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runtime: "fatal error: all goroutines are asleep - deadlock!" with GC assist wait #39390
This is a failure on
@aclements pointed out that it is perhaps possible for GC goroutines to not be actively running yet (because the scheduler hasn't quite noticed) while there is a GC assist wait. But the mcount() check in checkdead seems like it should consider an M that hasn't yet considered GC work to still be running.