Failed: could not retrieve Scala 2.12.12: missing scala.tools.nsc.Global

[seglo]

https://travis-ci.com/github/akka/akka-grpc-quickstart-java.g8/jobs/448185033#L260

[error] [error] [launcher] could not retrieve Scala 2.12.12: missing scala.tools.nsc.Global
[error] x akka-grpc-java-seed / scripted 
[error]  Cause of test exception: {line 1}  Command failed: Remote sbt initialization failed
[error] java.lang.RuntimeException: Failed tests:
[error] 	akka-grpc-java-seed / scripted
[error] 
[error] 	at scala.sys.package$.error(package.scala:30)
[error] 	at sbt.scriptedtest.ScriptedRunner.reportErrors(ScriptedTests.scala:565)
[error] 	at sbt.scriptedtest.ScriptedRunner.runAll(ScriptedTests.scala:568)
[error] 	at sbt.scriptedtest.ScriptedRunner.run(ScriptedTests.scala:513)
[error] 	at sbt.scriptedtest.ScriptedRunner.run(ScriptedTests.scala:477)
[error] 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[error] 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[error] 	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[error] 	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
[error] 	at sbt.ScriptedPlugin$.$anonfun$scriptedTask$3(ScriptedPlugin.scala:193)
[error] 	at sbt.ScriptedPlugin$.$anonfun$scriptedTask$3$adapted(ScriptedPlugin.scala:178)
[error] 	at scala.Function1.$anonfun$compose$1(Function1.scala:49)
[error] 	at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62)
[error] 	at sbt.std.Transform$$anon$4.work(Transform.scala:67)
[error] 	at sbt.Execute.$anonfun$submit$2(Execute.scala:281)
[error] 	at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:19)
[error] 	at sbt.Execute.work(Execute.scala:290)
[error] 	at sbt.Execute.$anonfun$submit$1(Execute.scala:281)
[error] 	at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:178)
[error] 	at sbt.CompletionService$$anon$2.call(CompletionService.scala:37)
[error] 	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
[error] 	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
[error] 	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
[error] 	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
[error] 	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
[error] 	at java.base/java.lang.Thread.run(Thread.java:834)
[error] (scripted) Failed tests:
[error] 	akka-grpc-java-seed / scripted