Raw error output:
Problem while applying patch in revision 240491:
hg error in cmd: hg import --no-commit -s 95 /tmp/tmpv77iq7yj: applying /tmp/tmpv77iq7yj
patching file browser/extensions/webcompat/data/shims.js
Hunk #1 FAILED at 986
1 out of 1 hunks FAILED -- saving rejects to file browser/extensions/webcompat/data/shims.js.rej
abort: patch failed to apply