[INFO] fetching crate swap-n 0.1.1...
[INFO] testing swap-n-0.1.1 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate swap-n 0.1.1 into /workspace/builds/worker-56/source
[INFO] validating manifest of crates.io crate swap-n 0.1.1 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 swap-n 0.1.1
[INFO] finished tweaking crates.io crate swap-n 0.1.1
[INFO] tweaked toml for crates.io crate swap-n 0.1.1 written to /workspace/builds/worker-56/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] [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-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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] bf38662a8e7e89c7f1e6b410643ea73a3b986fc8c3904497410fadde82041a90
[INFO] running `Command { std: "docker" "start" "-a" "bf38662a8e7e89c7f1e6b410643ea73a3b986fc8c3904497410fadde82041a90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf38662a8e7e89c7f1e6b410643ea73a3b986fc8c3904497410fadde82041a90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf38662a8e7e89c7f1e6b410643ea73a3b986fc8c3904497410fadde82041a90", kill_on_drop: false }`
[INFO] [stdout] bf38662a8e7e89c7f1e6b410643ea73a3b986fc8c3904497410fadde82041a90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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] 14e173fd85410b67cff97ea785f9338d74590837bc6f5a5bd7915de783964cfd
[INFO] running `Command { std: "docker" "start" "-a" "14e173fd85410b67cff97ea785f9338d74590837bc6f5a5bd7915de783964cfd", kill_on_drop: false }`
[INFO] [stderr]    Compiling swap-n v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "14e173fd85410b67cff97ea785f9338d74590837bc6f5a5bd7915de783964cfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14e173fd85410b67cff97ea785f9338d74590837bc6f5a5bd7915de783964cfd", kill_on_drop: false }`
[INFO] [stdout] 14e173fd85410b67cff97ea785f9338d74590837bc6f5a5bd7915de783964cfd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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] 65f16f16def365159acdf3f085a6c2c090482583e537cb3922ceee08704c1f55
[INFO] running `Command { std: "docker" "start" "-a" "65f16f16def365159acdf3f085a6c2c090482583e537cb3922ceee08704c1f55", kill_on_drop: false }`
[INFO] [stderr]    Compiling swap-n v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "65f16f16def365159acdf3f085a6c2c090482583e537cb3922ceee08704c1f55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65f16f16def365159acdf3f085a6c2c090482583e537cb3922ceee08704c1f55", kill_on_drop: false }`
[INFO] [stdout] 65f16f16def365159acdf3f085a6c2c090482583e537cb3922ceee08704c1f55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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] 668bde106ef4870e63b167ae3332183ba6deccf32c8159775bd32c2ec0210630
[INFO] running `Command { std: "docker" "start" "-a" "668bde106ef4870e63b167ae3332183ba6deccf32c8159775bd32c2ec0210630", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/swap_n-b3eea9eb037bf158)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::four_elements ... ok
[INFO] [stdout] test tests::most_basic_functionality ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests swap-n
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - (line 29) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - (line 22) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - (line 38) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - (line 7) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.89s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "668bde106ef4870e63b167ae3332183ba6deccf32c8159775bd32c2ec0210630", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "668bde106ef4870e63b167ae3332183ba6deccf32c8159775bd32c2ec0210630", kill_on_drop: false }`
[INFO] [stdout] 668bde106ef4870e63b167ae3332183ba6deccf32c8159775bd32c2ec0210630