(IncrementalCompilerImpl.scala:534) at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1$adapted(IncrementalCompilerImpl.scala:534) at sbt.internal.inc.Incremental$.$anonfun$apply$5(Incremental.scala:179) at sbt.internal.inc.Incremental$.$anonfun$apply$5$adapted(Incremental.scala:177) at sbt.internal.inc.Incremental$$anon$2.run(Incremental.scala:463) at sbt.internal.inc.IncrementalCommon$CycleState.next(IncrementalCommon.scala:116) at sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:56) at sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:52) at sbt.internal.inc.IncrementalCommon.cycle(IncrementalCommon.scala:263) at sbt.internal.inc.Incremental$.$anonfun$incrementalCompile$8(Incremental.scala:418) at sbt.internal.inc.Incremental$.withClassfileManager(Incremental.scala:506) at sbt.internal.inc.Incremental$.incrementalCompile(Incremental.scala:405) at sbt.internal.inc.Incremental$.apply(Incremental.scala:171) at sbt.internal.inc.IncrementalCompilerImpl.compileInternal(IncrementalCompilerImpl.scala:534) at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileIncrementally$1(IncrementalCompilerImpl.scala:488) at sbt.internal.inc.IncrementalCompilerImpl.handleCompilationError(IncrementalCompilerImpl.scala:332) at sbt.internal.inc.IncrementalCompilerImpl.compileIncrementally(IncrementalCompilerImpl.scala:425) at sbt.internal.inc.IncrementalCompilerImpl.compile(IncrementalCompilerImpl.scala:137) at sbt.Defaults$.compileIncrementalTaskImpl(Defaults.scala:2363) at sbt.Defaults$.$anonfun$compileIncrementalTask$2(Defaults.scala:2313) at sbt.internal.server.BspCompileTask$.$anonfun$compute$1(BspCompileTask.scala:30) at sbt.internal.io.Retry$.apply(Retry.scala:46) at sbt.internal.io.Retry$.apply(Retry.scala:28) at sbt.internal.io.Retry$.apply(Retry.scala:23) at sbt.internal.server.BspCompileTask$.compute(BspCompileTask.scala:30) at sbt.Defaults$.$anonfun$compileIncrementalTask$1(Defaults.scala:2311) at scala.Function1.$anonfun$compose$1(Function1.scala:49) at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62) at sbt.std.Transform$$anon$4.work(Transform.scala:68) at sbt.Execute.$anonfun$submit$2(Execute.scala:282) at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:23) at sbt.Execute.work(Execute.scala:291) at sbt.Execute.$anonfun$submit$1(Execute.scala:282) at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265) at sbt.CompletionService$$anon$2.call(CompletionService.scala:64) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:577) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) at java.base/java.lang.Thread.run(Thread.java:1589)

Also no idea what this shorter log message means.

no embedded symbol Subject found in TypeRef [info] [log typer] no embedded symbol Subject found in TypeRef(ThisType(net.noresttherein.oldsql.schema.bits), net.noresttherein.oldsql.schema.bits.IndexedMapping, List(TypeVar(TypeRef(NoPrefix, typeNames.WILDCARD, List()), _= bits.this.IndexedMapping[=?bits.this.IndexedMapping[=?bits.this.IndexedMapping[=?bits.this.IndexedMapping[=?bits.this.IndexedMapping[=?bits.this.IndexedMapping[=?bits.this.IndexedMapping[=?bits.this.IndexedMapping[=?bits.this.IndexedMapping[=?bits.this.IndexedMapping[=?bits.this.IndexedMapping[=?bits.this.IndexedMapping[=?bits.this.IndexedMapping[=?bits.this.IndexedMapping[=?bits.this.IndexedMapping[=?bits.this.IndexedMapping[=?bits.this.IndexedMapping[=?...,scala.this.Unit]#Subject,scala.this.Unit]#Subject,scala.this.Unit]#Subject,scala.this.Unit]#Subject,scala.this.Unit]#Subject,scala.this.Unit]#Subject,scala.this.Unit]#Subject,scala.this.Unit]#Subject,scala.this.Unit]#Subject,scala.this.Unit]#Subject,scala.this.Unit]#Subject,scala.this.Unit]#Subject,scala.this.Unit]#Subject,scala.this.Unit]#Subject,scala.this.Unit]#Subject,scala.this.Unit]#Subject,scala.this.Unit]#Subject), TypeRef(ThisType(scala), scala.Unit, List()))) -->

Last few lines of logging

running phase typer on PreprocessorReform.scala [info] [log typer] collect local implicits List(type _, type _, type _, type _, type _, type _) [info] [log typer] collect local implicits List(type skolem LF&0, type skolem LS&0, type skolem LV&0, type skolem LE&0, type skolem RF&0, type skolem RS&0, type skolem RV&0, type skolem RE&0, type skolem U&0, value left, value right, value leftResult, value rightResult, value spelling) [info] [log typer] collect local implicits List()
som-snytt commented 1 year ago

I pushed the other pathologies to the linked ticket, and I'll take another look at what causes the original CME here.

som-snytt commented 1 year ago

Of course, a post-typer task that typechecks can incur arbitrary work. In this case, typedRefinement caused an additional feature check. In sum, not very mysterious.

UNIT WORK RelationSQL.scala has 105 ITEMS
java.lang.Throwable: ADD POST UNIT on Thread[#103,pool-6-thread-5,5,main]
        at scala.tools.nsc.CompilationUnits$CompilationUnit.addPostUnitCheck(CompilationUnits.scala:132)
        at scala.tools.nsc.typechecker.Typers$Typer.checkFeature(Typers.scala:753)
        at scala.tools.nsc.typechecker.Typers$Typer.checkExistentialsFeature(Typers.scala:760)
        at scala.tools.nsc.typechecker.Typers$Typer.typedExistentialTypeTree$1(Typers.scala:5926)