Boxed error when ./seed bloop

[PhilAndrew]

Boxed error when ./seed bloop

Exception in thread "main" java.util.concurrent.ExecutionException: Boxed Error
    at scala.concurrent.impl.Promise$.resolver(Promise.scala:87)
    at scala.concurrent.impl.Promise$.scala$concurrent$impl$Promise$$resolveTry(Promise.scala:79)
    at scala.concurrent.impl.Promise$DefaultPromise.tryComplete(Promise.scala:284)
    at scala.concurrent.Promise.complete(Promise.scala:53)
    at scala.concurrent.Promise.complete$(Promise.scala:52)
    at scala.concurrent.impl.Promise$DefaultPromise.complete(Promise.scala:187)
    at scala.concurrent.impl.Promise.$anonfun$transform$1(Promise.scala:33)
    at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:64)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.AssertionError: assertion failed: Attempts to download https://repo1.maven.org/maven2/com/fasterxml/jackson/core/jackson-databind/2.6.7.3/jackson-databind-2.6.7.3-sources.jar twice in parallel
    at scala.Predef$.assert(Predef.scala:223)
    at coursier.cache.loggers.RefreshLogger$UpdateDisplayRunnable.newEntry(RefreshLogger.scala:82)
    at coursier.cache.loggers.RefreshLogger.downloadingArtifact(RefreshLogger.scala:227)
    at coursier.cache.FileCache.$anonfun$download$25(FileCache.scala:422)
    at scala.concurrent.Future$.$anonfun$apply$1(Future.scala:659)
    at scala.util.Success.$anonfun$map$1(Try.scala:255)
    at scala.util.Success.map(Try.scala:213)
    at scala.concurrent.Future.$anonfun$map$1(Future.scala:292)
    at scala.concurrent.impl.Promise.liftedTree1$1(Promise.scala:33)
    ... 5 more

[tindzk]

Can you reproduce it reliably? I have largely rewritten this part of the code in #77, so the bug might be fixed once the pull request has been merged.

[PhilAndrew]

No.