[INFO] updating cached repository PhilipTrauner/match3 [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/PhilipTrauner/match3 [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/PhilipTrauner/match3" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/PhilipTrauner/match3"` [INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/PhilipTrauner/match3'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/PhilipTrauner/match3" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/PhilipTrauner/match3"` [INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/PhilipTrauner/match3'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 6f1778267ad88f8273cd38cb8b8809944c62eebf [INFO] sha for GitHub repo PhilipTrauner/match3: 6f1778267ad88f8273cd38cb8b8809944c62eebf [INFO] validating manifest of PhilipTrauner/match3 on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of PhilipTrauner/match3 on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing PhilipTrauner/match3 [INFO] finished frobbing PhilipTrauner/match3 [INFO] frobbed toml for PhilipTrauner/match3 written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/PhilipTrauner/match3/Cargo.toml [INFO] started frobbing PhilipTrauner/match3 [INFO] finished frobbing PhilipTrauner/match3 [INFO] frobbed toml for PhilipTrauner/match3 written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/PhilipTrauner/match3/Cargo.toml [INFO] crate PhilipTrauner/match3 already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking PhilipTrauner/match3 against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-3/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/PhilipTrauner/match3:/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 387de4bc808eeef7bc64e2f63e238d9c936b57257533a55e1fe3b0b9df17c050 [INFO] running `"docker" "start" "-a" "387de4bc808eeef7bc64e2f63e238d9c936b57257533a55e1fe3b0b9df17c050"` [INFO] [stderr] Compiling serde v0.9.9 [INFO] [stderr] Compiling xml-rs v0.3.8 [INFO] [stderr] Checking arrayvec v0.3.20 [INFO] [stderr] Checking image v0.12.3 [INFO] [stderr] Checking rusttype v0.2.1 [INFO] [stderr] Compiling wayland-scanner v0.7.8 [INFO] [stderr] Compiling gl_generator v0.5.2 [INFO] [stderr] warning[E0311]: the parameter type `K` may not live long enough [INFO] [stderr] --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rusttype-0.2.1/src/support/bst/map.rs:81:19 [INFO] [stderr] | [INFO] [stderr] 81 | match node.force() { [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = help: consider adding an explicit lifetime bound for `K` [INFO] [stderr] note: the parameter type `K` must be valid for the anonymous lifetime #1 defined on the function body at 77:9... [INFO] [stderr] --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rusttype-0.2.1/src/support/bst/map.rs:77:9 [INFO] [stderr] | [INFO] [stderr] 77 | / fn clone_subtree( [INFO] [stderr] 78 | | node: node::NodeRef) [INFO] [stderr] 79 | | -> BTreeMap { [INFO] [stderr] 80 | | [INFO] [stderr] ... | [INFO] [stderr] 136| | } [INFO] [stderr] 137| | } [INFO] [stderr] | |_________^ [INFO] [stderr] = warning: this error has been downgraded to a warning for backwards compatibility with previous releases [INFO] [stderr] = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future [INFO] [stderr] = note: for more information, try `rustc --explain E0729` [INFO] [stderr] [INFO] [stderr] warning[E0311]: the parameter type `V` may not live long enough [INFO] [stderr] --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rusttype-0.2.1/src/support/bst/map.rs:81:19 [INFO] [stderr] | [INFO] [stderr] 81 | match node.force() { [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = help: consider adding an explicit lifetime bound for `V` [INFO] [stderr] note: the parameter type `V` must be valid for the anonymous lifetime #1 defined on the function body at 77:9... [INFO] [stderr] --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rusttype-0.2.1/src/support/bst/map.rs:77:9 [INFO] [stderr] | [INFO] [stderr] 77 | / fn clone_subtree( [INFO] [stderr] 78 | | node: node::NodeRef) [INFO] [stderr] 79 | | -> BTreeMap { [INFO] [stderr] 80 | | [INFO] [stderr] ... | [INFO] [stderr] 136| | } [INFO] [stderr] 137| | } [INFO] [stderr] | |_________^ [INFO] [stderr] = warning: this error has been downgraded to a warning for backwards compatibility with previous releases [INFO] [stderr] = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future [INFO] [stderr] = note: for more information, try `rustc --explain E0729` [INFO] [stderr] [INFO] [stderr] Compiling glutin v0.7.4 [INFO] [stderr] Compiling gl v0.6.1 [INFO] [stderr] Compiling wayland-client v0.7.8 [INFO] [stderr] Compiling serde_json v0.9.8 [INFO] [stderr] Compiling target_build_utils v0.3.0 [INFO] [stderr] Compiling libloading v0.3.2 [INFO] [stderr] Checking piston2d-opengl_graphics v0.42.0 [INFO] [stderr] Checking dlib v0.3.1 [INFO] [stderr] Checking wayland-sys v0.7.8 [INFO] [stderr] Checking wayland-window v0.4.4 [INFO] [stderr] Checking wayland-kbd v0.6.3 [INFO] [stderr] Checking winit v0.5.11 [INFO] [stderr] Checking pistoncore-glutin_window v0.35.0 [INFO] [stderr] Checking match3 v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `graphics::math::Matrix2d` [INFO] [stderr] --> src/main.rs:16:5 [INFO] [stderr] | [INFO] [stderr] 16 | use graphics::math::Matrix2d; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/main.rs:36:1 [INFO] [stderr] | [INFO] [stderr] 36 | / lazy_static! { [INFO] [stderr] 37 | | pub static ref TILE_SIZE: Size = Size {width: 100.0, height: 100.0}; [INFO] [stderr] 38 | | } [INFO] [stderr] | |_^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/main.rs:36:1 [INFO] [stderr] | [INFO] [stderr] 36 | / lazy_static! { [INFO] [stderr] 37 | | pub static ref TILE_SIZE: Size = Size {width: 100.0, height: 100.0}; [INFO] [stderr] 38 | | } [INFO] [stderr] | |_^ [INFO] [stderr] | [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused import: `graphics::math::Matrix2d` [INFO] [stderr] --> src/main.rs:16:5 [INFO] [stderr] | [INFO] [stderr] 16 | use graphics::math::Matrix2d; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/main.rs:36:1 [INFO] [stderr] | [INFO] [stderr] 36 | / lazy_static! { [INFO] [stderr] 37 | | pub static ref TILE_SIZE: Size = Size {width: 100.0, height: 100.0}; [INFO] [stderr] 38 | | } [INFO] [stderr] | |_^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/main.rs:36:1 [INFO] [stderr] | [INFO] [stderr] 36 | / lazy_static! { [INFO] [stderr] 37 | | pub static ref TILE_SIZE: Size = Size {width: 100.0, height: 100.0}; [INFO] [stderr] 38 | | } [INFO] [stderr] | |_^ [INFO] [stderr] | [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused variable: `button` [INFO] [stderr] --> src/main.rs:364:29 [INFO] [stderr] | [INFO] [stderr] 364 | if let Some(Button::Mouse(button)) = e.press_args() { [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_button` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `args` [INFO] [stderr] --> src/main.rs:135:23 [INFO] [stderr] | [INFO] [stderr] 135 | fn update(&mut self, args: &UpdateArgs) { [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_args` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `args` [INFO] [stderr] --> src/main.rs:141:23 [INFO] [stderr] | [INFO] [stderr] 141 | fn resize(&mut self, args: &[u32; 2]) { [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_args` [INFO] [stderr] [INFO] [stderr] warning: value assigned to `column_1` is never read [INFO] [stderr] --> src/main.rs:235:17 [INFO] [stderr] | [INFO] [stderr] 235 | let mut column_1: usize = 0; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: value assigned to `column_2` is never read [INFO] [stderr] --> src/main.rs:236:17 [INFO] [stderr] | [INFO] [stderr] 236 | let mut column_2: usize = 0; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: value assigned to `row_1` is never read [INFO] [stderr] --> src/main.rs:252:17 [INFO] [stderr] | [INFO] [stderr] 252 | let mut row_1: usize = 0; [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: value assigned to `row_2` is never read [INFO] [stderr] --> src/main.rs:253:17 [INFO] [stderr] | [INFO] [stderr] 253 | let mut row_2: usize = 0; [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: value assigned to `column_1` is never read [INFO] [stderr] --> src/main.rs:254:17 [INFO] [stderr] | [INFO] [stderr] 254 | let mut column_1: usize = 0; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: value assigned to `column_2` is never read [INFO] [stderr] --> src/main.rs:255:17 [INFO] [stderr] | [INFO] [stderr] 255 | let mut column_2: usize = 0; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `last_color` [INFO] [stderr] --> src/main.rs:275:16 [INFO] [stderr] | [INFO] [stderr] 275 | let mut last_color: Option<[f32; 4]> = None; [INFO] [stderr] | ^^^^^^^^^^ help: consider prefixing with an underscore: `_last_color` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `color_count` [INFO] [stderr] --> src/main.rs:276:16 [INFO] [stderr] | [INFO] [stderr] 276 | let mut color_count = 0; [INFO] [stderr] | ^^^^^^^^^^^ help: consider prefixing with an underscore: `_color_count` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:197:11 [INFO] [stderr] | [INFO] [stderr] 197 | let mut row_1 = unwrapped_clicked_tile_index[0]; [INFO] [stderr] | ----^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:198:11 [INFO] [stderr] | [INFO] [stderr] 198 | let mut column_1 = unwrapped_clicked_tile_index[1]; [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:199:11 [INFO] [stderr] | [INFO] [stderr] 199 | let mut row_2 = unwrapped_last_clicked_tile_index[0]; [INFO] [stderr] | ----^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:200:11 [INFO] [stderr] | [INFO] [stderr] 200 | let mut column_2 = unwrapped_last_clicked_tile_index[1]; [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:275:12 [INFO] [stderr] | [INFO] [stderr] 275 | let mut last_color: Option<[f32; 4]> = None; [INFO] [stderr] | ----^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:276:12 [INFO] [stderr] | [INFO] [stderr] 276 | let mut color_count = 0; [INFO] [stderr] | ----^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: method is never used: `set_color` [INFO] [stderr] --> src/main.rs:67:2 [INFO] [stderr] | [INFO] [stderr] 67 | fn set_color(&mut self, color: [f32; 4]) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `button` [INFO] [stderr] --> src/main.rs:364:29 [INFO] [stderr] | [INFO] [stderr] 364 | if let Some(Button::Mouse(button)) = e.press_args() { [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_button` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `args` [INFO] [stderr] --> src/main.rs:135:23 [INFO] [stderr] | [INFO] [stderr] 135 | fn update(&mut self, args: &UpdateArgs) { [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_args` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `args` [INFO] [stderr] --> src/main.rs:141:23 [INFO] [stderr] | [INFO] [stderr] 141 | fn resize(&mut self, args: &[u32; 2]) { [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_args` [INFO] [stderr] [INFO] [stderr] warning: value assigned to `column_1` is never read [INFO] [stderr] --> src/main.rs:235:17 [INFO] [stderr] | [INFO] [stderr] 235 | let mut column_1: usize = 0; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: value assigned to `column_2` is never read [INFO] [stderr] --> src/main.rs:236:17 [INFO] [stderr] | [INFO] [stderr] 236 | let mut column_2: usize = 0; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: value assigned to `row_1` is never read [INFO] [stderr] --> src/main.rs:252:17 [INFO] [stderr] | [INFO] [stderr] 252 | let mut row_1: usize = 0; [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: value assigned to `row_2` is never read [INFO] [stderr] --> src/main.rs:253:17 [INFO] [stderr] | [INFO] [stderr] 253 | let mut row_2: usize = 0; [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: value assigned to `column_1` is never read [INFO] [stderr] --> src/main.rs:254:17 [INFO] [stderr] | [INFO] [stderr] 254 | let mut column_1: usize = 0; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: value assigned to `column_2` is never read [INFO] [stderr] --> src/main.rs:255:17 [INFO] [stderr] | [INFO] [stderr] 255 | let mut column_2: usize = 0; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `last_color` [INFO] [stderr] --> src/main.rs:275:16 [INFO] [stderr] | [INFO] [stderr] 275 | let mut last_color: Option<[f32; 4]> = None; [INFO] [stderr] | ^^^^^^^^^^ help: consider prefixing with an underscore: `_last_color` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `color_count` [INFO] [stderr] --> src/main.rs:276:16 [INFO] [stderr] | [INFO] [stderr] 276 | let mut color_count = 0; [INFO] [stderr] | ^^^^^^^^^^^ help: consider prefixing with an underscore: `_color_count` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:197:11 [INFO] [stderr] | [INFO] [stderr] 197 | let mut row_1 = unwrapped_clicked_tile_index[0]; [INFO] [stderr] | ----^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:198:11 [INFO] [stderr] | [INFO] [stderr] 198 | let mut column_1 = unwrapped_clicked_tile_index[1]; [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:199:11 [INFO] [stderr] | [INFO] [stderr] 199 | let mut row_2 = unwrapped_last_clicked_tile_index[0]; [INFO] [stderr] | ----^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:200:11 [INFO] [stderr] | [INFO] [stderr] 200 | let mut column_2 = unwrapped_last_clicked_tile_index[1]; [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:275:12 [INFO] [stderr] | [INFO] [stderr] 275 | let mut last_color: Option<[f32; 4]> = None; [INFO] [stderr] | ----^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:276:12 [INFO] [stderr] | [INFO] [stderr] 276 | let mut color_count = 0; [INFO] [stderr] | ----^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: method is never used: `set_color` [INFO] [stderr] --> src/main.rs:67:2 [INFO] [stderr] | [INFO] [stderr] 67 | fn set_color(&mut self, color: [f32; 4]) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 47.52s [INFO] running `"docker" "inspect" "387de4bc808eeef7bc64e2f63e238d9c936b57257533a55e1fe3b0b9df17c050"` [INFO] running `"docker" "rm" "-f" "387de4bc808eeef7bc64e2f63e238d9c936b57257533a55e1fe3b0b9df17c050"` [INFO] [stdout] 387de4bc808eeef7bc64e2f63e238d9c936b57257533a55e1fe3b0b9df17c050