[INFO] fetching crate ripb 0.3.1...
[INFO] testing ripb-0.3.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate ripb 0.3.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate ripb 0.3.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb7cb31820b913f36b1f9e6cca2a39192c78e7e55cc1d098a59da0cf3ee75d3d
[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" "fb7cb31820b913f36b1f9e6cca2a39192c78e7e55cc1d098a59da0cf3ee75d3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb7cb31820b913f36b1f9e6cca2a39192c78e7e55cc1d098a59da0cf3ee75d3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb7cb31820b913f36b1f9e6cca2a39192c78e7e55cc1d098a59da0cf3ee75d3d", kill_on_drop: false }`
[INFO] [stdout] fb7cb31820b913f36b1f9e6cca2a39192c78e7e55cc1d098a59da0cf3ee75d3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 895f7fddf3dd4cbecf010edd4e9593b4c718e8baacdf92200eec4170b7638e6e
[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" "895f7fddf3dd4cbecf010edd4e9593b4c718e8baacdf92200eec4170b7638e6e", kill_on_drop: false }`
[INFO] [stderr]    Compiling ripb v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:123:31
[INFO] [stdout]     |
[INFO] [stdout] 123 |                 let message = Any::downcast_ref::<T>(&**payload)
[INFO] [stdout]     |                               ^^^ help: use `dyn`: `<dyn Any>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.45s
[INFO] running `Command { std: "docker" "inspect" "895f7fddf3dd4cbecf010edd4e9593b4c718e8baacdf92200eec4170b7638e6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "895f7fddf3dd4cbecf010edd4e9593b4c718e8baacdf92200eec4170b7638e6e", kill_on_drop: false }`
[INFO] [stdout] 895f7fddf3dd4cbecf010edd4e9593b4c718e8baacdf92200eec4170b7638e6e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16377e973435ab63f12784b5c35e1cc4be8784216acd4443e7e68f0e9fc2e615
[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" "16377e973435ab63f12784b5c35e1cc4be8784216acd4443e7e68f0e9fc2e615", kill_on_drop: false }`
[INFO] [stderr]    Compiling ripb v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:123:31
[INFO] [stdout]     |
[INFO] [stdout] 123 |                 let message = Any::downcast_ref::<T>(&**payload)
[INFO] [stdout]     |                               ^^^ help: use `dyn`: `<dyn Any>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:123:31
[INFO] [stdout]     |
[INFO] [stdout] 123 |                 let message = Any::downcast_ref::<T>(&**payload)
[INFO] [stdout]     |                               ^^^ help: use `dyn`: `<dyn Any>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.84s
[INFO] running `Command { std: "docker" "inspect" "16377e973435ab63f12784b5c35e1cc4be8784216acd4443e7e68f0e9fc2e615", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16377e973435ab63f12784b5c35e1cc4be8784216acd4443e7e68f0e9fc2e615", kill_on_drop: false }`
[INFO] [stdout] 16377e973435ab63f12784b5c35e1cc4be8784216acd4443e7e68f0e9fc2e615
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "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] 2181f59beb303e1909a2aef415f8babfcda3d2b5e7c10b4ceee7169044e84c7a
[INFO] running `Command { std: "docker" "start" "-a" "2181f59beb303e1909a2aef415f8babfcda3d2b5e7c10b4ceee7169044e84c7a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout] running 12 tests
[INFO] [stderr]    --> src/lib.rs:123:31
[INFO] [stdout] test tests::no_busyloop ... ignored
[INFO] [stderr]     |
[INFO] [stderr] 123 |                 let message = Any::downcast_ref::<T>(&**payload)
[INFO] [stderr]     |                               ^^^ help: use `dyn`: `<dyn Any>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: `ripb` (lib) generated 1 warning
[INFO] [stderr] warning: `ripb` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.63s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ripb-831f6979ad8917ca)
[INFO] [stdout] test tests::can_send_simple_messages_to_a_subscriber_from_cloned_instance ... ok
[INFO] [stdout] test tests::can_send_simple_messages_to_a_subscriber_from_multiple_threads ... ok
[INFO] [stdout] test tests::can_register_multiple_message_handlers_for_the_same_message_on_a_single_receiver ... ok
[INFO] [stdout] test tests::can_send_a_complex_message_to_a_subscriber ... ok
[INFO] [stdout] test tests::dropping_subscribers_drops_the_corresponding_subscription ... ok
[INFO] [stdout] test tests::cannot_receive_messages_in_a_dropped_subscriber ... ok
[INFO] [stdout] test tests::subscriber_on_a_dropped_bus_should_generate_dead_bus_error_on_subscribe ... ok
[INFO] [stdout] test tests::can_send_a_simple_message_to_2_subscribers ... ok
[INFO] [stdout] test tests::can_drop_the_bus_while_it_is_still_working ... ok
[INFO] [stdout] test tests::can_unsubscribe_callbacks ... ok
[INFO] [stderr]    Doc-tests ripb
[INFO] [stdout] test tests::can_send_a_simple_message_to_a_subscriber ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.29s
[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" "2181f59beb303e1909a2aef415f8babfcda3d2b5e7c10b4ceee7169044e84c7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2181f59beb303e1909a2aef415f8babfcda3d2b5e7c10b4ceee7169044e84c7a", kill_on_drop: false }`
[INFO] [stdout] 2181f59beb303e1909a2aef415f8babfcda3d2b5e7c10b4ceee7169044e84c7a