[INFO] updating cached repository WilliamB78/learning_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/WilliamB78/learning_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/WilliamB78/learning_rust" "work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/gh/WilliamB78/learning_rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/gh/WilliamB78/learning_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/WilliamB78/learning_rust" "work/ex/pr-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/gh/WilliamB78/learning_rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/gh/WilliamB78/learning_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d9457becd3649de5ffa40194e7afe861f7072092
[INFO] sha for GitHub repo WilliamB78/learning_rust: d9457becd3649de5ffa40194e7afe861f7072092
[INFO] validating manifest of WilliamB78/learning_rust 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 WilliamB78/learning_rust
[ERROR]