I've got a core dump of Guile reaching the abort in call-scm<-scmn-scmn. #0 0x00007fb8912d8fec in __pthread_kill_implementation () from /gnu/store/ln6hxqjvz6m9gdd9s97pivlqck7hzs99-glibc-2.35/lib/libc.so.6 #1 0x00007fb89128f202 in raise () from /gnu/store/ln6hxqjvz6m9gdd9s97pivlqck7hzs99-glibc-2.35/lib/libc.so.6 #2 0x00007fb89127a45b in abort () from /gnu/store/ln6hxqjvz6m9gdd9s97pivlqck7hzs99-glibc-2.35/lib/libc.so.6 #3 0x00007fb8917f8133 in vm_regular_engine (thread=0x7fb88587b240) at /tmp/guix-build-guile-3.0.9.drv-0/guile-3.0.9/libguile/vm-engine.c:3467 #4 0x00007fb89189adb5 in scm_call_n (proc=, argv=, nargs=0) at /tmp/guix-build-guile-3.0.9.drv-0/guile-3.0.9/libguile/vm.c:1615 #5 0x00007fb891801b3e in scm_call_with_unblocked_asyncs (proc=#) at /tmp/guix-build-guile-3.0.9.drv-0/guile-3.0.9/libguile/async.c:406 #6 0x00007fb89188d390 in vm_regular_engine (thread=0x7fb88587b240) at /tmp/guix-build-guile-3.0.9.drv-0/guile-3.0.9/libguile/vm-engine.c:972 #7 0x00007fb89189adb5 in scm_call_n (proc=, argv=, nargs=0) at /tmp/guix-build-guile-3.0.9.drv-0/guile-3.0.9/libguile/vm.c:1615 This happened with /gnu/store/x4m56h5qkim0pnvx6vgvp541mrdwdrah-guile-3.0.9/bin/guile when being used by the Guix Build Coordinator.