[INFO] fetching crate pool_barrier 0.1.1...
[INFO] testing pool_barrier-0.1.1 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate pool_barrier 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate pool_barrier 0.1.1 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 pool_barrier 0.1.1
[INFO] finished tweaking crates.io crate pool_barrier 0.1.1
[INFO] tweaked toml for crates.io crate pool_barrier 0.1.1 written to /workspace/builds/worker-4/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-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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 05de3bd2d7d10fc62c060157aa5a57dcdd4b43261cb8543630245643210994e9
[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" "05de3bd2d7d10fc62c060157aa5a57dcdd4b43261cb8543630245643210994e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05de3bd2d7d10fc62c060157aa5a57dcdd4b43261cb8543630245643210994e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05de3bd2d7d10fc62c060157aa5a57dcdd4b43261cb8543630245643210994e9", kill_on_drop: false }`
[INFO] [stdout] 05de3bd2d7d10fc62c060157aa5a57dcdd4b43261cb8543630245643210994e9
[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" "+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] 53c66382e5b1eccd13d13604270ef7dbb333de0b0d955b0b5f5329e5a4dab65a
[INFO] running `Command { std: "docker" "start" "-a" "53c66382e5b1eccd13d13604270ef7dbb333de0b0d955b0b5f5329e5a4dab65a", kill_on_drop: false }`
[INFO] [stderr]    Compiling pool_barrier v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "53c66382e5b1eccd13d13604270ef7dbb333de0b0d955b0b5f5329e5a4dab65a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53c66382e5b1eccd13d13604270ef7dbb333de0b0d955b0b5f5329e5a4dab65a", kill_on_drop: false }`
[INFO] [stdout] 53c66382e5b1eccd13d13604270ef7dbb333de0b0d955b0b5f5329e5a4dab65a
[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" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9c065db38ff5275972546c58973aa840faa258ab9214e41d89611cf60ad8338
[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" "e9c065db38ff5275972546c58973aa840faa258ab9214e41d89611cf60ad8338", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling pool_barrier v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.35s
[INFO] running `Command { std: "docker" "inspect" "e9c065db38ff5275972546c58973aa840faa258ab9214e41d89611cf60ad8338", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9c065db38ff5275972546c58973aa840faa258ab9214e41d89611cf60ad8338", kill_on_drop: false }`
[INFO] [stdout] e9c065db38ff5275972546c58973aa840faa258ab9214e41d89611cf60ad8338
[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" "+beta-2021-01-01" "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] 217d3f20383e7e9f727b23b24a70d6cac09f69f40aaf105fc4945e8f73faca13
[INFO] running `Command { std: "docker" "start" "-a" "217d3f20383e7e9f727b23b24a70d6cac09f69f40aaf105fc4945e8f73faca13", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/pool_barrier-ca09ce355df44e23
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test tests::same_thread ... ok
[INFO] [stdout] test tests::test_finished_false ... ok
[INFO] [stdout] test tests::test_checkpoint_panic_detection ... ok
[INFO] [stdout] test tests::too_many_checkpoints ... ok
[INFO] [stdout] test tests::test_finished_true ... ok
[INFO] [stdout] test tests::single_use ... ok
[INFO] [stdout] test tests::not_enough_checkpoints ... ok
[INFO] [stderr]    Doc-tests pool_barrier
[INFO] [stdout] test tests::reuse ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.47s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 15) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.59s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "217d3f20383e7e9f727b23b24a70d6cac09f69f40aaf105fc4945e8f73faca13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "217d3f20383e7e9f727b23b24a70d6cac09f69f40aaf105fc4945e8f73faca13", kill_on_drop: false }`
[INFO] [stdout] 217d3f20383e7e9f727b23b24a70d6cac09f69f40aaf105fc4945e8f73faca13