[INFO] cloning repository https://github.com/otdavies/RustTracer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/otdavies/RustTracer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fotdavies%2FRustTracer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fotdavies%2FRustTracer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] de848800e8d1f27e2c987cb0bbe9336cdd0a0382
[INFO] checking otdavies/RustTracer against master#12f35ad39ed3e39df4d953c46d4f6cc6c82adc96 for pr-155299-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fotdavies%2FRustTracer" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/otdavies/RustTracer
[INFO] finished tweaking git repo https://github.com/otdavies/RustTracer
[INFO] tweaked toml for git repo https://github.com/otdavies/RustTracer written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/otdavies/RustTracer on toolchain 12f35ad39ed3e39df4d953c46d4f6cc6c82adc96
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+12f35ad39ed3e39df4d953c46d4f6cc6c82adc96" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/otdavies/RustTracer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+12f35ad39ed3e39df4d953c46d4f6cc6c82adc96" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+12f35ad39ed3e39df4d953c46d4f6cc6c82adc96" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 243d12ae39a36f2c640db4bf5c73e2c81b10d1fffe224edd3af26d1125281e3b
[INFO] running `Command { std: "docker" "start" "-a" "243d12ae39a36f2c640db4bf5c73e2c81b10d1fffe224edd3af26d1125281e3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "243d12ae39a36f2c640db4bf5c73e2c81b10d1fffe224edd3af26d1125281e3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "243d12ae39a36f2c640db4bf5c73e2c81b10d1fffe224edd3af26d1125281e3b", kill_on_drop: false }`
[INFO] [stdout] 243d12ae39a36f2c640db4bf5c73e2c81b10d1fffe224edd3af26d1125281e3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+12f35ad39ed3e39df4d953c46d4f6cc6c82adc96" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 07f2ec3dd40dce8a85bab6329479c60f2cf56ba642a49243e54bc7fda3af1b6e
[INFO] running `Command { std: "docker" "start" "-a" "07f2ec3dd40dce8a85bab6329479c60f2cf56ba642a49243e54bc7fda3af1b6e", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_tracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `cross` is never used
[INFO] [stdout]   --> src/vec3.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Vec3 {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn cross(&self, other: &Vec3) -> Vec3 {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `cross` is never used
[INFO] [stdout]   --> src/vec3.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Vec3 {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn cross(&self, other: &Vec3) -> Vec3 {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:121:13
[INFO] [stdout]     |
[INFO] [stdout] 121 |             writeln!(&mut body, "{} {} {}", red, green, blue);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 121 |             let _ = writeln!(&mut body, "{} {} {}", red, green, blue);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:121:13
[INFO] [stdout]     |
[INFO] [stdout] 121 |             writeln!(&mut body, "{} {} {}", red, green, blue);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 121 |             let _ = writeln!(&mut body, "{} {} {}", red, green, blue);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "07f2ec3dd40dce8a85bab6329479c60f2cf56ba642a49243e54bc7fda3af1b6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07f2ec3dd40dce8a85bab6329479c60f2cf56ba642a49243e54bc7fda3af1b6e", kill_on_drop: false }`
[INFO] [stdout] 07f2ec3dd40dce8a85bab6329479c60f2cf56ba642a49243e54bc7fda3af1b6e
