[INFO] fetching crate pigeon-parrot 0.4.2...
[INFO] testing pigeon-parrot-0.4.2 against master#2fd6efc32704647e64d3d646d21c4c68eae100e4 for pr-149852-1
[INFO] extracting crate pigeon-parrot 0.4.2 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate pigeon-parrot 0.4.2
[INFO] finished tweaking crates.io crate pigeon-parrot 0.4.2
[INFO] tweaked toml for crates.io crate pigeon-parrot 0.4.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pigeon-parrot 0.4.2 on toolchain 2fd6efc32704647e64d3d646d21c4c68eae100e4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate pigeon-parrot 0.4.2 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" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "fetch" "--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 `winit = "^0.26.1"` (locked to 0.26.1)
[INFO] [stderr] candidate versions found which didn't match: 0.6.4, 0.6.3, 0.6.2, ...
[INFO] [stderr] location searched: crates.io index
[INFO] [stderr] required by package `pigeon-parrot v0.4.2 (/workspace/builds/worker-0-tc1/source)`


command failed: exit status: 101

    Blocking waiting for file lock on package cache
    Updating crates.io index
error: failed to select a version for the requirement `winit = "^0.26.1"` (locked to 0.26.1)
candidate versions found which didn't match: 0.6.4, 0.6.3, 0.6.2, ...
location searched: crates.io index
required by package `pigeon-parrot v0.4.2 (/workspace/builds/worker-0-tc1/source)`