[INFO] cloning repository https://github.com/stephansama/codewa_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/stephansama/codewa_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstephansama%2Fcodewa_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstephansama%2Fcodewa_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f2037911d61cefcbd2dbb2aed99b62f9cb0d78f1
[INFO] checking stephansama/codewa_rs against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstephansama%2Fcodewa_rs" "/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/stephansama/codewa_rs 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/stephansama/codewa_rs
[INFO] finished tweaking git repo https://github.com/stephansama/codewa_rs
[INFO] tweaked toml for git repo https://github.com/stephansama/codewa_rs written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/stephansama/codewa_rs 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] e50ae3d149821435abf27304a541526ab8b552d964f942a368888e8b42ff31f3
[INFO] running `Command { std: "docker" "start" "-a" "e50ae3d149821435abf27304a541526ab8b552d964f942a368888e8b42ff31f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e50ae3d149821435abf27304a541526ab8b552d964f942a368888e8b42ff31f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e50ae3d149821435abf27304a541526ab8b552d964f942a368888e8b42ff31f3", kill_on_drop: false }`
[INFO] [stdout] e50ae3d149821435abf27304a541526ab8b552d964f942a368888e8b42ff31f3
[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] ad0d03494abc39013d07d0611efe48afb6500a811ebb1472ea9ade600bd7d7a8
[INFO] running `Command { std: "docker" "start" "-a" "ad0d03494abc39013d07d0611efe48afb6500a811ebb1472ea9ade600bd7d7a8", kill_on_drop: false }`
[INFO] [stderr]     Checking codewa_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `stray_2` is never used
[INFO] [stdout]   --> src/bin/stray_number.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn stray_2(arr: &[u32]) -> u32 {
[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: function `stray_2` is never used
[INFO] [stdout]   --> src/bin/stray_number.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn stray_2(arr: &[u32]) -> u32 {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `array_diff3` is never used
[INFO] [stdout]   --> src/bin/array_diff.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn array_diff3<T: PartialEq>(start: Vec<T>, subtract: Vec<T>) -> Vec<T> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `array_diff2` is never used
[INFO] [stdout]   --> src/bin/array_diff.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn array_diff2<T: PartialEq>(mut start: Vec<T>, subtract: Vec<T>) -> Vec<T> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `array_diff4` is never used
[INFO] [stdout]   --> src/bin/array_diff.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn array_diff4<T>(start: Vec<T>, subtract: Vec<T>) -> Vec<T>
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `array_diff` is never used
[INFO] [stdout]   --> src/bin/array_diff.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn array_diff<T: PartialEq + Copy>(start: Vec<T>, subtract: Vec<T>) -> Vec<T> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `array_diff3` is never used
[INFO] [stdout]   --> src/bin/array_diff.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn array_diff3<T: PartialEq>(start: Vec<T>, subtract: Vec<T>) -> Vec<T> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `array_diff2` is never used
[INFO] [stdout]   --> src/bin/array_diff.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn array_diff2<T: PartialEq>(mut start: Vec<T>, subtract: Vec<T>) -> Vec<T> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `array_diff4` is never used
[INFO] [stdout]   --> src/bin/array_diff.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn array_diff4<T>(start: Vec<T>, subtract: Vec<T>) -> Vec<T>
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "ad0d03494abc39013d07d0611efe48afb6500a811ebb1472ea9ade600bd7d7a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad0d03494abc39013d07d0611efe48afb6500a811ebb1472ea9ade600bd7d7a8", kill_on_drop: false }`
[INFO] [stdout] ad0d03494abc39013d07d0611efe48afb6500a811ebb1472ea9ade600bd7d7a8