[INFO] updating cached repository https://github.com/LyricZhao/OS-Lab
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/LyricZhao/OS-Lab
[INFO] [stderr]    92e825a..9bf8568  lab-5      -> lab-5
[INFO] [stderr]    3c7dddb..4a95492  lab-6      -> lab-6
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ab9b2d6601eeab20c76809efa2cdecb5a68c5787
[ERROR] this task or one of its parent failed!
[ERROR] overridden task result to broken:cargo-toml
[ERROR] caused by: missing Cargo.toml
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.