[INFO] fetching crate retain_mut 0.1.6...
[INFO] testing retain_mut-0.1.6 against 1.59.0 for beta-1.60-1
[INFO] extracting crate retain_mut 0.1.6 into /workspace/builds/worker-22/source
[INFO] validating manifest of crates.io crate retain_mut 0.1.6 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate retain_mut 0.1.6
[INFO] finished tweaking crates.io crate retain_mut 0.1.6
[INFO] tweaked toml for crates.io crate retain_mut 0.1.6 written to /workspace/builds/worker-22/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bef6e2d97c45aa58442cc5fba363689061920735966721aa7ffe086c8d8ad48a
[INFO] running `Command { std: "docker" "start" "-a" "bef6e2d97c45aa58442cc5fba363689061920735966721aa7ffe086c8d8ad48a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bef6e2d97c45aa58442cc5fba363689061920735966721aa7ffe086c8d8ad48a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bef6e2d97c45aa58442cc5fba363689061920735966721aa7ffe086c8d8ad48a", kill_on_drop: false }`
[INFO] [stdout] bef6e2d97c45aa58442cc5fba363689061920735966721aa7ffe086c8d8ad48a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b3910b912034f0dfdae294e16399ce0a403556951866b46427492fbefea2a18
[INFO] running `Command { std: "docker" "start" "-a" "8b3910b912034f0dfdae294e16399ce0a403556951866b46427492fbefea2a18", kill_on_drop: false }`
[INFO] [stderr]    Compiling retain_mut v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "8b3910b912034f0dfdae294e16399ce0a403556951866b46427492fbefea2a18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b3910b912034f0dfdae294e16399ce0a403556951866b46427492fbefea2a18", kill_on_drop: false }`
[INFO] [stdout] 8b3910b912034f0dfdae294e16399ce0a403556951866b46427492fbefea2a18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 65f6a3015fa8dd7345776adb79af8fc9691f99b717d76b0262f412550b9c0c49
[INFO] running `Command { std: "docker" "start" "-a" "65f6a3015fa8dd7345776adb79af8fc9691f99b717d76b0262f412550b9c0c49", kill_on_drop: false }`
[INFO] [stderr]    Compiling retain_mut v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "65f6a3015fa8dd7345776adb79af8fc9691f99b717d76b0262f412550b9c0c49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65f6a3015fa8dd7345776adb79af8fc9691f99b717d76b0262f412550b9c0c49", kill_on_drop: false }`
[INFO] [stdout] 65f6a3015fa8dd7345776adb79af8fc9691f99b717d76b0262f412550b9c0c49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1c2e48a1c8f737d458d9552884d47cf1800614651c6781169d11b1e6eae7f3e2
[INFO] running `Command { std: "docker" "start" "-a" "1c2e48a1c8f737d458d9552884d47cf1800614651c6781169d11b1e6eae7f3e2", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/retain_mut-c5d4b7b23c083f0e)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests retain_mut
[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] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 24) ... ok
[INFO] [stdout] test src/lib.rs - (line 33) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.27s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1c2e48a1c8f737d458d9552884d47cf1800614651c6781169d11b1e6eae7f3e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c2e48a1c8f737d458d9552884d47cf1800614651c6781169d11b1e6eae7f3e2", kill_on_drop: false }`
[INFO] [stdout] 1c2e48a1c8f737d458d9552884d47cf1800614651c6781169d11b1e6eae7f3e2