[INFO] fetching crate returns 0.1.0...
[INFO] testing returns-0.1.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate returns 0.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate returns 0.1.0 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate returns 0.1.0
[INFO] finished tweaking crates.io crate returns 0.1.0
[INFO] tweaked toml for crates.io crate returns 0.1.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate returns 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8fff997068ae99d91bcd5e599425783b04dac55b404da106ca075168b8a1c454
[INFO] running `Command { std: "docker" "start" "-a" "8fff997068ae99d91bcd5e599425783b04dac55b404da106ca075168b8a1c454", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8fff997068ae99d91bcd5e599425783b04dac55b404da106ca075168b8a1c454", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fff997068ae99d91bcd5e599425783b04dac55b404da106ca075168b8a1c454", kill_on_drop: false }`
[INFO] [stdout] 8fff997068ae99d91bcd5e599425783b04dac55b404da106ca075168b8a1c454
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3357b4e58b330f5115dc880ca8a9f72778473aba87b212dfe23b10f66f9f0782
[INFO] running `Command { std: "docker" "start" "-a" "3357b4e58b330f5115dc880ca8a9f72778473aba87b212dfe23b10f66f9f0782", kill_on_drop: false }`
[INFO] [stderr]    Compiling returns v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "3357b4e58b330f5115dc880ca8a9f72778473aba87b212dfe23b10f66f9f0782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3357b4e58b330f5115dc880ca8a9f72778473aba87b212dfe23b10f66f9f0782", kill_on_drop: false }`
[INFO] [stdout] 3357b4e58b330f5115dc880ca8a9f72778473aba87b212dfe23b10f66f9f0782
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80373ae6a83fd1707179d9eb5460f87b86bbad0a349bcb8e2e2eedf5ff686c16
[INFO] running `Command { std: "docker" "start" "-a" "80373ae6a83fd1707179d9eb5460f87b86bbad0a349bcb8e2e2eedf5ff686c16", kill_on_drop: false }`
[INFO] [stderr]    Compiling returns v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "80373ae6a83fd1707179d9eb5460f87b86bbad0a349bcb8e2e2eedf5ff686c16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80373ae6a83fd1707179d9eb5460f87b86bbad0a349bcb8e2e2eedf5ff686c16", kill_on_drop: false }`
[INFO] [stdout] 80373ae6a83fd1707179d9eb5460f87b86bbad0a349bcb8e2e2eedf5ff686c16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 94cc68d1cd6be4a55b7d26ec36043c95fec7bd2605907ca433eb36935f21fc1e
[INFO] running `Command { std: "docker" "start" "-a" "94cc68d1cd6be4a55b7d26ec36043c95fec7bd2605907ca433eb36935f21fc1e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/returns-4544bb748d0615b9)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "94cc68d1cd6be4a55b7d26ec36043c95fec7bd2605907ca433eb36935f21fc1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94cc68d1cd6be4a55b7d26ec36043c95fec7bd2605907ca433eb36935f21fc1e", kill_on_drop: false }`
[INFO] [stdout] 94cc68d1cd6be4a55b7d26ec36043c95fec7bd2605907ca433eb36935f21fc1e