40:49.34 ../../config/nsinstall -D ../../dist/linux-x86_64/xpi/ 40:49.34 /var/tmp/portage/www-client/firefox-83.0/work/firefox_build/instrumented/_virtualenvs/init_py3/bin/python -m mozbuild.action.langpack_manifest --locales en-US --min-app-ver 83.0 --max-app-ver 83.* --app-name 'Firefox' --l10n-basedir '/var/tmp/portage/www-client/firefox-83.0/homedir/.mozbuild/l10n-central' --defines /var/tmp/portage/www-client/firefox-83.0/work/firefox-83.0/toolkit/locales/en-US/defines.inc /var/tmp/portage/www-client/firefox-83.0/work/firefox-83.0/browser/locales/en-US/defines.inc --langpack-eid 'langpack-en-US@firefox.mozilla.org' --input ../../dist/xpi-stage/locale-en-US 40:49.78 /var/tmp/portage/www-client/firefox-83.0/work/firefox_build/instrumented/_virtualenvs/init_py3/bin/python -m mozbuild.action.zip -C ../../dist/xpi-stage/locale-en-US -x **/*.manifest -x **/*.js -x **/*.ini /var/tmp/portage/www-client/firefox-83.0/work/firefox_build/instrumented/dist/linux-x86_64/xpi/firefox-83.0.en-US.langpack.xpi chrome localization browser manifest.json 40:50.16 gmake[4]: Leaving directory '/var/tmp/portage/www-client/firefox-83.0/work/firefox_build/instrumented/browser/locales' 40:50.16 gmake[3]: Leaving directory '/var/tmp/portage/www-client/firefox-83.0/work/firefox_build/instrumented/browser/locales' 40:50.16 gmake[2]: Leaving directory '/var/tmp/portage/www-client/firefox-83.0/work/firefox_build/instrumented/browser/installer' 40:50.16 gmake[2]: Entering directory '/var/tmp/portage/www-client/firefox-83.0/work/firefox_build/instrumented/browser/installer' 40:50.16 gmake[2]: Nothing to be done for 'tools'. 40:50.16 gmake[2]: Leaving directory '/var/tmp/portage/www-client/firefox-83.0/work/firefox_build/instrumented/browser/installer' 40:50.16 gmake[1]: Leaving directory '/var/tmp/portage/www-client/firefox-83.0/work/firefox_build/instrumented/browser/installer' 40:50.16 gmake: Leaving directory '/var/tmp/portage/www-client/firefox-83.0/work/firefox_build/instrumented' Error: cannot open display: :2 Firefox exited with code 1 during profile initialization Error running mach: ['build', '--verbose'] Reproducible: Always
Created attachment 677467 [details] build.log.bz2
Created attachment 677470 [details] emerge --info www-client/firefox
You will probably have to debug what happens to your Xvfb setup when this problem will be reproducible.
It was a transient error. In the process of debugging it, it went away after a reboot. Computers >.<