[INFO] cloning repository https://github.com/Daltonhensley19/dithering
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Daltonhensley19/dithering" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDaltonhensley19%2Fdithering", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDaltonhensley19%2Fdithering'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6c0f45a076fa055eb01ca583a5e742f0a6c2fd7e
[INFO] checking Daltonhensley19/dithering against master#779e19d8baa3e3625bd4fc5c85cbb2ad47b43155 for pr-147589-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDaltonhensley19%2Fdithering" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Daltonhensley19/dithering
[INFO] finished tweaking git repo https://github.com/Daltonhensley19/dithering
[INFO] tweaked toml for git repo https://github.com/Daltonhensley19/dithering written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Daltonhensley19/dithering on toolchain 779e19d8baa3e3625bd4fc5c85cbb2ad47b43155
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Daltonhensley19/dithering already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for the requirement `u = "^0.2.0"` (locked to 0.2.0)
[INFO] [stderr] candidate versions found which didn't match: 0.0.1
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `dithering v0.1.0 (/workspace/builds/worker-6-tc1/source)`


command failed: exit status: 101

    Updating crates.io index
error: failed to select a version for the requirement `u = "^0.2.0"` (locked to 0.2.0)
candidate versions found which didn't match: 0.0.1
location searched: crates.io index
required by package `dithering v0.1.0 (/workspace/builds/worker-6-tc1/source)`