I started running into the following as well on macOS Tahoe while building in a Terminal window.
My workaround has been to write all stdout and stderr to a file and run it in the background like as follows: make > ~/build.log 2>&1 & Hope that helps, Patrick > On Jul 2, 2026, at 11:11 AM, Olivier Hallot <[email protected]> > wrote: > > + builds on current macOS started failing sporadically with > Traceback (most recent call last): > File "/Users/cloph/source/libo-core/bin/gla11y", line 1481, in <module> > main() > ~~~~^^ > File "/Users/cloph/source/libo-core/bin/gla11y", line 1477, in main > print(output_header.rstrip() + "\n" + output_buffer) > ~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > BlockingIOError: [Errno 35] write could not complete without blocking > and also JunitTest_framework_complex started failing > > - PythonTest_pyuno_pytests_testofficehelper fails in > https://ci.libreoffice.org/job/lo_ubsan/ > > - Some random failures in CI as well > > - > https://gerrit.libreoffice.org/q/PythonTest_pyuno_pytests_testofficehelper
