[INFO] fetching crate ripb 0.3.1...
[INFO] testing ripb-0.3.1 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate ripb 0.3.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate ripb 0.3.1 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 ripb 0.3.1
[INFO] finished tweaking crates.io crate ripb 0.3.1
[INFO] tweaked toml for crates.io crate ripb 0.3.1 written to /workspace/builds/worker-8/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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 22a1d1ea54b67b8140c05924947f57cfa22d5ce5a670e177c0aae27f51fa3d74
[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" "22a1d1ea54b67b8140c05924947f57cfa22d5ce5a670e177c0aae27f51fa3d74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "22a1d1ea54b67b8140c05924947f57cfa22d5ce5a670e177c0aae27f51fa3d74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22a1d1ea54b67b8140c05924947f57cfa22d5ce5a670e177c0aae27f51fa3d74", kill_on_drop: false }`
[INFO] [stdout] 22a1d1ea54b67b8140c05924947f57cfa22d5ce5a670e177c0aae27f51fa3d74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stdout] 6883cb2e13ccab5214e397702b21090b940706fcbcbc44a116d8519daebdf813
[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" "6883cb2e13ccab5214e397702b21090b940706fcbcbc44a116d8519daebdf813", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling ripb v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.03s
[INFO] running `Command { std: "docker" "inspect" "6883cb2e13ccab5214e397702b21090b940706fcbcbc44a116d8519daebdf813", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6883cb2e13ccab5214e397702b21090b940706fcbcbc44a116d8519daebdf813", kill_on_drop: false }`
[INFO] [stdout] 6883cb2e13ccab5214e397702b21090b940706fcbcbc44a116d8519daebdf813
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 0565d8c2813b4acc3f188f7f98991d14e2cdc6194cf72bf6f625eb83d4e01143
[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" "0565d8c2813b4acc3f188f7f98991d14e2cdc6194cf72bf6f625eb83d4e01143", kill_on_drop: false }`
[INFO] [stderr]    Compiling bencher v0.1.5
[INFO] [stderr]    Compiling ripb v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.80s
[INFO] running `Command { std: "docker" "inspect" "0565d8c2813b4acc3f188f7f98991d14e2cdc6194cf72bf6f625eb83d4e01143", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0565d8c2813b4acc3f188f7f98991d14e2cdc6194cf72bf6f625eb83d4e01143", kill_on_drop: false }`
[INFO] [stdout] 0565d8c2813b4acc3f188f7f98991d14e2cdc6194cf72bf6f625eb83d4e01143
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] e63c425936a1ddddbd1f7b02ffc2d8672fd32d8e4179fe27c36c1a43a89db6f4
[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" "e63c425936a1ddddbd1f7b02ffc2d8672fd32d8e4179fe27c36c1a43a89db6f4", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stdout] running 12 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/ripb-83083c7f18989724
[INFO] [stdout] test tests::no_busyloop ... ignored
[INFO] [stdout] test tests::can_send_simple_messages_to_a_subscriber_from_multiple_threads ... ok
[INFO] [stdout] test tests::can_send_a_simple_message_to_a_subscriber ... ok
[INFO] [stdout] test tests::can_unsubscribe_callbacks ... ok
[INFO] [stdout] test tests::can_send_a_simple_message_to_2_subscribers ... ok
[INFO] [stdout] test tests::can_send_simple_messages_to_a_subscriber_from_cloned_instance ... ok
[INFO] [stdout] test tests::dropping_subscribers_drops_the_corresponding_subscription ... ok
[INFO] [stdout] test tests::subscriber_on_a_dropped_bus_should_generate_dead_bus_error_on_subscribe ... ok
[INFO] [stdout] test tests::can_drop_the_bus_while_it_is_still_working ... ok
[INFO] [stdout] test tests::can_send_a_complex_message_to_a_subscriber ... ok
[INFO] [stderr]    Doc-tests ripb
[INFO] [stdout] test tests::cannot_receive_messages_in_a_dropped_subscriber ... ok
[INFO] [stdout] test tests::can_register_multiple_message_handlers_for_the_same_message_on_a_single_receiver ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 1.33s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e63c425936a1ddddbd1f7b02ffc2d8672fd32d8e4179fe27c36c1a43a89db6f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e63c425936a1ddddbd1f7b02ffc2d8672fd32d8e4179fe27c36c1a43a89db6f4", kill_on_drop: false }`
[INFO] [stdout] e63c425936a1ddddbd1f7b02ffc2d8672fd32d8e4179fe27c36c1a43a89db6f4