Some very liberal code is currently trying to parse commit summaries aggressively as Git URIs, and leading to this:
Failed to parse URI "Summary: Ref T11137. This addresses three general issues:" as a Git URI.
Currently visible here:
https://secure.phabricator.com/rPHU8bb124c37de3dfa29fcd23d4be53a5696b705c81
Don't detect these as Git URIs.