[INFO] cloning repository https://github.com/icendoan/tolower
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/icendoan/tolower" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ficendoan%2Ftolower", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ficendoan%2Ftolower'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ae2ed31dd96baa7ae62ba9fe03e91f4d6ad926d7
[INFO] checking icendoan/tolower against master#a7fc463dd8fbeca800d4b3efc501069502cffe64 for pr-136988
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ficendoan%2Ftolower" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] error: failed to write new configuration file /workspace/builds/worker-7-tc1/source/.git/config.lock
[INFO] [stderr] fatal: could not set 'core.filemode' to 'true'


failed to checkout https://github.com/icendoan/tolower

Caused by:
    command failed: exit status: 128