[INFO] fetching crate yarns 0.4.1...
[INFO] testing yarns-0.4.1 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate yarns 0.4.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate yarns 0.4.1 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yarns 0.4.1
[INFO] finished tweaking crates.io crate yarns 0.4.1
[INFO] tweaked toml for crates.io crate yarns 0.4.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d1e22edc8f01daf2a0dc8e2cb6ff279bf41854ba653d9d86a64e6c1f933a24b4
[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" "d1e22edc8f01daf2a0dc8e2cb6ff279bf41854ba653d9d86a64e6c1f933a24b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1e22edc8f01daf2a0dc8e2cb6ff279bf41854ba653d9d86a64e6c1f933a24b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1e22edc8f01daf2a0dc8e2cb6ff279bf41854ba653d9d86a64e6c1f933a24b4", kill_on_drop: false }`
[INFO] [stdout] d1e22edc8f01daf2a0dc8e2cb6ff279bf41854ba653d9d86a64e6c1f933a24b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2021-01-01" "build" "--frozen" "--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] 15caa33cfc80c3d4d5336a21e8b05a7bab19bfb687c2d7d58678ed21692b73d7
[INFO] running `Command { std: "docker" "start" "-a" "15caa33cfc80c3d4d5336a21e8b05a7bab19bfb687c2d7d58678ed21692b73d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling yarns v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "15caa33cfc80c3d4d5336a21e8b05a7bab19bfb687c2d7d58678ed21692b73d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15caa33cfc80c3d4d5336a21e8b05a7bab19bfb687c2d7d58678ed21692b73d7", kill_on_drop: false }`
[INFO] [stdout] 15caa33cfc80c3d4d5336a21e8b05a7bab19bfb687c2d7d58678ed21692b73d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9bb16e4658779d657f6e38f1def91681fee1b8ed4c9ee244db57b725ad852b9
[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" "c9bb16e4658779d657f6e38f1def91681fee1b8ed4c9ee244db57b725ad852b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling yarns v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `Command { std: "docker" "inspect" "c9bb16e4658779d657f6e38f1def91681fee1b8ed4c9ee244db57b725ad852b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9bb16e4658779d657f6e38f1def91681fee1b8ed4c9ee244db57b725ad852b9", kill_on_drop: false }`
[INFO] [stdout] c9bb16e4658779d657f6e38f1def91681fee1b8ed4c9ee244db57b725ad852b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a61357849d71587e57e3393fc3caed97ee0b7500dfa660c1c11f459c8d36e8ff
[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" "a61357849d71587e57e3393fc3caed97ee0b7500dfa660c1c11f459c8d36e8ff", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/yarns-78c023712cb00396
[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] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test main::concat_hello_goodbye ... ok
[INFO] [stdout] test main::contains_hello_hell ... ok
[INFO] [stdout] test main::head_hello_h ... ok
[INFO] [stdout] test main::substr_hello_1_3 ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/lib-c10947861f0f550f
[INFO] [stdout] test main::len_hello ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests yarns
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - substr (line 17) ... ok
[INFO] [stdout] test src/lib.rs - contains (line 43) ... ok
[INFO] [stdout] test src/lib.rs - len (line 63) ... ok
[INFO] [stdout] test src/lib.rs - concat (line 30) ... ok
[INFO] [stdout] test src/lib.rs - head (line 5) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.10s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a61357849d71587e57e3393fc3caed97ee0b7500dfa660c1c11f459c8d36e8ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a61357849d71587e57e3393fc3caed97ee0b7500dfa660c1c11f459c8d36e8ff", kill_on_drop: false }`
[INFO] [stdout] a61357849d71587e57e3393fc3caed97ee0b7500dfa660c1c11f459c8d36e8ff