Of the four <https://ci.libreoffice.org/job/gerrit_master/> buildsteps
(i.e., the Jenkins bots that check your Gerrit changes), only
gerrit_linux_clang_dbgutil runs uicheck (i.e., executing the various
UITests). Unfortunately, those UITests have a tendency to hang if they
fail, causing a Gerrit change's gerrit_linux_clang_dbgutil build to
abort. (Unfortunately, again, without much indication of what failed,
see
<https://gerrit.libreoffice.org/c/lode/+/91496/2#message-8e52d669f48a9edb5f183d1221164784059e8959>.)
So if Jenkins fails for one of your Gerrit changes with an aborted
gerrit_linux_clang_dbgutil, chances are high that that is due to some
failed UITest. To verify that locally:
* If you develop on Linux, run `make check` (but you should have done so
before submitting the change to Gerrit anyway). If it hangs, debug to
find out why and fix.
* If you develop on Windows:
** First run `make check` to find out whether it could be anything other
than a UITest that hung the Jenkins build ("check" includes "uicheck"
only on Linux, not on other platforms like Windows, and only
gerrit_linux_clang_dbgutil runs a full "check"; and you should have run
`make check` locally before submitting the change to Gerrit anyway).
** Since
<https://git.libreoffice.org/core/+/24e1563b5db3de5abac0d4fd0f737ec319e703e8%5E%21>
"Handle more Windows \r\n vs. \n differences in UITests", you should be
able to run `make uicheck` on Windows, with the following caveats:
*** It does not run headless, so pops up windows on your machine.
Better stay away from the machine while the build runs.
*** It appears to be unreliable when run with a build parallelism > 1.
So if you configure --without-parallelism, pass -j1 or no -j at all to
`make uicheck`. I have no idea what you need to do if you use the
implicit, unhelpful --with-parallelism, though. (And I didn't bother to
check what causes the unreliability. One source most likely are the
dubious UITests that use the clipboard, see the email thread starting at
<https://lists.freedesktop.org/archives/libreoffice/2020-April/084822.html>
"Linux SAL_USE_VCLPLUGIN=svp and the clipboard".)
** Again, if it hangs, debug to find out why and fix.
* If you develop on macOS (or anything else), you're likely lost for now.
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