If I understand correctly, everything is working as intended: a fuzzer caught a bug in an unreleased version of clang. The title makes it sound like somebody fucked up pretty badly.
Indeed, the commit hash reported in the version corresponds to something that landed on master at 11PM this Monday.
Clang is the lucky one here, it has both SQLite and Dr Hipp on its side.
Rust has Crater which allows new rustc builds to be run against the entire public crates.io dgraph.