emacs segfault

[ng0]

I'm not sure how relevant / important this is or if the fault is
at our side somehow, but here's the segfault output I just got
when I was editing a file.

address@hidden ~/src/guix/guix$ emacs gnu/packages/telephony.scm 
Fatal error 11: Segmentation fault
Backtrace:
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x504142]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x4ebec9]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x5030ee]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x5032f3]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x50337c]
/gnu/store/iwgi9001dmmihrjg4rqhd6pa6788prjw-glibc-2.24/lib/libpthread.so.0(+0x110f0)[0x7ff9e12eb0f0]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x4a4a58]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x536d6a]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1(re_search_2+0x399)[0x539fd9]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x52f405]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x52fe91]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x530087]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x55cd5e]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x590473]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x55cbb3]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x590473]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x55cbb3]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x590473]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x55cbb3]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x590473]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x55cbb3]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x590473]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x55cbb3]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x590473]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x55c7e2]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x55cbb3]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x590473]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x55c7e2]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x55cbb3]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x590473]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x55c7e2]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x55cbb3]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x590473]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x55cbb3]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x590473]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x55cbb3]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x55e04c]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x55cc99]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x590473]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x55c7e2]
/gnu/store/q1hww7qf7agvp445qpwvas8ni0pgbyak-emacs-25.1/bin/emacs-25.1[0x55cbb3]
...
Segmentation fault