There are reproducible errors for: `tracing/eventsourcetrace/eventsourcetrace/eventsourcetrace.sh` when running jitstress jobs for HW intrinsics: https://ci.dot.net/job/dotnet_coreclr/job/master/job/jitstress/job/x64_checked_ubuntu_jitx86hwintrinsicnoavx_tst_prtest/17/ https://ci.dot.net/job/dotnet_coreclr/job/master/job/jitstress/job/x64_checked_osx10.12_jitincompletehwintrinsic_tst_prtest/12/ https://ci.dot.net/job/dotnet_coreclr/job/master/job/jitstress/job/x64_checked_osx10.12_jitx86hwintrinsicnosimd_tst_prtest/11/ https://ci.dot.net/job/dotnet_coreclr/job/master/job/jitstress/job/x64_checked_osx10.12_jitx86hwintrinsicnoavx2_flow_prtest/11/ Tests can be triggered with commands as in comment https://github.com/dotnet/coreclr/pull/15585#issuecomment-360864657 We cannot run CentOS7.1 since commands for this OS seems to not work currently.