[INFO] fetching crate lac 0.4.0...
[INFO] testing lac-0.4.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate lac 0.4.0 into /workspace/builds/worker-30/source
[INFO] validating manifest of crates.io crate lac 0.4.0 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 lac 0.4.0
[INFO] finished tweaking crates.io crate lac 0.4.0
[INFO] tweaked toml for crates.io crate lac 0.4.0 written to /workspace/builds/worker-30/source/Cargo.toml
[INFO] crate crates.io crate lac 0.4.0 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded signal-hook v0.3.9
[INFO] [stderr]   Downloaded async-recursion v0.3.2
[INFO] [stderr]   Downloaded async-std v1.10.0
[INFO] [stderr]   Downloaded argh_shared v0.1.4
[INFO] [stderr]   Downloaded argh_derive v0.1.4
[INFO] [stderr]   Downloaded async-process v1.1.0
[INFO] [stderr]   Downloaded claxon v0.4.3
[INFO] [stderr]   Downloaded cpufeatures v0.1.4
[INFO] [stderr]   Downloaded hound v3.4.0
[INFO] [stderr]   Downloaded sha2 v0.9.5
[INFO] [stderr]   Downloaded argh v0.1.4
[INFO] [stderr]   Downloaded async-attributes v1.1.2
[INFO] [stderr]   Downloaded libc v0.2.97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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] 44e83996086a1a9b79d50104732e0c58b52c4825a174c0d409bf3983a2143eb9
[INFO] running `Command { std: "docker" "start" "-a" "44e83996086a1a9b79d50104732e0c58b52c4825a174c0d409bf3983a2143eb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44e83996086a1a9b79d50104732e0c58b52c4825a174c0d409bf3983a2143eb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44e83996086a1a9b79d50104732e0c58b52c4825a174c0d409bf3983a2143eb9", kill_on_drop: false }`
[INFO] [stdout] 44e83996086a1a9b79d50104732e0c58b52c4825a174c0d409bf3983a2143eb9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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] 673bab35afa0f4183adfe2047c53e27267a4ed39ed8dedda0be6e3ff985b0a07
[INFO] running `Command { std: "docker" "start" "-a" "673bab35afa0f4183adfe2047c53e27267a4ed39ed8dedda0be6e3ff985b0a07", kill_on_drop: false }`
[INFO] [stderr]    Compiling lac v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `Command { std: "docker" "inspect" "673bab35afa0f4183adfe2047c53e27267a4ed39ed8dedda0be6e3ff985b0a07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "673bab35afa0f4183adfe2047c53e27267a4ed39ed8dedda0be6e3ff985b0a07", kill_on_drop: false }`
[INFO] [stdout] 673bab35afa0f4183adfe2047c53e27267a4ed39ed8dedda0be6e3ff985b0a07
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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] 9a2fdb4d4cbbecc6ee1f5c8e4717748967afae71b5e3d2edb8fd398f83d96d0f
[INFO] running `Command { std: "docker" "start" "-a" "9a2fdb4d4cbbecc6ee1f5c8e4717748967afae71b5e3d2edb8fd398f83d96d0f", kill_on_drop: false }`
[INFO] [stderr]    Compiling lac v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "9a2fdb4d4cbbecc6ee1f5c8e4717748967afae71b5e3d2edb8fd398f83d96d0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a2fdb4d4cbbecc6ee1f5c8e4717748967afae71b5e3d2edb8fd398f83d96d0f", kill_on_drop: false }`
[INFO] [stdout] 9a2fdb4d4cbbecc6ee1f5c8e4717748967afae71b5e3d2edb8fd398f83d96d0f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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] 242d7033245178d9e3371d9d7632e092c7ebf04d1c55f4cea3a3a7fba2f7ffb7
[INFO] running `Command { std: "docker" "start" "-a" "242d7033245178d9e3371d9d7632e092c7ebf04d1c55f4cea3a3a7fba2f7ffb7", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/lac-1695b77c4d1bff2f)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests lac
[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 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" "242d7033245178d9e3371d9d7632e092c7ebf04d1c55f4cea3a3a7fba2f7ffb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "242d7033245178d9e3371d9d7632e092c7ebf04d1c55f4cea3a3a7fba2f7ffb7", kill_on_drop: false }`
[INFO] [stdout] 242d7033245178d9e3371d9d7632e092c7ebf04d1c55f4cea3a3a7fba2f7ffb7