[INFO] updating cached repository BlockCat/rust-sudoku-solver
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/BlockCat/rust-sudoku-solver
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/BlockCat/rust-sudoku-solver" "work/ex/clippy-test-run/sources/stable/gh/BlockCat/rust-sudoku-solver"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/BlockCat/rust-sudoku-solver'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/BlockCat/rust-sudoku-solver" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/BlockCat/rust-sudoku-solver"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/BlockCat/rust-sudoku-solver'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d6825bfc2abf95ce91af756a7a44579c6a662dc8
[INFO] sha for GitHub repo BlockCat/rust-sudoku-solver: d6825bfc2abf95ce91af756a7a44579c6a662dc8
[INFO] validating manifest of BlockCat/rust-sudoku-solver on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of BlockCat/rust-sudoku-solver on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing BlockCat/rust-sudoku-solver
[INFO] finished frobbing BlockCat/rust-sudoku-solver
[INFO] frobbed toml for BlockCat/rust-sudoku-solver written to work/ex/clippy-test-run/sources/stable/gh/BlockCat/rust-sudoku-solver/Cargo.toml
[INFO] started frobbing BlockCat/rust-sudoku-solver
[INFO] finished frobbing BlockCat/rust-sudoku-solver
[INFO] frobbed toml for BlockCat/rust-sudoku-solver written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/BlockCat/rust-sudoku-solver/Cargo.toml
[INFO] crate BlockCat/rust-sudoku-solver has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting BlockCat/rust-sudoku-solver against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/BlockCat/rust-sudoku-solver:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 166aec3e50240d3afeca2eeac4330bf9c30bf9e03db29f66a51cb0b089732ce9
[INFO] running `"docker" "start" "-a" "166aec3e50240d3afeca2eeac4330bf9c30bf9e03db29f66a51cb0b089732ce9"`
[INFO] [stderr]    Compiling stacker v0.1.2
[INFO] [stderr]     Checking sudokusolver v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]  --> src/lib.rs:7:21
[INFO] [stderr]   |
[INFO] [stderr] 7 |         CellCoord { x: x, y: y }
[INFO] [stderr]   |                     ^^^^ help: replace it with: `x`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]  --> src/lib.rs:7:27
[INFO] [stderr]   |
[INFO] [stderr] 7 |         CellCoord { x: x, y: y }
[INFO] [stderr]   |                           ^^^^ help: replace it with: `y`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/lib.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |         println!("");
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]  --> src/lib.rs:7:21
[INFO] [stderr]   |
[INFO] [stderr] 7 |         CellCoord { x: x, y: y }
[INFO] [stderr]   |                     ^^^^ help: replace it with: `x`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]  --> src/lib.rs:7:27
[INFO] [stderr]   |
[INFO] [stderr] 7 |         CellCoord { x: x, y: y }
[INFO] [stderr]   |                           ^^^^ help: replace it with: `y`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/lib.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |         println!("");
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(vec_remove_item)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `sudokusolver`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(vec_remove_item)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `sudokusolver`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "166aec3e50240d3afeca2eeac4330bf9c30bf9e03db29f66a51cb0b089732ce9"`
[INFO] running `"docker" "rm" "-f" "166aec3e50240d3afeca2eeac4330bf9c30bf9e03db29f66a51cb0b089732ce9"`
[INFO] [stdout] 166aec3e50240d3afeca2eeac4330bf9c30bf9e03db29f66a51cb0b089732ce9