[INFO] fetching crate workpool 0.2.1...
[INFO] testing workpool-0.2.1 against master#d7bd9cd469ff6871420007f091ef52fc32d2ca99 for pr-121417-1
[INFO] extracting crate workpool 0.2.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate workpool 0.2.1 on toolchain d7bd9cd469ff6871420007f091ef52fc32d2ca99
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d7bd9cd469ff6871420007f091ef52fc32d2ca99" "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-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d7bd9cd469ff6871420007f091ef52fc32d2ca99" "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" "+d7bd9cd469ff6871420007f091ef52fc32d2ca99" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded published_value v0.1.2
[INFO] [stderr]   Downloaded crossbeam-channel v0.5.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+d7bd9cd469ff6871420007f091ef52fc32d2ca99" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 742c8428650a4b14c62344aa771fc1ac4530644776865f639ab62834cc587c1f
[INFO] running `Command { std: "docker" "start" "-a" "742c8428650a4b14c62344aa771fc1ac4530644776865f639ab62834cc587c1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "742c8428650a4b14c62344aa771fc1ac4530644776865f639ab62834cc587c1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "742c8428650a4b14c62344aa771fc1ac4530644776865f639ab62834cc587c1f", kill_on_drop: false }`
[INFO] [stdout] 742c8428650a4b14c62344aa771fc1ac4530644776865f639ab62834cc587c1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d7bd9cd469ff6871420007f091ef52fc32d2ca99" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17e3b718a12d4498e6440d6c250dc30fa3c7e874df1042a18661a955353c3093
[INFO] running `Command { std: "docker" "start" "-a" "17e3b718a12d4498e6440d6c250dc30fa3c7e874df1042a18661a955353c3093", 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: the item `published_value` is imported redundantly
[INFO] [stdout]  --> src/pool/dynamic_pool.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use published_value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate published_value;
[INFO] [stdout]   | ----------------------------- the item `published_value` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `published_value` is imported redundantly
[INFO] [stdout]  --> src/pool/static_pool.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use published_value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate published_value;
[INFO] [stdout]   | ----------------------------- the item `published_value` is already imported here
[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: if this is an object-safe trait, 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: if this is an object-safe trait, 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: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.12s
[INFO] running `Command { std: "docker" "inspect" "17e3b718a12d4498e6440d6c250dc30fa3c7e874df1042a18661a955353c3093", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17e3b718a12d4498e6440d6c250dc30fa3c7e874df1042a18661a955353c3093", kill_on_drop: false }`
[INFO] [stdout] 17e3b718a12d4498e6440d6c250dc30fa3c7e874df1042a18661a955353c3093
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d7bd9cd469ff6871420007f091ef52fc32d2ca99" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d2b42d5d81542e67cea10ec2fd13d210314fec79caf64e77d7edd9a568ccbfbc
[INFO] running `Command { std: "docker" "start" "-a" "d2b42d5d81542e67cea10ec2fd13d210314fec79caf64e77d7edd9a568ccbfbc", kill_on_drop: false }`
[INFO] [stderr]    Compiling workpool v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `published_value` is imported redundantly
[INFO] [stdout]  --> src/pool/dynamic_pool.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use published_value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate published_value;
[INFO] [stdout]   | ----------------------------- the item `published_value` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `published_value` is imported redundantly
[INFO] [stdout]  --> src/pool/static_pool.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use published_value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate published_value;
[INFO] [stdout]   | ----------------------------- the item `published_value` is already imported here
[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: if this is an object-safe trait, 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: if this is an object-safe trait, 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: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `published_value` is imported redundantly
[INFO] [stdout]  --> src/pool/dynamic_pool.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use published_value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate published_value;
[INFO] [stdout]   | ----------------------------- the item `published_value` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `published_value` is imported redundantly
[INFO] [stdout]  --> src/pool/static_pool.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use published_value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate published_value;
[INFO] [stdout]   | ----------------------------- the item `published_value` is already imported here
[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: if this is an object-safe trait, 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: if this is an object-safe trait, 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: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.20s
[INFO] running `Command { std: "docker" "inspect" "d2b42d5d81542e67cea10ec2fd13d210314fec79caf64e77d7edd9a568ccbfbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2b42d5d81542e67cea10ec2fd13d210314fec79caf64e77d7edd9a568ccbfbc", kill_on_drop: false }`
[INFO] [stdout] d2b42d5d81542e67cea10ec2fd13d210314fec79caf64e77d7edd9a568ccbfbc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d7bd9cd469ff6871420007f091ef52fc32d2ca99" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e13e4afec34dd5194523815b11fa0167282c5b1c243c6fa0b4c9f9aba734a1a1
[INFO] running `Command { std: "docker" "start" "-a" "e13e4afec34dd5194523815b11fa0167282c5b1c243c6fa0b4c9f9aba734a1a1", kill_on_drop: false }`
[INFO] [stderr] warning: the item `published_value` is imported redundantly
[INFO] [stderr]  --> src/pool/dynamic_pool.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use published_value;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]  ::: src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | extern crate published_value;
[INFO] [stderr]   | ----------------------------- the item `published_value` is already imported here
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `published_value` is imported redundantly
[INFO] [stderr]  --> src/pool/static_pool.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use published_value;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]  ::: src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | extern crate published_value;
[INFO] [stderr]   | ----------------------------- the item `published_value` is already imported here
[INFO] [stderr] 
[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: if this is an object-safe trait, 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: if this is an object-safe trait, 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 15 warnings (run `cargo fix --lib -p workpool` to apply 2 suggestions)
[INFO] [stderr] warning: `workpool` (lib test) generated 15 warnings (15 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/workpool-90c3acafc46b697c)
[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::wait_handle ... ok
[INFO] [stdout] test pool::static_pool::tests::forget_to_wait ... ok
[INFO] [stdout] test reducer::tests::collect_hashmap ... ok
[INFO] [stdout] test pool::static_pool::tests::basic ... ok
[INFO] [stdout] test pool::dynamic_pool::tests::basic ... ok
[INFO] [stdout] test pool::dynamic_pool::tests::collect_into_vec ... ok
[INFO] [stdout] test pool::dynamic_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::wait_handle ... ok
[INFO] [stdout] test pool::static_pool::tests::collect_into_vec ... ok
[INFO] [stdout] test reducer::tests::collect_results_ok ... ok
[INFO] [stdout] test reducer::tests::collect_vec ... ok
[INFO] [stdout] test reducer::tests::collect_results_err ... ok
[INFO] [stdout] test reducer::tests::dropped_without_output ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.17s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests workpool
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e13e4afec34dd5194523815b11fa0167282c5b1c243c6fa0b4c9f9aba734a1a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e13e4afec34dd5194523815b11fa0167282c5b1c243c6fa0b4c9f9aba734a1a1", kill_on_drop: false }`
[INFO] [stdout] e13e4afec34dd5194523815b11fa0167282c5b1c243c6fa0b4c9f9aba734a1a1
[INFO] testing workpool-0.2.1 against try#393ef12c970fbc7f294cd96c35cb76f9591bc1d6 for pr-121417-1
[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 393ef12c970fbc7f294cd96c35cb76f9591bc1d6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+393ef12c970fbc7f294cd96c35cb76f9591bc1d6" "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" "+393ef12c970fbc7f294cd96c35cb76f9591bc1d6" "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" "+393ef12c970fbc7f294cd96c35cb76f9591bc1d6" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+393ef12c970fbc7f294cd96c35cb76f9591bc1d6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 271b041cf830ac7c5db6469945635155adc2f97943bce4115bf56103d92388ee
[INFO] running `Command { std: "docker" "start" "-a" "271b041cf830ac7c5db6469945635155adc2f97943bce4115bf56103d92388ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "271b041cf830ac7c5db6469945635155adc2f97943bce4115bf56103d92388ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "271b041cf830ac7c5db6469945635155adc2f97943bce4115bf56103d92388ee", kill_on_drop: false }`
[INFO] [stdout] 271b041cf830ac7c5db6469945635155adc2f97943bce4115bf56103d92388ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+393ef12c970fbc7f294cd96c35cb76f9591bc1d6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd87c65699ec8631456d0e916d28ab5946ca5ccb3c093b57d208f105e0a158aa
[INFO] running `Command { std: "docker" "start" "-a" "cd87c65699ec8631456d0e916d28ab5946ca5ccb3c093b57d208f105e0a158aa", 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: the item `published_value` is imported redundantly
[INFO] [stdout]  --> src/pool/dynamic_pool.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use published_value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate published_value;
[INFO] [stdout]   | ----------------------------- the item `published_value` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `published_value` is imported redundantly
[INFO] [stdout]  --> src/pool/static_pool.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use published_value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate published_value;
[INFO] [stdout]   | ----------------------------- the item `published_value` is already imported here
[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: if this is an object-safe trait, 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: if this is an object-safe trait, 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: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.03s
[INFO] running `Command { std: "docker" "inspect" "cd87c65699ec8631456d0e916d28ab5946ca5ccb3c093b57d208f105e0a158aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd87c65699ec8631456d0e916d28ab5946ca5ccb3c093b57d208f105e0a158aa", kill_on_drop: false }`
[INFO] [stdout] cd87c65699ec8631456d0e916d28ab5946ca5ccb3c093b57d208f105e0a158aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+393ef12c970fbc7f294cd96c35cb76f9591bc1d6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1fe31dbe52bdde1cb257d727ae5587e57d073f07d6d366c1c89f637d9dfe97ae
[INFO] running `Command { std: "docker" "start" "-a" "1fe31dbe52bdde1cb257d727ae5587e57d073f07d6d366c1c89f637d9dfe97ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling workpool v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `published_value` is imported redundantly
[INFO] [stdout]  --> src/pool/dynamic_pool.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use published_value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate published_value;
[INFO] [stdout]   | ----------------------------- the item `published_value` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `published_value` is imported redundantly
[INFO] [stdout]  --> src/pool/static_pool.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use published_value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate published_value;
[INFO] [stdout]   | ----------------------------- the item `published_value` is already imported here
[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: if this is an object-safe trait, 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: if this is an object-safe trait, 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: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `published_value` is imported redundantly
[INFO] [stdout]  --> src/pool/dynamic_pool.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use published_value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate published_value;
[INFO] [stdout]   | ----------------------------- the item `published_value` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `published_value` is imported redundantly
[INFO] [stdout]  --> src/pool/static_pool.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use published_value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate published_value;
[INFO] [stdout]   | ----------------------------- the item `published_value` is already imported here
[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: if this is an object-safe trait, 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: if this is an object-safe trait, 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: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.89s
[INFO] running `Command { std: "docker" "inspect" "1fe31dbe52bdde1cb257d727ae5587e57d073f07d6d366c1c89f637d9dfe97ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fe31dbe52bdde1cb257d727ae5587e57d073f07d6d366c1c89f637d9dfe97ae", kill_on_drop: false }`
[INFO] [stdout] 1fe31dbe52bdde1cb257d727ae5587e57d073f07d6d366c1c89f637d9dfe97ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+393ef12c970fbc7f294cd96c35cb76f9591bc1d6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 49497b536e711851ae5f0f1727b6671891e752d6bd0751b20e947cbd987fd2f6
[INFO] running `Command { std: "docker" "start" "-a" "49497b536e711851ae5f0f1727b6671891e752d6bd0751b20e947cbd987fd2f6", kill_on_drop: false }`
[INFO] [stderr] warning: the item `published_value` is imported redundantly
[INFO] [stderr]  --> src/pool/dynamic_pool.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use published_value;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]  ::: src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | extern crate published_value;
[INFO] [stderr]   | ----------------------------- the item `published_value` is already imported here
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `published_value` is imported redundantly
[INFO] [stderr]  --> src/pool/static_pool.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use published_value;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]  ::: src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | extern crate published_value;
[INFO] [stderr]   | ----------------------------- the item `published_value` is already imported here
[INFO] [stderr] 
[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: if this is an object-safe trait, 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: if this is an object-safe trait, 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 15 warnings (run `cargo fix --lib -p workpool` to apply 2 suggestions)
[INFO] [stderr] warning: `workpool` (lib test) generated 15 warnings (15 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/workpool-90c3acafc46b697c)
[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::static_pool::tests::forget_to_wait_on_wait_handle ... ok
[INFO] [stdout] test pool::dynamic_pool::tests::wait_handle ... ok
[INFO] [stdout] test reducer::tests::collect_results_err ... ok
[INFO] [stdout] test reducer::tests::collect_results_ok ... ok
[INFO] [stdout] test reducer::tests::collect_vec ... ok
[INFO] [stdout] test reducer::tests::dropped_without_output ... ok
[INFO] [stdout] test pool::static_pool::tests::forget_to_wait ... ok
[INFO] [stdout] test pool::static_pool::tests::wait_handle ... ok
[INFO] [stdout] test pool::static_pool::tests::collect_into_vec ... ok
[INFO] [stdout] test pool::static_pool::tests::basic ... ok
[INFO] [stdout] test pool::dynamic_pool::tests::basic ... ok
[INFO] [stdout] test pool::dynamic_pool::tests::collect_into_vec ... FAILED
[INFO] [stdout] test reducer::tests::collect_hashmap ... ok
[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:     0x559635e4c046 - std::backtrace_rs::backtrace::libunwind::trace::h5c10df0b519d962f
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x559635e4c046 - std::backtrace_rs::backtrace::trace_unsynchronized::h56122ec150da225d
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x559635e4c046 - std::sys_common::backtrace::_print_fmt::h8e5f02953967e039
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x559635e4c046 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h736f584a9f3f7d78
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x559635e73d5c - core::fmt::rt::Argument::fmt::h0eca9e37bebd875b
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x559635e73d5c - core::fmt::write::h57172937379ae112
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x559635e4984f - std::io::Write::write_fmt::h48e0063b56f825c3
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/io/mod.rs:1846:15
[INFO] [stdout]    7:     0x559635e4bdf4 - std::sys_common::backtrace::_print::ha0fb9ef3018dd67f
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x559635e4bdf4 - std::sys_common::backtrace::print::h97bc00c4f471ee58
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x559635e4daeb - std::panicking::default_hook::{{closure}}::had669b8c5eb766ef
[INFO] [stdout]   10:     0x559635e4d7bd - std::panicking::default_hook::hee79edbbfe503541
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x559635e0eef7 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hbce7bcf7a5291663
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/alloc/src/boxed.rs:2030:9
[INFO] [stdout]   12:     0x559635e0eef7 - test::test_main::{{closure}}::hbf7bf4b112234627
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x559635e4e120 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h283d0ebbebe64c72
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/alloc/src/boxed.rs:2030:9
[INFO] [stdout]   14:     0x559635e4e120 - std::panicking::rust_panic_with_hook::ha824647abef1aff2
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:786:13
[INFO] [stdout]   15:     0x559635e4de62 - std::panicking::begin_panic_handler::{{closure}}::h34c7493359eae8d6
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:660:13
[INFO] [stdout]   16:     0x559635e4c526 - std::sys_common::backtrace::__rust_end_short_backtrace::h8f5a11b92972236f
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x559635e4db94 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:648:5
[INFO] [stdout]   18:     0x559635d2e8f5 - core::panicking::panic_fmt::h4f7dd4ba7fa8b3c9
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x559635d2ed2b - core::panicking::assert_failed_inner::hd4677cee4e511fe5
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/panicking.rs:342:17
[INFO] [stdout]   20:     0x559635d9a0fe - core::panicking::assert_failed::h28c32f8d1e340677
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/panicking.rs:297:5
[INFO] [stdout]   21:     0x559635d750a2 - workpool::pool::dynamic_pool::tests::collect_into_vec::h442fa5f1278517a3
[INFO] [stdout]                                at /opt/rustwide/workdir/src/pool/dynamic_pool.rs:514:9
[INFO] [stdout]   22:     0x559635d74e27 - workpool::pool::dynamic_pool::tests::collect_into_vec::{{closure}}::h7d9723610ea6cf19
[INFO] [stdout]                                at /opt/rustwide/workdir/src/pool/dynamic_pool.rs:505:26
[INFO] [stdout]   23:     0x559635d605e6 - core::ops::function::FnOnce::call_once::hbe8e10962c7d1337
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x559635e146ff - core::ops::function::FnOnce::call_once::h263d60e66e97ae21
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x559635e146ff - test::__rust_begin_short_backtrace::hfd27401b46e2c35b
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/test/src/lib.rs:620:18
[INFO] [stdout]   26:     0x559635e13270 - test::run_test_in_process::{{closure}}::h6f15adc4862466a2
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/test/src/lib.rs:643:60
[INFO] [stdout]   27:     0x559635e13270 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::haaf085868eec590b
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x559635e13270 - std::panicking::try::do_call::he863b9ffdd9dccd8
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:555:40
[INFO] [stdout]   29:     0x559635e13270 - std::panicking::try::h00518ddc92157d69
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:519:19
[INFO] [stdout]   30:     0x559635e13270 - std::panic::catch_unwind::ha54d881a3136a844
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panic.rs:142:14
[INFO] [stdout]   31:     0x559635e13270 - test::run_test_in_process::he6969e4cdcd00ab9
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/test/src/lib.rs:643:27
[INFO] [stdout]   32:     0x559635e13270 - test::run_test::{{closure}}::ha7bd2350e4208460
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/test/src/lib.rs:566:43
[INFO] [stdout]   33:     0x559635ddb603 - test::run_test::{{closure}}::h7e4f6d8c61dc1fc5
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/test/src/lib.rs:594:41
[INFO] [stdout]   34:     0x559635ddb603 - std::sys_common::backtrace::__rust_begin_short_backtrace::h7971b3168cdfe030
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   35:     0x559635de029f - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h940fea02fa91722e
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/thread/mod.rs:528:17
[INFO] [stdout]   36:     0x559635de029f - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hc9108612b0b55d6f
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x559635de029f - std::panicking::try::do_call::h088487cc7181ed41
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:555:40
[INFO] [stdout]   38:     0x559635de029f - std::panicking::try::hbe658ba86d10aeac
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:519:19
[INFO] [stdout]   39:     0x559635de029f - std::panic::catch_unwind::hbcfe75becdd3312a
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panic.rs:142:14
[INFO] [stdout]   40:     0x559635de029f - std::thread::Builder::spawn_unchecked_::{{closure}}::h5da9b0997b04a0b6
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/thread/mod.rs:527:30
[INFO] [stdout]   41:     0x559635de029f - core::ops::function::FnOnce::call_once{{vtable.shim}}::h282e25baa8bce548
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x559635e52385 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h7b00d7973698e306
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/alloc/src/boxed.rs:2016:9
[INFO] [stdout]   43:     0x559635e52385 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::ha210a4482bc8347c
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/alloc/src/boxed.rs:2016:9
[INFO] [stdout]   44:     0x559635e52385 - std::sys::pal::unix::thread::Thread::new::thread_start::h2e04f672130bcc99
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/sys/pal/unix/thread.rs:108:17
[INFO] [stdout]   45:     0x7f9583d64ac3 - <unknown>
[INFO] [stdout]   46:     0x7f9583df5bf4 - __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 0.12s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "49497b536e711851ae5f0f1727b6671891e752d6bd0751b20e947cbd987fd2f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49497b536e711851ae5f0f1727b6671891e752d6bd0751b20e947cbd987fd2f6", kill_on_drop: false }`
[INFO] [stdout] 49497b536e711851ae5f0f1727b6671891e752d6bd0751b20e947cbd987fd2f6