Fix haddocks for marker events in Debug.Trace

31 jobs for master in 174 minutes and 20 seconds (queued for 2 seconds)
Name Stage Failure
failed
validate-x86_64-linux-deb9-debug Build
$ cp -Rf $HOME/.cabal cabal-cache
Uploading artifacts...
ghc-*.tar.xz: found 1 matching files
junit.xml: found 1 matching files

Uploading artifacts to coordinator... ok
id=161161 responseStatus=201 Created token=xSTMTZ5i
Uploading artifacts...
junit.xml: found 1 matching files

Uploading artifacts to coordinator... ok
id=161161 responseStatus=201 Created token=xSTMTZ5i
ERROR: Job failed: exit code 1