[INFO] fetching crate bare-io 0.2.1...
[INFO] testing bare-io-0.2.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate bare-io 0.2.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate bare-io 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 bare-io 0.2.1
[INFO] finished tweaking crates.io crate bare-io 0.2.1
[INFO] tweaked toml for crates.io crate bare-io 0.2.1 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] 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] b13c399696a44f6204ec9648b35ba118402e9ea1a758c0a5e2fb9bdac244e00b
[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" "b13c399696a44f6204ec9648b35ba118402e9ea1a758c0a5e2fb9bdac244e00b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b13c399696a44f6204ec9648b35ba118402e9ea1a758c0a5e2fb9bdac244e00b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b13c399696a44f6204ec9648b35ba118402e9ea1a758c0a5e2fb9bdac244e00b", kill_on_drop: false }`
[INFO] [stdout] b13c399696a44f6204ec9648b35ba118402e9ea1a758c0a5e2fb9bdac244e00b
[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] 31b91a38ee06cedcdf32a9bb783a6aa6c6ea66aaf41f0b1a3ce04eca33f84807
[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" "31b91a38ee06cedcdf32a9bb783a6aa6c6ea66aaf41f0b1a3ce04eca33f84807", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling bare-io v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.09s
[INFO] running `Command { std: "docker" "inspect" "31b91a38ee06cedcdf32a9bb783a6aa6c6ea66aaf41f0b1a3ce04eca33f84807", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31b91a38ee06cedcdf32a9bb783a6aa6c6ea66aaf41f0b1a3ce04eca33f84807", kill_on_drop: false }`
[INFO] [stdout] 31b91a38ee06cedcdf32a9bb783a6aa6c6ea66aaf41f0b1a3ce04eca33f84807
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9fb81f7fa75d48d6513387c2c73cc3de342802a6bb7e089003c247dee82edac3
[INFO] running `Command { std: "docker" "start" "-a" "9fb81f7fa75d48d6513387c2c73cc3de342802a6bb7e089003c247dee82edac3", kill_on_drop: false }`
[INFO] [stderr]    Compiling bare-io v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.42s
[INFO] running `Command { std: "docker" "inspect" "9fb81f7fa75d48d6513387c2c73cc3de342802a6bb7e089003c247dee82edac3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fb81f7fa75d48d6513387c2c73cc3de342802a6bb7e089003c247dee82edac3", kill_on_drop: false }`
[INFO] [stdout] 9fb81f7fa75d48d6513387c2c73cc3de342802a6bb7e089003c247dee82edac3
[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] [stdout] 842287f410dbd787d89ae783c755e32a60acc3737aa135a076739f91de37cbaf
[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" "842287f410dbd787d89ae783c755e32a60acc3737aa135a076739f91de37cbaf", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/bare_io-8e43e99862fe358a
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/tests-67dd40c4580054aa
[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] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test read_exact ... ok
[INFO] [stdout] test chain_bufread ... ok
[INFO] [stdout] test read_exact_slice ... ok
[INFO] [stdout] test take_eof ... ok
[INFO] [stdout] test test_writer_read_from_one_buf ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests bare-io
[INFO] [stdout] 
[INFO] [stdout] running 39 tests
[INFO] [stdout] test src/traits.rs - traits::BufRead::fill_buf (line 865) ... ok
[INFO] [stdout] test src/traits.rs - traits::BufRead (line 805) ... ok
[INFO] [stdout] test src/cursor.rs - cursor::Cursor (line 25) ... ok
[INFO] [stdout] test src/traits.rs - traits::BufRead (line 825) ... ok
[INFO] [stdout] test src/traits.rs - traits::Chain<T, U>::get_ref (line 944) ... ok
[INFO] [stdout] test src/traits.rs - traits::Chain<T, U>::get_mut (line 970) ... ok
[INFO] [stdout] test src/traits.rs - traits::Chain<T, U>::into_inner (line 922) ... ok
[INFO] [stdout] test src/traits.rs - traits::Read (line 26) ... ok
[INFO] [stdout] test src/error.rs - error::Error::from (line 187) ... ok
[INFO] [stdout] test src/traits.rs - traits::Read::by_ref (line 252) ... ok
[INFO] [stdout] test src/traits.rs - traits::Read (line 53) ... ok
[INFO] [stdout] test src/error.rs - error::Result (line 26) ... ok
[INFO] [stdout] test src/cursor.rs - cursor::Cursor<T>::get_mut (line 133) ... ok
[INFO] [stdout] test src/traits.rs - traits::Read::bytes (line 297) ... ok
[INFO] [stdout] test src/traits.rs - traits::Read::read (line 127) ... ok
[INFO] [stdout] test src/cursor.rs - cursor::Cursor<T>::get_ref (line 113) ... ok
[INFO] [stdout] test src/traits.rs - traits::Read::chain (line 330) ... ok
[INFO] [stdout] test src/cursor.rs - cursor::Cursor<T>::position (line 150) ... ok
[INFO] [stdout] test src/traits.rs - traits::Read::take (line 374) ... ok
[INFO] [stdout] test src/cursor.rs - cursor::Cursor<T>::new (line 81) ... ok
[INFO] [stdout] test src/traits.rs - traits::Read::read_exact (line 205) ... ok
[INFO] [stdout] test src/cursor.rs - cursor::Cursor<T>::into_inner (line 96) ... ok
[INFO] [stdout] test src/traits.rs - traits::Seek (line 714) ... ok
[INFO] [stdout] test src/cursor.rs - cursor::Cursor<T>::set_position (line 173) ... ok
[INFO] [stdout] test src/traits.rs - traits::Take<T>::get_mut (line 1166) ... ok
[INFO] [stdout] test src/traits.rs - traits::Write::by_ref (line 680) ... ok
[INFO] [stdout] test src/traits.rs - traits::Take<T>::into_inner (line 1114) ... ok
[INFO] [stdout] test src/traits.rs - traits::Take<T>::limit (line 1064) ... ok
[INFO] [stdout] test src/error.rs - error::Error::into_inner (line 274) ... ok
[INFO] [stdout] test src/traits.rs - traits::Take<T>::get_ref (line 1138) ... ok
[INFO] [stdout] test src/traits.rs - traits::Write (line 460) ... ok
[INFO] [stdout] test src/error.rs - error::Error::new (line 212) ... ok
[INFO] [stdout] test src/traits.rs - traits::Write::write_fmt (line 622) ... ok
[INFO] [stdout] test src/traits.rs - traits::Take<T>::set_limit (line 1090) ... ok
[INFO] [stdout] test src/traits.rs - traits::Write::write (line 513) ... ok
[INFO] [stdout] test src/error.rs - error::Error::get_ref (line 240) ... ok
[INFO] [stdout] test src/traits.rs - traits::Write::write_all (line 574) ... ok
[INFO] [stdout] test src/traits.rs - traits::Write::flush (line 539) ... ok
[INFO] [stdout] test src/error.rs - error::Error::kind (line 303) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 39 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "842287f410dbd787d89ae783c755e32a60acc3737aa135a076739f91de37cbaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "842287f410dbd787d89ae783c755e32a60acc3737aa135a076739f91de37cbaf", kill_on_drop: false }`
[INFO] [stdout] 842287f410dbd787d89ae783c755e32a60acc3737aa135a076739f91de37cbaf