[INFO] crate matchdb 0.0.1 is already in cache
[INFO] extracting crate matchdb 0.0.1 into work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/reg/matchdb/0.0.1
[INFO] extracting crate matchdb 0.0.1 into work/ex/pr-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/reg/matchdb/0.0.1
[INFO] validating manifest of matchdb-0.0.1 on toolchain master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980
[ERROR] this task or one of its parent failed!
[ERROR] overridden task result to build-fail:broken
[ERROR] caused by: missing Cargo.toml for matchdb-0.0.1
[ERROR]