Homebrew test block fails for 1.0.101

==> /usr/local/Cellar/kobalt/1.0.101/bin/kobaltw assemble
Picked up _JAVA_OPTIONS:  -Duser.home=/Users/joe/Library/Caches/Homebrew/java_cache
Downloading https://github.com/cbeust/kobalt/releases/download/1.0.101/kobalt-1.0.101.zip
[Wrapper] Downloaded https://github.com/cbeust/kobalt/releases/download/1.0.101/kobalt-1.0.101.zip
Picked up _JAVA_OPTIONS:  -Duser.home=/Users/joe/Library/Caches/Homebrew/java_cache
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.google.inject.internal.cglib.core.$ReflectUtils$1 (file:/Users/joe/Library/Caches/Homebrew/java_cache/.kobalt/wrapper/dist/kobalt-1.0.101/kobalt/wrapper/kobalt-1.0.101.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
WARNING: Please consider reporting this to the maintainers of com.google.inject.internal.cglib.core.$ReflectUtils$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
            _  __          _               _   _   
           | |/ /   ___   | |__     __ _  | | | |_ 
           | ' /   / _ \  | '_ \   / _` | | | | __|
           | . \  | (_) | | |_) | | (_| | | | | |_ 
           |_|\_\  \___/  |_.__/   \__,_| |_|  \__|  1.0.101

Downloaded artifact org.jetbrains.kotlin:kotlin-compiler-embeddable:pom:1.2.20 from Maven (http://repo1.maven.org/maven2/, default, releases+snapshots)
Downloaded artifact org.jetbrains.kotlin:kotlin-stdlib:pom:1.2.20 from Maven (http://repo1.maven.org/maven2/, default, releases+snapshots)
Downloaded artifact org.jetbrains:annotations:pom:13.0 from Maven (http://repo1.maven.org/maven2/, default, releases+snapshots)
Downloaded artifact org.jetbrains.kotlin:kotlin-script-runtime:pom:1.2.20 from Maven (http://repo1.maven.org/maven2/, default, releases+snapshots)
Downloaded artifact org.jetbrains.kotlin:kotlin-reflect:pom:1.2.20 from Maven (http://repo1.maven.org/maven2/, default, releases+snapshots)
Downloaded artifact org.jetbrains.kotlin:kotlin-compiler-embeddable:jar:1.2.20 from Maven (http://repo1.maven.org/maven2/, default, releases+snapshots)
Downloaded artifact org.jetbrains.kotlin:kotlin-stdlib:jar:1.2.20 from Maven (http://repo1.maven.org/maven2/, default, releases+snapshots)
Downloaded artifact org.jetbrains:annotations:jar:13.0 from Maven (http://repo1.maven.org/maven2/, default, releases+snapshots)
Downloaded artifact org.jetbrains.kotlin:kotlin-script-runtime:jar:1.2.20 from Maven (http://repo1.maven.org/maven2/, default, releases+snapshots)
Downloaded artifact org.jetbrains.kotlin:kotlin-reflect:jar:1.2.20 from Maven (http://repo1.maven.org/maven2/, default, releases+snapshots)
Downloaded artifact org.jetbrains.kotlin:kotlin-runtime:pom:1.2.20 from Maven (http://repo1.maven.org/maven2/, default, releases+snapshots)
Downloaded artifact org.jetbrains.kotlin:kotlin-runtime:jar:1.2.20 from Maven (http://repo1.maven.org/maven2/, default, releases+snapshots)
  Regular compilation time: 1670 ms
Parallel build starting
     ?????????????????
     ? Building test ?
     ?????????????????
????? test:compile
  Kotlin 1.2.20 compiling 1 file
  Kotlin incremental compilation is enabled
*****
***** ERROR Couldn't compile file: Source file or directory not found: /var/folders/w6/9r0nb9011glb8fdz__srd78c0000gq/T/./src/main/kotlin/com/A.kt
*****
*****
***** ERROR Couldn't compile file: Source file or directory not found: /var/folders/w6/9r0nb9011glb8fdz__srd78c0000gq/T/./src/main/kotlin/com/A.kt
*****
*****
***** ERROR Error: com.beust.kobalt.KobaltException: Couldn't compile file: Source file or directory not found: /var/folders/w6/9r0nb9011glb8fdz__srd78c0000gq/T/./src/main/kotlin/com/A.kt
*****

Thread report
??????????????????????????????????????????
?  Time (sec) ? Thread 21                ?
??????????????????????????????????????????
?  0          ? test                     ?
??????????????????????????????????????????
PARALLEL BUILD SUCCESSFUL (0 SECONDS), sequential build would have taken 0 seconds
/usr/local/Homebrew/Library/Homebrew/test.rb (Formulary::FormulaLoader): loading /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/python.rb
/usr/local/Homebrew/Library/Homebrew/debrew.rb:11:in `raise'
BuildError: Failed executing: /usr/local/Cellar/kobalt/1.0.101/bin/kobaltw assemble
1. raise
2. ignore
3. backtrace
4. irb
5. shell
Choose an action:

which runs

  test do
    (testpath/"src/main/kotlin/com/A.kt").write <<~EOS
      package com
      class A
      EOS

    (testpath/"kobalt/src/Build.kt").write <<~EOS
      import com.beust.kobalt.*
      import com.beust.kobalt.api.*
      import com.beust.kobalt.plugin.packaging.*

      val p = project {
        name = "test"
        version = "1.0"
        assemble {
          jar {}
        }
      }
    EOS

    system "#{bin}/kobaltw", "assemble"
    output = "kobaltBuild/libs/test-1.0.jar"
    assert_predicate testpath/output, :exist?, "Couldn't find #{output}"
  end

cbeust / kobalt

Homebrew test block fails for 1.0.101 #471