[INFO] cloning repository https://github.com/bisforboman/RayTracingInOneWeekend [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bisforboman/RayTracingInOneWeekend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 1) [INFO] cloning repository https://github.com/bisforboman/RayTracingInOneWeekend [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bisforboman/RayTracingInOneWeekend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend/branches/: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 2) [INFO] cloning repository https://github.com/bisforboman/RayTracingInOneWeekend [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bisforboman/RayTracingInOneWeekend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend'... [INFO] [stderr] error: copy-fd: write returned: No space left on device [INFO] [stderr] fatal: cannot copy '/usr/share/git-core/templates/hooks/update.sample' to '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend/hooks/update.sample': No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 3) [INFO] cloning repository https://github.com/bisforboman/RayTracingInOneWeekend [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bisforboman/RayTracingInOneWeekend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend'... [INFO] [stderr] error: copy-fd: write returned: No space left on device [INFO] [stderr] fatal: cannot copy '/usr/share/git-core/templates/hooks/pre-receive.sample' to '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend/hooks/pre-receive.sample': No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 4) [INFO] cloning repository https://github.com/bisforboman/RayTracingInOneWeekend [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bisforboman/RayTracingInOneWeekend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend/branches/: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 5) [INFO] cloning repository https://github.com/bisforboman/RayTracingInOneWeekend [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bisforboman/RayTracingInOneWeekend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 6) [INFO] cloning repository https://github.com/bisforboman/RayTracingInOneWeekend [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bisforboman/RayTracingInOneWeekend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 7) [INFO] cloning repository https://github.com/bisforboman/RayTracingInOneWeekend [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bisforboman/RayTracingInOneWeekend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 8) [INFO] cloning repository https://github.com/bisforboman/RayTracingInOneWeekend [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bisforboman/RayTracingInOneWeekend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 9) [INFO] cloning repository https://github.com/bisforboman/RayTracingInOneWeekend [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bisforboman/RayTracingInOneWeekend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 10) [INFO] cloning repository https://github.com/bisforboman/RayTracingInOneWeekend [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bisforboman/RayTracingInOneWeekend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 11) [INFO] cloning repository https://github.com/bisforboman/RayTracingInOneWeekend [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bisforboman/RayTracingInOneWeekend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 12) [INFO] cloning repository https://github.com/bisforboman/RayTracingInOneWeekend [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bisforboman/RayTracingInOneWeekend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 13) [INFO] cloning repository https://github.com/bisforboman/RayTracingInOneWeekend [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bisforboman/RayTracingInOneWeekend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend'... [INFO] [stderr] error: failed to write new configuration file /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend/config.lock [INFO] [stderr] fatal: could not set 'core.repositoryformatversion' to '0' [WARN] Retrying crate fetch in 3 seconds (attempt 14) [INFO] cloning repository https://github.com/bisforboman/RayTracingInOneWeekend [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bisforboman/RayTracingInOneWeekend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] f9b13db4641a00abe8e3c98ab78e3f7bb09c3e5b [INFO] checking bisforboman/RayTracingInOneWeekend against master#f21fbac535ab2c3bc50db20547f4d48477357103 for pr-143193 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbisforboman%2FRayTracingInOneWeekend" "/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/bisforboman/RayTracingInOneWeekend [INFO] finished tweaking git repo https://github.com/bisforboman/RayTracingInOneWeekend [INFO] tweaked toml for git repo https://github.com/bisforboman/RayTracingInOneWeekend written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/bisforboman/RayTracingInOneWeekend on toolchain f21fbac535ab2c3bc50db20547f4d48477357103 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f21fbac535ab2c3bc50db20547f4d48477357103" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/bisforboman/RayTracingInOneWeekend 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" "+f21fbac535ab2c3bc50db20547f4d48477357103" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+f21fbac535ab2c3bc50db20547f4d48477357103" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3c75cb3627b0545c299d069a6530e57dd1158d65cd335814664943641b574998 [INFO] running `Command { std: "docker" "start" "-a" "3c75cb3627b0545c299d069a6530e57dd1158d65cd335814664943641b574998", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3c75cb3627b0545c299d069a6530e57dd1158d65cd335814664943641b574998", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3c75cb3627b0545c299d069a6530e57dd1158d65cd335814664943641b574998", kill_on_drop: false }` [INFO] [stdout] 3c75cb3627b0545c299d069a6530e57dd1158d65cd335814664943641b574998 [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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+f21fbac535ab2c3bc50db20547f4d48477357103" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 64e17b9a8d3026c215e91a52875045ca4b508a1b99d0aa8449f07c99e4c46caf [INFO] running `Command { std: "docker" "start" "-a" "64e17b9a8d3026c215e91a52875045ca4b508a1b99d0aa8449f07c99e4c46caf", kill_on_drop: false }` [INFO] [stderr] Checking chapter2_v2 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: function `ray_color` is never used [INFO] [stdout] --> src/main.rs:14:4 [INFO] [stdout] | [INFO] [stdout] 14 | fn ray_color(r: &Ray) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `point` is never used [INFO] [stdout] --> src/vec3.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 16 | pub fn point(x: f64, y: f64, z: f64) -> Vec3 { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `vec` is never used [INFO] [stdout] --> src/vec3.rs:20:8 [INFO] [stdout] | [INFO] [stdout] 20 | pub fn vec(x: f64, y: f64, z: f64) -> Vec3 { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `cross` is never used [INFO] [stdout] --> src/vec3.rs:28:8 [INFO] [stdout] | [INFO] [stdout] 28 | pub fn cross(u: Vec3, v: Vec3) -> Vec3 { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ray_color` is never used [INFO] [stdout] --> src/main.rs:14:4 [INFO] [stdout] | [INFO] [stdout] 14 | fn ray_color(r: &Ray) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Ray` is never constructed [INFO] [stdout] --> src/ray.rs:3:12 [INFO] [stdout] | [INFO] [stdout] 3 | pub struct Ray { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ray` is never used [INFO] [stdout] --> src/ray.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | pub fn ray(orig: Vec3, dir: Vec3) -> Ray { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `point` is never used [INFO] [stdout] --> src/vec3.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 16 | pub fn point(x: f64, y: f64, z: f64) -> Vec3 { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `at` is never used [INFO] [stdout] --> src/ray.rs:14:12 [INFO] [stdout] | [INFO] [stdout] 12 | impl Ray { [INFO] [stdout] | -------- method in this implementation [INFO] [stdout] 13 | [INFO] [stdout] 14 | pub fn at(&self, t: f64) -> Vec3 { [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `vec` is never used [INFO] [stdout] --> src/vec3.rs:20:8 [INFO] [stdout] | [INFO] [stdout] 20 | pub fn vec(x: f64, y: f64, z: f64) -> Vec3 { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused arithmetic operation that must be used [INFO] [stdout] --> src/main.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 17 | (1.0 - t) * Vec3::one() + t * color(0.5, 0.7, 1.0); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 17 | let _ = (1.0 - t) * Vec3::one() + t * color(0.5, 0.7, 1.0); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `cross` is never used [INFO] [stdout] --> src/vec3.rs:28:8 [INFO] [stdout] | [INFO] [stdout] 28 | pub fn cross(u: Vec3, v: Vec3) -> Vec3 { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Ray` is never constructed [INFO] [stdout] --> src/ray.rs:3:12 [INFO] [stdout] | [INFO] [stdout] 3 | pub struct Ray { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ray` is never used [INFO] [stdout] --> src/ray.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | pub fn ray(orig: Vec3, dir: Vec3) -> Ray { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `at` is never used [INFO] [stdout] --> src/ray.rs:14:12 [INFO] [stdout] | [INFO] [stdout] 12 | impl Ray { [INFO] [stdout] | -------- method in this implementation [INFO] [stdout] 13 | [INFO] [stdout] 14 | pub fn at(&self, t: f64) -> Vec3 { [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused arithmetic operation that must be used [INFO] [stdout] --> src/main.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 17 | (1.0 - t) * Vec3::one() + t * color(0.5, 0.7, 1.0); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 17 | let _ = (1.0 - t) * Vec3::one() + t * color(0.5, 0.7, 1.0); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s [INFO] running `Command { std: "docker" "inspect" "64e17b9a8d3026c215e91a52875045ca4b508a1b99d0aa8449f07c99e4c46caf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "64e17b9a8d3026c215e91a52875045ca4b508a1b99d0aa8449f07c99e4c46caf", kill_on_drop: false }` [INFO] [stdout] 64e17b9a8d3026c215e91a52875045ca4b508a1b99d0aa8449f07c99e4c46caf