Dec 19 13:30:19.721 INFO checking loovjo/neat-driver against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 13:30:19.721 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/loovjo/neat-driver:/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 13:30:20.252 INFO [stdout] 98dd1994ba30c36023c27366a48bd818826903b24ab8d0ad26053a60a5c2941e
Dec 19 13:30:20.256 INFO running `"docker" "start" "-a" "98dd1994ba30c36023c27366a48bd818826903b24ab8d0ad26053a60a5c2941e"`
Dec 19 13:30:22.670 INFO [stderr]    Compiling proc-macro2 v0.4.23
Dec 19 13:30:22.674 INFO [stderr]     Checking crossbeam-epoch v0.3.1
Dec 19 13:30:22.676 INFO [stderr]     Checking bincode v1.0.1
Dec 19 13:30:22.678 INFO [stderr]    Compiling palette v0.4.1
Dec 19 13:30:25.853 INFO [stderr]     Checking crossbeam-deque v0.2.0
Dec 19 13:30:26.864 INFO [stderr]     Checking rayon-core v1.4.1
Dec 19 13:30:28.663 INFO [stderr]     Checking rayon v1.0.3
Dec 19 13:30:29.068 INFO [stderr]    Compiling quote v0.6.10
Dec 19 13:30:30.413 INFO [stderr]    Compiling syn v0.14.9
Dec 19 13:30:30.416 INFO [stderr]    Compiling syn v0.15.20
Dec 19 13:30:38.635 INFO [stderr]     Checking ytesrev v0.2.4
Dec 19 13:30:48.606 INFO [stderr]    Compiling serde_derive v1.0.80
Dec 19 13:30:57.170 INFO [stderr]    Compiling palette_derive v0.4.1
Dec 19 13:31:16.304 INFO [stderr]     Checking NEAT-Pong v0.1.0 (/opt/crater/workdir)
Dec 19 13:31:17.108 INFO [stderr] warning: unused import: `std::mem::replace`
Dec 19 13:31:17.108 INFO [stderr]  --> src/main.rs:5:5
Dec 19 13:31:17.108 INFO [stderr]   |
Dec 19 13:31:17.108 INFO [stderr] 5 | use std::mem::replace;
Dec 19 13:31:17.108 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 19 13:31:17.108 INFO [stderr]   |
Dec 19 13:31:17.108 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 13:31:17.108 INFO [stderr] 
Dec 19 13:31:17.108 INFO [stderr] warning: unused import: `std::fs::File`
Dec 19 13:31:17.108 INFO [stderr]  --> src/game.rs:1:5
Dec 19 13:31:17.108 INFO [stderr]   |
Dec 19 13:31:17.108 INFO [stderr] 1 | use std::fs::File;
Dec 19 13:31:17.108 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 19 13:31:17.108 INFO [stderr] 
Dec 19 13:31:17.133 INFO [stderr] warning: unused import: `std::mem::replace`
Dec 19 13:31:17.133 INFO [stderr]  --> src/main.rs:5:5
Dec 19 13:31:17.133 INFO [stderr]   |
Dec 19 13:31:17.133 INFO [stderr] 5 | use std::mem::replace;
Dec 19 13:31:17.133 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 19 13:31:17.133 INFO [stderr]   |
Dec 19 13:31:17.133 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 13:31:17.133 INFO [stderr] 
Dec 19 13:31:17.140 INFO [stderr] warning: unused import: `std::fs::File`
Dec 19 13:31:17.140 INFO [stderr]  --> src/game.rs:1:5
Dec 19 13:31:17.140 INFO [stderr]   |
Dec 19 13:31:17.140 INFO [stderr] 1 | use std::fs::File;
Dec 19 13:31:17.140 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 19 13:31:17.140 INFO [stderr] 
Dec 19 13:31:17.812 INFO [stderr] warning: unreachable pattern
Dec 19 13:31:17.812 INFO [stderr]    --> src/game.rs:101:13
Dec 19 13:31:17.812 INFO [stderr]     |
Dec 19 13:31:17.812 INFO [stderr] 101 |             _ => {}
Dec 19 13:31:17.812 INFO [stderr]     |             ^
Dec 19 13:31:17.812 INFO [stderr]     |
Dec 19 13:31:17.812 INFO [stderr]     = note: #[warn(unreachable_patterns)] on by default
Dec 19 13:31:17.812 INFO [stderr] 
Dec 19 13:31:17.812 INFO [stderr] warning: unused variable: `sat_shift`
Dec 19 13:31:17.812 INFO [stderr]   --> src/car_textures.rs:42:49
Dec 19 13:31:17.812 INFO [stderr]    |
Dec 19 13:31:17.812 INFO [stderr] 42 | pub fn shift_hue(im: &PngImage, hue_shift: f32, sat_shift: f32) -> PngImage {
Dec 19 13:31:17.812 INFO [stderr]    |                                                 ^^^^^^^^^ help: consider using `_sat_shift` instead
Dec 19 13:31:17.812 INFO [stderr]    |
Dec 19 13:31:17.812 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 13:31:17.812 INFO [stderr] 
Dec 19 13:31:17.828 INFO [stderr] warning: unused variable: `ind`
Dec 19 13:31:17.828 INFO [stderr]    --> src/neat.rs:356:14
Dec 19 13:31:17.828 INFO [stderr]     |
Dec 19 13:31:17.828 INFO [stderr] 356 |         for (ind, idx) in x {
Dec 19 13:31:17.828 INFO [stderr]     |              ^^^ help: consider using `_ind` instead
Dec 19 13:31:17.828 INFO [stderr] 
Dec 19 13:31:17.828 INFO [stderr] warning: unused variable: `sp`
Dec 19 13:31:17.828 INFO [stderr]    --> src/neat.rs:380:13
Dec 19 13:31:17.828 INFO [stderr]     |
Dec 19 13:31:17.828 INFO [stderr] 380 |     for (i, sp) in species.iter().enumerate() {
Dec 19 13:31:17.828 INFO [stderr]     |             ^^ help: consider using `_sp` instead
Dec 19 13:31:17.828 INFO [stderr] 
Dec 19 13:31:17.828 INFO [stderr] warning: unused variable: `i`
Dec 19 13:31:17.828 INFO [stderr]    --> src/neat.rs:417:13
Dec 19 13:31:17.829 INFO [stderr]     |
Dec 19 13:31:17.829 INFO [stderr] 417 |         for i in 0..num_offspring {
Dec 19 13:31:17.829 INFO [stderr]     |             ^ help: consider using `_i` instead
Dec 19 13:31:17.829 INFO [stderr] 
Dec 19 13:31:17.829 INFO [stderr] warning: unused variable: `i`
Dec 19 13:31:17.829 INFO [stderr]   --> src/main.rs:57:13
Dec 19 13:31:17.829 INFO [stderr]    |
Dec 19 13:31:17.829 INFO [stderr] 57 |         for i in 0..POP_SIZE {
Dec 19 13:31:17.829 INFO [stderr]    |             ^ help: consider using `_i` instead
Dec 19 13:31:17.829 INFO [stderr] 
Dec 19 13:31:17.829 INFO [stderr] warning: unused variable: `settings`
Dec 19 13:31:17.829 INFO [stderr]    --> src/game.rs:138:70
Dec 19 13:31:17.829 INFO [stderr]     |
Dec 19 13:31:17.829 INFO [stderr] 138 |     fn draw(&self, canvas: &mut Canvas<Window>, position: &Position, settings: DrawSettings) {
Dec 19 13:31:17.829 INFO [stderr]     |                                                                      ^^^^^^^^ help: consider using `_settings` instead
Dec 19 13:31:17.829 INFO [stderr] 
Dec 19 13:31:17.829 INFO [stderr] warning: unused variable: `a`
Dec 19 13:31:17.829 INFO [stderr]   --> src/map.rs:24:21
Dec 19 13:31:17.829 INFO [stderr]    |
Dec 19 13:31:17.829 INFO [stderr] 24 |                 let a = image.data[4 * idx + 3];
Dec 19 13:31:17.829 INFO [stderr]    |                     ^ help: consider using `_a` instead
Dec 19 13:31:17.829 INFO [stderr] 
Dec 19 13:31:17.829 INFO [stderr] warning: unused variable: `i`
Dec 19 13:31:17.829 INFO [stderr]    --> src/neat.rs:179:21
Dec 19 13:31:17.829 INFO [stderr]     |
Dec 19 13:31:17.829 INFO [stderr] 179 |         'outer: for i in 0..40 {
Dec 19 13:31:17.829 INFO [stderr]     |                     ^ help: consider using `_i` instead
Dec 19 13:31:17.829 INFO [stderr] 
Dec 19 13:31:17.829 INFO [stderr] warning: unused variable: `i`
Dec 19 13:31:17.829 INFO [stderr]    --> src/main.rs:176:13
Dec 19 13:31:17.829 INFO [stderr]     |
Dec 19 13:31:17.829 INFO [stderr] 176 |         for i in 0..self.speed_mult {
Dec 19 13:31:17.829 INFO [stderr]     |             ^ help: consider using `_i` instead
Dec 19 13:31:17.829 INFO [stderr] 
Dec 19 13:31:17.872 INFO [stderr] warning: unreachable pattern
Dec 19 13:31:17.872 INFO [stderr]    --> src/game.rs:101:13
Dec 19 13:31:17.872 INFO [stderr]     |
Dec 19 13:31:17.872 INFO [stderr] 101 |             _ => {}
Dec 19 13:31:17.872 INFO [stderr]     |             ^
Dec 19 13:31:17.872 INFO [stderr]     |
Dec 19 13:31:17.872 INFO [stderr]     = note: #[warn(unreachable_patterns)] on by default
Dec 19 13:31:17.872 INFO [stderr] 
Dec 19 13:31:17.872 INFO [stderr] warning: unused variable: `sat_shift`
Dec 19 13:31:17.873 INFO [stderr]   --> src/car_textures.rs:42:49
Dec 19 13:31:17.873 INFO [stderr]    |
Dec 19 13:31:17.873 INFO [stderr] 42 | pub fn shift_hue(im: &PngImage, hue_shift: f32, sat_shift: f32) -> PngImage {
Dec 19 13:31:17.873 INFO [stderr]    |                                                 ^^^^^^^^^ help: consider using `_sat_shift` instead
Dec 19 13:31:17.873 INFO [stderr]    |
Dec 19 13:31:17.873 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 13:31:17.873 INFO [stderr] 
Dec 19 13:31:17.873 INFO [stderr] warning: unused variable: `ind`
Dec 19 13:31:17.873 INFO [stderr]    --> src/neat.rs:356:14
Dec 19 13:31:17.873 INFO [stderr]     |
Dec 19 13:31:17.873 INFO [stderr] 356 |         for (ind, idx) in x {
Dec 19 13:31:17.873 INFO [stderr]     |              ^^^ help: consider using `_ind` instead
Dec 19 13:31:17.873 INFO [stderr] 
Dec 19 13:31:17.873 INFO [stderr] warning: unused variable: `sp`
Dec 19 13:31:17.873 INFO [stderr]    --> src/neat.rs:380:13
Dec 19 13:31:17.873 INFO [stderr]     |
Dec 19 13:31:17.873 INFO [stderr] 380 |     for (i, sp) in species.iter().enumerate() {
Dec 19 13:31:17.873 INFO [stderr]     |             ^^ help: consider using `_sp` instead
Dec 19 13:31:17.873 INFO [stderr] 
Dec 19 13:31:17.873 INFO [stderr] warning: unused variable: `i`
Dec 19 13:31:17.873 INFO [stderr]    --> src/neat.rs:417:13
Dec 19 13:31:17.873 INFO [stderr]     |
Dec 19 13:31:17.873 INFO [stderr] 417 |         for i in 0..num_offspring {
Dec 19 13:31:17.873 INFO [stderr]     |             ^ help: consider using `_i` instead
Dec 19 13:31:17.873 INFO [stderr] 
Dec 19 13:31:17.873 INFO [stderr] warning: unused variable: `i`
Dec 19 13:31:17.873 INFO [stderr]   --> src/main.rs:57:13
Dec 19 13:31:17.873 INFO [stderr]    |
Dec 19 13:31:17.873 INFO [stderr] 57 |         for i in 0..POP_SIZE {
Dec 19 13:31:17.873 INFO [stderr]    |             ^ help: consider using `_i` instead
Dec 19 13:31:17.873 INFO [stderr] 
Dec 19 13:31:17.873 INFO [stderr] warning: unused variable: `settings`
Dec 19 13:31:17.873 INFO [stderr]    --> src/game.rs:138:70
Dec 19 13:31:17.873 INFO [stderr]     |
Dec 19 13:31:17.873 INFO [stderr] 138 |     fn draw(&self, canvas: &mut Canvas<Window>, position: &Position, settings: DrawSettings) {
Dec 19 13:31:17.873 INFO [stderr]     |                                                                      ^^^^^^^^ help: consider using `_settings` instead
Dec 19 13:31:17.873 INFO [stderr] 
Dec 19 13:31:17.873 INFO [stderr] warning: unused variable: `a`
Dec 19 13:31:17.873 INFO [stderr]   --> src/map.rs:24:21
Dec 19 13:31:17.873 INFO [stderr]    |
Dec 19 13:31:17.873 INFO [stderr] 24 |                 let a = image.data[4 * idx + 3];
Dec 19 13:31:17.873 INFO [stderr]    |                     ^ help: consider using `_a` instead
Dec 19 13:31:17.873 INFO [stderr] 
Dec 19 13:31:17.873 INFO [stderr] warning: unused variable: `i`
Dec 19 13:31:17.873 INFO [stderr]    --> src/neat.rs:179:21
Dec 19 13:31:17.873 INFO [stderr]     |
Dec 19 13:31:17.873 INFO [stderr] 179 |         'outer: for i in 0..40 {
Dec 19 13:31:17.873 INFO [stderr]     |                     ^ help: consider using `_i` instead
Dec 19 13:31:17.873 INFO [stderr] 
Dec 19 13:31:17.873 INFO [stderr] warning: unused variable: `i`
Dec 19 13:31:17.873 INFO [stderr]    --> src/main.rs:176:13
Dec 19 13:31:17.873 INFO [stderr]     |
Dec 19 13:31:17.873 INFO [stderr] 176 |         for i in 0..self.speed_mult {
Dec 19 13:31:17.873 INFO [stderr]     |             ^ help: consider using `_i` instead
Dec 19 13:31:17.873 INFO [stderr] 
Dec 19 13:31:17.932 INFO [stderr] warning: variable does not need to be mutable
Dec 19 13:31:17.932 INFO [stderr]    --> src/main.rs:271:13
Dec 19 13:31:17.932 INFO [stderr]     |
Dec 19 13:31:17.932 INFO [stderr] 271 |         let mut file = File::create(SAVE_PATH).unwrap();
Dec 19 13:31:17.932 INFO [stderr]     |             ----^^^^
Dec 19 13:31:17.932 INFO [stderr]     |             |
Dec 19 13:31:17.932 INFO [stderr]     |             help: remove this `mut`
Dec 19 13:31:17.932 INFO [stderr]     |
Dec 19 13:31:17.932 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 13:31:17.932 INFO [stderr] 
Dec 19 13:31:18.000 INFO [stderr] warning: variable does not need to be mutable
Dec 19 13:31:18.000 INFO [stderr]    --> src/main.rs:271:13
Dec 19 13:31:18.000 INFO [stderr]     |
Dec 19 13:31:18.000 INFO [stderr] 271 |         let mut file = File::create(SAVE_PATH).unwrap();
Dec 19 13:31:18.000 INFO [stderr]     |             ----^^^^
Dec 19 13:31:18.000 INFO [stderr]     |             |
Dec 19 13:31:18.000 INFO [stderr]     |             help: remove this `mut`
Dec 19 13:31:18.000 INFO [stderr]     |
Dec 19 13:31:18.000 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 13:31:18.000 INFO [stderr] 
Dec 19 13:31:18.272 INFO [stderr] warning: field is never used: `showing`
Dec 19 13:31:18.272 INFO [stderr]    --> src/main.rs:103:5
Dec 19 13:31:18.272 INFO [stderr]     |
Dec 19 13:31:18.272 INFO [stderr] 103 |     showing: Option<Vec<usize>>,
Dec 19 13:31:18.272 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:31:18.272 INFO [stderr]     |
Dec 19 13:31:18.272 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 13:31:18.272 INFO [stderr] 
Dec 19 13:31:18.272 INFO [stderr] warning: crate `NEAT_Pong` should have a snake case name such as `neat_pong`
Dec 19 13:31:18.272 INFO [stderr]   |
Dec 19 13:31:18.272 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 19 13:31:18.272 INFO [stderr] 
Dec 19 13:31:18.280 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 13:31:18.280 INFO [stderr]    --> src/game.rs:194:9
Dec 19 13:31:18.280 INFO [stderr]     |
Dec 19 13:31:18.280 INFO [stderr] 194 |         texture.update(None, car_texture.data.as_slice(), 4 * car_texture.width);
Dec 19 13:31:18.280 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:31:18.280 INFO [stderr]     |
Dec 19 13:31:18.280 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 13:31:18.280 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 13:31:18.280 INFO [stderr] 
Dec 19 13:31:18.292 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 13:31:18.292 INFO [stderr]    --> src/neat.rs:263:9
Dec 19 13:31:18.292 INFO [stderr]     |
Dec 19 13:31:18.292 INFO [stderr] 263 |         write!(f, "{}", sres);
Dec 19 13:31:18.292 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:31:18.292 INFO [stderr]     |
Dec 19 13:31:18.292 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 13:31:18.292 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 19 13:31:18.292 INFO [stderr] 
Dec 19 13:31:18.292 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 13:31:18.292 INFO [stderr]    --> src/neat.rs:265:9
Dec 19 13:31:18.292 INFO [stderr]     |
Dec 19 13:31:18.292 INFO [stderr] 265 | /         Command::new("dot")
Dec 19 13:31:18.293 INFO [stderr] 266 | |             .arg("-Tsvg")
Dec 19 13:31:18.293 INFO [stderr] 267 | |             .arg(path)
Dec 19 13:31:18.293 INFO [stderr] 268 | |             .arg("-o")
Dec 19 13:31:18.293 INFO [stderr] 269 | |             .arg(format!("/tmp/graphs/{}.svg", name))
Dec 19 13:31:18.293 INFO [stderr] 270 | |             .output();
Dec 19 13:31:18.293 INFO [stderr]     | |______________________^
Dec 19 13:31:18.293 INFO [stderr]     |
Dec 19 13:31:18.293 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 13:31:18.306 INFO [stderr] 
Dec 19 13:31:18.435 INFO [stderr] warning: field is never used: `showing`
Dec 19 13:31:18.435 INFO [stderr]    --> src/main.rs:103:5
Dec 19 13:31:18.435 INFO [stderr]     |
Dec 19 13:31:18.435 INFO [stderr] 103 |     showing: Option<Vec<usize>>,
Dec 19 13:31:18.435 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:31:18.435 INFO [stderr]     |
Dec 19 13:31:18.435 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 13:31:18.435 INFO [stderr] 
Dec 19 13:31:18.435 INFO [stderr] warning: crate `NEAT_Pong` should have a snake case name such as `neat_pong`
Dec 19 13:31:18.435 INFO [stderr]   |
Dec 19 13:31:18.435 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 19 13:31:18.435 INFO [stderr] 
Dec 19 13:31:18.438 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 13:31:18.438 INFO [stderr]    --> src/game.rs:194:9
Dec 19 13:31:18.438 INFO [stderr]     |
Dec 19 13:31:18.438 INFO [stderr] 194 |         texture.update(None, car_texture.data.as_slice(), 4 * car_texture.width);
Dec 19 13:31:18.438 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:31:18.438 INFO [stderr]     |
Dec 19 13:31:18.438 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 13:31:18.439 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 13:31:18.439 INFO [stderr] 
Dec 19 13:31:18.441 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 13:31:18.441 INFO [stderr]    --> src/neat.rs:263:9
Dec 19 13:31:18.441 INFO [stderr]     |
Dec 19 13:31:18.441 INFO [stderr] 263 |         write!(f, "{}", sres);
Dec 19 13:31:18.441 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^
Dec 19 13:31:18.441 INFO [stderr]     |
Dec 19 13:31:18.441 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 13:31:18.441 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 19 13:31:18.441 INFO [stderr] 
Dec 19 13:31:18.441 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 13:31:18.441 INFO [stderr]    --> src/neat.rs:265:9
Dec 19 13:31:18.441 INFO [stderr]     |
Dec 19 13:31:18.441 INFO [stderr] 265 | /         Command::new("dot")
Dec 19 13:31:18.441 INFO [stderr] 266 | |             .arg("-Tsvg")
Dec 19 13:31:18.441 INFO [stderr] 267 | |             .arg(path)
Dec 19 13:31:18.441 INFO [stderr] 268 | |             .arg("-o")
Dec 19 13:31:18.441 INFO [stderr] 269 | |             .arg(format!("/tmp/graphs/{}.svg", name))
Dec 19 13:31:18.441 INFO [stderr] 270 | |             .output();
Dec 19 13:31:18.441 INFO [stderr]     | |______________________^
Dec 19 13:31:18.441 INFO [stderr]     |
Dec 19 13:31:18.441 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 13:31:18.441 INFO [stderr] 
Dec 19 13:31:18.504 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 56.00s
Dec 19 13:31:19.518 INFO running `"docker" "inspect" "98dd1994ba30c36023c27366a48bd818826903b24ab8d0ad26053a60a5c2941e"`
Dec 19 13:31:19.858 INFO running `"docker" "rm" "-f" "98dd1994ba30c36023c27366a48bd818826903b24ab8d0ad26053a60a5c2941e"`
Dec 19 13:31:20.172 INFO [stdout] 98dd1994ba30c36023c27366a48bd818826903b24ab8d0ad26053a60a5c2941e