[INFO] updating cached repository https://github.com/maxmelander/raytracer
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5c496eb37d76c2e6c6b7bdd2c7b7ac1e203da9cf
[INFO] checking maxmelander/raytracer against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxmelander%2Fraytracer" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/maxmelander/raytracer on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/maxmelander/raytracer
[INFO] finished tweaking git repo https://github.com/maxmelander/raytracer
[INFO] tweaked toml for git repo https://github.com/maxmelander/raytracer written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/maxmelander/raytracer already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cbeb1c3d95d652f7d8b93f90c4e68e5459700b1ac5cf3d3772895656f7fb6ff9
[INFO] running `"docker" "start" "-a" "cbeb1c3d95d652f7d8b93f90c4e68e5459700b1ac5cf3d3772895656f7fb6ff9"`
[INFO] [stderr]     Checking raytracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/tuple.rs:154:9
[INFO] [stderr]     |
[INFO] [stderr] 154 | /         (is_equal(self.x, other.x)
[INFO] [stderr] 155 | |          && is_equal(self.y, other.y)
[INFO] [stderr] 156 | |          && is_equal(self.z, other.z)
[INFO] [stderr] 157 | |          && is_equal(self.w, other.w))
[INFO] [stderr]     | |______________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 154 |         is_equal(self.x, other.x)
[INFO] [stderr] 155 |          && is_equal(self.y, other.y)
[INFO] [stderr] 156 |          && is_equal(self.z, other.z)
[INFO] [stderr] 157 |          && is_equal(self.w, other.w)
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/color.rs:97:9
[INFO] [stderr]    |
[INFO] [stderr] 97 | /         (is_equal(self.r(), other.r())
[INFO] [stderr] 98 | |          && is_equal(self.g(), other.g())
[INFO] [stderr] 99 | |          && is_equal(self.b(), other.b()))
[INFO] [stderr]    | |__________________________________________^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 97 |         is_equal(self.r(), other.r())
[INFO] [stderr] 98 |          && is_equal(self.g(), other.g())
[INFO] [stderr] 99 |          && is_equal(self.b(), other.b())
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::color::Color`
[INFO] [stderr]  --> src/canvas_tests.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use super::color::Color;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::tuple::Tuple`
[INFO] [stderr]  --> src/matrix_tests.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use super::tuple::Tuple;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::f64::consts::PI`
[INFO] [stderr]  --> src/matrix_tests.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::f64::consts::PI;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::ray::*`
[INFO] [stderr]  --> src/ray_tests.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use super::ray::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::tuple::*`
[INFO] [stderr]  --> src/ray_tests.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use super::tuple::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/tuple.rs:154:9
[INFO] [stderr]     |
[INFO] [stderr] 154 | /         (is_equal(self.x, other.x)
[INFO] [stderr] 155 | |          && is_equal(self.y, other.y)
[INFO] [stderr] 156 | |          && is_equal(self.z, other.z)
[INFO] [stderr] 157 | |          && is_equal(self.w, other.w))
[INFO] [stderr]     | |______________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 154 |         is_equal(self.x, other.x)
[INFO] [stderr] 155 |          && is_equal(self.y, other.y)
[INFO] [stderr] 156 |          && is_equal(self.z, other.z)
[INFO] [stderr] 157 |          && is_equal(self.w, other.w)
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/color.rs:97:9
[INFO] [stderr]    |
[INFO] [stderr] 97 | /         (is_equal(self.r(), other.r())
[INFO] [stderr] 98 | |          && is_equal(self.g(), other.g())
[INFO] [stderr] 99 | |          && is_equal(self.b(), other.b()))
[INFO] [stderr]    | |__________________________________________^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 97 |         is_equal(self.r(), other.r())
[INFO] [stderr] 98 |          && is_equal(self.g(), other.g())
[INFO] [stderr] 99 |          && is_equal(self.b(), other.b())
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/canvas_tests.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     canvas.write_pixel(2, 3, red);
[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: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/canvas_tests.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     canvas.write_pixel(0, 0, c1);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/canvas_tests.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     canvas.write_pixel(2, 1, c2);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/canvas_tests.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     canvas.write_pixel(4, 2, c3);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.44s
[INFO] running `"docker" "inspect" "cbeb1c3d95d652f7d8b93f90c4e68e5459700b1ac5cf3d3772895656f7fb6ff9"`
[INFO] running `"docker" "rm" "-f" "cbeb1c3d95d652f7d8b93f90c4e68e5459700b1ac5cf3d3772895656f7fb6ff9"`
[INFO] [stdout] cbeb1c3d95d652f7d8b93f90c4e68e5459700b1ac5cf3d3772895656f7fb6ff9