[INFO] fetching crate uavcan-core 0.0.1...
[INFO] building uavcan-core-0.0.1 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate uavcan-core 0.0.1 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate uavcan-core 0.0.1
[INFO] finished tweaking crates.io crate uavcan-core 0.0.1
[INFO] tweaked toml for crates.io crate uavcan-core 0.0.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate uavcan-core 0.0.1 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: failed to select a version for the requirement `syn = "^0.10.5"`
[INFO] [stderr]   version 0.10.5 is yanked
[INFO] [stderr]   version 0.10.6 is yanked
[INFO] [stderr]   version 0.10.7 is yanked
[INFO] [stderr]   version 0.10.8 is yanked
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `uavcan-derive v0.0.1`
[INFO] [stderr]     ... which satisfies dependency `uavcan-derive = "^0.0.1"` of package `uavcan-core v0.0.1 (/workspace/builds/worker-0-tc1/source)`


overridden task result to broken:yanked

Caused by:
    the crate depends on yanked dependencies: 
    
        Blocking waiting for file lock on package cache
        Updating crates.io index
    error: failed to select a version for the requirement `syn = "^0.10.5"`
      version 0.10.5 is yanked
      version 0.10.6 is yanked
      version 0.10.7 is yanked
      version 0.10.8 is yanked
    location searched: crates.io index
    required by package `uavcan-derive v0.0.1`
        ... which satisfies dependency `uavcan-derive = "^0.0.1"` of package `uavcan-core v0.0.1 (/workspace/builds/worker-0-tc1/source)`