[INFO] crate mongo 0.0.1 is already in cache
[INFO] extracting crate mongo 0.0.1 into work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/reg/mongo/0.0.1
[INFO] extracting crate mongo 0.0.1 into work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/reg/mongo/0.0.1
[INFO] validating manifest of mongo-0.0.1 on toolchain master#d99a320cba42f661aebfa1293b7b2ec3603dda75
[ERROR] this task or one of its parent failed!
[ERROR] overridden task result to build-fail:broken
[ERROR] caused by: missing Cargo.toml for mongo-0.0.1
[ERROR]