[INFO] fetching crate m6stack 0.1.0...
[INFO] testing m6stack-0.1.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate m6stack 0.1.0 into /workspace/builds/worker-84/source
[INFO] validating manifest of crates.io crate m6stack 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 m6stack 0.1.0
[INFO] finished tweaking crates.io crate m6stack 0.1.0
[INFO] tweaked toml for crates.io crate m6stack 0.1.0 written to /workspace/builds/worker-84/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "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" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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] e5a01b539081d4405af5c443ae37e06f54c22c65a473120fef455292ec297bf9
[INFO] running `Command { std: "docker" "start" "-a" "e5a01b539081d4405af5c443ae37e06f54c22c65a473120fef455292ec297bf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5a01b539081d4405af5c443ae37e06f54c22c65a473120fef455292ec297bf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5a01b539081d4405af5c443ae37e06f54c22c65a473120fef455292ec297bf9", kill_on_drop: false }`
[INFO] [stdout] e5a01b539081d4405af5c443ae37e06f54c22c65a473120fef455292ec297bf9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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] 44eece28cb86eb0e42d140f4cad10cdf45cd3da15007ec5bee06108207b2d170
[INFO] running `Command { std: "docker" "start" "-a" "44eece28cb86eb0e42d140f4cad10cdf45cd3da15007ec5bee06108207b2d170", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling m6stack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.43s
[INFO] running `Command { std: "docker" "inspect" "44eece28cb86eb0e42d140f4cad10cdf45cd3da15007ec5bee06108207b2d170", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44eece28cb86eb0e42d140f4cad10cdf45cd3da15007ec5bee06108207b2d170", kill_on_drop: false }`
[INFO] [stdout] 44eece28cb86eb0e42d140f4cad10cdf45cd3da15007ec5bee06108207b2d170
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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] 19dde8eb299dd97403d6805a21b490d38856c253d992a364339e843abceb086e
[INFO] running `Command { std: "docker" "start" "-a" "19dde8eb299dd97403d6805a21b490d38856c253d992a364339e843abceb086e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling m6stack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.36s
[INFO] running `Command { std: "docker" "inspect" "19dde8eb299dd97403d6805a21b490d38856c253d992a364339e843abceb086e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19dde8eb299dd97403d6805a21b490d38856c253d992a364339e843abceb086e", kill_on_drop: false }`
[INFO] [stdout] 19dde8eb299dd97403d6805a21b490d38856c253d992a364339e843abceb086e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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] 8e2c76297f26569700f355f06ebf9c50f22c58f02da171fd814489b3ed7258a9
[INFO] running `Command { std: "docker" "start" "-a" "8e2c76297f26569700f355f06ebf9c50f22c58f02da171fd814489b3ed7258a9", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/m6stack-2eadc4a917cb7319)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests m6stack
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::test_stack_struct ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 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" "8e2c76297f26569700f355f06ebf9c50f22c58f02da171fd814489b3ed7258a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e2c76297f26569700f355f06ebf9c50f22c58f02da171fd814489b3ed7258a9", kill_on_drop: false }`
[INFO] [stdout] 8e2c76297f26569700f355f06ebf9c50f22c58f02da171fd814489b3ed7258a9