[INFO] updating cached repository https://github.com/spiveeworks/lvalue-free-prototype
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/spiveeworks/lvalue-free-prototype
[INFO] [stderr]    b658fbd..9a43eb6  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9a43eb695fc919467e52b7cd8e0cf449c50fb1f3
[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.