[INFO] cloning repository https://github.com/rinatz/ninety-nine-rust-problems [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rinatz/ninety-nine-rust-problems" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frinatz%2Fninety-nine-rust-problems", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frinatz%2Fninety-nine-rust-problems'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] dd78a35a6b216c4d0ae7ec18807869ecc358c23f [ERROR] this task or one of its parent failed! [ERROR] command failed: exit status: 1 [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.