[INFO] cloning repository https://github.com/mck0324/Rust-MessagePassing
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mck0324/Rust-MessagePassing" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmck0324%2FRust-MessagePassing", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmck0324%2FRust-MessagePassing'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 57e9737633d2356bd99ed9fca145fcd354b7661f
[INFO] building mck0324/Rust-MessagePassing against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmck0324%2FRust-MessagePassing" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] [stderr] error: Unable to create '/workspace/builds/worker-4-tc1/source/.git/refs/remotes/origin/HEAD.lock': No such file or directory
[INFO] [stderr] fatal: unable to update refs/remotes/origin/HEAD


ExecutionFailed(ExitStatus(unix_wait_status(32768)))

failed to checkout https://github.com/mck0324/Rust-MessagePassing