[INFO] cloning repository https://github.com/duffrecords/mellotron
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/duffrecords/mellotron" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fduffrecords%2Fmellotron", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fduffrecords%2Fmellotron'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b1110b96e4bb98229c81e4d29203f28d0e7f9f7f
[INFO] checking duffrecords/mellotron against master#91775dbec9771aa0c1b9ebe268eb5bd271e79a7a for pr-139087-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fduffrecords%2Fmellotron" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/duffrecords/mellotron
[INFO] finished tweaking git repo https://github.com/duffrecords/mellotron
[INFO] tweaked toml for git repo https://github.com/duffrecords/mellotron written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/duffrecords/mellotron on toolchain 91775dbec9771aa0c1b9ebe268eb5bd271e79a7a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+91775dbec9771aa0c1b9ebe268eb5bd271e79a7a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/duffrecords/mellotron 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" "+91775dbec9771aa0c1b9ebe268eb5bd271e79a7a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/davemollen/rust-lv2.git`
[INFO] [stderr] error: patch location `https://github.com/davemollen/rust-lv2.git?branch=master` does not contain packages matching `lv2-buf-size`
[INFO] [stderr] help: check `lv2-buf-size` patch definition for `https://github.com/rust-lang/crates.io-index` in `/workspace/builds/worker-3-tc1/source/Cargo.toml`


overridden task result to prepare-fail:unknown

Caused by:
    0: uncategorized prepare error
    1: command failed: exit status: 101
       
           Updating git repository `https://github.com/davemollen/rust-lv2.git`
       error: patch location `https://github.com/davemollen/rust-lv2.git?branch=master` does not contain packages matching `lv2-buf-size`
       help: check `lv2-buf-size` patch definition for `https://github.com/rust-lang/crates.io-index` in `/workspace/builds/worker-3-tc1/source/Cargo.toml`