[INFO] fetching crate workpool 0.2.1...
[INFO] testing workpool-0.2.1 against beta-2023-10-04 for beta-1.74-1
[INFO] extracting crate workpool 0.2.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate workpool 0.2.1 on toolchain beta-2023-10-04
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-10-04" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate workpool 0.2.1
[INFO] finished tweaking crates.io crate workpool 0.2.1
[INFO] tweaked toml for crates.io crate workpool 0.2.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-10-04" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-10-04" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-10-04" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bd45408b309fb6eaa76db56355240716527aae5f5a4f39e5962706f6595eeb36
[INFO] running `Command { std: "docker" "start" "-a" "bd45408b309fb6eaa76db56355240716527aae5f5a4f39e5962706f6595eeb36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd45408b309fb6eaa76db56355240716527aae5f5a4f39e5962706f6595eeb36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd45408b309fb6eaa76db56355240716527aae5f5a4f39e5962706f6595eeb36", kill_on_drop: false }`
[INFO] [stdout] bd45408b309fb6eaa76db56355240716527aae5f5a4f39e5962706f6595eeb36
[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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-10-04" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4f56f08320611c3e421d77a9d7bf44aaf7ee3a8251e922035966c60b5b5cf31
[INFO] running `Command { std: "docker" "start" "-a" "d4f56f08320611c3e421d77a9d7bf44aaf7ee3a8251e922035966c60b5b5cf31", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling published_value v0.1.2
[INFO] [stderr]    Compiling crossbeam-channel v0.5.8
[INFO] [stderr]    Compiling workpool v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:176:32
[INFO] [stdout]     |
[INFO] [stdout] 176 |     thread_creator: Option<Box<Fn() -> JoinOnDrop<()>>>,
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 176 |     thread_creator: Option<Box<dyn Fn() -> JoinOnDrop<()>>>,
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:205:40
[INFO] [stdout]     |
[INFO] [stdout] 205 |         let thread_creator: Option<Box<Fn() -> JoinOnDrop<()>>> = Some(Box::new(move || {
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 205 |         let thread_creator: Option<Box<dyn Fn() -> JoinOnDrop<()>>> = Some(Box::new(move || {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/pool/dynamic_pool.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         self.change_concurrency_limit_sender.send(concurrency_limit);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let _ = self.change_concurrency_limit_sender.send(concurrency_limit);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/pool/dynamic_pool.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |         self.work_sender.send(input);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 90 |         let _ = self.work_sender.send(input);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:127:9
[INFO] [stdout]     |
[INFO] [stdout] 127 |         self.change_concurrency_limit_sender.send(concurrency_limit);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 127 |         let _ = self.change_concurrency_limit_sender.send(concurrency_limit);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:246:21
[INFO] [stdout]     |
[INFO] [stdout] 246 |                     self.kill_thread_req_sender.send(());
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 246 |                     let _ = self.kill_thread_req_sender.send(());
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:286:21
[INFO] [stdout]     |
[INFO] [stdout] 286 |                     self.kill_thread_req_sender.send(());
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 286 |                     let _ = self.kill_thread_req_sender.send(());
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:319:25
[INFO] [stdout]     |
[INFO] [stdout] 319 |                         self.kill_thread_req_sender.send(());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 319 |                         let _ = self.kill_thread_req_sender.send(());
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:372:13
[INFO] [stdout]     |
[INFO] [stdout] 372 |             kill_ack.send(thread::current().id());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 372 |             let _ = kill_ack.send(thread::current().id());
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:377:17
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 kill_ack.send(thread::current().id());
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let _ = kill_ack.send(thread::current().id());
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:383:21
[INFO] [stdout]     |
[INFO] [stdout] 383 |                     work_sender.send(work_output);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 383 |                     let _ = work_sender.send(work_output);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/pool/static_pool.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |         self.work_sender.send(input);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let _ = self.work_sender.send(input);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/reducer.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |         self.sender.send(input);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let _ = self.sender.send(input);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "d4f56f08320611c3e421d77a9d7bf44aaf7ee3a8251e922035966c60b5b5cf31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4f56f08320611c3e421d77a9d7bf44aaf7ee3a8251e922035966c60b5b5cf31", kill_on_drop: false }`
[INFO] [stdout] d4f56f08320611c3e421d77a9d7bf44aaf7ee3a8251e922035966c60b5b5cf31
[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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-10-04" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a524f5e7217aeb31a93714cedfa0b68a7f4eb96c5176d47b451b0e30c88f5eb6
[INFO] running `Command { std: "docker" "start" "-a" "a524f5e7217aeb31a93714cedfa0b68a7f4eb96c5176d47b451b0e30c88f5eb6", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:176:32
[INFO] [stdout]     |
[INFO] [stdout] 176 |     thread_creator: Option<Box<Fn() -> JoinOnDrop<()>>>,
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 176 |     thread_creator: Option<Box<dyn Fn() -> JoinOnDrop<()>>>,
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:205:40
[INFO] [stdout]     |
[INFO] [stdout] 205 |         let thread_creator: Option<Box<Fn() -> JoinOnDrop<()>>> = Some(Box::new(move || {
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 205 |         let thread_creator: Option<Box<dyn Fn() -> JoinOnDrop<()>>> = Some(Box::new(move || {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/pool/dynamic_pool.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         self.change_concurrency_limit_sender.send(concurrency_limit);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let _ = self.change_concurrency_limit_sender.send(concurrency_limit);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/pool/dynamic_pool.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |         self.work_sender.send(input);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 90 |         let _ = self.work_sender.send(input);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:127:9
[INFO] [stdout]     |
[INFO] [stdout] 127 |         self.change_concurrency_limit_sender.send(concurrency_limit);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 127 |         let _ = self.change_concurrency_limit_sender.send(concurrency_limit);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:246:21
[INFO] [stdout]     |
[INFO] [stdout] 246 |                     self.kill_thread_req_sender.send(());
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 246 |                     let _ = self.kill_thread_req_sender.send(());
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:286:21
[INFO] [stdout]     |
[INFO] [stdout] 286 |                     self.kill_thread_req_sender.send(());
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 286 |                     let _ = self.kill_thread_req_sender.send(());
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:319:25
[INFO] [stdout]     |
[INFO] [stdout] 319 |                         self.kill_thread_req_sender.send(());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 319 |                         let _ = self.kill_thread_req_sender.send(());
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:372:13
[INFO] [stdout]     |
[INFO] [stdout] 372 |             kill_ack.send(thread::current().id());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 372 |             let _ = kill_ack.send(thread::current().id());
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:377:17
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 kill_ack.send(thread::current().id());
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let _ = kill_ack.send(thread::current().id());
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:383:21
[INFO] [stdout]     |
[INFO] [stdout] 383 |                     work_sender.send(work_output);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 383 |                     let _ = work_sender.send(work_output);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/pool/static_pool.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |         self.work_sender.send(input);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let _ = self.work_sender.send(input);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/reducer.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |         self.sender.send(input);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let _ = self.sender.send(input);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling workpool v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:176:32
[INFO] [stdout]     |
[INFO] [stdout] 176 |     thread_creator: Option<Box<Fn() -> JoinOnDrop<()>>>,
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 176 |     thread_creator: Option<Box<dyn Fn() -> JoinOnDrop<()>>>,
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:205:40
[INFO] [stdout]     |
[INFO] [stdout] 205 |         let thread_creator: Option<Box<Fn() -> JoinOnDrop<()>>> = Some(Box::new(move || {
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 205 |         let thread_creator: Option<Box<dyn Fn() -> JoinOnDrop<()>>> = Some(Box::new(move || {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/pool/dynamic_pool.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         self.change_concurrency_limit_sender.send(concurrency_limit);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let _ = self.change_concurrency_limit_sender.send(concurrency_limit);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/pool/dynamic_pool.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |         self.work_sender.send(input);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 90 |         let _ = self.work_sender.send(input);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:127:9
[INFO] [stdout]     |
[INFO] [stdout] 127 |         self.change_concurrency_limit_sender.send(concurrency_limit);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 127 |         let _ = self.change_concurrency_limit_sender.send(concurrency_limit);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:246:21
[INFO] [stdout]     |
[INFO] [stdout] 246 |                     self.kill_thread_req_sender.send(());
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 246 |                     let _ = self.kill_thread_req_sender.send(());
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:286:21
[INFO] [stdout]     |
[INFO] [stdout] 286 |                     self.kill_thread_req_sender.send(());
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 286 |                     let _ = self.kill_thread_req_sender.send(());
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:319:25
[INFO] [stdout]     |
[INFO] [stdout] 319 |                         self.kill_thread_req_sender.send(());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 319 |                         let _ = self.kill_thread_req_sender.send(());
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:372:13
[INFO] [stdout]     |
[INFO] [stdout] 372 |             kill_ack.send(thread::current().id());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 372 |             let _ = kill_ack.send(thread::current().id());
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:377:17
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 kill_ack.send(thread::current().id());
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let _ = kill_ack.send(thread::current().id());
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/pool/dynamic_pool.rs:383:21
[INFO] [stdout]     |
[INFO] [stdout] 383 |                     work_sender.send(work_output);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 383 |                     let _ = work_sender.send(work_output);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/pool/static_pool.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |         self.work_sender.send(input);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let _ = self.work_sender.send(input);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/reducer.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |         self.sender.send(input);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let _ = self.sender.send(input);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `Command { std: "docker" "inspect" "a524f5e7217aeb31a93714cedfa0b68a7f4eb96c5176d47b451b0e30c88f5eb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a524f5e7217aeb31a93714cedfa0b68a7f4eb96c5176d47b451b0e30c88f5eb6", kill_on_drop: false }`
[INFO] [stdout] a524f5e7217aeb31a93714cedfa0b68a7f4eb96c5176d47b451b0e30c88f5eb6
[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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-10-04" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 64e6dcc215360d2e29fe2ed1f57faa80b8b42d5e894add02ca156193bf96fb73
[INFO] running `Command { std: "docker" "start" "-a" "64e6dcc215360d2e29fe2ed1f57faa80b8b42d5e894add02ca156193bf96fb73", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/pool/dynamic_pool.rs:176:32
[INFO] [stderr]     |
[INFO] [stderr] 176 |     thread_creator: Option<Box<Fn() -> JoinOnDrop<()>>>,
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 176 |     thread_creator: Option<Box<dyn Fn() -> JoinOnDrop<()>>>,
[INFO] [stderr]     |                                +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/pool/dynamic_pool.rs:205:40
[INFO] [stderr]     |
[INFO] [stderr] 205 |         let thread_creator: Option<Box<Fn() -> JoinOnDrop<()>>> = Some(Box::new(move || {
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 205 |         let thread_creator: Option<Box<dyn Fn() -> JoinOnDrop<()>>> = Some(Box::new(move || {
[INFO] [stderr]     |                                        +++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/pool/dynamic_pool.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |         self.change_concurrency_limit_sender.send(concurrency_limit);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 60 |         let _ = self.change_concurrency_limit_sender.send(concurrency_limit);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/pool/dynamic_pool.rs:90:9
[INFO] [stderr]    |
[INFO] [stderr] 90 |         self.work_sender.send(input);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 90 |         let _ = self.work_sender.send(input);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/pool/dynamic_pool.rs:127:9
[INFO] [stderr]     |
[INFO] [stderr] 127 |         self.change_concurrency_limit_sender.send(concurrency_limit);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 127 |         let _ = self.change_concurrency_limit_sender.send(concurrency_limit);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/pool/dynamic_pool.rs:246:21
[INFO] [stderr]     |
[INFO] [stderr] 246 |                     self.kill_thread_req_sender.send(());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 246 |                     let _ = self.kill_thread_req_sender.send(());
[INFO] [stderr]     |                     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/pool/dynamic_pool.rs:286:21
[INFO] [stderr]     |
[INFO] [stderr] 286 |                     self.kill_thread_req_sender.send(());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 286 |                     let _ = self.kill_thread_req_sender.send(());
[INFO] [stderr]     |                     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/pool/dynamic_pool.rs:319:25
[INFO] [stderr]     |
[INFO] [stderr] 319 |                         self.kill_thread_req_sender.send(());
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 319 |                         let _ = self.kill_thread_req_sender.send(());
[INFO] [stderr]     |                         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/pool/dynamic_pool.rs:372:13
[INFO] [stderr]     |
[INFO] [stderr] 372 |             kill_ack.send(thread::current().id());
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 372 |             let _ = kill_ack.send(thread::current().id());
[INFO] [stderr]     |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/pool/dynamic_pool.rs:377:17
[INFO] [stderr]     |
[INFO] [stderr] 377 |                 kill_ack.send(thread::current().id());
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 377 |                 let _ = kill_ack.send(thread::current().id());
[INFO] [stderr]     |                 +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/pool/dynamic_pool.rs:383:21
[INFO] [stderr]     |
[INFO] [stderr] 383 |                     work_sender.send(work_output);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 383 |                     let _ = work_sender.send(work_output);
[INFO] [stderr]     |                     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/pool/static_pool.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 |         self.work_sender.send(input);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 91 |         let _ = self.work_sender.send(input);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/reducer.rs:52:9
[INFO] [stderr]    |
[INFO] [stderr] 52 |         self.sender.send(input);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 52 |         let _ = self.sender.send(input);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `workpool` (lib) generated 13 warnings (run `cargo fix --lib -p workpool` to apply 2 suggestions)
[INFO] [stderr] warning: `workpool` (lib test) generated 13 warnings (13 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/workpool-81695a33b41be810)
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test pool::dynamic_pool::tests::forget_to_wait_on_wait_handle ... ok
[INFO] [stdout] test pool::dynamic_pool::tests::forget_to_wait ... ok
[INFO] [stdout] test pool::dynamic_pool::tests::collect_into_vec ... ok
[INFO] [stdout] test reducer::tests::collect_results_err ... ok
[INFO] [stdout] test pool::dynamic_pool::tests::basic ... ok
[INFO] [stdout] test reducer::tests::collect_hashmap ... ok
[INFO] [stdout] test reducer::tests::collect_vec ... ok
[INFO] [stdout] test pool::static_pool::tests::basic ... ok
[INFO] [stdout] test pool::static_pool::tests::wait_handle ... ok
[INFO] [stdout] test reducer::tests::dropped_without_output ... ok
[INFO] [stdout] test reducer::tests::collect_results_ok ... ok
[INFO] [stdout] test pool::dynamic_pool::tests::wait_handle ... ok
[INFO] [stdout] test pool::static_pool::tests::forget_to_wait ... ok
[INFO] [stdout] test pool::static_pool::tests::forget_to_wait_on_wait_handle ... ok
[INFO] [stdout] test pool::static_pool::tests::collect_into_vec ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- pool::static_pool::tests::collect_into_vec stdout ----
[INFO] [stdout] thread 'pool::static_pool::tests::collect_into_vec' panicked at src/pool/static_pool.rs:275:9:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: [200, 1000, 300]
[INFO] [stdout]  right: [200, 300, 1000]
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55d4869f964c - std::backtrace_rs::backtrace::libunwind::trace::h4defc72db73cd441
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stdout]    1:     0x55d4869f964c - std::backtrace_rs::backtrace::trace_unsynchronized::hb1d8a8b488fa82dc
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55d4869f964c - std::sys_common::backtrace::_print_fmt::h3adc87026f68ef7c
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stdout]    3:     0x55d4869f964c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hae0f2018b67c9dd2
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55d486a2323c - core::fmt::rt::Argument::fmt::h0aeca3e83668e143
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/core/src/fmt/rt.rs:138:9
[INFO] [stdout]    5:     0x55d486a2323c - core::fmt::write::h96bf1b6ef709071f
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/core/src/fmt/mod.rs:1114:21
[INFO] [stdout]    6:     0x55d4869f695e - std::io::Write::write_fmt::hcfdabc06f3bbacfb
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/io/mod.rs:1763:15
[INFO] [stdout]    7:     0x55d4869f9434 - std::sys_common::backtrace::_print::hd4ef7cdeb67d2ffe
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55d4869f9434 - std::sys_common::backtrace::print::hf4a0f6d32c50b08e
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55d4869fb1f3 - std::panicking::default_hook::{{closure}}::hf64a6c095f9954ab
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/panicking.rs:272:22
[INFO] [stdout]   10:     0x55d4869fae97 - std::panicking::default_hook::h81f354a056ffc649
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x55d4869ba68c - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h16c22045506fc2d3
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/alloc/src/boxed.rs:2021:9
[INFO] [stdout]   12:     0x55d4869ba68c - test::test_main::{{closure}}::hd8d5b5bb0900d116
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/test/src/lib.rs:136:21
[INFO] [stdout]   13:     0x55d4869fb8f1 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2d4fa3dcc7099287
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/alloc/src/boxed.rs:2021:9
[INFO] [stdout]   14:     0x55d4869fb8f1 - std::panicking::rust_panic_with_hook::h1387a687c5711a74
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/panicking.rs:735:13
[INFO] [stdout]   15:     0x55d4869fb671 - std::panicking::begin_panic_handler::{{closure}}::hf2467c63b8ad7371
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/panicking.rs:609:13
[INFO] [stdout]   16:     0x55d4869f9b76 - std::sys_common::backtrace::__rust_end_short_backtrace::h0b678d0f70fbf3ba
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/sys_common/backtrace.rs:170:18
[INFO] [stdout]   17:     0x55d4869fb3c2 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/panicking.rs:597:5
[INFO] [stdout]   18:     0x55d4868d85e5 - core::panicking::panic_fmt::h8398f9bd40a2efcd
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x55d4868d89fb - core::panicking::assert_failed_inner::h2764bbb56f9308bd
[INFO] [stdout]   20:     0x55d486921d1e - core::panicking::assert_failed::h5ad3ac9136921c2b
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/core/src/panicking.rs:270:5
[INFO] [stdout]   21:     0x55d48697c367 - workpool::pool::static_pool::tests::collect_into_vec::hb210d06ac5516449
[INFO] [stdout]                                at /opt/rustwide/workdir/src/pool/static_pool.rs:275:9
[INFO] [stdout]   22:     0x55d48697c0f7 - workpool::pool::static_pool::tests::collect_into_vec::{{closure}}::hb3af09e00db34bd3
[INFO] [stdout]                                at /opt/rustwide/workdir/src/pool/static_pool.rs:266:27
[INFO] [stdout]   23:     0x55d48693dc46 - core::ops::function::FnOnce::call_once::h588c3ecefe5c1450
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x55d4869bf71f - core::ops::function::FnOnce::call_once::h643f2128867058a3
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x55d4869bf71f - test::__rust_begin_short_backtrace::h5ffb0cd5eda0704e
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/test/src/lib.rs:626:18
[INFO] [stdout]   26:     0x55d4869be7ae - test::run_test_in_process::{{closure}}::h5f3f2c50e89f10f6
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/test/src/lib.rs:649:60
[INFO] [stdout]   27:     0x55d4869be7ae - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hc7bb05d011c94549
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   28:     0x55d4869be7ae - std::panicking::try::do_call::hc2952fe5005bc351
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/panicking.rs:504:40
[INFO] [stdout]   29:     0x55d4869be7ae - std::panicking::try::hac512ea76b947046
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/panicking.rs:468:19
[INFO] [stdout]   30:     0x55d4869be7ae - std::panic::catch_unwind::h11d3922f3ba31e4b
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/panic.rs:142:14
[INFO] [stdout]   31:     0x55d4869be7ae - test::run_test_in_process::h25ad0551c6887d56
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/test/src/lib.rs:649:27
[INFO] [stdout]   32:     0x55d4869be7ae - test::run_test::{{closure}}::h52dd364f39118330
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/test/src/lib.rs:572:43
[INFO] [stdout]   33:     0x55d486987703 - test::run_test::{{closure}}::ha452ffb46088765b
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/test/src/lib.rs:600:41
[INFO] [stdout]   34:     0x55d486987703 - std::sys_common::backtrace::__rust_begin_short_backtrace::he611e39b84a68325
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/sys_common/backtrace.rs:154:18
[INFO] [stdout]   35:     0x55d48698c93b - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h1f6f90a021c1ddc7
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   36:     0x55d48698c93b - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hde337ea7211d438c
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   37:     0x55d48698c93b - std::panicking::try::do_call::hd7199cb78d8df0a5
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/panicking.rs:504:40
[INFO] [stdout]   38:     0x55d48698c93b - std::panicking::try::hed28d716c8fe6b32
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/panicking.rs:468:19
[INFO] [stdout]   39:     0x55d48698c93b - std::panic::catch_unwind::h8ab888e8615782f1
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/panic.rs:142:14
[INFO] [stdout]   40:     0x55d48698c93b - std::thread::Builder::spawn_unchecked_::{{closure}}::h3acf7202ecbb668e
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   41:     0x55d48698c93b - core::ops::function::FnOnce::call_once{{vtable.shim}}::hc15bd9319945b48c
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x55d4869fff05 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h9281b5fb2305c571
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/alloc/src/boxed.rs:2007:9
[INFO] [stdout]   43:     0x55d4869fff05 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hae9cb5d464ed2f06
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/alloc/src/boxed.rs:2007:9
[INFO] [stdout]   44:     0x55d4869fff05 - std::sys::unix::thread::Thread::new::thread_start::he78e4489414f6551
[INFO] [stdout]                                at /rustc/b5c050febf10c9bcc0459d41fe2a1e190ad30b8d/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   45:     0x7fbfae810b43 - <unknown>
[INFO] [stdout]   46:     0x7fbfae8a1bb4 - __clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     pool::static_pool::tests::collect_into_vec
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 14 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "64e6dcc215360d2e29fe2ed1f57faa80b8b42d5e894add02ca156193bf96fb73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64e6dcc215360d2e29fe2ed1f57faa80b8b42d5e894add02ca156193bf96fb73", kill_on_drop: false }`
[INFO] [stdout] 64e6dcc215360d2e29fe2ed1f57faa80b8b42d5e894add02ca156193bf96fb73