[INFO] fetching crate how 0.1.0...
[INFO] testing how-0.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate how 0.1.0 into /workspace/builds/worker-82/source
[INFO] validating manifest of crates.io crate how 0.1.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate how 0.1.0
[INFO] finished tweaking crates.io crate how 0.1.0
[INFO] tweaked toml for crates.io crate how 0.1.0 written to /workspace/builds/worker-82/source/Cargo.toml
[INFO] crate crates.io crate how 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-82/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-82/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af6d880a7db18834932195eb3586e7df44bcf47b3082223d8e1ed5b586870199
[INFO] running `Command { std: "docker" "start" "-a" "af6d880a7db18834932195eb3586e7df44bcf47b3082223d8e1ed5b586870199", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af6d880a7db18834932195eb3586e7df44bcf47b3082223d8e1ed5b586870199", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af6d880a7db18834932195eb3586e7df44bcf47b3082223d8e1ed5b586870199", kill_on_drop: false }`
[INFO] [stdout] af6d880a7db18834932195eb3586e7df44bcf47b3082223d8e1ed5b586870199
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-82/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-82/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 065d4fe2b6342599805c3df4fd43b78649797fb3b458ce3f490df81d6af73a3a
[INFO] running `Command { std: "docker" "start" "-a" "065d4fe2b6342599805c3df4fd43b78649797fb3b458ce3f490df81d6af73a3a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling how v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "065d4fe2b6342599805c3df4fd43b78649797fb3b458ce3f490df81d6af73a3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "065d4fe2b6342599805c3df4fd43b78649797fb3b458ce3f490df81d6af73a3a", kill_on_drop: false }`
[INFO] [stdout] 065d4fe2b6342599805c3df4fd43b78649797fb3b458ce3f490df81d6af73a3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-82/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-82/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c6d5954014eb487438b0011bff5fe25e5a2c06ebc45be6b166eb70c2dd6227d
[INFO] running `Command { std: "docker" "start" "-a" "7c6d5954014eb487438b0011bff5fe25e5a2c06ebc45be6b166eb70c2dd6227d", kill_on_drop: false }`
[INFO] [stderr]    Compiling how v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "7c6d5954014eb487438b0011bff5fe25e5a2c06ebc45be6b166eb70c2dd6227d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c6d5954014eb487438b0011bff5fe25e5a2c06ebc45be6b166eb70c2dd6227d", kill_on_drop: false }`
[INFO] [stdout] 7c6d5954014eb487438b0011bff5fe25e5a2c06ebc45be6b166eb70c2dd6227d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-82/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-82/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b02eb132f0cc761b2434f0be40385297d3c91a00e388cd1ec10b2b0a014f2951
[INFO] running `Command { std: "docker" "start" "-a" "b02eb132f0cc761b2434f0be40385297d3c91a00e388cd1ec10b2b0a014f2951", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/how-9defd0cdd5b168cc)
[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" "b02eb132f0cc761b2434f0be40385297d3c91a00e388cd1ec10b2b0a014f2951", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b02eb132f0cc761b2434f0be40385297d3c91a00e388cd1ec10b2b0a014f2951", kill_on_drop: false }`
[INFO] [stdout] b02eb132f0cc761b2434f0be40385297d3c91a00e388cd1ec10b2b0a014f2951