Build is failing on some of the first job-ubuntu- jobs
Please see https://gitlab.linphone.org/BC/public/linphone-desktop/pipelines
[ 69%] Completed 'EP_xerces'
[ 69%] Built target EP_xerces
[ 69%] Performing install step for 'EP_ffmpeg'
make[3]: warning: jobserver unavailable: using -j1. Add '+' to parent make rule.
[ 69%] Performing post-installation for 'EP_ffmpeg'
[ 69%] Completed 'EP_ffmpeg'
[ 69%] Built target EP_ffmpeg
make: *** [Makefile:84: all] Error 2