[INFO] crate gol 0.1.11 is already in cache [INFO] extracting crate gol 0.1.11 into work/ex/clippy-test-run/sources/stable/reg/gol/0.1.11 [INFO] extracting crate gol 0.1.11 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/gol/0.1.11 [INFO] validating manifest of gol-0.1.11 on toolchain stable [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of gol-0.1.11 on toolchain stable+rustflags=-Dclippy::into_iter_on_array [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing gol-0.1.11 [INFO] finished frobbing gol-0.1.11 [INFO] frobbed toml for gol-0.1.11 written to work/ex/clippy-test-run/sources/stable/reg/gol/0.1.11/Cargo.toml [INFO] started frobbing gol-0.1.11 [INFO] finished frobbing gol-0.1.11 [INFO] frobbed toml for gol-0.1.11 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/gol/0.1.11/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] linting gol-0.1.11 against stable for clippy-test-run [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/gol/0.1.11:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 7bcc7148b4fea65269b2b46dcfb5927651d440bbe5748315e553ceb855d491bb [INFO] running `"docker" "start" "-a" "7bcc7148b4fea65269b2b46dcfb5927651d440bbe5748315e553ceb855d491bb"` [INFO] [stderr] Compiling glutin v0.9.2 [INFO] [stderr] Checking rayon v0.8.2 [INFO] [stderr] Checking wayland-protocols v0.9.10 [INFO] [stderr] Checking wayland-kbd v0.9.1 [INFO] [stderr] Checking wayland-window v0.7.0 [INFO] [stderr] Checking winit v0.7.6 [INFO] [stderr] Checking gfx_window_glutin v0.17.0 [INFO] [stderr] Checking gol v0.1.11 (/opt/crater/workdir) [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/data/grid.rs:205:34 [INFO] [stderr] | [INFO] [stderr] 205 | let north = Coord { i: i_up, j: j }; [INFO] [stderr] | ^^^^ help: replace it with: `j` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::redundant_field_names)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/rendering/mod.rs:157:13 [INFO] [stderr] | [INFO] [stderr] 157 | updates_per_second: updates_per_second, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `updates_per_second` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/rendering/mod.rs:158:13 [INFO] [stderr] | [INFO] [stderr] 158 | window: window, [INFO] [stderr] | ^^^^^^^^^^^^^^ help: replace it with: `window` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/rendering/mod.rs:159:13 [INFO] [stderr] | [INFO] [stderr] 159 | device: device, [INFO] [stderr] | ^^^^^^^^^^^^^^ help: replace it with: `device` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/rendering/mod.rs:160:13 [INFO] [stderr] | [INFO] [stderr] 160 | events_loop: events_loop, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `events_loop` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/rendering/mod.rs:167:13 [INFO] [stderr] | [INFO] [stderr] 167 | encoder: encoder, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: replace it with: `encoder` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/rendering/mod.rs:180:13 [INFO] [stderr] | [INFO] [stderr] 180 | slice: slice, [INFO] [stderr] | ^^^^^^^^^^^^ help: replace it with: `slice` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/rendering/mod.rs:181:13 [INFO] [stderr] | [INFO] [stderr] 181 | upload: upload, [INFO] [stderr] | ^^^^^^^^^^^^^^ help: replace it with: `upload` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/data/grid.rs:205:34 [INFO] [stderr] | [INFO] [stderr] 205 | let north = Coord { i: i_up, j: j }; [INFO] [stderr] | ^^^^ help: replace it with: `j` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::redundant_field_names)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/rendering/mod.rs:157:13 [INFO] [stderr] | [INFO] [stderr] 157 | updates_per_second: updates_per_second, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `updates_per_second` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/rendering/mod.rs:158:13 [INFO] [stderr] | [INFO] [stderr] 158 | window: window, [INFO] [stderr] | ^^^^^^^^^^^^^^ help: replace it with: `window` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/rendering/mod.rs:159:13 [INFO] [stderr] | [INFO] [stderr] 159 | device: device, [INFO] [stderr] | ^^^^^^^^^^^^^^ help: replace it with: `device` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/rendering/mod.rs:160:13 [INFO] [stderr] | [INFO] [stderr] 160 | events_loop: events_loop, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `events_loop` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/rendering/mod.rs:167:13 [INFO] [stderr] | [INFO] [stderr] 167 | encoder: encoder, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: replace it with: `encoder` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/rendering/mod.rs:180:13 [INFO] [stderr] | [INFO] [stderr] 180 | slice: slice, [INFO] [stderr] | ^^^^^^^^^^^^ help: replace it with: `slice` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: redundant field names in struct initialization [INFO] [stderr] --> src/rendering/mod.rs:181:13 [INFO] [stderr] | [INFO] [stderr] 181 | upload: upload, [INFO] [stderr] | ^^^^^^^^^^^^^^ help: replace it with: `upload` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names [INFO] [stderr] [INFO] [stderr] warning: unneeded unit return type [INFO] [stderr] --> src/data/cell.rs:19:46 [INFO] [stderr] | [INFO] [stderr] 19 | pub fn update(&mut self, status: Status) -> () { [INFO] [stderr] | ^^^^^ help: remove the `-> ()` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::unused_unit)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit [INFO] [stderr] [INFO] [stderr] warning: long literal lacking separators [INFO] [stderr] --> src/data/grid.rs:7:39 [INFO] [stderr] | [INFO] [stderr] 7 | pub const PAR_THRESHOLD_AREA: usize = 250000; [INFO] [stderr] | ^^^^^^ help: consider: `250_000` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::unreadable_literal)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal [INFO] [stderr] [INFO] [stderr] warning: doc comment not used by rustdoc [INFO] [stderr] --> src/data/grid.rs:44:9 [INFO] [stderr] | [INFO] [stderr] 44 | /// Grid is a matrix with {height} rows and {width} columns, addressed [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_doc_comments)] on by default [INFO] [stderr] [INFO] [stderr] warning: unneeded unit return type [INFO] [stderr] --> src/data/grid.rs:138:31 [INFO] [stderr] | [INFO] [stderr] 138 | pub fn advance(&mut self) -> () { [INFO] [stderr] | ^^^^^ help: remove the `-> ()` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/rendering/mod.rs:16:22 [INFO] [stderr] | [INFO] [stderr] 16 | const WINDOW_TITLE: &'static str = "Simple Life"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::const_static_lifetime)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: unneeded unit return type [INFO] [stderr] --> src/data/cell.rs:19:46 [INFO] [stderr] | [INFO] [stderr] 19 | pub fn update(&mut self, status: Status) -> () { [INFO] [stderr] | ^^^^^ help: remove the `-> ()` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::unused_unit)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit [INFO] [stderr] [INFO] [stderr] warning: long literal lacking separators [INFO] [stderr] --> src/data/grid.rs:7:39 [INFO] [stderr] | [INFO] [stderr] 7 | pub const PAR_THRESHOLD_AREA: usize = 250000; [INFO] [stderr] | ^^^^^^ help: consider: `250_000` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::unreadable_literal)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal [INFO] [stderr] [INFO] [stderr] warning: doc comment not used by rustdoc [INFO] [stderr] --> src/data/grid.rs:44:9 [INFO] [stderr] | [INFO] [stderr] 44 | /// Grid is a matrix with {height} rows and {width} columns, addressed [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_doc_comments)] on by default [INFO] [stderr] [INFO] [stderr] warning: unneeded unit return type [INFO] [stderr] --> src/data/grid.rs:138:31 [INFO] [stderr] | [INFO] [stderr] 138 | pub fn advance(&mut self) -> () { [INFO] [stderr] | ^^^^^ help: remove the `-> ()` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit [INFO] [stderr] [INFO] [stderr] warning: Constants have by default a `'static` lifetime [INFO] [stderr] --> src/rendering/mod.rs:16:22 [INFO] [stderr] | [INFO] [stderr] 16 | const WINDOW_TITLE: &'static str = "Simple Life"; [INFO] [stderr] | -^^^^^^^---- help: consider removing `'static`: `&str` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::const_static_lifetime)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime [INFO] [stderr] [INFO] [stderr] warning: using `clone` on a `Copy` type [INFO] [stderr] --> src/rendering/mod.rs:84:20 [INFO] [stderr] | [INFO] [stderr] 84 | v.push(inst.clone()); [INFO] [stderr] | ^^^^^^^^^^^^ help: try removing the `clone` call: `inst` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::clone_on_copy)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy [INFO] [stderr] [INFO] [stderr] warning: passing a unit value to a function [INFO] [stderr] --> src/rendering/mod.rs:209:12 [INFO] [stderr] | [INFO] [stderr] 209 | Ok(self.device.cleanup()) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::unit_arg)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg [INFO] [stderr] help: if you intended to pass a unit value, use a unit literal instead [INFO] [stderr] | [INFO] [stderr] 209 | Ok(()) [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let` [INFO] [stderr] --> src/rendering/mod.rs:245:32 [INFO] [stderr] | [INFO] [stderr] 245 | |polled_event| match polled_event { [INFO] [stderr] | ________________________________^ [INFO] [stderr] 246 | | glutin::Event::WindowEvent { event, .. } => { [INFO] [stderr] 247 | | match event { [INFO] [stderr] 248 | | glutin::WindowEvent::KeyboardInput { [INFO] [stderr] ... | [INFO] [stderr] 262 | | _ => (), [INFO] [stderr] 263 | | }, [INFO] [stderr] | |_________________^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::single_match)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match [INFO] [stderr] help: try this [INFO] [stderr] | [INFO] [stderr] 245 | |polled_event| if let glutin::Event::WindowEvent { event, .. } = polled_event { [INFO] [stderr] 246 | match event { [INFO] [stderr] 247 | glutin::WindowEvent::KeyboardInput { [INFO] [stderr] 248 | input: glutin::KeyboardInput { [INFO] [stderr] 249 | virtual_keycode: Some(glutin::VirtualKeyCode::Escape), .. [INFO] [stderr] 250 | }, [INFO] [stderr] ... [INFO] [stderr] [INFO] [stderr] warning: casting u16 to u64 may become silently lossy if types change [INFO] [stderr] --> src/rendering/mod.rs:273:54 [INFO] [stderr] | [INFO] [stderr] 273 | let wait_duration = Duration::from_millis(1000 / updates_per_second as u64); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u64::from(updates_per_second)` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::cast_lossless)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless [INFO] [stderr] [INFO] [stderr] warning: using `clone` on a `Copy` type [INFO] [stderr] --> src/rendering/mod.rs:84:20 [INFO] [stderr] | [INFO] [stderr] 84 | v.push(inst.clone()); [INFO] [stderr] | ^^^^^^^^^^^^ help: try removing the `clone` call: `inst` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::clone_on_copy)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy [INFO] [stderr] [INFO] [stderr] warning: passing a unit value to a function [INFO] [stderr] --> src/rendering/mod.rs:209:12 [INFO] [stderr] | [INFO] [stderr] 209 | Ok(self.device.cleanup()) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::unit_arg)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg [INFO] [stderr] help: if you intended to pass a unit value, use a unit literal instead [INFO] [stderr] | [INFO] [stderr] 209 | Ok(()) [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let` [INFO] [stderr] --> src/rendering/mod.rs:245:32 [INFO] [stderr] | [INFO] [stderr] 245 | |polled_event| match polled_event { [INFO] [stderr] | ________________________________^ [INFO] [stderr] 246 | | glutin::Event::WindowEvent { event, .. } => { [INFO] [stderr] 247 | | match event { [INFO] [stderr] 248 | | glutin::WindowEvent::KeyboardInput { [INFO] [stderr] ... | [INFO] [stderr] 262 | | _ => (), [INFO] [stderr] 263 | | }, [INFO] [stderr] | |_________________^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::single_match)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match [INFO] [stderr] help: try this [INFO] [stderr] | [INFO] [stderr] 245 | |polled_event| if let glutin::Event::WindowEvent { event, .. } = polled_event { [INFO] [stderr] 246 | match event { [INFO] [stderr] 247 | glutin::WindowEvent::KeyboardInput { [INFO] [stderr] 248 | input: glutin::KeyboardInput { [INFO] [stderr] 249 | virtual_keycode: Some(glutin::VirtualKeyCode::Escape), .. [INFO] [stderr] 250 | }, [INFO] [stderr] ... [INFO] [stderr] [INFO] [stderr] warning: casting u16 to u64 may become silently lossy if types change [INFO] [stderr] --> src/rendering/mod.rs:273:54 [INFO] [stderr] | [INFO] [stderr] 273 | let wait_duration = Duration::from_millis(1000 / updates_per_second as u64); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u64::from(updates_per_second)` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::cast_lossless)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless [INFO] [stderr] [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> benches/rendering_benchmark.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![feature(test)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0554`. [INFO] [stderr] error: Could not compile `gol`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> benches/grid_benchmark.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![feature(test)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0554`. [INFO] [stderr] error: Could not compile `gol`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "7bcc7148b4fea65269b2b46dcfb5927651d440bbe5748315e553ceb855d491bb"` [INFO] running `"docker" "rm" "-f" "7bcc7148b4fea65269b2b46dcfb5927651d440bbe5748315e553ceb855d491bb"` [INFO] [stdout] 7bcc7148b4fea65269b2b46dcfb5927651d440bbe5748315e553ceb855d491bb