[INFO] cloning repository https://github.com/kyujulian/RustyTracer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kyujulian/RustyTracer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkyujulian%2FRustyTracer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkyujulian%2FRustyTracer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a904d5f69f92a7824a269baa1d1824bb18f65178
[INFO] checking kyujulian/RustyTracer against master#75530e9f72a1990ed2305e16fd51d02f47048f12 for pr-138676
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkyujulian%2FRustyTracer" "/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 outputs/image_2.ppm
[INFO] [stderr] error: unable to write file outputs/image_dielectric_19.ppm
[INFO] [stderr] Updating files:  47% (9/19)
Updating files:  52% (10/19)
Updating files:  57% (11/19)
Updating files:  63% (12/19)
Updating files:  68% (13/19)
Updating files:  73% (14/19)
Updating files:  78% (15/19)
Updating files:  84% (16/19)
Updating files:  89% (17/19)
Updating files:  94% (18/19)
Updating files: 100% (19/19)
Updating files: 100% (19/19), done.
[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/kyujulian/RustyTracer

Caused by:
    command failed: exit status: 128