[INFO] cloning repository https://github.com/Jonsnow-olah/ad-blinks
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Jonsnow-olah/ad-blinks" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJonsnow-olah%2Fad-blinks", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJonsnow-olah%2Fad-blinks'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 768142ac51b1f4e1aa1ac827d0f6df8f930a0df9
[INFO] checking Jonsnow-olah/ad-blinks against master#9e293ae9f8abecb0be5105787d181518c9012a19 for pr-146440-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJonsnow-olah%2Fad-blinks" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-4-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/Jonsnow-olah/ad-blinks
[INFO] finished tweaking git repo https://github.com/Jonsnow-olah/ad-blinks
[INFO] tweaked toml for git repo https://github.com/Jonsnow-olah/ad-blinks written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Jonsnow-olah/ad-blinks on toolchain 9e293ae9f8abecb0be5105787d181518c9012a19
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9e293ae9f8abecb0be5105787d181518c9012a19" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Jonsnow-olah/ad-blinks 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" "+9e293ae9f8abecb0be5105787d181518c9012a19" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: patch for `block-buffer` points to the same source, but patches must point to different sources
[INFO] [stderr] help: check `block-buffer` patch definition for `https://github.com/rust-lang/crates.io-index` in `/workspace/builds/worker-4-tc1/source/Cargo.toml`


overridden task result to prepare-fail:unknown

Caused by:
    0: uncategorized prepare error
    1: command failed: exit status: 101
       
           Blocking waiting for file lock on package cache
       error: patch for `block-buffer` points to the same source, but patches must point to different sources
       help: check `block-buffer` patch definition for `https://github.com/rust-lang/crates.io-index` in `/workspace/builds/worker-4-tc1/source/Cargo.toml`