[INFO] cloning repository https://github.com/sobersanta/hello-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sobersanta/hello-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsobersanta%2Fhello-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsobersanta%2Fhello-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bd8603fac2b7eb596032770604f15c4c6a65fa72
[INFO] checking sobersanta/hello-rust against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsobersanta%2Fhello-rust" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sobersanta/hello-rust on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sobersanta/hello-rust
[INFO] finished tweaking git repo https://github.com/sobersanta/hello-rust
[INFO] tweaked toml for git repo https://github.com/sobersanta/hello-rust written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/sobersanta/hello-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1547d694287f8c166a8ffb8dc3ba265a79c9edfaafb0b936fb33ee6d58b862dd
[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" "1547d694287f8c166a8ffb8dc3ba265a79c9edfaafb0b936fb33ee6d58b862dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1547d694287f8c166a8ffb8dc3ba265a79c9edfaafb0b936fb33ee6d58b862dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1547d694287f8c166a8ffb8dc3ba265a79c9edfaafb0b936fb33ee6d58b862dd", kill_on_drop: false }`
[INFO] [stdout] 1547d694287f8c166a8ffb8dc3ba265a79c9edfaafb0b936fb33ee6d58b862dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe16ba226823f9683067fc1e12e1d0da3e2d52483383a6e2e9169c50c77fc376
[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" "fe16ba226823f9683067fc1e12e1d0da3e2d52483383a6e2e9169c50c77fc376", kill_on_drop: false }`
[INFO] [stderr]     Checking hello-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `Cacher`
[INFO] [stdout]  --> src/exercises/cacher/mod.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Cacher<T, V, R>
[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: `new`
[INFO] [stdout]   --> src/exercises/cacher/mod.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn new(calculation: T) -> Cacher<T, V, R> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `value`
[INFO] [stdout]   --> src/exercises/cacher/mod.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn value(&mut self, arg: &V) -> &R {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]   --> src/exercises/is_robot_bounded.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Solution;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/exercises/is_robot_bounded.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn new(x: i32, y: i32) -> Point {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `plus`
[INFO] [stdout]   --> src/exercises/is_robot_bounded.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn plus(&mut self, other: &Point) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rotate_90_cw`
[INFO] [stdout]   --> src/exercises/is_robot_bounded.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn rotate_90_cw(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rotate_90_ccw`
[INFO] [stdout]   --> src/exercises/is_robot_bounded.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn rotate_90_ccw(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `NORTH`
[INFO] [stdout]   --> src/exercises/is_robot_bounded.rs:58:1
[INFO] [stdout]    |
[INFO] [stdout] 58 | const NORTH: Point = Point { x: 0, y: 1 };
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ZERO`
[INFO] [stdout]   --> src/exercises/is_robot_bounded.rs:59:1
[INFO] [stdout]    |
[INFO] [stdout] 59 | const ZERO: Point = Point { x: 0, y: 1 };
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_robot_bounded`
[INFO] [stdout]   --> src/exercises/is_robot_bounded.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn is_robot_bounded(instructions: String) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.65s
[INFO] running `Command { std: "docker" "inspect" "fe16ba226823f9683067fc1e12e1d0da3e2d52483383a6e2e9169c50c77fc376", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe16ba226823f9683067fc1e12e1d0da3e2d52483383a6e2e9169c50c77fc376", kill_on_drop: false }`
[INFO] [stdout] fe16ba226823f9683067fc1e12e1d0da3e2d52483383a6e2e9169c50c77fc376