coverage-column-triangles randomly fails on quartz
From https://gitlab.freedesktop.org/cairo/cairo/-/jobs/11973886 (which comes from https://gitlab.freedesktop.org/cairo/cairo/-/pipelines/363494 which comes from the merge of !201 (merged))
TESTING coverage-column-triangles
coverage-column-triangles.quartz.argb32 [0x1]: PASS
coverage-column-triangles.quartz.rgb24 [0x1]: coverage-column-triangles.quartz.rgb24 [0x1]: !!!CRASHED!!!
coverage-column-triangles: CRASH! (quartz)
I think I already saw this recently in another MR and the pre-merge pipeline did not fail.