[INFO] updating cached repository https://github.com/kunalchandan/ToyTracer
[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] a310fdc3f6c3bae86929e1e10c567ef826f520b5
[INFO] checking kunalchandan/ToyTracer against master#6250d56355d72264ece721e8d0dc95b16a6824b1 for pr-68350
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkunalchandan%2FToyTracer" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kunalchandan/ToyTracer on toolchain 6250d56355d72264ece721e8d0dc95b16a6824b1
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/kunalchandan/ToyTracer
[INFO] finished tweaking git repo https://github.com/kunalchandan/ToyTracer
[INFO] tweaked toml for git repo https://github.com/kunalchandan/ToyTracer written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/kunalchandan/ToyTracer already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "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] a22fea12b073d54f6d4c74c84fe5c052cf531b5e592db34bbb71b5f422608024
[INFO] running `"docker" "start" "-a" "a22fea12b073d54f6d4c74c84fe5c052cf531b5e592db34bbb71b5f422608024"`
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]     Checking raw-window-handle v0.3.2
[INFO] [stderr]     Checking draw_state v0.8.0
[INFO] [stderr]    Compiling gfx_gl v0.6.0
[INFO] [stderr]     Checking png v0.15.1
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]     Checking wayland-commons v0.21.13
[INFO] [stderr]     Checking rulinalg v0.4.2
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]     Checking piston2d-graphics v0.35.0
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking gfx_core v0.9.2
[INFO] [stderr]     Checking wayland-client v0.21.13
[INFO] [stderr]     Checking jpeg-decoder v0.1.16
[INFO] [stderr]     Checking alga v0.9.2
[INFO] [stderr]     Checking wayland-protocols v0.21.13
[INFO] [stderr]     Checking image v0.22.3
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking nalgebra v0.19.0
[INFO] [stderr]    Compiling serde_derive v1.0.103
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.6
[INFO] [stderr]     Checking imageproc v0.19.2
[INFO] [stderr]     Checking piston2d-opengl_graphics v0.70.0
[INFO] [stderr]     Checking winit v0.19.5
[INFO] [stderr]     Checking glutin v0.21.2
[INFO] [stderr]     Checking gfx v0.18.2
[INFO] [stderr]     Checking gfx_device_gl v0.16.2
[INFO] [stderr]     Checking pistoncore-input v0.28.0
[INFO] [stderr]     Checking piston-gfx_texture v0.40.0
[INFO] [stderr]     Checking pistoncore-window v0.44.0
[INFO] [stderr]     Checking piston2d-gfx_graphics v0.66.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.49.0
[INFO] [stderr]     Checking pistoncore-glutin_window v0.63.0
[INFO] [stderr]     Checking piston v0.49.0
[INFO] [stderr]     Checking piston_window v0.105.0
[INFO] [stderr]     Checking toy_tracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `crate::world::Traceable`
[INFO] [stderr]  --> src/ray.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::world::Traceable;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pos`
[INFO] [stderr]    --> src/main.rs:218:25
[INFO] [stderr]     |
[INFO] [stderr] 218 |         e.mouse_cursor(|pos| {
[INFO] [stderr]     |                         ^^^ help: consider prefixing with an underscore: `_pos`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]    --> src/main.rs:254:21
[INFO] [stderr]     |
[INFO] [stderr] 254 |         if let Some(r) = e.render_args() {
[INFO] [stderr]     |                     ^ help: consider prefixing with an underscore: `_r`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/main.rs:86:26
[INFO] [stderr]    |
[INFO] [stderr] 86 |     fn update(&mut self, args: &UpdateArgs) {
[INFO] [stderr]    |                          ^^^^ help: consider prefixing with an underscore: `_args`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `to_trace` is assigned to, but never used
[INFO] [stderr]    --> src/main.rs:104:21
[INFO] [stderr]     |
[INFO] [stderr] 104 |             let mut to_trace: &Box<dyn Traceable> = self.objects[0].borrow();
[INFO] [stderr]     |                     ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: consider using `_to_trace` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `to_trace` is never read
[INFO] [stderr]    --> src/main.rs:109:21
[INFO] [stderr]     |
[INFO] [stderr] 109 |                     to_trace = obj;
[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: unused variable: `cn`
[INFO] [stderr]    --> src/main.rs:127:13
[INFO] [stderr]     |
[INFO] [stderr] 127 |         let cn = nl::Vector3::new(CAM_X, CAM_Y, CAM_Z) + (SCR_Z * nl::Vector3::new(CAM_P.sin() * CAM_T.cos(),
[INFO] [stderr]     |             ^^ help: consider prefixing with an underscore: `_cn`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `br`
[INFO] [stderr]    --> src/main.rs:145:13
[INFO] [stderr]     |
[INFO] [stderr] 145 |         let br = nl::Vector3::new(CAM_X, CAM_Y, CAM_Z) +
[INFO] [stderr]     |             ^^ help: consider prefixing with an underscore: `_br`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pix_colour`
[INFO] [stderr]    --> src/main.rs:162:21
[INFO] [stderr]     |
[INFO] [stderr] 162 |                 let pix_colour = self.recursive_trace(r);
[INFO] [stderr]     |                     ^^^^^^^^^^ help: consider prefixing with an underscore: `_pix_colour`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]   --> src/world.rs:59:22
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fn normal(&self, r: Ray) -> Ray {
[INFO] [stderr]    |                      ^ help: consider prefixing with an underscore: `_r`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::world::Traceable`
[INFO] [stderr]  --> src/ray.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::world::Traceable;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pos`
[INFO] [stderr]    --> src/main.rs:218:25
[INFO] [stderr]     |
[INFO] [stderr] 218 |         e.mouse_cursor(|pos| {
[INFO] [stderr]     |                         ^^^ help: consider prefixing with an underscore: `_pos`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]    --> src/main.rs:254:21
[INFO] [stderr]     |
[INFO] [stderr] 254 |         if let Some(r) = e.render_args() {
[INFO] [stderr]     |                     ^ help: consider prefixing with an underscore: `_r`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/main.rs:86:26
[INFO] [stderr]    |
[INFO] [stderr] 86 |     fn update(&mut self, args: &UpdateArgs) {
[INFO] [stderr]    |                          ^^^^ help: consider prefixing with an underscore: `_args`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `to_trace` is assigned to, but never used
[INFO] [stderr]    --> src/main.rs:104:21
[INFO] [stderr]     |
[INFO] [stderr] 104 |             let mut to_trace: &Box<dyn Traceable> = self.objects[0].borrow();
[INFO] [stderr]     |                     ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: consider using `_to_trace` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `to_trace` is never read
[INFO] [stderr]    --> src/main.rs:109:21
[INFO] [stderr]     |
[INFO] [stderr] 109 |                     to_trace = obj;
[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: unused variable: `cn`
[INFO] [stderr]    --> src/main.rs:127:13
[INFO] [stderr]     |
[INFO] [stderr] 127 |         let cn = nl::Vector3::new(CAM_X, CAM_Y, CAM_Z) + (SCR_Z * nl::Vector3::new(CAM_P.sin() * CAM_T.cos(),
[INFO] [stderr]     |             ^^ help: consider prefixing with an underscore: `_cn`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `br`
[INFO] [stderr]    --> src/main.rs:145:13
[INFO] [stderr]     |
[INFO] [stderr] 145 |         let br = nl::Vector3::new(CAM_X, CAM_Y, CAM_Z) +
[INFO] [stderr]     |             ^^ help: consider prefixing with an underscore: `_br`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pix_colour`
[INFO] [stderr]    --> src/main.rs:162:21
[INFO] [stderr]     |
[INFO] [stderr] 162 |                 let pix_colour = self.recursive_trace(r);
[INFO] [stderr]     |                     ^^^^^^^^^^ help: consider prefixing with an underscore: `_pix_colour`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]   --> src/world.rs:59:22
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fn normal(&self, r: Ray) -> Ray {
[INFO] [stderr]    |                      ^ help: consider prefixing with an underscore: `_r`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 46s
[INFO] running `"docker" "inspect" "a22fea12b073d54f6d4c74c84fe5c052cf531b5e592db34bbb71b5f422608024"`
[INFO] running `"docker" "rm" "-f" "a22fea12b073d54f6d4c74c84fe5c052cf531b5e592db34bbb71b5f422608024"`
[INFO] [stdout] a22fea12b073d54f6d4c74c84fe5c052cf531b5e592db34bbb71b5f422608024