runtime/trace: timeouts on linux-arm-aws since 2022-06-08

[bcmills]

#!watchflakes
post <- pkg == "runtime/trace" && test == "" && !`panic: test timed out` && date < "2023-10-01"

greplogs -l -e 'Test killed with quit: ran too long .*\nFAIL\s+runtime/trace' --since=2022-01-01
2022-08-18T13:16:21-38edd9b/linux-arm-aws
2022-06-08T21:56:02-13f6be2/linux-arm-aws

(Attn @golang/runtime — note that linux/arm is a first-class port.)

[aclements]

It's possible this is related to #53979. I don't think it is, but since not all of the stacks are shown in either failure, it's hard to say for sure.

[mknyszek]

I suspect @aclements was right, given that we haven't seen any more failures. Closing optimistically.