Before:
```
[warn] /Users/jz/code/zinc/internal/zinc-apiinfo/src/main/scala/xsbt/api/Visit.scala:187:19: parameter value s in method visitString is never used
[warn] def visitString(s: String): Unit = ()
[warn] ^
^C
[warn] Canceling execution...
[warn] 10 warnings found
[info] Compilation has been cancelled
[error] java.util.concurrent.RejectedExecutionException: Task java.util.concurrent.ExecutorCompletionService$QueueingFuture@33ec70dd rejected from java.util.concurrent.ThreadPoolExecutor@4b832de6[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 1410]
[error] at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2063)
[error] at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:830)
[error] at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1379)
[error] at java.util.concurrent.ExecutorCompletionService.submit(ExecutorCompletionService.java:181)
[error] at sbt.CompletionService$.submit(CompletionService.scala:36)
[error] at sbt.ConcurrentRestrictions$$anon$4.submitValid(ConcurrentRestrictions.scala:176)
[error] at sbt.ConcurrentRestrictions$$anon$4.submit(ConcurrentRestrictions.scala:165)
[error] at sbt.Execute.submit(Execute.scala:262)
[error] at sbt.Execute.ready(Execute.scala:242)
[error] at sbt.Execute.notifyDone(Execute.scala:181)
[error] at sbt.Execute.$anonfun$retire$2(Execute.scala:152)
[error] at sbt.Execute.$anonfun$retire$2$adapted(Execute.scala:151)
[error] at scala.collection.immutable.List.foreach(List.scala:389)
[error] at sbt.Execute.retire(Execute.scala:151)
[error] at sbt.Execute.$anonfun$work$2(Execute.scala:279)
[error] at sbt.Execute$$anon$1.process(Execute.scala:24)
[error] at sbt.Execute.next$1(Execute.scala:104)
[error] at sbt.Execute.processAll(Execute.scala:107)
[error] at sbt.Execute.runKeep(Execute.scala:84)
[error] at sbt.EvaluateTask$.liftedTree1$1(EvaluateTask.scala:387)
[error] at sbt.EvaluateTask$.run$1(EvaluateTask.scala:386)
[error] at sbt.EvaluateTask$.runTask(EvaluateTask.scala:405)
[error] at sbt.internal.Aggregation$.$anonfun$timedRun$4(Aggregation.scala:100)
[error] at sbt.EvaluateTask$.withStreams(EvaluateTask.scala:331)
[error] at sbt.internal.Aggregation$.timedRun(Aggregation.scala:98)
[error] at sbt.internal.Aggregation$.runTasks(Aggregation.scala:111)
[error] at sbt.internal.Aggregation$.$anonfun$applyTasks$1(Aggregation.scala:68)
[error] at sbt.Command$.$anonfun$applyEffect$2(Command.scala:130)
[error] at sbt.internal.Aggregation$.$anonfun$evaluatingParser$11(Aggregation.scala:220)
[error] at sbt.internal.Act$.$anonfun$actParser0$3(Act.scala:387)
[error] at sbt.MainLoop$.processCommand(MainLoop.scala:154)
[error] at sbt.MainLoop$.$anonfun$next$2(MainLoop.scala:137)
[error] at sbt.State$$anon$1.runCmd$1(State.scala:242)
[error] at sbt.State$$anon$1.process(State.scala:248)
[error] at sbt.MainLoop$.$anonfun$next$1(MainLoop.scala:137)
[error] at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:16)
[error] at sbt.MainLoop$.next(MainLoop.scala:137)
[error] at sbt.MainLoop$.run(MainLoop.scala:130)
[error] at sbt.MainLoop$.$anonfun$runWithNewLog$1(MainLoop.scala:108)
[error] at sbt.io.Using.apply(Using.scala:22)
[error] at sbt.MainLoop$.runWithNewLog(MainLoop.scala:102)
[error] at sbt.MainLoop$.runAndClearLast(MainLoop.scala:58)
[error] at sbt.MainLoop$.runLoggedLoop(MainLoop.scala:43)
[error] at sbt.MainLoop$.runLogged(MainLoop.scala:35)
[error] at sbt.StandardMain$.runManaged(Main.scala:113)
[error] at sbt.xMain.run(Main.scala:76)
[error] at xsbt.boot.Launch$$anonfun$run$1.apply(Launch.scala:109)
[error] at xsbt.boot.Launch$.withContextLoader(Launch.scala:128)
[error] at xsbt.boot.Launch$.run(Launch.scala:109)
[error] at xsbt.boot.Launch$$anonfun$apply$1.apply(Launch.scala:35)
[error] at xsbt.boot.Launch$.launch(Launch.scala:117)
[error] at xsbt.boot.Launch$.apply(Launch.scala:18)
[error] at xsbt.boot.Boot$.runImpl(Boot.scala:41)
[error] at xsbt.boot.Boot$.main(Boot.scala:17)
[error] at xsbt.boot.Boot.main(Boot.scala)
[error] java.util.concurrent.RejectedExecutionException: Task java.util.concurrent.ExecutorCompletionService$QueueingFuture@33ec70dd rejected from java.util.concurrent.ThreadPoolExecutor@4b832de6[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 1410]
[error] Use 'last' for the full log.
```
After:
```
sbt:zinc Root> ;zincIvyIntegration/cleanClasses;zincIvyIntegration/compile
[success] Total time: 0 s, completed 03/04/2018 2:24:33 PM
[info] Compiling 5 Scala sources and 1 Java source to /Users/jz/code/zinc/internal/zinc-ivy-integration/target/scala-2.12/classes ...
[warn] /Users/jz/code/zinc/internal/zinc-ivy-integration/src/main/scala/sbt/internal/inc/ResourceLoader.scala:14:42: parameter value classLoader in method getPropertiesFor is never used
[warn] def getPropertiesFor(resource: String, classLoader: ClassLoader): Properties = {
[warn] ^
[warn] /Users/jz/code/zinc/internal/zinc-ivy-integration/src/main/scala/sbt/internal/inc/ZincComponentCompiler.scala:13:17: Unused import
[warn] import java.net.URLClassLoader
[warn] ^
[warn] /Users/jz/code/zinc/internal/zinc-ivy-integration/src/main/scala/sbt/internal/inc/ZincComponentCompiler.scala:137:26: Unused import
[warn] import sbt.io.Path.toURLs
[warn] ^
[warn] /Users/jz/code/zinc/internal/zinc-ivy-integration/src/main/scala/sbt/internal/inc/ZincComponentCompiler.scala:94:30: The outer reference in this type test cannot be checked at run time.
[warn] private final case class ScalaArtifacts(compiler: File, library: File, others: Vector[File])
[warn] ^
^C
[warn] Canceling execution...
[warn] four warnings found
[info] Compilation has been cancelled
[error] Total time: 1 s, completed 03/04/2018 2:24:35 PM
```
Best served with https://github.com/scala/scala/pull/6479Fixes#3958
This version of Jline fixes three things for Emacs users:
- ANSI colors are now enabled for Emacs.
- Terminal echo is now disabled for Emacs.
- History is enabled for all dump terminals.
Fixes#3849
This brings back the 0.13 logic:
```scala
def setGlobalLogLevel(s: State, level: Level.Value): State = {
s.globalLogging.full match {
case a: AbstractLogger => a.setLevel(level)
case _ => ()
}
s.put(BasicKeys.explicitGlobalLogLevels, true).put(Keys.logLevel.key, level)
}
```
previously I was using separate thread in a forked test to test the server, but that is not enough isolation to run multiple server tests.
This adds `RunFromSourceMain.fork(workingDirectory: File)`, which allows us to run a fresh sbt on the given working directory. Next, I've refactored the stateful client-side buffer to a class `TestServer`.