When running the jtreg test jdk/internal/vm/Continuation/Fuzz.java with (fast)debug binaries, we see timeouts like these on multiple platforms :

jdk/internal/vm/Continuation/Fuzz_preserve-fp on Linux x86_64 :

java.lang.AssertionError: Failed to compile int Fuzz.com_int(int,int) in 45000ms
at Fuzz.waitForCompilation(Fuzz.java:323)
at Fuzz.compile(Fuzz.java:357)
at Fuzz.testTrace(Fuzz.java:214)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:186)
at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:214)
at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:197)
at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:214)
at java.base/java.nio.file.FileChannelLinesSpliterator.forEachRemaining(FileChannelLinesSpliterator.java:130)
at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:570)
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:560)
at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:153)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:176)
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:265)
at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:632)
at Fuzz.testStream(Fuzz.java:204)
at Fuzz.testFile(Fuzz.java:189)
at Fuzz.runTests(Fuzz.java:111)
at Fuzz.main(Fuzz.java:105)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:565)
at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
at java.base/java.lang.Thread.run(Thread.java:1474)

Probably it makes sense to increase the COMPILATION_TIMEOUT when running with (fast)debug binaries.