kind-projector
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Assertions with -Ycheck:all
[check: kind-projector] 1 new symbols.
[check: kind-projector] package scala
Caught java.lang.AssertionError: assertion failed: <none>
semigroup.scala
java.lang.AssertionError: assertion failed: <none>
at scala.reflect.internal.SymbolTable.throwAssertionError(SymbolTable.scala:163)
at scala.tools.nsc.typechecker.Typers$Typer.typedPackageDef$1(Typers.scala:5260)
at scala.tools.nsc.typechecker.Typers$Typer.typedMemberDef$1(Typers.scala:5555)
at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:5602)
at scala.tools.nsc.typechecker.Typers$Typer.runTyper$1(Typers.scala:5640)
at scala.tools.nsc.typechecker.Typers$Typer.typedInternal(Typers.scala:5672)
at scala.tools.nsc.typechecker.Typers$Typer.body$2(Typers.scala:5613)
at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5618)
at scala.tools.nsc.typechecker.TreeCheckers$TreeChecker.typed(TreeCheckers.scala:256)
at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5699)
at scala.tools.nsc.typechecker.TreeCheckers.$anonfun$check$1(TreeCheckers.scala:213)
at scala.tools.nsc.typechecker.TreeCheckers.runWithUnit(TreeCheckers.scala:200)
at scala.tools.nsc.typechecker.TreeCheckers.check(TreeCheckers.scala:211)
at scala.tools.nsc.typechecker.TreeCheckers.$anonfun$checkTrees$3(TreeCheckers.scala:194)
at scala.tools.nsc.typechecker.TreeCheckers.$anonfun$checkTrees$1(TreeCheckers.scala:181)
at scala.tools.nsc.typechecker.TreeCheckers.$anonfun$checkTrees$1$adapted(TreeCheckers.scala:194)
at scala.collection.Iterator.foreach(Iterator.scala:944)
at scala.collection.Iterator.foreach$(Iterator.scala:944)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1432)
at scala.tools.nsc.typechecker.TreeCheckers.checkTrees(TreeCheckers.scala:194)
at scala.tools.nsc.Global$Run.runCheckers(Global.scala:1366)
at scala.tools.nsc.Global$Run.compileUnitsInternal(Global.scala:1477)
at scala.tools.nsc.Global$Run.compileUnits(Global.scala:1430)
at scala.tools.nsc.Global$Run.compileSources(Global.scala:1423)
at scala.tools.nsc.Global$Run.compile(Global.scala:1539)
at xsbt.CachedCompiler0.run(CompilerInterface.scala:130)
at xsbt.CachedCompiler0.run(CompilerInterface.scala:105)
at xsbt.CompilerInterface.run(CompilerInterface.scala:31)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sbt.internal.inc.AnalyzingCompiler.call(AnalyzingCompiler.scala:237)
at sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:111)
at sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:90)
at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$3(MixedAnalyzingCompiler.scala:83)
at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:12)
at sbt.internal.inc.MixedAnalyzingCompiler.timed(MixedAnalyzingCompiler.scala:134)
at sbt.internal.inc.MixedAnalyzingCompiler.compileScala$1(MixedAnalyzingCompiler.scala:74)
at sbt.internal.inc.MixedAnalyzingCompiler.compile(MixedAnalyzingCompiler.scala:117)
at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1(IncrementalCompilerImpl.scala:305)
at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1$adapted(IncrementalCompilerImpl.scala:305)
at sbt.internal.inc.Incremental$.doCompile(Incremental.scala:101)
at sbt.internal.inc.Incremental$.$anonfun$compile$4(Incremental.scala:82)
at sbt.internal.inc.IncrementalCommon.recompileClasses(IncrementalCommon.scala:110)
at sbt.internal.inc.IncrementalCommon.cycle(IncrementalCommon.scala:57)
at sbt.internal.inc.Incremental$.$anonfun$compile$3(Incremental.scala:84)
at sbt.internal.inc.Incremental$.manageClassfiles(Incremental.scala:129)
at sbt.internal.inc.Incremental$.compile(Incremental.scala:75)
at sbt.internal.inc.IncrementalCompile$.apply(Compile.scala:61)
at sbt.internal.inc.IncrementalCompilerImpl.compileInternal(IncrementalCompilerImpl.scala:309)
at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileIncrementally$1(IncrementalCompilerImpl.scala:267)
at sbt.internal.inc.IncrementalCompilerImpl.handleCompilationError(IncrementalCompilerImpl.scala:158)
at sbt.internal.inc.IncrementalCompilerImpl.compileIncrementally(IncrementalCompilerImpl.scala:237)
at sbt.internal.inc.IncrementalCompilerImpl.compile(IncrementalCompilerImpl.scala:68)
at sbt.Defaults$.compileIncrementalTaskImpl(Defaults.scala:1443)
at sbt.Defaults$.$anonfun$compileIncrementalTask$1(Defaults.scala:1417)
at scala.Function1.$anonfun$compose$1(Function1.scala:44)
at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:39)
at sbt.std.Transform$$anon$4.work(System.scala:66)
at sbt.Execute.$anonfun$submit$2(Execute.scala:263)
at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:16)
at sbt.Execute.work(Execute.scala:272)
at sbt.Execute.$anonfun$submit$1(Execute.scala:263)
at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:174)
at sbt.CompletionService$$anon$2.call(CompletionService.scala:37)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
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)
does this occur with literally any usage of the plugin in combination with -Ycheck:all, or is there something particular in the source that triggers it?
Sorry I didn't leave more detailed comments back then 😅. If I were to guess, it was literally any usage (F[?] or Lambda[x => ...]) of the plugin in combination with -Ycheck:all. I will try to reproduce it with the most recent compiler / plugin pair.