[INFO] fetching crate lines_u8 0.1.0...
[INFO] testing lines_u8-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate lines_u8 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate lines_u8 0.1.0 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 lines_u8 0.1.0
[INFO] finished tweaking crates.io crate lines_u8 0.1.0
[INFO] tweaked toml for crates.io crate lines_u8 0.1.0 written to /workspace/builds/worker-6/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] [stderr]     Blocking waiting for file lock on package cache
[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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 905e2aaabcaaa9e7be138e026bb00aba7eebd20bc1d7aff510419bc4a3f2f28c
[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" "905e2aaabcaaa9e7be138e026bb00aba7eebd20bc1d7aff510419bc4a3f2f28c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "905e2aaabcaaa9e7be138e026bb00aba7eebd20bc1d7aff510419bc4a3f2f28c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "905e2aaabcaaa9e7be138e026bb00aba7eebd20bc1d7aff510419bc4a3f2f28c", kill_on_drop: false }`
[INFO] [stdout] 905e2aaabcaaa9e7be138e026bb00aba7eebd20bc1d7aff510419bc4a3f2f28c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 0c45e16c1c65efd49586f16f24c63038234e66a4d4b3bcac550af68210d7589f
[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" "0c45e16c1c65efd49586f16f24c63038234e66a4d4b3bcac550af68210d7589f", kill_on_drop: false }`
[INFO] [stderr]    Compiling lines_u8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "0c45e16c1c65efd49586f16f24c63038234e66a4d4b3bcac550af68210d7589f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c45e16c1c65efd49586f16f24c63038234e66a4d4b3bcac550af68210d7589f", kill_on_drop: false }`
[INFO] [stdout] 0c45e16c1c65efd49586f16f24c63038234e66a4d4b3bcac550af68210d7589f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 8203fd4d0ea0706c6aaedc9e18e0773077ab33a4107a9fc61e9799239db8407d
[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" "8203fd4d0ea0706c6aaedc9e18e0773077ab33a4107a9fc61e9799239db8407d", kill_on_drop: false }`
[INFO] [stderr]    Compiling lines_u8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "8203fd4d0ea0706c6aaedc9e18e0773077ab33a4107a9fc61e9799239db8407d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8203fd4d0ea0706c6aaedc9e18e0773077ab33a4107a9fc61e9799239db8407d", kill_on_drop: false }`
[INFO] [stdout] 8203fd4d0ea0706c6aaedc9e18e0773077ab33a4107a9fc61e9799239db8407d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8df301f8971a3b260659569598f923d68e985bef0a00d9485d1690e84031eebd
[INFO] running `Command { std: "docker" "start" "-a" "8df301f8971a3b260659569598f923d68e985bef0a00d9485d1690e84031eebd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.20s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/lines_u8-1cfca060fadb2735
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::lines_u8 ... ok
[INFO] [stderr]    Doc-tests lines_u8
[INFO] [stdout] test tests::read_line_u8 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8df301f8971a3b260659569598f923d68e985bef0a00d9485d1690e84031eebd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8df301f8971a3b260659569598f923d68e985bef0a00d9485d1690e84031eebd", kill_on_drop: false }`
[INFO] [stdout] 8df301f8971a3b260659569598f923d68e985bef0a00d9485d1690e84031eebd