sbt:directories> test
[error] stack trace is suppressed; run last scalaInstance for the full output
[error] (scalaInstance) Missing Scala tool configuration from the 'update' report.  Explicitly define scalaInstance or scalaHome or include Scala dependencies in the 'scala-tool' configuration.
[error] elapsed time: 0 s, cache 90%, 18 disk cache hits, 2 onsite tasks
sbt:directories> last scalaInstance
[error] java.lang.RuntimeException: Missing Scala tool configuration from the 'update' report.  Explicitly define scalaInstance or scalaHome or include Scala dependencies in the 'scala-tool' configuration.
[error]         at scala.sys.package$.error(package.scala:27)
[error]         at sbt.internal.Compiler$.$anonfun$5(Compiler.scala:70)
[error]         at scala.Option.getOrElse(Option.scala:201)
[error]         at sbt.internal.Compiler$.scalaInstanceFromUpdate$$anonfun$1(Compiler.scala:96)
[error]         at scala.Function1.$anonfun$compose$1(Function1.scala:79)
[error]         at scala.Function1.$anonfun$compose$1(Function1.scala:79)
[error]         at sbt.std.Transform$$anon$3.work(Transform.scala:79)
[error]         at sbt.std.Transform$$anon$3.work(Transform.scala:79)
[error]         at sbt.Execute.submit$$anonfun$1$$anonfun$1(Execute.scala:284)
[error]         at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:24)
[error]         at sbt.Execute.work(Execute.scala:295)
[error]         at sbt.Execute.submit$$anonfun$1(Execute.scala:284)
[error]         at sbt.ConcurrentRestrictions$$anon$4.$anonfun$2(ConcurrentRestrictions.scala:275)
[error]         at sbt.CompletionService$$anon$2.call(CompletionService.scala:75)
[error]         at sbt.CompletionService$$anon$2.call(CompletionService.scala:73)
[error]         at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:328)
[error]         at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:545)
[error]         at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:328)
[error]         at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1095)
[error]         at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:619)
[error]         at java.base/java.lang.Thread.run(Thread.java:1447)
[error] (scalaInstance) Missing Scala tool configuration from the 'update' report.  Explicitly define scalaInstance or scalaHome or include Scala dependencies in the 'scala-tool' configuration.