[INFO] cloning repository https://github.com/Phlosioneer/polyomino-generator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Phlosioneer/polyomino-generator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhlosioneer%2Fpolyomino-generator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhlosioneer%2Fpolyomino-generator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0b91eeb3f43129deb20c8d844d8da46d8e24b5f6
[INFO] checking Phlosioneer/polyomino-generator against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhlosioneer%2Fpolyomino-generator" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Phlosioneer/polyomino-generator on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Phlosioneer/polyomino-generator
[INFO] finished tweaking git repo https://github.com/Phlosioneer/polyomino-generator
[INFO] tweaked toml for git repo https://github.com/Phlosioneer/polyomino-generator written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Phlosioneer/polyomino-generator 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 504a9693c3ced4b8e442758438917c67bcc4ba4fdee902e105f0918764a5419a
[INFO] running `Command { std: "docker" "start" "-a" "504a9693c3ced4b8e442758438917c67bcc4ba4fdee902e105f0918764a5419a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "504a9693c3ced4b8e442758438917c67bcc4ba4fdee902e105f0918764a5419a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "504a9693c3ced4b8e442758438917c67bcc4ba4fdee902e105f0918764a5419a", kill_on_drop: false }`
[INFO] [stdout] 504a9693c3ced4b8e442758438917c67bcc4ba4fdee902e105f0918764a5419a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aceb2f7b02b2fbc02c9b83600089e551384ca79bbf3c606cd6dc6605b03fed7b
[INFO] running `Command { std: "docker" "start" "-a" "aceb2f7b02b2fbc02c9b83600089e551384ca79bbf3c606cd6dc6605b03fed7b", kill_on_drop: false }`
[INFO] [stderr]     Checking tinyvec v1.2.0
[INFO] [stderr]     Checking polyomino-generator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated items `from_flips`, `from_index`, `mirror_horizontal`, `mirror_vertical`, and `rotate` are never used
[INFO] [stdout]   --> src/symmetry.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Symmetry {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn from_flips(horizontal: bool, vertical: bool, diagonal: bool) -> Symmetry {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn from_index(index: usize) -> Symmetry {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     pub fn mirror_horizontal(mut self) -> Symmetry {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 71 |     pub fn mirror_vertical(mut self) -> Symmetry {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83 |     pub fn rotate(mut self, mut clockwise: i8) -> Symmetry {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `from_index`, `mirror_horizontal`, `mirror_vertical`, and `rotate` are never used
[INFO] [stdout]   --> src/symmetry.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Symmetry {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn from_index(index: usize) -> Symmetry {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     pub fn mirror_horizontal(mut self) -> Symmetry {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 71 |     pub fn mirror_vertical(mut self) -> Symmetry {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83 |     pub fn rotate(mut self, mut clockwise: i8) -> Symmetry {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "aceb2f7b02b2fbc02c9b83600089e551384ca79bbf3c606cd6dc6605b03fed7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aceb2f7b02b2fbc02c9b83600089e551384ca79bbf3c606cd6dc6605b03fed7b", kill_on_drop: false }`
[INFO] [stdout] aceb2f7b02b2fbc02c9b83600089e551384ca79bbf3c606cd6dc6605b03fed7b