[INFO] fetching crate swansong 0.3.3...
[INFO] testing swansong-0.3.3 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate swansong 0.3.3 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate swansong 0.3.3
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate swansong 0.3.3
[INFO] tweaked toml for crates.io crate swansong 0.3.3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate swansong 0.3.3 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate swansong 0.3.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5c6e00c7a318e83324b147d3d9898eea5712e26fb76ed134a84161b1d12eaf0b
[INFO] running `Command { std: "docker" "start" "-a" "5c6e00c7a318e83324b147d3d9898eea5712e26fb76ed134a84161b1d12eaf0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5c6e00c7a318e83324b147d3d9898eea5712e26fb76ed134a84161b1d12eaf0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c6e00c7a318e83324b147d3d9898eea5712e26fb76ed134a84161b1d12eaf0b", kill_on_drop: false }`
[INFO] [stdout] 5c6e00c7a318e83324b147d3d9898eea5712e26fb76ed134a84161b1d12eaf0b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f340deab091861d690e1ccf0fa3d9ed555bc1515af68b2a27be0446a7213308
[INFO] running `Command { std: "docker" "start" "-a" "9f340deab091861d690e1ccf0fa3d9ed555bc1515af68b2a27be0446a7213308", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling parking v2.2.1
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling event-listener v5.4.1
[INFO] [stderr]    Compiling swansong v0.3.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `Command { std: "docker" "inspect" "9f340deab091861d690e1ccf0fa3d9ed555bc1515af68b2a27be0446a7213308", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f340deab091861d690e1ccf0fa3d9ed555bc1515af68b2a27be0446a7213308", kill_on_drop: false }`
[INFO] [stdout] 9f340deab091861d690e1ccf0fa3d9ed555bc1515af68b2a27be0446a7213308
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ef08d64585014614f35f5feb10a0ef58da131aafa2ec3adff6ce28e33ff80bd
[INFO] running `Command { std: "docker" "start" "-a" "7ef08d64585014614f35f5feb10a0ef58da131aafa2ec3adff6ce28e33ff80bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling fastrand v2.3.0
[INFO] [stderr]    Compiling futures-io v0.3.32
[INFO] [stderr]    Compiling rustix v1.1.4
[INFO] [stderr]    Compiling linux-raw-sys v0.12.1
[INFO] [stderr]    Compiling async-task v4.7.1
[INFO] [stderr]    Compiling async-io v2.6.0
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling anstyle-parse v0.2.7
[INFO] [stderr]    Compiling colorchoice v1.0.4
[INFO] [stderr]    Compiling anstyle v1.0.13
[INFO] [stderr]    Compiling tokio v1.50.0
[INFO] [stderr]    Compiling quote v1.0.44
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling jiff v0.2.21
[INFO] [stderr]    Compiling env_filter v1.0.0
[INFO] [stderr]    Compiling futures-lite v2.6.1
[INFO] [stderr]    Compiling piper v0.2.4
[INFO] [stderr]    Compiling event-listener v5.4.1
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling flume v0.12.0
[INFO] [stderr]    Compiling anstream v0.6.21
[INFO] [stderr]    Compiling event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling swansong v0.3.3 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling async-channel v2.3.1
[INFO] [stderr]    Compiling async-lock v3.4.0
[INFO] [stderr]    Compiling async-executor v1.14.0
[INFO] [stderr]    Compiling blocking v1.6.1
[INFO] [stderr]    Compiling test-harness v0.3.1
[INFO] [stderr]    Compiling tokio-stream v0.1.18
[INFO] [stderr]    Compiling env_logger v0.11.9
[INFO] [stderr]    Compiling polling v3.11.0
[INFO] [stderr]    Compiling async-global-executor v3.1.0
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 18.61s
[INFO] running `Command { std: "docker" "inspect" "7ef08d64585014614f35f5feb10a0ef58da131aafa2ec3adff6ce28e33ff80bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ef08d64585014614f35f5feb10a0ef58da131aafa2ec3adff6ce28e33ff80bd", kill_on_drop: false }`
[INFO] [stdout] 7ef08d64585014614f35f5feb10a0ef58da131aafa2ec3adff6ce28e33ff80bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 973c4f50b503c72168369a2151e8722dc93699a0f5f1bccf63e185d544e2cdcd
[INFO] running `Command { std: "docker" "start" "-a" "973c4f50b503c72168369a2151e8722dc93699a0f5f1bccf63e185d544e2cdcd", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/swansong-89bb9a8ab30044e5)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test.rs (/opt/rustwide/target/debug/deps/test-f9bb550cb7e3f1ef)
[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 21 tests
[INFO] [stdout] test child_guards_delay_parent ... ok
[INFO] [stdout] test child_multi_level ... ok
[INFO] [stdout] test child_created_after_parent_stopped ... ok
[INFO] [stdout] test child_independent_shutdown ... ok
[INFO] [stdout] test child_basic ... ok
[INFO] [stdout] test child_with_interrupt ... ok
[INFO] [stdout] test eq_and_assorted_other_conveniences ... ok
[INFO] [stdout] test future ... ok
[INFO] [stdout] test guarded_test_coverage ... ok
[INFO] [stdout] test child_multiple_children ... ok
[INFO] [stdout] test iterator ... ok
[INFO] [stdout] test iterator_size_hint ... ok
[INFO] [stdout] test iterator_drop ... ok
[INFO] [stdout] test stream ... ok
[INFO] [stdout] test swansong ... ok
[INFO] [stdout] test stream_size_hint ... ok
[INFO] [stdout] test child_multi_threaded ... ok
[INFO] [stdout] test multi_threaded_future_guarded ... ok
[INFO] [stdout] test multi_threaded_stream_guarded ... ok
[INFO] [stdout] test multi_threaded ... ok
[INFO] [stdout] test multi_threaded_blocking ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 21 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.53s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests swansong
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - Swansong::child (line 237) ... ok
[INFO] [stdout] test src/lib.rs - (line 63) ... ok
[INFO] [stdout] test src/lib.rs - (line 47) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.28s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "973c4f50b503c72168369a2151e8722dc93699a0f5f1bccf63e185d544e2cdcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "973c4f50b503c72168369a2151e8722dc93699a0f5f1bccf63e185d544e2cdcd", kill_on_drop: false }`
[INFO] [stdout] 973c4f50b503c72168369a2151e8722dc93699a0f5f1bccf63e185d544e2cdcd