Replicated on my local Ubuntu 20.04 system with systemd 245.4-4ubuntu3.1. It's a PEBCAK error where a user writes a .service file containing %i's, but instead of naming the file foo@bar.service, just names it foo.service. To replicate:
cd /etc/systemd/system curl -s -o testemail2jira.service 'https://hg.sr.ht/~redradishtech/testemail2jira/raw/testemail2jira%40.service?rev=tip' systemctl daemon-reload systemctl start testemail2jira On one of the last two steps everything freezes, errors start appearing: [system] Failed to activate service 'org.freedesktop.systemd1': timed out (service_start_timeout=25000ms) and /var/crash/_usr_lib_systemd_systemd.0.crash is created. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1887744 Title: systemd dumps core on starting service: Assertion 'u->instance' failed at src/core/load-fragment.c:4798 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1887744/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs