[INFO] cloning repository https://github.com/timraymond/rust_tracer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/timraymond/rust_tracer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimraymond%2Frust_tracer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimraymond%2Frust_tracer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 08b0a027169f2bb1bbf7863b218f1c125d429f10
[INFO] checking timraymond/rust_tracer against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimraymond%2Frust_tracer" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/timraymond/rust_tracer on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/timraymond/rust_tracer
[INFO] finished tweaking git repo https://github.com/timraymond/rust_tracer
[INFO] tweaked toml for git repo https://github.com/timraymond/rust_tracer written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/timraymond/rust_tracer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/jobserver:/tmp/crater-runner-fifo:rw,Z" "-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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d6db27b437c77a5168f9878dcd7a195b5d7f143dbaf8b3a6f672510d1d9bc472
[INFO] running `Command { std: "docker" "start" "-a" "d6db27b437c77a5168f9878dcd7a195b5d7f143dbaf8b3a6f672510d1d9bc472", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6db27b437c77a5168f9878dcd7a195b5d7f143dbaf8b3a6f672510d1d9bc472", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6db27b437c77a5168f9878dcd7a195b5d7f143dbaf8b3a6f672510d1d9bc472", kill_on_drop: false }`
[INFO] [stdout] d6db27b437c77a5168f9878dcd7a195b5d7f143dbaf8b3a6f672510d1d9bc472
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/jobserver:/tmp/crater-runner-fifo:rw,Z" "-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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTUP_TOOLCHAIN=3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "-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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/tmp/crater-runner-fifo/jobserver-crater-fwd" "/opt/rustwide/cargo-home/bin/cargo" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 81fe7ff7b2646154afc6398fc7c2ef70f3c52ccbd4dcfc9ce34c418846d6e46b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "81fe7ff7b2646154afc6398fc7c2ef70f3c52ccbd4dcfc9ce34c418846d6e46b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking raytracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/vec3.rs:319:9
[INFO] [stdout]     |
[INFO] [stdout] 319 | /         (self.0*self.0 +
[INFO] [stdout] 320 | |          self.1*self.1 +
[INFO] [stdout] 321 | |          self.2*self.2)
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 319 |         self.0*self.0 +
[INFO] [stdout] 320 |          self.1*self.1 +
[INFO] [stdout] 321 |          self.2*self.2
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `w`
[INFO] [stdout]   --> src/vec3.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     w: Vec3,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `random`
[INFO] [stdout]    --> src/vec3.rs:293:12
[INFO] [stdout]     |
[INFO] [stdout] 293 |     pub fn random(lower: f64, upper: f64) -> Vec3 {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/vec3.rs:319:9
[INFO] [stdout]     |
[INFO] [stdout] 319 | /         (self.0*self.0 +
[INFO] [stdout] 320 | |          self.1*self.1 +
[INFO] [stdout] 321 | |          self.2*self.2)
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 319 |         self.0*self.0 +
[INFO] [stdout] 320 |          self.1*self.1 +
[INFO] [stdout] 321 |          self.2*self.2
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `w`
[INFO] [stdout]   --> src/vec3.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     w: Vec3,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unit`
[INFO] [stdout]    --> src/vec3.rs:289:12
[INFO] [stdout]     |
[INFO] [stdout] 289 |     pub fn unit() -> Vec3 {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `random`
[INFO] [stdout]    --> src/vec3.rs:293:12
[INFO] [stdout]     |
[INFO] [stdout] 293 |     pub fn random(lower: f64, upper: f64) -> Vec3 {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.35s
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "81fe7ff7b2646154afc6398fc7c2ef70f3c52ccbd4dcfc9ce34c418846d6e46b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81fe7ff7b2646154afc6398fc7c2ef70f3c52ccbd4dcfc9ce34c418846d6e46b", kill_on_drop: false }`
[INFO] [stdout] 81fe7ff7b2646154afc6398fc7c2ef70f3c52ccbd4dcfc9ce34c418846d6e46b