[INFO] cloning repository https://github.com/nickx720/sudoku-solver [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nickx720/sudoku-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnickx720%2Fsudoku-solver", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnickx720%2Fsudoku-solver'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] bdeab72f78dc1e7c5f28b1ee6fcf5c51572a02c0 [INFO] checking nickx720/sudoku-solver against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnickx720%2Fsudoku-solver" "/workspace/builds/worker-1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/nickx720/sudoku-solver on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/nickx720/sudoku-solver [INFO] finished tweaking git repo https://github.com/nickx720/sudoku-solver [INFO] tweaked toml for git repo https://github.com/nickx720/sudoku-solver written to /workspace/builds/worker-1/source/Cargo.toml [INFO] crate git repo https://github.com/nickx720/sudoku-solver already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 144176fc025b430d065c9e5ec47e152c14630f9302ff21c43ec78da20916aeeb [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" "144176fc025b430d065c9e5ec47e152c14630f9302ff21c43ec78da20916aeeb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "144176fc025b430d065c9e5ec47e152c14630f9302ff21c43ec78da20916aeeb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "144176fc025b430d065c9e5ec47e152c14630f9302ff21c43ec78da20916aeeb", kill_on_drop: false }` [INFO] [stdout] 144176fc025b430d065c9e5ec47e152c14630f9302ff21c43ec78da20916aeeb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] eb373c55259c04644806d551c3ca547b0d18461e97f40b84f681beb362bdc248 [INFO] running `Command { std: "docker" "start" "-a" "eb373c55259c04644806d551c3ca547b0d18461e97f40b84f681beb362bdc248", kill_on_drop: false }` [INFO] [stderr] Checking sudoku v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: value passed to `row` is never read [INFO] [stdout] --> src/main.rs:12:37 [INFO] [stdout] | [INFO] [stdout] 12 | fn number_unassigned(&self, mut row: usize, mut col: usize) -> Vec { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value passed to `col` is never read [INFO] [stdout] --> src/main.rs:12:53 [INFO] [stdout] | [INFO] [stdout] 12 | fn number_unassigned(&self, mut row: usize, mut col: usize) -> Vec { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value passed to `row` is never read [INFO] [stdout] --> src/main.rs:12:37 [INFO] [stdout] | [INFO] [stdout] 12 | fn number_unassigned(&self, mut row: usize, mut col: usize) -> Vec { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value passed to `col` is never read [INFO] [stdout] --> src/main.rs:12:53 [INFO] [stdout] | [INFO] [stdout] 12 | fn number_unassigned(&self, mut row: usize, mut col: usize) -> Vec { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.37s [INFO] running `Command { std: "docker" "inspect" "eb373c55259c04644806d551c3ca547b0d18461e97f40b84f681beb362bdc248", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "eb373c55259c04644806d551c3ca547b0d18461e97f40b84f681beb362bdc248", kill_on_drop: false }` [INFO] [stdout] eb373c55259c04644806d551c3ca547b0d18461e97f40b84f681beb362bdc248