[INFO] cloning repository https://github.com/EstebanBorai/grokking-algorithms-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/EstebanBorai/grokking-algorithms-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEstebanBorai%2Fgrokking-algorithms-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEstebanBorai%2Fgrokking-algorithms-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] c622c9e603415d915dc2b79cf1d892bd9ab901c4 [INFO] checking EstebanBorai/grokking-algorithms-rust against master#f5f33ec0e0455eefa72fc5567eb1280a4d5ee206 for pr-83312 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEstebanBorai%2Fgrokking-algorithms-rust" "/workspace/builds/worker-9/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/EstebanBorai/grokking-algorithms-rust on toolchain f5f33ec0e0455eefa72fc5567eb1280a4d5ee206 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/EstebanBorai/grokking-algorithms-rust [INFO] finished tweaking git repo https://github.com/EstebanBorai/grokking-algorithms-rust [INFO] tweaked toml for git repo https://github.com/EstebanBorai/grokking-algorithms-rust written to /workspace/builds/worker-9/source/Cargo.toml [INFO] crate git repo https://github.com/EstebanBorai/grokking-algorithms-rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 0e07aa05f051a3ae894c7ace794399d8112c7574dfe117f3e665b7c7f025ccf0 [INFO] running `Command { std: "docker" "start" "-a" "0e07aa05f051a3ae894c7ace794399d8112c7574dfe117f3e665b7c7f025ccf0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0e07aa05f051a3ae894c7ace794399d8112c7574dfe117f3e665b7c7f025ccf0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0e07aa05f051a3ae894c7ace794399d8112c7574dfe117f3e665b7c7f025ccf0", kill_on_drop: false }` [INFO] [stdout] 0e07aa05f051a3ae894c7ace794399d8112c7574dfe117f3e665b7c7f025ccf0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 0ac68c1f44f7c2af4b93fa84331eac89e70d3301ffb6f78e3a9ddc952a5e9b2e [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" "0ac68c1f44f7c2af4b93fa84331eac89e70d3301ffb6f78e3a9ddc952a5e9b2e", kill_on_drop: false }` [INFO] [stderr] Checking grokking-algorithms v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/queue.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 16 | fn new() -> Self { [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: `enqueue` [INFO] [stdout] --> src/queue.rs:21:8 [INFO] [stdout] | [INFO] [stdout] 21 | fn enqueue(&mut self, item: T) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `dequeue` [INFO] [stdout] --> src/queue.rs:26:8 [INFO] [stdout] | [INFO] [stdout] 26 | fn dequeue(&mut self) -> T { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `length` [INFO] [stdout] --> src/queue.rs:31:8 [INFO] [stdout] | [INFO] [stdout] 31 | fn length(&self) -> usize { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `peek` [INFO] [stdout] --> src/queue.rs:38:8 [INFO] [stdout] | [INFO] [stdout] 38 | fn peek(&self) -> Option<&T> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `is_empty` [INFO] [stdout] --> src/queue.rs:44:8 [INFO] [stdout] | [INFO] [stdout] 44 | fn is_empty(&self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/stack.rs:16:12 [INFO] [stdout] | [INFO] [stdout] 16 | pub fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `push` [INFO] [stdout] --> src/stack.rs:21:12 [INFO] [stdout] | [INFO] [stdout] 21 | pub fn push(&mut self, element: T) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `pop` [INFO] [stdout] --> src/stack.rs:28:12 [INFO] [stdout] | [INFO] [stdout] 28 | pub fn pop(&mut self) -> Option { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `length` [INFO] [stdout] --> src/stack.rs:33:12 [INFO] [stdout] | [INFO] [stdout] 33 | pub fn length(&self) -> usize { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `peek` [INFO] [stdout] --> src/stack.rs:40:12 [INFO] [stdout] | [INFO] [stdout] 40 | pub fn peek(&self) -> Option<&T> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `is_empty` [INFO] [stdout] --> src/stack.rs:45:12 [INFO] [stdout] | [INFO] [stdout] 45 | pub fn is_empty(&self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.30s [INFO] running `Command { std: "docker" "inspect" "0ac68c1f44f7c2af4b93fa84331eac89e70d3301ffb6f78e3a9ddc952a5e9b2e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0ac68c1f44f7c2af4b93fa84331eac89e70d3301ffb6f78e3a9ddc952a5e9b2e", kill_on_drop: false }` [INFO] [stdout] 0ac68c1f44f7c2af4b93fa84331eac89e70d3301ffb6f78e3a9ddc952a5e9b2e