Thanks to the rustc-1.76 prepared by the Ubuntu Foundations team, I believe we have working Firefox deb builds for the ARM architectures in the mozillateam ppa again, at least for focal which is still supported, so I'll close this accordingly.
** Changed in: firefox (Ubuntu) Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2049679 Title: firefox armhf/arm64 failing to build on 18.04/20.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/2049679/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs