[INFO] fetching crate rev_lines 0.2.1...
[INFO] testing rev_lines-0.2.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate rev_lines 0.2.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rev_lines 0.2.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rev_lines 0.2.1
[INFO] finished tweaking crates.io crate rev_lines 0.2.1
[INFO] tweaked toml for crates.io crate rev_lines 0.2.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 361fd8c22490700a0dbbc844b6da28ac87740b6323a28465ae1dc5efecffc9a8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "361fd8c22490700a0dbbc844b6da28ac87740b6323a28465ae1dc5efecffc9a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "361fd8c22490700a0dbbc844b6da28ac87740b6323a28465ae1dc5efecffc9a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "361fd8c22490700a0dbbc844b6da28ac87740b6323a28465ae1dc5efecffc9a8", kill_on_drop: false }`
[INFO] [stdout] 361fd8c22490700a0dbbc844b6da28ac87740b6323a28465ae1dc5efecffc9a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7483d7d0ca60ae279361c68db11c9faa4a5c522925fe4c6c49b970b2c63cf31
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d7483d7d0ca60ae279361c68db11c9faa4a5c522925fe4c6c49b970b2c63cf31", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rev_lines v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `Command { std: "docker" "inspect" "d7483d7d0ca60ae279361c68db11c9faa4a5c522925fe4c6c49b970b2c63cf31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7483d7d0ca60ae279361c68db11c9faa4a5c522925fe4c6c49b970b2c63cf31", kill_on_drop: false }`
[INFO] [stdout] d7483d7d0ca60ae279361c68db11c9faa4a5c522925fe4c6c49b970b2c63cf31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b4d14959cd7e1d8b52ce079f115c1a7f4c238cd898bddca1069c5017f2c88e4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7b4d14959cd7e1d8b52ce079f115c1a7f4c238cd898bddca1069c5017f2c88e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling rev_lines v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `Command { std: "docker" "inspect" "7b4d14959cd7e1d8b52ce079f115c1a7f4c238cd898bddca1069c5017f2c88e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b4d14959cd7e1d8b52ce079f115c1a7f4c238cd898bddca1069c5017f2c88e4", kill_on_drop: false }`
[INFO] [stdout] 7b4d14959cd7e1d8b52ce079f115c1a7f4c238cd898bddca1069c5017f2c88e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 19cdd7d10500b5f673b3131c761eeaaeaf316924c31f9502830e311b528366e6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "19cdd7d10500b5f673b3131c761eeaaeaf316924c31f9502830e311b528366e6", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rev_lines-4e12171e12521d5f
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::it_handles_file_with_multi_lines ... ok
[INFO] [stdout] test tests::it_handles_file_with_blank_lines ... ok
[INFO] [stdout] test tests::it_handles_empty_files ... ok
[INFO] [stdout] test tests::it_handles_file_with_one_line ... ok
[INFO] [stderr]    Doc-tests rev_lines
[INFO] [stdout] test tests::it_handles_file_with_multi_lines_and_with_capacity ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 8) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "19cdd7d10500b5f673b3131c761eeaaeaf316924c31f9502830e311b528366e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19cdd7d10500b5f673b3131c761eeaaeaf316924c31f9502830e311b528366e6", kill_on_drop: false }`
[INFO] [stdout] 19cdd7d10500b5f673b3131c761eeaaeaf316924c31f9502830e311b528366e6