[INFO] cloning repository https://github.com/mschrempf/binary-tree-fractal
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mschrempf/binary-tree-fractal" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmschrempf%2Fbinary-tree-fractal", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmschrempf%2Fbinary-tree-fractal'...
[INFO] [stderr] error: failed to write new configuration file /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmschrempf%2Fbinary-tree-fractal/config.lock
[INFO] [stderr] fatal: could not set 'core.repositoryformatversion' to '0'


this task or one of its parent failed: failed to clone https://github.com/mschrempf/binary-tree-fractal

Caused by:
    command failed: exit status: 128