Dec 19 15:48:55.661 INFO checking ijks/piet-rs against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955 Dec 19 15:48:55.661 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-3/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/ijks/piet-rs:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"` Dec 19 15:48:56.028 INFO [stdout] 0c7d7d1487c00b4ff0174b008c4a1b4028d474125756233ccefd3f427b1a3c79 Dec 19 15:48:56.032 INFO running `"docker" "start" "-a" "0c7d7d1487c00b4ff0174b008c4a1b4028d474125756233ccefd3f427b1a3c79"` Dec 19 15:48:57.740 INFO [stderr] Compiling cc v1.0.2 Dec 19 15:48:57.743 INFO [stderr] Checking num_cpus v1.7.0 Dec 19 15:48:57.743 INFO [stderr] Checking num-bigint v0.1.40 Dec 19 15:48:58.248 INFO [stderr] Checking rayon-core v1.2.1 Dec 19 15:49:00.124 INFO [stderr] Checking rayon v0.8.2 Dec 19 15:49:01.808 INFO [stderr] Checking num-rational v0.1.39 Dec 19 15:49:02.828 INFO [stderr] Compiling backtrace-sys v0.1.16 Dec 19 15:49:03.717 INFO [stderr] Checking num v0.1.40 Dec 19 15:49:07.152 INFO [stderr] Checking jpeg-decoder v0.1.13 Dec 19 15:49:09.323 INFO [stderr] Checking image v0.17.0 Dec 19 15:49:21.909 INFO [stderr] Checking backtrace v0.3.3 Dec 19 15:49:22.446 INFO [stderr] Checking error-chain v0.11.0 Dec 19 15:49:22.964 INFO [stderr] Checking piet v0.1.0 (/opt/crater/workdir) Dec 19 15:49:23.300 INFO [stderr] warning: unused import: `std::cmp::Ordering` Dec 19 15:49:23.300 INFO [stderr] --> src/interpreter.rs:1:5 Dec 19 15:49:23.300 INFO [stderr] | Dec 19 15:49:23.300 INFO [stderr] 1 | use std::cmp::Ordering; Dec 19 15:49:23.300 INFO [stderr] | ^^^^^^^^^^^^^^^^^^ Dec 19 15:49:23.300 INFO [stderr] | Dec 19 15:49:23.300 INFO [stderr] = note: #[warn(unused_imports)] on by default Dec 19 15:49:23.300 INFO [stderr] Dec 19 15:49:23.600 INFO [stderr] warning: unused variable: `x` Dec 19 15:49:23.600 INFO [stderr] --> src/interpreter.rs:120:29 Dec 19 15:49:23.600 INFO [stderr] | Dec 19 15:49:23.600 INFO [stderr] 120 | .filter(|&&(x, y)| y == farthest_y) Dec 19 15:49:23.600 INFO [stderr] | ^ help: consider using `_x` instead Dec 19 15:49:23.600 INFO [stderr] | Dec 19 15:49:23.600 INFO [stderr] = note: #[warn(unused_variables)] on by default Dec 19 15:49:23.600 INFO [stderr] Dec 19 15:49:23.600 INFO [stderr] warning: unused variable: `y` Dec 19 15:49:23.600 INFO [stderr] --> src/interpreter.rs:133:32 Dec 19 15:49:23.600 INFO [stderr] | Dec 19 15:49:23.600 INFO [stderr] 133 | .filter(|&&(x, y)| x == farthest_x) Dec 19 15:49:23.600 INFO [stderr] | ^ help: consider using `_y` instead Dec 19 15:49:23.600 INFO [stderr] Dec 19 15:49:23.600 INFO [stderr] warning: unused variable: `height` Dec 19 15:49:23.600 INFO [stderr] --> src/program.rs:78:21 Dec 19 15:49:23.600 INFO [stderr] | Dec 19 15:49:23.600 INFO [stderr] 78 | let (width, height) = self.size; Dec 19 15:49:23.600 INFO [stderr] | ^^^^^^ help: consider using `_height` instead Dec 19 15:49:23.600 INFO [stderr] Dec 19 15:49:23.721 INFO [stderr] warning: variant is never constructed: `Up` Dec 19 15:49:23.721 INFO [stderr] --> src/interpreter.rs:14:5 Dec 19 15:49:23.721 INFO [stderr] | Dec 19 15:49:23.721 INFO [stderr] 14 | Up, Dec 19 15:49:23.721 INFO [stderr] | ^^ Dec 19 15:49:23.721 INFO [stderr] | Dec 19 15:49:23.721 INFO [stderr] = note: #[warn(dead_code)] on by default Dec 19 15:49:23.721 INFO [stderr] Dec 19 15:49:23.721 INFO [stderr] warning: variant is never constructed: `Down` Dec 19 15:49:23.721 INFO [stderr] --> src/interpreter.rs:16:5 Dec 19 15:49:23.721 INFO [stderr] | Dec 19 15:49:23.721 INFO [stderr] 16 | Down, Dec 19 15:49:23.721 INFO [stderr] | ^^^^ Dec 19 15:49:23.721 INFO [stderr] Dec 19 15:49:23.721 INFO [stderr] warning: variant is never constructed: `Left` Dec 19 15:49:23.721 INFO [stderr] --> src/interpreter.rs:17:5 Dec 19 15:49:23.721 INFO [stderr] | Dec 19 15:49:23.721 INFO [stderr] 17 | Left, Dec 19 15:49:23.721 INFO [stderr] | ^^^^ Dec 19 15:49:23.721 INFO [stderr] Dec 19 15:49:23.721 INFO [stderr] warning: method is never used: `rotate_clockwise` Dec 19 15:49:23.721 INFO [stderr] --> src/interpreter.rs:21:5 Dec 19 15:49:23.721 INFO [stderr] | Dec 19 15:49:23.721 INFO [stderr] 21 | pub fn rotate_clockwise(&mut self) { Dec 19 15:49:23.721 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 19 15:49:23.721 INFO [stderr] Dec 19 15:49:23.721 INFO [stderr] warning: method is never used: `rotate_counterclockwise` Dec 19 15:49:23.721 INFO [stderr] --> src/interpreter.rs:32:5 Dec 19 15:49:23.721 INFO [stderr] | Dec 19 15:49:23.721 INFO [stderr] 32 | pub fn rotate_counterclockwise(&mut self) { Dec 19 15:49:23.721 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 19 15:49:23.721 INFO [stderr] Dec 19 15:49:23.721 INFO [stderr] warning: variant is never constructed: `Right` Dec 19 15:49:23.721 INFO [stderr] --> src/interpreter.rs:47:5 Dec 19 15:49:23.721 INFO [stderr] | Dec 19 15:49:23.721 INFO [stderr] 47 | Right, Dec 19 15:49:23.721 INFO [stderr] | ^^^^^ Dec 19 15:49:23.721 INFO [stderr] Dec 19 15:49:23.721 INFO [stderr] warning: method is never used: `switch` Dec 19 15:49:23.721 INFO [stderr] --> src/interpreter.rs:51:5 Dec 19 15:49:23.721 INFO [stderr] | Dec 19 15:49:23.721 INFO [stderr] 51 | pub fn switch(&mut self) { Dec 19 15:49:23.721 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ Dec 19 15:49:23.721 INFO [stderr] Dec 19 15:49:23.721 INFO [stderr] warning: method is never used: `current_block` Dec 19 15:49:23.721 INFO [stderr] --> src/interpreter.rs:93:5 Dec 19 15:49:23.721 INFO [stderr] | Dec 19 15:49:23.721 INFO [stderr] 93 | fn current_block(&self) -> HashSet { Dec 19 15:49:23.721 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 19 15:49:23.721 INFO [stderr] Dec 19 15:49:23.721 INFO [stderr] warning: method is never used: `next_coords` Dec 19 15:49:23.721 INFO [stderr] --> src/interpreter.rs:97:5 Dec 19 15:49:23.721 INFO [stderr] | Dec 19 15:49:23.721 INFO [stderr] 97 | fn next_coords(&self) -> Coords { Dec 19 15:49:23.721 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 19 15:49:23.721 INFO [stderr] Dec 19 15:49:23.721 INFO [stderr] warning: function is never used: `x_key` Dec 19 15:49:23.721 INFO [stderr] --> src/interpreter.rs:101:9 Dec 19 15:49:23.721 INFO [stderr] | Dec 19 15:49:23.721 INFO [stderr] 101 | fn x_key(&(x, _): &Coords) -> usize { Dec 19 15:49:23.721 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 19 15:49:23.721 INFO [stderr] Dec 19 15:49:23.721 INFO [stderr] warning: function is never used: `y_key` Dec 19 15:49:23.721 INFO [stderr] --> src/interpreter.rs:104:9 Dec 19 15:49:23.721 INFO [stderr] | Dec 19 15:49:23.721 INFO [stderr] 104 | fn y_key(&(_, y): &Coords) -> usize { Dec 19 15:49:23.721 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 19 15:49:23.721 INFO [stderr] Dec 19 15:49:23.721 INFO [stderr] warning: method is never used: `execute_command` Dec 19 15:49:23.721 INFO [stderr] --> src/interpreter.rs:167:5 Dec 19 15:49:23.721 INFO [stderr] | Dec 19 15:49:23.721 INFO [stderr] 167 | fn execute_command(&mut self, command: &Command) { Dec 19 15:49:23.721 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 19 15:49:23.721 INFO [stderr] Dec 19 15:49:23.721 INFO [stderr] warning: method is never used: `pointer` Dec 19 15:49:23.721 INFO [stderr] --> src/interpreter.rs:261:5 Dec 19 15:49:23.721 INFO [stderr] | Dec 19 15:49:23.721 INFO [stderr] 261 | fn pointer(&mut self, steps: i64) { Dec 19 15:49:23.721 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 19 15:49:23.721 INFO [stderr] Dec 19 15:49:23.721 INFO [stderr] warning: method is never used: `switch` Dec 19 15:49:23.721 INFO [stderr] --> src/interpreter.rs:273:5 Dec 19 15:49:23.721 INFO [stderr] | Dec 19 15:49:23.721 INFO [stderr] 273 | fn switch(&mut self, times: i64) { Dec 19 15:49:23.721 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 19 15:49:23.721 INFO [stderr] Dec 19 15:49:23.721 INFO [stderr] warning: method is never used: `index_to_coords` Dec 19 15:49:23.722 INFO [stderr] --> src/program.rs:83:5 Dec 19 15:49:23.722 INFO [stderr] | Dec 19 15:49:23.722 INFO [stderr] 83 | fn index_to_coords(&self, index: usize) -> Option { Dec 19 15:49:23.722 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 19 15:49:23.722 INFO [stderr] Dec 19 15:49:23.741 INFO [stderr] warning: unused import: `std::cmp::Ordering` Dec 19 15:49:23.741 INFO [stderr] --> src/interpreter.rs:1:5 Dec 19 15:49:23.741 INFO [stderr] | Dec 19 15:49:23.741 INFO [stderr] 1 | use std::cmp::Ordering; Dec 19 15:49:23.741 INFO [stderr] | ^^^^^^^^^^^^^^^^^^ Dec 19 15:49:23.741 INFO [stderr] | Dec 19 15:49:23.741 INFO [stderr] = note: #[warn(unused_imports)] on by default Dec 19 15:49:23.741 INFO [stderr] Dec 19 15:49:24.372 INFO [stderr] warning: unused variable: `x` Dec 19 15:49:24.373 INFO [stderr] --> src/interpreter.rs:120:29 Dec 19 15:49:24.373 INFO [stderr] | Dec 19 15:49:24.373 INFO [stderr] 120 | .filter(|&&(x, y)| y == farthest_y) Dec 19 15:49:24.373 INFO [stderr] | ^ help: consider using `_x` instead Dec 19 15:49:24.373 INFO [stderr] | Dec 19 15:49:24.373 INFO [stderr] = note: #[warn(unused_variables)] on by default Dec 19 15:49:24.374 INFO [stderr] Dec 19 15:49:24.374 INFO [stderr] warning: unused variable: `y` Dec 19 15:49:24.374 INFO [stderr] --> src/interpreter.rs:133:32 Dec 19 15:49:24.374 INFO [stderr] | Dec 19 15:49:24.374 INFO [stderr] 133 | .filter(|&&(x, y)| x == farthest_x) Dec 19 15:49:24.374 INFO [stderr] | ^ help: consider using `_y` instead Dec 19 15:49:24.374 INFO [stderr] Dec 19 15:49:24.375 INFO [stderr] warning: unused variable: `height` Dec 19 15:49:24.375 INFO [stderr] --> src/program.rs:78:21 Dec 19 15:49:24.375 INFO [stderr] | Dec 19 15:49:24.375 INFO [stderr] 78 | let (width, height) = self.size; Dec 19 15:49:24.375 INFO [stderr] | ^^^^^^ help: consider using `_height` instead Dec 19 15:49:24.375 INFO [stderr] Dec 19 15:49:24.580 INFO [stderr] warning: unused variable: `codel_size` Dec 19 15:49:24.580 INFO [stderr] --> src/main.rs:23:9 Dec 19 15:49:24.580 INFO [stderr] | Dec 19 15:49:24.580 INFO [stderr] 23 | let codel_size = matches.value_of("codel_size").map(|_| unimplemented!()); Dec 19 15:49:24.580 INFO [stderr] | ^^^^^^^^^^ help: consider using `_codel_size` instead Dec 19 15:49:24.584 INFO [stderr] | Dec 19 15:49:24.584 INFO [stderr] = note: #[warn(unused_variables)] on by default Dec 19 15:49:24.584 INFO [stderr] Dec 19 15:49:24.609 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 19 15:49:24.609 INFO [stderr] --> src/main.rs:34:5 Dec 19 15:49:24.609 INFO [stderr] | Dec 19 15:49:24.609 INFO [stderr] 34 | interpreter.run(); Dec 19 15:49:24.609 INFO [stderr] | ^^^^^^^^^^^^^^^^^^ Dec 19 15:49:24.609 INFO [stderr] | Dec 19 15:49:24.609 INFO [stderr] = note: #[warn(unused_must_use)] on by default Dec 19 15:49:24.609 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 19 15:49:24.609 INFO [stderr] Dec 19 15:49:24.632 INFO [stderr] warning: variant is never constructed: `Up` Dec 19 15:49:24.633 INFO [stderr] --> src/interpreter.rs:14:5 Dec 19 15:49:24.633 INFO [stderr] | Dec 19 15:49:24.633 INFO [stderr] 14 | Up, Dec 19 15:49:24.633 INFO [stderr] | ^^ Dec 19 15:49:24.633 INFO [stderr] | Dec 19 15:49:24.633 INFO [stderr] = note: #[warn(dead_code)] on by default Dec 19 15:49:24.633 INFO [stderr] Dec 19 15:49:24.633 INFO [stderr] warning: variant is never constructed: `Down` Dec 19 15:49:24.633 INFO [stderr] --> src/interpreter.rs:16:5 Dec 19 15:49:24.633 INFO [stderr] | Dec 19 15:49:24.633 INFO [stderr] 16 | Down, Dec 19 15:49:24.633 INFO [stderr] | ^^^^ Dec 19 15:49:24.633 INFO [stderr] Dec 19 15:49:24.633 INFO [stderr] warning: variant is never constructed: `Left` Dec 19 15:49:24.633 INFO [stderr] --> src/interpreter.rs:17:5 Dec 19 15:49:24.633 INFO [stderr] | Dec 19 15:49:24.633 INFO [stderr] 17 | Left, Dec 19 15:49:24.633 INFO [stderr] | ^^^^ Dec 19 15:49:24.633 INFO [stderr] Dec 19 15:49:24.633 INFO [stderr] warning: method is never used: `rotate_clockwise` Dec 19 15:49:24.633 INFO [stderr] --> src/interpreter.rs:21:5 Dec 19 15:49:24.633 INFO [stderr] | Dec 19 15:49:24.633 INFO [stderr] 21 | pub fn rotate_clockwise(&mut self) { Dec 19 15:49:24.633 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 19 15:49:24.633 INFO [stderr] Dec 19 15:49:24.633 INFO [stderr] warning: method is never used: `rotate_counterclockwise` Dec 19 15:49:24.633 INFO [stderr] --> src/interpreter.rs:32:5 Dec 19 15:49:24.633 INFO [stderr] | Dec 19 15:49:24.633 INFO [stderr] 32 | pub fn rotate_counterclockwise(&mut self) { Dec 19 15:49:24.633 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 19 15:49:24.633 INFO [stderr] Dec 19 15:49:24.633 INFO [stderr] warning: variant is never constructed: `Right` Dec 19 15:49:24.633 INFO [stderr] --> src/interpreter.rs:47:5 Dec 19 15:49:24.633 INFO [stderr] | Dec 19 15:49:24.633 INFO [stderr] 47 | Right, Dec 19 15:49:24.633 INFO [stderr] | ^^^^^ Dec 19 15:49:24.633 INFO [stderr] Dec 19 15:49:24.633 INFO [stderr] warning: method is never used: `switch` Dec 19 15:49:24.633 INFO [stderr] --> src/interpreter.rs:51:5 Dec 19 15:49:24.633 INFO [stderr] | Dec 19 15:49:24.633 INFO [stderr] 51 | pub fn switch(&mut self) { Dec 19 15:49:24.633 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ Dec 19 15:49:24.633 INFO [stderr] Dec 19 15:49:24.633 INFO [stderr] warning: method is never used: `current_block` Dec 19 15:49:24.633 INFO [stderr] --> src/interpreter.rs:93:5 Dec 19 15:49:24.633 INFO [stderr] | Dec 19 15:49:24.633 INFO [stderr] 93 | fn current_block(&self) -> HashSet { Dec 19 15:49:24.633 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 19 15:49:24.633 INFO [stderr] Dec 19 15:49:24.633 INFO [stderr] warning: method is never used: `next_coords` Dec 19 15:49:24.634 INFO [stderr] --> src/interpreter.rs:97:5 Dec 19 15:49:24.634 INFO [stderr] | Dec 19 15:49:24.634 INFO [stderr] 97 | fn next_coords(&self) -> Coords { Dec 19 15:49:24.634 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 19 15:49:24.634 INFO [stderr] Dec 19 15:49:24.634 INFO [stderr] warning: function is never used: `x_key` Dec 19 15:49:24.634 INFO [stderr] --> src/interpreter.rs:101:9 Dec 19 15:49:24.634 INFO [stderr] | Dec 19 15:49:24.634 INFO [stderr] 101 | fn x_key(&(x, _): &Coords) -> usize { Dec 19 15:49:24.634 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 19 15:49:24.634 INFO [stderr] Dec 19 15:49:24.634 INFO [stderr] warning: function is never used: `y_key` Dec 19 15:49:24.634 INFO [stderr] --> src/interpreter.rs:104:9 Dec 19 15:49:24.634 INFO [stderr] | Dec 19 15:49:24.634 INFO [stderr] 104 | fn y_key(&(_, y): &Coords) -> usize { Dec 19 15:49:24.634 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 19 15:49:24.634 INFO [stderr] Dec 19 15:49:24.634 INFO [stderr] warning: method is never used: `execute_command` Dec 19 15:49:24.634 INFO [stderr] --> src/interpreter.rs:167:5 Dec 19 15:49:24.634 INFO [stderr] | Dec 19 15:49:24.634 INFO [stderr] 167 | fn execute_command(&mut self, command: &Command) { Dec 19 15:49:24.634 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 19 15:49:24.634 INFO [stderr] Dec 19 15:49:24.634 INFO [stderr] warning: method is never used: `pointer` Dec 19 15:49:24.634 INFO [stderr] --> src/interpreter.rs:261:5 Dec 19 15:49:24.634 INFO [stderr] | Dec 19 15:49:24.634 INFO [stderr] 261 | fn pointer(&mut self, steps: i64) { Dec 19 15:49:24.634 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 19 15:49:24.634 INFO [stderr] Dec 19 15:49:24.634 INFO [stderr] warning: method is never used: `switch` Dec 19 15:49:24.634 INFO [stderr] --> src/interpreter.rs:273:5 Dec 19 15:49:24.634 INFO [stderr] | Dec 19 15:49:24.634 INFO [stderr] 273 | fn switch(&mut self, times: i64) { Dec 19 15:49:24.634 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 19 15:49:24.634 INFO [stderr] Dec 19 15:49:24.710 INFO [stderr] warning: unused variable: `codel_size` Dec 19 15:49:24.710 INFO [stderr] --> src/main.rs:23:9 Dec 19 15:49:24.710 INFO [stderr] | Dec 19 15:49:24.710 INFO [stderr] 23 | let codel_size = matches.value_of("codel_size").map(|_| unimplemented!()); Dec 19 15:49:24.710 INFO [stderr] | ^^^^^^^^^^ help: consider using `_codel_size` instead Dec 19 15:49:24.710 INFO [stderr] | Dec 19 15:49:24.710 INFO [stderr] = note: #[warn(unused_variables)] on by default Dec 19 15:49:24.710 INFO [stderr] Dec 19 15:49:24.736 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 19 15:49:24.736 INFO [stderr] --> src/main.rs:34:5 Dec 19 15:49:24.736 INFO [stderr] | Dec 19 15:49:24.736 INFO [stderr] 34 | interpreter.run(); Dec 19 15:49:24.736 INFO [stderr] | ^^^^^^^^^^^^^^^^^^ Dec 19 15:49:24.736 INFO [stderr] | Dec 19 15:49:24.736 INFO [stderr] = note: #[warn(unused_must_use)] on by default Dec 19 15:49:24.736 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 19 15:49:24.736 INFO [stderr] Dec 19 15:49:24.760 INFO [stderr] Finished dev [unoptimized + debuginfo] target(s) in 27.14s Dec 19 15:49:25.418 INFO running `"docker" "inspect" "0c7d7d1487c00b4ff0174b008c4a1b4028d474125756233ccefd3f427b1a3c79"` Dec 19 15:49:25.762 INFO running `"docker" "rm" "-f" "0c7d7d1487c00b4ff0174b008c4a1b4028d474125756233ccefd3f427b1a3c79"` Dec 19 15:49:26.101 INFO [stdout] 0c7d7d1487c00b4ff0174b008c4a1b4028d474125756233ccefd3f427b1a3c79