[INFO] fetching crate workpool 0.2.1...
[INFO] testing workpool-0.2.1 against 1.77.0 for beta-1.78-1
[INFO] extracting crate workpool 0.2.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate workpool 0.2.1 on toolchain 1.77.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.77.0" "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-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.77.0" "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" "+1.77.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded published_value v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c0f60c5c040f81d8af8c4228fbf6be255ce32a95a5e3427e10d4f86de2820d43
[INFO] running `Command { std: "docker" "start" "-a" "c0f60c5c040f81d8af8c4228fbf6be255ce32a95a5e3427e10d4f86de2820d43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0f60c5c040f81d8af8c4228fbf6be255ce32a95a5e3427e10d4f86de2820d43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0f60c5c040f81d8af8c4228fbf6be255ce32a95a5e3427e10d4f86de2820d43", kill_on_drop: false }`
[INFO] [stdout] c0f60c5c040f81d8af8c4228fbf6be255ce32a95a5e3427e10d4f86de2820d43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2367ebb99cc49f290e0da1348accd25200f897c7fa27bb6a92024eb0070b73eb
[INFO] running `Command { std: "docker" "start" "-a" "2367ebb99cc49f290e0da1348accd25200f897c7fa27bb6a92024eb0070b73eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling published_value v0.1.2
[INFO] [stderr]    Compiling crossbeam-channel v0.5.12
[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 0.79s
[INFO] running `Command { std: "docker" "inspect" "2367ebb99cc49f290e0da1348accd25200f897c7fa27bb6a92024eb0070b73eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2367ebb99cc49f290e0da1348accd25200f897c7fa27bb6a92024eb0070b73eb", kill_on_drop: false }`
[INFO] [stdout] 2367ebb99cc49f290e0da1348accd25200f897c7fa27bb6a92024eb0070b73eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 089bd636cd1648fd5b5d7c112e9f7f4d51e4697326f79a91e79a4707a64f5c2c
[INFO] running `Command { std: "docker" "start" "-a" "089bd636cd1648fd5b5d7c112e9f7f4d51e4697326f79a91e79a4707a64f5c2c", 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] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[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 test [unoptimized + debuginfo] target(s) in 1.78s
[INFO] running `Command { std: "docker" "inspect" "089bd636cd1648fd5b5d7c112e9f7f4d51e4697326f79a91e79a4707a64f5c2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "089bd636cd1648fd5b5d7c112e9f7f4d51e4697326f79a91e79a4707a64f5c2c", kill_on_drop: false }`
[INFO] [stdout] 089bd636cd1648fd5b5d7c112e9f7f4d51e4697326f79a91e79a4707a64f5c2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2a7e8672b773675047d28f703f0f8591378cf36aaf643880525353d729a615ae
[INFO] running `Command { std: "docker" "start" "-a" "2a7e8672b773675047d28f703f0f8591378cf36aaf643880525353d729a615ae", 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 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/workpool-b95f6056ab575099)
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test reducer::tests::collect_hashmap ... ok
[INFO] [stdout] test pool::static_pool::tests::basic ... ok
[INFO] [stdout] test reducer::tests::collect_vec ... ok
[INFO] [stdout] test reducer::tests::dropped_without_output ... ok
[INFO] [stdout] test pool::dynamic_pool::tests::wait_handle ... ok
[INFO] [stdout] test reducer::tests::collect_results_err ... ok
[INFO] [stdout] test pool::dynamic_pool::tests::basic ... 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::dynamic_pool::tests::forget_to_wait_on_wait_handle ... ok
[INFO] [stdout] test pool::static_pool::tests::collect_into_vec ... ok
[INFO] [stdout] test pool::dynamic_pool::tests::forget_to_wait ... ok
[INFO] [stdout] test pool::static_pool::tests::wait_handle ... ok
[INFO] [stdout] test reducer::tests::collect_results_ok ... ok
[INFO] [stdout] test pool::dynamic_pool::tests::collect_into_vec ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- pool::dynamic_pool::tests::collect_into_vec stdout ----
[INFO] [stdout] thread 'pool::dynamic_pool::tests::collect_into_vec' panicked at src/pool/dynamic_pool.rs:514:9:
[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:     0x55aa25cb9096 - std::backtrace_rs::backtrace::libunwind::trace::h92ba5ac126ecc5ad
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x55aa25cb9096 - std::backtrace_rs::backtrace::trace_unsynchronized::hfaa118b6e3a8f31a
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55aa25cb9096 - std::sys_common::backtrace::_print_fmt::h2075f185adf13bbd
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x55aa25cb9096 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h9c4bd387f9f3f544
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55aa25ce2180 - core::fmt::rt::Argument::fmt::h018ecebdf268b5bb
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x55aa25ce2180 - core::fmt::write::h938c332fdab924eb
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x55aa25cb695f - std::io::Write::write_fmt::hf5d6d29a094a9ad9
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/io/mod.rs:1846:15
[INFO] [stdout]    7:     0x55aa25cb8e74 - std::sys_common::backtrace::_print::h3595c0f4303f3ccd
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55aa25cb8e74 - std::sys_common::backtrace::print::ha888e6736b0bc71f
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55aa25cbabe7 - std::panicking::default_hook::{{closure}}::he19a7f79f7beab5e
[INFO] [stdout]   10:     0x55aa25cba8cd - std::panicking::default_hook::h67efe04e9a5d446e
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x55aa25c7bef7 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::ha485cc981b933d53
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   12:     0x55aa25c7bef7 - test::test_main::{{closure}}::h970c4d535211cea5
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x55aa25cbb206 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h9c9759b104a0af15
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   14:     0x55aa25cbb206 - std::panicking::rust_panic_with_hook::h49021cdbc4b22349
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:785:13
[INFO] [stdout]   15:     0x55aa25cbaf52 - std::panicking::begin_panic_handler::{{closure}}::hfbf601f3d8c62d13
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:659:13
[INFO] [stdout]   16:     0x55aa25cb9596 - std::sys_common::backtrace::__rust_end_short_backtrace::h98dd020b6e913806
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x55aa25cbaca4 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:647:5
[INFO] [stdout]   18:     0x55aa25b957f5 - core::panicking::panic_fmt::h0d3f1893e38be419
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x55aa25b95c2b - core::panicking::assert_failed_inner::he66e930fc360d575
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/panicking.rs:342:17
[INFO] [stdout]   20:     0x55aa25c2954e - core::panicking::assert_failed::hb881ee87e491e82e
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/panicking.rs:297:5
[INFO] [stdout]   21:     0x55aa25c47992 - workpool::pool::dynamic_pool::tests::collect_into_vec::h596f736e3a607093
[INFO] [stdout]                                at /opt/rustwide/workdir/src/pool/dynamic_pool.rs:514:9
[INFO] [stdout]   22:     0x55aa25c47717 - workpool::pool::dynamic_pool::tests::collect_into_vec::{{closure}}::habfd01e716d8abeb
[INFO] [stdout]                                at /opt/rustwide/workdir/src/pool/dynamic_pool.rs:505:26
[INFO] [stdout]   23:     0x55aa25c15a46 - core::ops::function::FnOnce::call_once::hc9f19ee056acfc1e
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x55aa25c81aef - core::ops::function::FnOnce::call_once::hc4365f2905c13fb3
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x55aa25c81aef - test::__rust_begin_short_backtrace::h23efa09c82420171
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:621:18
[INFO] [stdout]   26:     0x55aa25c80911 - test::run_test_in_process::{{closure}}::hf1473bb1a6c04edb
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:644:60
[INFO] [stdout]   27:     0x55aa25c80911 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hff07c3f39ec1a940
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x55aa25c80911 - std::panicking::try::do_call::h344a2a0d830f8cdb
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:554:40
[INFO] [stdout]   29:     0x55aa25c80911 - std::panicking::try::h307dc78c49c41dfc
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:518:19
[INFO] [stdout]   30:     0x55aa25c80911 - std::panic::catch_unwind::h09ff4c41f37beb25
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panic.rs:142:14
[INFO] [stdout]   31:     0x55aa25c80911 - test::run_test_in_process::h25a8f909b68e3831
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:644:27
[INFO] [stdout]   32:     0x55aa25c80911 - test::run_test::{{closure}}::h9934b77d061da8ff
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:567:43
[INFO] [stdout]   33:     0x55aa25c47cf6 - test::run_test::{{closure}}::hc3fe15393b08198a
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:595:41
[INFO] [stdout]   34:     0x55aa25c47cf6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h2751c43450246c92
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   35:     0x55aa25c4cd37 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h1c68a4efdf3a14d2
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   36:     0x55aa25c4cd37 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4aa23e023cec824
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x55aa25c4cd37 - std::panicking::try::do_call::hb75ff41794a19e9d
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:554:40
[INFO] [stdout]   38:     0x55aa25c4cd37 - std::panicking::try::ha7903bccf307108c
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:518:19
[INFO] [stdout]   39:     0x55aa25c4cd37 - std::panic::catch_unwind::h85a1dff12b1bcadc
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panic.rs:142:14
[INFO] [stdout]   40:     0x55aa25c4cd37 - std::thread::Builder::spawn_unchecked_::{{closure}}::h2c9f92cbe6cfd7e3
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   41:     0x55aa25c4cd37 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h7d4afe73c576828a
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x55aa25cbf5a5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h4f08d401a486e446
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   43:     0x55aa25cbf5a5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3476dfcdba628abc
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   44:     0x55aa25cbf5a5 - std::sys::pal::unix::thread::Thread::new::thread_start::h2770ac7f8882db09
[INFO] [stdout]                                at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys/pal/unix/thread.rs:108:17
[INFO] [stdout]   45:     0x7facd32eaac3 - <unknown>
[INFO] [stdout]   46:     0x7facd337bbf4 - __clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     pool::dynamic_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 0.13s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "2a7e8672b773675047d28f703f0f8591378cf36aaf643880525353d729a615ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a7e8672b773675047d28f703f0f8591378cf36aaf643880525353d729a615ae", kill_on_drop: false }`
[INFO] [stdout] 2a7e8672b773675047d28f703f0f8591378cf36aaf643880525353d729a615ae