[INFO] cloning repository https://github.com/polyfractal/quicksilver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/polyfractal/quicksilver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpolyfractal%2Fquicksilver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpolyfractal%2Fquicksilver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1120a58dd8d70d974c3d5ba9863649d9c5e1bdfd
[INFO] checking polyfractal/quicksilver against master#cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9 for pr-136968
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpolyfractal%2Fquicksilver" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] [stderr] error: unable to write file src/hll.rs
[INFO] [stderr] error: unable to write file src/lib.rs
[INFO] [stderr] error: unable to write file src/pcsa.rs
[INFO] [stderr] fatal: unable to checkout working tree
[INFO] [stderr] warning: Clone succeeded, but checkout failed.
[INFO] [stderr] You can inspect what was checked out with 'git status'
[INFO] [stderr] and retry with 'git restore --source=HEAD :/'
[INFO] [stderr] 


failed to checkout https://github.com/polyfractal/quicksilver

Caused by:
    command failed: exit status: 128