#16349: Nondeterministic T3424 timeouts on CI -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.9 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- The `T3424` test suite occasionally times out on CI, forcing me to restart builds to get a green build status. Here is [https://ghc- gitlab.s3.amazonaws.com/6b/86/6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b/2019_02_21/31580/50071/job.log ?response-content-type=text/plain%3B%20charset%3Dutf-8&response-content- disposition=inline&X-Amz-Expires=600&X-Amz-Date=20190221T105115Z&X-Amz- Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAI3NPPHETCY4XXTOA/20190221 /us-east-1/s3/aws4_request&X-Amz-SignedHeaders=host&X-Amz- Signature=521f4993a8af6215a34603cb8dfb26f10e3f2a335229227e65b92aa4ced557e9 one example] from a `validate-x86_64-linux-deb9-unreg` run: {{{ Timeout happened...killed process "cd "rts/T3424.run" && "/builds/ghc/ghc/inplace/bin/ghc-stage2" -o T3424 T3424.hs -dcore-lint -dstg-lint -dcmm-lint -no-user-package-db -rtsopts -optc-fno-builtin -fno- warn-missed-specialisations -fshow-warning-groups -fdiagnostics- color=never -fno-diagnostics-show-caret -Werror=compat -dno-debug-output "... Compile failed (exit code 99) errors were: [1 of 1] Compiling Main ( T3424.hs, T3424.o ) *** unexpected failure for T3424(normal) <elided> Unexpected results from: TEST="T3424" SUMMARY for test run started at Thu Feb 21 05:18:04 2019 UTC 1:15:50 spent to go through 6839 total tests, which gave rise to 21103 test cases, of which 13986 were skipped 38 had missing libraries 6977 expected passes 101 expected failures 0 caused framework failures 0 caused framework warnings 0 unexpected passes 1 unexpected failures 0 unexpected stat failures Unexpected failures: rts/T3424.run T3424 [exit code non-0] (normal) }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16349 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler