[INFO] fetching crate unsafe-io 0.7.1...
[INFO] checking unsafe-io-0.7.1 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate unsafe-io 0.7.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate unsafe-io 0.7.1 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unsafe-io 0.7.1
[INFO] finished tweaking crates.io crate unsafe-io 0.7.1
[INFO] tweaked toml for crates.io crate unsafe-io 0.7.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate unsafe-io 0.7.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 446c048358a5faa16c227ea9521c4411b75f597367ddf3b991ddf30220b9ef8b
[INFO] running `Command { std: "docker" "start" "-a" "446c048358a5faa16c227ea9521c4411b75f597367ddf3b991ddf30220b9ef8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "446c048358a5faa16c227ea9521c4411b75f597367ddf3b991ddf30220b9ef8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "446c048358a5faa16c227ea9521c4411b75f597367ddf3b991ddf30220b9ef8b", kill_on_drop: false }`
[INFO] [stdout] 446c048358a5faa16c227ea9521c4411b75f597367ddf3b991ddf30220b9ef8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b87f9c5cc39d462bd1cb8eb54335563c8b7b4ca937753a38fa60c80a0e47397
[INFO] running `Command { std: "docker" "start" "-a" "9b87f9c5cc39d462bd1cb8eb54335563c8b7b4ca937753a38fa60c80a0e47397", kill_on_drop: false }`
[INFO] [stderr]    Compiling io-lifetimes v0.2.0
[INFO] [stderr]    Compiling unsafe-io v0.7.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `Command { std: "docker" "inspect" "9b87f9c5cc39d462bd1cb8eb54335563c8b7b4ca937753a38fa60c80a0e47397", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b87f9c5cc39d462bd1cb8eb54335563c8b7b4ca937753a38fa60c80a0e47397", kill_on_drop: false }`
[INFO] [stdout] 9b87f9c5cc39d462bd1cb8eb54335563c8b7b4ca937753a38fa60c80a0e47397