Java build keeps spinning after error

[matt2e]

Steps to repro

• Edit a java file with random words so that it will not compile
• Run ftl dev <path to modules>
• Build will fail and status in CLI will show as a red X
• Edit the java file again, but keeping it as invalid code
• FTL starts rebuilding the module and fails, but the spinner keeps spinning when it should be a red cross
  • Error log does not contain useful info, instead the error is printed as an info log
  • Maybe the build engine was not notified of the build error?
  • Removing the invalid code does make the build work and for the status to show it as a tick again

Logs:

error:subscriber: Dev mode process exited with error: exit status 1
info:subscriber: Found file changes: *src/main/java/xyz/block/ftl/java/test/subscriber/Subscriber.java
info:subscriber:build: Building module
info:subscriber: Using dev mode build command 'mvn -Dquarkus.console.enabled=false -q clean quarkus:dev -Ddebug=61849'
info: (line 21,col 25) Parse error. Found "this", expected one of  ";" "<" "@" "abstract" "boolean" "byte" "char" "class" "default" "double" "enum" "exports" "final" "float" "int" "interface" "long" "module" "native" "non-sealed" "open" "opens" "permits" "private" "protected" "provides" "public" "record" "requires" "sealed" "short" "static" "strictfp" "synchronized" "to" "transient" "transitive" "uses" "void" "volatile" "when" "with" "yield" "{" "}" <IDENTIFIER>
info: Problem stacktrace : 
info:   com.github.javaparser.GeneratedJavaParser.generateParseException(GeneratedJavaParser.java:14457)
info:   com.github.javaparser.GeneratedJavaParser.jj_consume_token(GeneratedJavaParser.java:14302)
info:   com.github.javaparser.GeneratedJavaParser.ClassOrInterfaceBody(GeneratedJavaParser.java:1300)
info:   com.github.javaparser.GeneratedJavaParser.ClassOrInterfaceDeclaration(GeneratedJavaParser.java:538)
info:   com.github.javaparser.GeneratedJavaParser.CompilationUnit(GeneratedJavaParser.java:156)
info:   com.github.javaparser.JavaParser.parse(JavaParser.java:125)
info:   com.github.javaparser.JavaParser.parse(JavaParser.java:308)
info:   net.revelc.code.impsort.ImpSort.parseFile(ImpSort.java:130)
info:   net.revelc.code.impsort.maven.plugin.AbstractImpSortMojo.lambda$execute$3(AbstractImpSortMojo.java:309)
info:   java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
info:   java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
info:   java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
info:   java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
info:   java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:1024)
info:   java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
info:   java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
info:   java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
info:   java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
info:   java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
info:   java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596)
info:   java.base/java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:276)
info:   java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:1024)
info:   java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
info:   java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
info:   java.base/java.util.stream.ReduceOps$ReduceTask.doLeaf(ReduceOps.java:960)
info:   java.base/java.util.stream.ReduceOps$ReduceTask.doLeaf(ReduceOps.java:934)
info:   java.base/java.util.stream.AbstractTask.compute(AbstractTask.java:327)
info:   java.base/java.util.concurrent.CountedCompleter.exec(CountedCompleter.java:754)
info:   java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387)
info:   java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312)
info:   java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843)
info:   java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808)
info:   java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188)
info: [ERROR] Failed to execute goal io.quarkus:quarkus-maven-plugin:3.17.5:dev (default-cli) on project subscriber: Unable to execute mojo: Error reading file /Users/mtoohey/Code/ftl/backend/runner/pubsub/testdata/java/subscriber/src/main/java/xyz/block/ftl/java/test/subscriber/Subscriber.java: file: /Users/mtoohey/Code/ftl/backend/runner/pubsub/testdata/java/subscriber/src/main/java/xyz/block/ftl/java/test/subscriber/Subscriber.java; reason: the Java file contained parse errors -> [Help 1]
info: [ERROR] 
info: [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
info: [ERROR] Re-run Maven using the -X switch to enable full debug logging.
info: [ERROR] 
info: [ERROR] For more information about the errors and possible solutions, please read the following articles:
info: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
error:subscriber: Dev mode process exited with error: exit status 1
✔[publisher]   ◞[subscriber]