Scala 3 SuspendException

This repository reproduces an issue with Scala 3 where the compiler reports a SuspendException on a clean compile.

There are 4 files involved:

1. Visitor.scala -- defines BaseVisitor and VisitorType traits
2. VisitorMacros.scala -- defines a macro that produces an instance of VisitorType
   1. The Out type of the generated VisitorType is a refined Selectable type with value members for all of the type members of the given type T
3. Test.scala:
   1. Defines sealed trait Test with one member, case object Foo
   2. Defines a val visitorType: VisitorType[Test] via a macro invocation
   3. Defines trait Visitor[A] which refers to visitorType.Out
4. UsesTest.scala -- simply refers to Test.Foo. This file causes the error

To reproduce:

1. Clone this repo
2. cd into it
3. Run sbt 'clean; compile'

You'll see output like this:

[info] compiling 4 Scala sources to /Users/matt/scala3-suspend-exception/target/scala-3.5.2/classes ..
dotty.tools.dotc.CompilationUnit$SuspendException
[error] Error while emitting /Users/matt/scala3-suspend-exception/src/main/scala/example/UsesTest.scala
[error] null
[error] one error found
[error] (Compile / compileIncremental) Compilation failed
[error] Total time: 3 s, completed Nov 19, 2024, 11:37:35 AM

Using a patched version of the compiler that removes NoStackTrace from SuspendException, we can see the full stack trace:

dotty.tools.dotc.CompilationUnit$SuspendException
  at dotty.tools.dotc.CompilationUnit.suspend(CompilationUnit.scala:110)
  at dotty.tools.dotc.typer.Namer$SuspendCompleter.complete(Namer.scala:1746)
  at dotty.tools.dotc.typer.Namer$Completer.complete(Namer.scala:865)
  at dotty.tools.dotc.core.SymDenotations$SymDenotation.completeFrom(SymDenotations.scala:175)
  at dotty.tools.dotc.core.Denotations$Denotation.completeInfo$1(Denotations.scala:190)
  at dotty.tools.dotc.core.Denotations$Denotation.info(Denotations.scala:192)
  at dotty.tools.dotc.core.SymDenotations$SymDenotation.ensureCompleted(SymDenotations.scala:393)
  at dotty.tools.dotc.core.SymDenotations$SymDenotation.flags(SymDenotations.scala:66)
  at dotty.tools.dotc.core.SymDenotations$SymDenotation.isOneOf(SymDenotations.scala:116)
  at dotty.tools.dotc.core.SymDenotations$SymDenotation.isEffectivelyErased(SymDenotations.scala:1033)
  at dotty.tools.dotc.transform.PruneErasedDefs.transformSym(PruneErasedDefs.scala:39)
  at dotty.tools.dotc.core.DenotTransformers$SymTransformer.transform(DenotTransformers.scala:72)
  at dotty.tools.dotc.core.DenotTransformers$SymTransformer.transform$(DenotTransformers.scala:67)
  at dotty.tools.dotc.transform.PruneErasedDefs.transform(PruneErasedDefs.scala:26)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:838)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Symbols$Symbol.recomputeDenot(Symbols.scala:124)
  at dotty.tools.dotc.core.Symbols$Symbol.computeDenot(Symbols.scala:118)
  at dotty.tools.dotc.core.Symbols$Symbol.denot(Symbols.scala:109)
  at dotty.tools.dotc.core.Symbols$Symbol.name(Symbols.scala:277)
  at dotty.tools.dotc.core.Scopes$MutableScope.unlink(Scopes.scala:348)
  at dotty.tools.dotc.core.Scopes$Scope.drop$1(Scopes.scala:174)
  at dotty.tools.dotc.core.Scopes$Scope.filteredScope$$anonfun$1(Scopes.scala:181)
  at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
  at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
  at scala.collection.IterableOnceOps.foreach(IterableOnce.scala:619)
  at scala.collection.IterableOnceOps.foreach$(IterableOnce.scala:617)
  at scala.collection.AbstractIterator.foreach(Iterator.scala:1303)
  at dotty.tools.dotc.core.Scopes$Scope.filteredScope(Scopes.scala:171)
  at dotty.tools.dotc.core.TypeErasure.dotty$tools$dotc$core$TypeErasure$$apply(TypeErasure.scala:739)
  at dotty.tools.dotc.core.TypeErasure.eraseInfo(TypeErasure.scala:825)
  at dotty.tools.dotc.core.TypeErasure$.transformInfo(TypeErasure.scala:277)
  at dotty.tools.dotc.transform.Erasure.transform(Erasure.scala:99)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:838)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:855)
  at dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:884)
  at dotty.tools.dotc.core.Symbols$Symbol.recomputeDenot(Symbols.scala:124)
  at dotty.tools.dotc.core.Symbols$Symbol.computeDenot(Symbols.scala:118)
  at dotty.tools.dotc.core.Symbols$Symbol.denot(Symbols.scala:109)
  at dotty.tools.dotc.core.Symbols$.toDenot(Symbols.scala:544)
  at dotty.tools.backend.jvm.BTypesFromSymbols.definedClasses$$anonfun$1(BTypesFromSymbols.scala:197)
  at dotty.tools.dotc.core.Scopes$Scope.filter(Scopes.scala:103)
  at dotty.tools.backend.jvm.BTypesFromSymbols.definedClasses(BTypesFromSymbols.scala:197)
  at dotty.tools.backend.jvm.BTypesFromSymbols.getMemberClasses(BTypesFromSymbols.scala:192)
  at dotty.tools.backend.jvm.BTypesFromSymbols.setClassInfo(BTypesFromSymbols.scala:152)
  at dotty.tools.backend.jvm.BTypesFromSymbols.classBTypeFromSymbol$$anonfun$1(BTypesFromSymbols.scala:65)
  at scala.collection.mutable.HashMap.getOrElse(HashMap.scala:451)
  at dotty.tools.backend.jvm.BTypesFromSymbols.classBTypeFromSymbol(BTypesFromSymbols.scala:66)
  at dotty.tools.backend.jvm.BTypesFromSymbols.$anonfun$4(BTypesFromSymbols.scala:124)
  at scala.collection.immutable.List.map(List.scala:247)
  at dotty.tools.backend.jvm.BTypesFromSymbols.setClassInfo(BTypesFromSymbols.scala:124)
  at dotty.tools.backend.jvm.BTypesFromSymbols.classBTypeFromSymbol$$anonfun$1(BTypesFromSymbols.scala:65)
  at scala.collection.mutable.HashMap.getOrElse(HashMap.scala:451)
  at dotty.tools.backend.jvm.BTypesFromSymbols.classBTypeFromSymbol(BTypesFromSymbols.scala:66)
  at dotty.tools.backend.jvm.BCodeHelpers$BCInnerClassGen.getClassBType(BCodeHelpers.scala:178)
  at dotty.tools.backend.jvm.BCodeHelpers$BCInnerClassGen.getClassBType$(BCodeHelpers.scala:130)
  at dotty.tools.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.getClassBType(BCodeSkelBuilder.scala:134)
  at dotty.tools.backend.jvm.BCodeHelpers.primitiveOrClassToBType$1$$anonfun$1(BCodeHelpers.scala:718)
  at scala.collection.immutable.HashMap.getOrElse(HashMap.scala:722)
  at dotty.tools.backend.jvm.BCodeHelpers.primitiveOrClassToBType$1(BCodeHelpers.scala:718)
  at dotty.tools.backend.jvm.BCodeHelpers.dotty$tools$backend$jvm$BCodeHelpers$$typeToTypeKind(BCodeHelpers.scala:737)
  at dotty.tools.backend.jvm.BCodeHelpers$BCInnerClassGen.toTypeKind(BCodeHelpers.scala:202)
  at dotty.tools.backend.jvm.BCodeHelpers$BCInnerClassGen.toTypeKind$(BCodeHelpers.scala:130)
  at dotty.tools.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.toTypeKind(BCodeSkelBuilder.scala:134)
  at dotty.tools.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.symInfoTK(BCodeSkelBuilder.scala:163)
  at dotty.tools.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder$locals$.makeLocal(BCodeSkelBuilder.scala:542)
  at dotty.tools.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder$locals$.getOrMakeLocal$$anonfun$1(BCodeSkelBuilder.scala:547)
  at scala.collection.mutable.AnyRefMap.getOrElse(AnyRefMap.scala:157)
  at dotty.tools.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder$locals$.getOrMakeLocal(BCodeSkelBuilder.scala:547)
  at dotty.tools.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genLoadTo(BCodeBodyBuilder.scala:317)
  at dotty.tools.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genLoad(BCodeBodyBuilder.scala:303)
  at dotty.tools.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genStat(BCodeBodyBuilder.scala:117)
  at dotty.tools.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genBlockTo$$anonfun$1(BCodeBodyBuilder.scala:1093)
  at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
  at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
  at scala.collection.immutable.List.foreach(List.scala:334)
  at dotty.tools.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genBlockTo(BCodeBodyBuilder.scala:1093)
  at dotty.tools.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genLoadTo(BCodeBodyBuilder.scala:457)
  at dotty.tools.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genLoad(BCodeBodyBuilder.scala:303)
  at dotty.tools.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genLabeledTo(BCodeBodyBuilder.scala:606)
  at dotty.tools.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genLoadTo(BCodeBodyBuilder.scala:333)
  at dotty.tools.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genLoad(BCodeBodyBuilder.scala:303)
  at dotty.tools.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genStat(BCodeBodyBuilder.scala:117)
  at dotty.tools.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genBlockTo$$anonfun$1(BCodeBodyBuilder.scala:1093)
  at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
  at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
  at scala.collection.immutable.List.foreach(List.scala:334)
  at dotty.tools.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genBlockTo(BCodeBodyBuilder.scala:1093)
  at dotty.tools.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genLoadTo(BCodeBodyBuilder.scala:457)
  at dotty.tools.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.emitNormalMethodBody$1(BCodeSkelBuilder.scala:899)
  at dotty.tools.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.genDefDef(BCodeSkelBuilder.scala:922)
  at dotty.tools.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.gen(BCodeSkelBuilder.scala:699)
  at dotty.tools.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.gen$$anonfun$1(BCodeSkelBuilder.scala:705)
  at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
  at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
  at scala.collection.immutable.List.foreach(List.scala:334)
  at dotty.tools.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.gen(BCodeSkelBuilder.scala:705)
  at dotty.tools.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.genPlainClass(BCodeSkelBuilder.scala:293)
  at dotty.tools.backend.jvm.CodeGen.genClass(CodeGen.scala:160)
  at dotty.tools.backend.jvm.CodeGen.genClassDef$1(CodeGen.scala:62)
  at dotty.tools.backend.jvm.CodeGen.genClassDefs$1(CodeGen.scala:117)
  at dotty.tools.backend.jvm.CodeGen.genClassDefs$1$$anonfun$1(CodeGen.scala:115)
  at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
  at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
  at scala.collection.immutable.List.foreach(List.scala:334)
  at dotty.tools.backend.jvm.CodeGen.genClassDefs$1(CodeGen.scala:115)
  at dotty.tools.backend.jvm.CodeGen.genUnit(CodeGen.scala:120)
  at dotty.tools.backend.jvm.GenBCode.run(GenBCode.scala:90)
  at dotty.tools.dotc.core.Phases$Phase.runOn$$anonfun$1(Phases.scala:380)
  at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
  at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
  at scala.collection.immutable.List.foreach(List.scala:334)
  at dotty.tools.dotc.core.Phases$Phase.runOn(Phases.scala:373)
  at dotty.tools.backend.jvm.GenBCode.runOn(GenBCode.scala:98)
  at dotty.tools.dotc.Run.runPhases$1$$anonfun$1(Run.scala:343)
  at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
  at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
  at scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1323)
  at dotty.tools.dotc.Run.runPhases$1(Run.scala:336)
  at dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:383)
  at dotty.tools.dotc.Run.compileUnits$$anonfun$adapted$1(Run.scala:395)
  at dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:69)
  at dotty.tools.dotc.Run.compileUnits(Run.scala:395)
  at dotty.tools.dotc.Run.compileSources(Run.scala:282)
  at dotty.tools.dotc.Run.compile(Run.scala:267)
  at dotty.tools.dotc.Driver.doCompile(Driver.scala:37)
  at dotty.tools.xsbt.CompilerBridgeDriver.run(CompilerBridgeDriver.java:141)
  at dotty.tools.xsbt.CompilerBridge.run(CompilerBridge.java:22)
  at sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:91)
  at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$7(MixedAnalyzingCompiler.scala:196)
  at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
  at sbt.internal.inc.MixedAnalyzingCompiler.timed(MixedAnalyzingCompiler.scala:251)
  at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4(MixedAnalyzingCompiler.scala:186)
  at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4$adapted(MixedAnalyzingCompiler.scala:166)
  at sbt.internal.inc.JarUtils$.withPreviousJar(JarUtils.scala:241)
  at sbt.internal.inc.MixedAnalyzingCompiler.compileScala$1(MixedAnalyzingCompiler.scala:166)
  at sbt.internal.inc.MixedAnalyzingCompiler.compile(MixedAnalyzingCompiler.scala:214)
  at sbt.internal.inc.IncrementalCompilerImpl.$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$3(Incremental.scala:178)
  at sbt.internal.inc.Incremental$.$anonfun$apply$3$adapted(Incremental.scala:176)
  at sbt.internal.inc.Incremental$$anon$2.run(Incremental.scala:454)
  at sbt.internal.inc.IncrementalCommon$CycleState.next(IncrementalCommon.scala:117)
  at sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:56)
  at sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:52)
  at sbt.internal.inc.IncrementalCommon.cycle(IncrementalCommon.scala:265)
  at sbt.internal.inc.Incremental$.$anonfun$incrementalCompile$8(Incremental.scala:409)
  at sbt.internal.inc.Incremental$.withClassfileManager(Incremental.scala:496)
  at sbt.internal.inc.Incremental$.incrementalCompile(Incremental.scala:396)
  at sbt.internal.inc.Incremental$.apply(Incremental.scala:170)
  at sbt.internal.inc.IncrementalCompilerImpl.compileInternal(IncrementalCompilerImpl.scala:534)
  at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileIncrementally$1(IncrementalCompilerImpl.scala:488)
  at sbt.internal.inc.IncrementalCompilerImpl.handleCompilationError(IncrementalCompilerImpl.scala:332)
  at sbt.internal.inc.IncrementalCompilerImpl.compileIncrementally(IncrementalCompilerImpl.scala:425)
  at sbt.internal.inc.IncrementalCompilerImpl.compile(IncrementalCompilerImpl.scala:137)
  at sbt.Defaults$.compileIncrementalTaskImpl(Defaults.scala:2427)
  at sbt.Defaults$.$anonfun$compileIncrementalTask$2(Defaults.scala:2377)
  at sbt.internal.server.BspCompileTask$.$anonfun$compute$1(BspCompileTask.scala:41)
  at sbt.internal.io.Retry$.apply(Retry.scala:47)
  at sbt.internal.io.Retry$.apply(Retry.scala:29)
  at sbt.internal.io.Retry$.apply(Retry.scala:24)
  at sbt.internal.server.BspCompileTask$.compute(BspCompileTask.scala:41)
  at sbt.Defaults$.$anonfun$compileIncrementalTask$1(Defaults.scala:2375)
  at scala.Function1.$anonfun$compose$1(Function1.scala:49)
  at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:63)
  at sbt.std.Transform$$anon$4.work(Transform.scala:69)
  at sbt.Execute.$anonfun$submit$2(Execute.scala:283)
  at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:24)
  at sbt.Execute.work(Execute.scala:292)
  at sbt.Execute.$anonfun$submit$1(Execute.scala:283)
  at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265)
  at sbt.CompletionService$$anon$2.call(CompletionService.scala:65)
  at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
  at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572)
  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:1583)