[INFO] cloning repository supervitas/path-tracer
[INFO] running `"git" "clone" "--bare" "git://github.com/supervitas/path-tracer.git" "work/cache/sources/gh/supervitas/path-tracer"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/supervitas/path-tracer'...
[INFO] running `"git" "clone" "work/cache/sources/gh/supervitas/path-tracer" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/supervitas/path-tracer"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/supervitas/path-tracer'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/supervitas/path-tracer" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/supervitas/path-tracer"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/supervitas/path-tracer'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 879d1c9ae268ab7bdc6a650d2623d59759f5f425
[INFO] sha for GitHub repo supervitas/path-tracer: 879d1c9ae268ab7bdc6a650d2623d59759f5f425
[INFO] validating manifest of supervitas/path-tracer on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of supervitas/path-tracer on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing supervitas/path-tracer
[INFO] finished frobbing supervitas/path-tracer
[INFO] frobbed toml for supervitas/path-tracer written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/supervitas/path-tracer/Cargo.toml
[INFO] started frobbing supervitas/path-tracer
[INFO] finished frobbing supervitas/path-tracer
[INFO] frobbed toml for supervitas/path-tracer written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/supervitas/path-tracer/Cargo.toml
[INFO] crate supervitas/path-tracer already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking supervitas/path-tracer against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-3/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/supervitas/path-tracer:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 455046e986c2a2f98d5e7731c326cf6947c1298d5b92d0b4701181c5943ed457
[INFO] running `"docker" "start" "-a" "455046e986c2a2f98d5e7731c326cf6947c1298d5b92d0b4701181c5943ed457"`
[INFO] [stderr]    Compiling num-integer v0.1.40
[INFO] [stderr]    Compiling num-iter v0.1.38
[INFO] [stderr]    Compiling sdl2-sys v0.32.6
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]    Compiling gl_generator v0.6.1
[INFO] [stderr]    Compiling sdl2 v0.32.2
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]    Compiling gl v0.6.5
[INFO] [stderr]     Checking PathTracer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use rand::Rng;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::pixels::PixelFormatEnum`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use sdl2::pixels::PixelFormatEnum;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::pixels::Color`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use sdl2::pixels::Color;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::rect::Rect`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use sdl2::rect::Rect;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::pixels::Color`
[INFO] [stderr]  --> src/gl/display.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use sdl2::pixels::Color;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::event::Event`
[INFO] [stderr]  --> src/gl/display.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use sdl2::event::Event;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::keyboard::Keycode`
[INFO] [stderr]  --> src/gl/display.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use sdl2::keyboard::Keycode;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Sdl`, `VideoSubsystem`
[INFO] [stderr]   --> src/gl/display.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | use sdl2::{Sdl, VideoSubsystem};
[INFO] [stderr]    |            ^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::mouse::SystemCursor::No`
[INFO] [stderr]   --> src/gl/display.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use sdl2::mouse::SystemCursor::No;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::primitives::renderable::Renderable`
[INFO] [stderr]  --> src/renderer/camera.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::primitives::renderable::Renderable;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use rand::Rng;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::pixels::PixelFormatEnum`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use sdl2::pixels::PixelFormatEnum;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::pixels::Color`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use sdl2::pixels::Color;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::rect::Rect`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use sdl2::rect::Rect;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::pixels::Color`
[INFO] [stderr]  --> src/gl/display.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use sdl2::pixels::Color;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::event::Event`
[INFO] [stderr]  --> src/gl/display.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use sdl2::event::Event;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::keyboard::Keycode`
[INFO] [stderr]  --> src/gl/display.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use sdl2::keyboard::Keycode;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Sdl`, `VideoSubsystem`
[INFO] [stderr]   --> src/gl/display.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | use sdl2::{Sdl, VideoSubsystem};
[INFO] [stderr]    |            ^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::mouse::SystemCursor::No`
[INFO] [stderr]   --> src/gl/display.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use sdl2::mouse::SystemCursor::No;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::primitives::renderable::Renderable`
[INFO] [stderr]  --> src/renderer/camera.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::primitives::renderable::Renderable;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `camera`
[INFO] [stderr]   --> src/main.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let camera = Camera::new(65f32, 0.1, 1000f32, Vector3::new(0.,0.,15.), Vector3::new(0.,0.,1.));
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_camera`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `camera`
[INFO] [stderr]   --> src/main.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let camera = Camera::new(65f32, 0.1, 1000f32, Vector3::new(0.,0.,15.), Vector3::new(0.,0.,1.));
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_camera`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let mut cube: Cube = Cube::new();
[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:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let mut cube: Cube = Cube::new();
[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: method is never used: `dot`
[INFO] [stderr]   --> src/math/vec3.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn dot(&self, v2: Vector3<S>) -> S {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `width`
[INFO] [stderr]  --> src/primitives/cube.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     width: f64,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `height`
[INFO] [stderr]  --> src/primitives/cube.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     height: f64,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `depth`
[INFO] [stderr]  --> src/primitives/cube.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     depth: f64,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `position`
[INFO] [stderr]  --> src/primitives/cube.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     position: math::vec3::Vector3<f64>
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `background`
[INFO] [stderr]  --> src/renderer/scene.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     background: Vector3<f32>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `position`
[INFO] [stderr]  --> src/renderer/camera.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     position: Vector3<f32>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `direction`
[INFO] [stderr]  --> src/renderer/camera.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     direction: Vector3<f32>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `fov`
[INFO] [stderr]  --> src/renderer/camera.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fov: f32,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `z_near`
[INFO] [stderr]  --> src/renderer/camera.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     z_near: f32,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `z_far`
[INFO] [stderr]  --> src/renderer/camera.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     z_far: f32,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dot`
[INFO] [stderr]   --> src/math/vec3.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn dot(&self, v2: Vector3<S>) -> S {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `width`
[INFO] [stderr]  --> src/primitives/cube.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     width: f64,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `height`
[INFO] [stderr]  --> src/primitives/cube.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     height: f64,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `depth`
[INFO] [stderr]  --> src/primitives/cube.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     depth: f64,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `position`
[INFO] [stderr]  --> src/primitives/cube.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     position: math::vec3::Vector3<f64>
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `background`
[INFO] [stderr]  --> src/renderer/scene.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     background: Vector3<f32>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] warning: crate `PathTracer` should have a snake case name
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `position`
[INFO] [stderr]   |
[INFO] [stderr]  --> src/renderer/camera.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     position: Vector3<f32>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `direction`
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr]  --> src/renderer/camera.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     direction: Vector3<f32>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]   = help: convert the identifier to snake case: `path_tracer`
[INFO] [stderr] warning: field is never used: `fov`
[INFO] [stderr] 
[INFO] [stderr]  --> src/renderer/camera.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fov: f32,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `z_near`
[INFO] [stderr]  --> src/renderer/camera.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     z_near: f32,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `z_far`
[INFO] [stderr]  --> src/renderer/camera.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     z_far: f32,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |         display.show(&mut canvas);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: crate `PathTracer` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `path_tracer`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |         display.show(&mut canvas);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.29s
[INFO] running `"docker" "inspect" "455046e986c2a2f98d5e7731c326cf6947c1298d5b92d0b4701181c5943ed457"`
[INFO] running `"docker" "rm" "-f" "455046e986c2a2f98d5e7731c326cf6947c1298d5b92d0b4701181c5943ed457"`
[INFO] [stdout] 455046e986c2a2f98d5e7731c326cf6947c1298d5b92d0b4701181c5943ed457