[INFO] updating cached repository https://github.com/Tyraeis/sudoku-solver [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 04d21d52fbcf538365ebb45d7d0ba0445c689269 [INFO] checking Tyraeis/sudoku-solver against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTyraeis%2Fsudoku-solver" "/workspace/builds/worker-6/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Tyraeis/sudoku-solver on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d [INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/Tyraeis/sudoku-solver [INFO] finished tweaking git repo https://github.com/Tyraeis/sudoku-solver [INFO] tweaked toml for git repo https://github.com/Tyraeis/sudoku-solver written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/Tyraeis/sudoku-solver already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] e6a6a40ee5a2311a33378dda10d5e0470e1722ce584a7c53ff8bd65866f844c2 [INFO] running `"docker" "start" "-a" "e6a6a40ee5a2311a33378dda10d5e0470e1722ce584a7c53ff8bd65866f844c2"` [INFO] [stderr] Compiling libc v0.2.50 [INFO] [stderr] Compiling serde v1.0.89 [INFO] [stderr] Compiling memchr v2.2.0 [INFO] [stderr] Checking csv-core v0.1.5 [INFO] [stderr] Checking csv v1.0.5 [INFO] [stderr] Checking sudoku v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:159:17 [INFO] [stderr] | [INFO] [stderr] 159 | let mut cell = board.get_mut(i).unwrap(); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:17:21 [INFO] [stderr] | [INFO] [stderr] 17 | let mut p = &mut peers[9*row + col]; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: method is never used: `unset` [INFO] [stderr] --> src/main.rs:90:5 [INFO] [stderr] | [INFO] [stderr] 90 | fn unset(&mut self, num: u8) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `print_board` [INFO] [stderr] --> src/main.rs:240:4 [INFO] [stderr] | [INFO] [stderr] 240 | fn print_board(board: &SudokuBoard) { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:159:17 [INFO] [stderr] | [INFO] [stderr] 159 | let mut cell = board.get_mut(i).unwrap(); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:17:21 [INFO] [stderr] | [INFO] [stderr] 17 | let mut p = &mut peers[9*row + col]; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: method is never used: `unset` [INFO] [stderr] --> src/main.rs:90:5 [INFO] [stderr] | [INFO] [stderr] 90 | fn unset(&mut self, num: u8) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `print_board` [INFO] [stderr] --> src/main.rs:240:4 [INFO] [stderr] | [INFO] [stderr] 240 | fn print_board(board: &SudokuBoard) { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 12.52s [INFO] running `"docker" "inspect" "e6a6a40ee5a2311a33378dda10d5e0470e1722ce584a7c53ff8bd65866f844c2"` [INFO] running `"docker" "rm" "-f" "e6a6a40ee5a2311a33378dda10d5e0470e1722ce584a7c53ff8bd65866f844c2"` [INFO] [stdout] e6a6a40ee5a2311a33378dda10d5e0470e1722ce584a7c53ff8bd65866f844c2