[INFO] fetching crate tf_playlist 0.1.4...
[INFO] testing tf_playlist-0.1.4 against try#0abe69e6c16114311cc2700e972492e64d69c28f for pr-154065-1
[INFO] extracting crate tf_playlist 0.1.4 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate tf_playlist 0.1.4
[INFO] finished tweaking crates.io crate tf_playlist 0.1.4
[INFO] tweaked toml for crates.io crate tf_playlist 0.1.4 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tf_playlist 0.1.4 on toolchain 0abe69e6c16114311cc2700e972492e64d69c28f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 2 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 82a7dea929b8fe3a8b74a0abaae2c5485003b394b48caf44131c802cb223927b
[INFO] running `Command { std: "docker" "start" "-a" "82a7dea929b8fe3a8b74a0abaae2c5485003b394b48caf44131c802cb223927b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82a7dea929b8fe3a8b74a0abaae2c5485003b394b48caf44131c802cb223927b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82a7dea929b8fe3a8b74a0abaae2c5485003b394b48caf44131c802cb223927b", kill_on_drop: false }`
[INFO] [stdout] 82a7dea929b8fe3a8b74a0abaae2c5485003b394b48caf44131c802cb223927b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e97d1b42c483c35b4da98877607d78eeace792477a162d19e5a538cb24777b30
[INFO] running `Command { std: "docker" "start" "-a" "e97d1b42c483c35b4da98877607d78eeace792477a162d19e5a538cb24777b30", kill_on_drop: false }`
[INFO] [stderr]    Compiling tf_observer v0.1.3
[INFO] [stderr]    Compiling tf_playlist v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/playlist.rs:90:45
[INFO] [stdout]    |
[INFO] [stdout] 90 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout]    |                                             ^                                               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 90 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout] 90 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static>>>,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/playlist.rs:97:45
[INFO] [stdout]    |
[INFO] [stdout] 97 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout]    |                                             ^                                               ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 97 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout] 97 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static>>>,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/playlist_manager.rs:54:45
[INFO] [stdout]    |
[INFO] [stdout] 54 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout]    |                                             ^                                               ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 54 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout] 54 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static >>>,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/playlist_manager.rs:70:45
[INFO] [stdout]    |
[INFO] [stdout] 70 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout]    |                                             ^                                               ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 70 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout] 70 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static >>>,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/playlist_manager.rs:106:45
[INFO] [stdout]     |
[INFO] [stdout] 106 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout]     |                                             ^                                               ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 106 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout] 106 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static >>>,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/playlist_manager.rs:114:45
[INFO] [stdout]     |
[INFO] [stdout] 114 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout]     |                                             ^                                               ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 114 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout] 114 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static >>>,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "e97d1b42c483c35b4da98877607d78eeace792477a162d19e5a538cb24777b30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e97d1b42c483c35b4da98877607d78eeace792477a162d19e5a538cb24777b30", kill_on_drop: false }`
[INFO] [stdout] e97d1b42c483c35b4da98877607d78eeace792477a162d19e5a538cb24777b30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7920e975c2ff1a17a26db762bb59ebd8afdf236d9a6e61a4377b7aaa7a1c5b3d
[INFO] running `Command { std: "docker" "start" "-a" "7920e975c2ff1a17a26db762bb59ebd8afdf236d9a6e61a4377b7aaa7a1c5b3d", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/playlist.rs:90:45
[INFO] [stdout]    |
[INFO] [stdout] 90 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout]    |                                             ^                                               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 90 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout] 90 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static>>>,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/playlist.rs:97:45
[INFO] [stdout]    |
[INFO] [stdout] 97 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout]    |                                             ^                                               ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 97 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout] 97 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static>>>,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/playlist_manager.rs:54:45
[INFO] [stdout]    |
[INFO] [stdout] 54 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout]    |                                             ^                                               ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 54 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout] 54 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static >>>,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/playlist_manager.rs:70:45
[INFO] [stdout]    |
[INFO] [stdout] 70 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout]    |                                             ^                                               ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 70 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout] 70 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static >>>,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/playlist_manager.rs:106:45
[INFO] [stdout]     |
[INFO] [stdout] 106 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout]     |                                             ^                                               ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 106 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout] 106 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static >>>,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/playlist_manager.rs:114:45
[INFO] [stdout]     |
[INFO] [stdout] 114 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout]     |                                             ^                                               ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 114 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout] 114 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static >>>,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tf_playlist v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/playlist.rs:90:45
[INFO] [stdout]    |
[INFO] [stdout] 90 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout]    |                                             ^                                               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 90 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout] 90 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static>>>,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/playlist.rs:97:45
[INFO] [stdout]    |
[INFO] [stdout] 97 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout]    |                                             ^                                               ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 97 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout] 97 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static>>>,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/playlist_manager.rs:54:45
[INFO] [stdout]    |
[INFO] [stdout] 54 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout]    |                                             ^                                               ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 54 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout] 54 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static >>>,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/playlist_manager.rs:70:45
[INFO] [stdout]    |
[INFO] [stdout] 70 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout]    |                                             ^                                               ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 70 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout] 70 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static >>>,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/playlist_manager.rs:106:45
[INFO] [stdout]     |
[INFO] [stdout] 106 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout]     |                                             ^                                               ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 106 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout] 106 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static >>>,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/playlist_manager.rs:114:45
[INFO] [stdout]     |
[INFO] [stdout] 114 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout]     |                                             ^                                               ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 114 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout] 114 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static >>>,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `Command { std: "docker" "inspect" "7920e975c2ff1a17a26db762bb59ebd8afdf236d9a6e61a4377b7aaa7a1c5b3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7920e975c2ff1a17a26db762bb59ebd8afdf236d9a6e61a4377b7aaa7a1c5b3d", kill_on_drop: false }`
[INFO] [stdout] 7920e975c2ff1a17a26db762bb59ebd8afdf236d9a6e61a4377b7aaa7a1c5b3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a8f6c2788d2137506ece847ebaef1efdd4c4abc73eaa63edf7d38b0d47f71554
[INFO] running `Command { std: "docker" "start" "-a" "a8f6c2788d2137506ece847ebaef1efdd4c4abc73eaa63edf7d38b0d47f71554", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/playlist.rs:90:45
[INFO] [stderr]    |
[INFO] [stderr] 90 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr]    |                                             ^                                               ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 90 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr] 90 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static>>>,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/playlist.rs:97:45
[INFO] [stderr]    |
[INFO] [stderr] 97 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr]    |                                             ^                                               ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 97 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr] 97 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static>>>,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/playlist_manager.rs:54:45
[INFO] [stderr]    |
[INFO] [stderr] 54 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr]    |                                             ^                                               ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 54 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr] 54 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static >>>,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/playlist_manager.rs:70:45
[INFO] [stderr]    |
[INFO] [stderr] 70 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr]    |                                             ^                                               ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 70 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr] 70 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static >>>,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/playlist_manager.rs:106:45
[INFO] [stderr]     |
[INFO] [stderr] 106 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr]     |                                             ^                                               ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 106 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr] 106 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static >>>,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/playlist_manager.rs:114:45
[INFO] [stderr]     |
[INFO] [stderr] 114 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr]     |                                             ^                                               ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 114 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr] 114 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static >>>,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `tf_playlist` (lib) generated 6 warnings (run `cargo fix --lib -p tf_playlist` to apply 6 suggestions)
[INFO] [stderr] warning: `tf_playlist` (lib test) generated 6 warnings (6 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tf_playlist-c2a6e9df55f760c5)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test playlist_manager::test::playlistmanagerinternal_toggle_complex ... ok
[INFO] [stdout] test playlist_manager::test::playlistmanagerinternal_toggle_empty ... ok
[INFO] [stdout] test playlist::test::playlist_toggle ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tf_playlist
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/playlist.rs:90:45
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 90 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stdout] 
[INFO] [stderr]    |                                             ^                                               ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 90 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr] 90 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static>>>,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/playlist.rs:97:45
[INFO] [stderr]    |
[INFO] [stderr] 97 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr]    |                                             ^                                               ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 97 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr] 97 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static>>>,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/playlist_manager.rs:54:45
[INFO] [stderr]    |
[INFO] [stderr] 54 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr]    |                                             ^                                               ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 54 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr] 54 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static >>>,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/playlist_manager.rs:70:45
[INFO] [stderr]    |
[INFO] [stderr] 70 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr]    |                                             ^                                               ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 70 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr] 70 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static >>>,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/playlist_manager.rs:106:45
[INFO] [stderr]     |
[INFO] [stderr] 106 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr]     |                                             ^                                               ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 106 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr] 106 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static >>>,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/playlist_manager.rs:114:45
[INFO] [stderr]     |
[INFO] [stderr] 114 |         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr]     |                                             ^                                               ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 114 -         observer: std::sync::Weak<Mutex<Box<(dyn Observer<PlaylistEvent<T>> + Send + 'static)>>>,
[INFO] [stderr] 114 +         observer: std::sync::Weak<Mutex<Box<dyn Observer<PlaylistEvent<T>> + Send + 'static >>>,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] running `Command { std: "docker" "inspect" "a8f6c2788d2137506ece847ebaef1efdd4c4abc73eaa63edf7d38b0d47f71554", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8f6c2788d2137506ece847ebaef1efdd4c4abc73eaa63edf7d38b0d47f71554", kill_on_drop: false }`
[INFO] [stdout] a8f6c2788d2137506ece847ebaef1efdd4c4abc73eaa63edf7d38b0d47f71554
