[INFO] updating cached repository Ragnaroek/libmaze
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Ragnaroek/libmaze
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Ragnaroek/libmaze" "work/ex/clippy-test-run/sources/stable/gh/Ragnaroek/libmaze"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/Ragnaroek/libmaze'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Ragnaroek/libmaze" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Ragnaroek/libmaze"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Ragnaroek/libmaze'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 53fa3b1e65d34f48d05946aeeace3d940a0ff81d
[INFO] sha for GitHub repo Ragnaroek/libmaze: 53fa3b1e65d34f48d05946aeeace3d940a0ff81d
[INFO] validating manifest of Ragnaroek/libmaze 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 Ragnaroek/libmaze 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 Ragnaroek/libmaze
[INFO] finished frobbing Ragnaroek/libmaze
[INFO] frobbed toml for Ragnaroek/libmaze written to work/ex/clippy-test-run/sources/stable/gh/Ragnaroek/libmaze/Cargo.toml
[INFO] started frobbing Ragnaroek/libmaze
[INFO] finished frobbing Ragnaroek/libmaze
[INFO] frobbed toml for Ragnaroek/libmaze written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Ragnaroek/libmaze/Cargo.toml
[INFO] crate Ragnaroek/libmaze 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 Ragnaroek/libmaze against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Ragnaroek/libmaze:/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 -Dclippy::into_iter_on_array" "-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] 2813f779f7aec62c02b0632c274c63d12a85202ec1a0d8f2a9f29892b76386f6
[INFO] running `"docker" "start" "-a" "2813f779f7aec62c02b0632c274c63d12a85202ec1a0d8f2a9f29892b76386f6"`
[INFO] [stderr]     Checking maze v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     write!(file, "\\documentclass{{article}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::write_with_newline)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     write!(file, "\\usepackage{{tikz}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     write!(file, "\\usepackage{{caption}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     write!(file, "\\usepackage[a4paper]{{geometry}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     write!(file, "\\addtolength{{\\oddsidemargin}}{{-2.2cm}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     write!(file, "\\addtolength{{\\evensidemargin}}{{-2.2cm}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     write!(file, "\\addtolength{{\\topmargin}}{{-1.7cm}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     write!(file, "\\begin{{document}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     write!(file, "\\pagestyle{{empty}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     write!(file, "\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     write!(file, "\\begin{{figure}}[!h]\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     write!(file, "\\captionsetup{{justification=raggedright, singlelinecheck=false, labelformat=empty}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     write!(file, "\\begin{{tikzpicture}}[scale=0.85]\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     write!(file, "\\end{{tikzpicture}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     write!(file, "\\end{{figure}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     write!(file, "\\end{{document}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/meta.rs:40:25
[INFO] [stderr]    |
[INFO] [stderr] 40 |         return Distance{width: width, height: height, dist: dist}
[INFO] [stderr]    |                         ^^^^^^^^^^^^ help: replace it with: `width`
[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/meta.rs:40:39
[INFO] [stderr]    |
[INFO] [stderr] 40 |         return Distance{width: width, height: height, dist: dist}
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^^ help: replace it with: `height`
[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: redundant field names in struct initialization
[INFO] [stderr]   --> src/meta.rs:40:55
[INFO] [stderr]    |
[INFO] [stderr] 40 |         return Distance{width: width, height: height, dist: dist}
[INFO] [stderr]    |                                                       ^^^^^^^^^^ help: replace it with: `dist`
[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 `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     write!(file, "\\documentclass{{article}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::write_with_newline)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     write!(file, "\\usepackage{{tikz}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     write!(file, "\\usepackage{{caption}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     write!(file, "\\usepackage[a4paper]{{geometry}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     write!(file, "\\addtolength{{\\oddsidemargin}}{{-2.2cm}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     write!(file, "\\addtolength{{\\evensidemargin}}{{-2.2cm}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     write!(file, "\\addtolength{{\\topmargin}}{{-1.7cm}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     write!(file, "\\begin{{document}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     write!(file, "\\pagestyle{{empty}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     write!(file, "\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     write!(file, "\\begin{{figure}}[!h]\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     write!(file, "\\captionsetup{{justification=raggedright, singlelinecheck=false, labelformat=empty}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     write!(file, "\\begin{{tikzpicture}}[scale=0.85]\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     write!(file, "\\end{{tikzpicture}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     write!(file, "\\end{{figure}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]   --> src/out.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     write!(file, "\\end{{document}}\n").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/meta.rs:40:25
[INFO] [stderr]    |
[INFO] [stderr] 40 |         return Distance{width: width, height: height, dist: dist}
[INFO] [stderr]    |                         ^^^^^^^^^^^^ help: replace it with: `width`
[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/meta.rs:40:39
[INFO] [stderr]    |
[INFO] [stderr] 40 |         return Distance{width: width, height: height, dist: dist}
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^^ help: replace it with: `height`
[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: redundant field names in struct initialization
[INFO] [stderr]   --> src/meta.rs:40:55
[INFO] [stderr]    |
[INFO] [stderr] 40 |         return Distance{width: width, height: height, dist: dist}
[INFO] [stderr]    |                                                       ^^^^^^^^^^ help: replace it with: `dist`
[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: unneeded return statement
[INFO] [stderr]   --> src/square_maze.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     return (byte & (1 << bit_ix)) != 0;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(byte & (1 << bit_ix)) != 0`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/square_maze.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |         return MazeCell{x,y};
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `MazeCell{x,y}`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/square_maze.rs:92:9
[INFO] [stderr]    |
[INFO] [stderr] 92 | /         return SquareMaze{horizontal_walls: h_walls,
[INFO] [stderr] 93 | |                           vertical_walls: v_walls,
[INFO] [stderr] 94 | |                           width,
[INFO] [stderr] 95 | |                           height,
[INFO] [stderr] 96 | |                           entry,
[INFO] [stderr] 97 | |                           exit};
[INFO] [stderr]    | |________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 92 |         SquareMaze{horizontal_walls: h_walls,
[INFO] [stderr] 93 |                           vertical_walls: v_walls,
[INFO] [stderr] 94 |                           width,
[INFO] [stderr] 95 |                           height,
[INFO] [stderr] 96 |                           entry,
[INFO] [stderr] 97 |                           exit}
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/square_maze.rs:152:9
[INFO] [stderr]     |
[INFO] [stderr] 152 |         return &ALL_NBS;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `&ALL_NBS`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]    --> src/square_maze.rs:155:48
[INFO] [stderr]     |
[INFO] [stderr] 155 |     fn check_bounds(&self, x: usize, y: usize) -> () {
[INFO] [stderr]     |                                                ^^^^^ help: remove the `-> ()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/meta.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |         return MetaData{seed: "".to_string(), dead_ends: 0, distance: Distance::new(0,0)};
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `MetaData{seed: "".to_string(), dead_ends: 0, distance: Distance::new(0,0)}`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/meta.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |         return Distance{width: width, height: height, dist: dist}
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Distance{width: width, height: height, dist: dist}`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/meta.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |         return self.dist[x][y];
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.dist[x][y]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/meta.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     return distances;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `distances`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/meta.rs:108:5
[INFO] [stderr]     |
[INFO] [stderr] 108 |     return num_walls == 3;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `num_walls == 3`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/visited.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         return Visited{width, height, visited};
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Visited{width, height, visited}`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/visited.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |         return (byte & mask) != 0;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(byte & mask) != 0`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/visited.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         return self.visited(dir_ix_x(x, n), dir_ix_y(y, n));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.visited(dir_ix_x(x, n), dir_ix_y(y, n))`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]   --> src/visited.rs:44:48
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn check_bounds(&self, x: usize, y: usize) -> () {
[INFO] [stderr]    |                                                ^^^^^ help: remove the `-> ()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/square_maze.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     return (byte & (1 << bit_ix)) != 0;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(byte & (1 << bit_ix)) != 0`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/square_maze.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |         return MazeCell{x,y};
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `MazeCell{x,y}`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/square_maze.rs:92:9
[INFO] [stderr]    |
[INFO] [stderr] 92 | /         return SquareMaze{horizontal_walls: h_walls,
[INFO] [stderr] 93 | |                           vertical_walls: v_walls,
[INFO] [stderr] 94 | |                           width,
[INFO] [stderr] 95 | |                           height,
[INFO] [stderr] 96 | |                           entry,
[INFO] [stderr] 97 | |                           exit};
[INFO] [stderr]    | |________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 92 |         SquareMaze{horizontal_walls: h_walls,
[INFO] [stderr] 93 |                           vertical_walls: v_walls,
[INFO] [stderr] 94 |                           width,
[INFO] [stderr] 95 |                           height,
[INFO] [stderr] 96 |                           entry,
[INFO] [stderr] 97 |                           exit}
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/square_maze.rs:152:9
[INFO] [stderr]     |
[INFO] [stderr] 152 |         return &ALL_NBS;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `&ALL_NBS`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]    --> src/square_maze.rs:155:48
[INFO] [stderr]     |
[INFO] [stderr] 155 |     fn check_bounds(&self, x: usize, y: usize) -> () {
[INFO] [stderr]     |                                                ^^^^^ help: remove the `-> ()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/meta.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |         return MetaData{seed: "".to_string(), dead_ends: 0, distance: Distance::new(0,0)};
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `MetaData{seed: "".to_string(), dead_ends: 0, distance: Distance::new(0,0)}`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/meta.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |         return Distance{width: width, height: height, dist: dist}
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Distance{width: width, height: height, dist: dist}`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/meta.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |         return self.dist[x][y];
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.dist[x][y]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/meta.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     return distances;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `distances`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/meta.rs:108:5
[INFO] [stderr]     |
[INFO] [stderr] 108 |     return num_walls == 3;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `num_walls == 3`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/visited.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         return Visited{width, height, visited};
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Visited{width, height, visited}`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/visited.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |         return (byte & mask) != 0;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(byte & mask) != 0`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/visited.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         return self.visited(dir_ix_x(x, n), dir_ix_y(y, n));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.visited(dir_ix_x(x, n), dir_ix_y(y, n))`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]   --> src/visited.rs:44:48
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn check_bounds(&self, x: usize, y: usize) -> () {
[INFO] [stderr]    |                                                ^^^^^ help: remove the `-> ()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/square_maze.rs:10:24
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn wall_bit_set(walls: &Vec<u8>, i: usize) -> bool {
[INFO] [stderr]    |                        ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/gen.rs:41:17
[INFO] [stderr]    |
[INFO] [stderr] 41 |                 need_to_visit = need_to_visit-1;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `need_to_visit -= 1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/out.rs:35:17
[INFO] [stderr]    |
[INFO] [stderr] 35 |                 file.write(line(x,y, x+1,y).as_bytes()).unwrap();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::unused_io_amount)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/out.rs:40:17
[INFO] [stderr]    |
[INFO] [stderr] 40 |                 file.write(line(x,y, x,y+1).as_bytes()).unwrap();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/out.rs:44:17
[INFO] [stderr]    |
[INFO] [stderr] 44 |                 file.write(line(x+1,y, x+1,y+1).as_bytes()).unwrap();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/out.rs:48:17
[INFO] [stderr]    |
[INFO] [stderr] 48 |                 file.write(line(x,y+1, x+1,y+1).as_bytes()).unwrap();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/out.rs:52:13
[INFO] [stderr]    |
[INFO] [stderr] 52 |             file.write(distance(x,y,meta.distance.distance(x,y)).as_bytes()).unwrap();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/out.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     file.write(caption(meta).as_bytes()).unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/meta.rs:77:9
[INFO] [stderr]    |
[INFO] [stderr] 77 |         dist = dist + 1;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^ help: replace it with: `dist += 1`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/meta.rs:88:17
[INFO] [stderr]    |
[INFO] [stderr] 88 |                 meta.dead_ends = meta.dead_ends + 1;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `meta.dead_ends += 1`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/meta.rs:97:9
[INFO] [stderr]    |
[INFO] [stderr] 97 |         num_walls = num_walls + 1;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `num_walls += 1`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/meta.rs:100:9
[INFO] [stderr]     |
[INFO] [stderr] 100 |         num_walls = num_walls + 1;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `num_walls += 1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/meta.rs:103:9
[INFO] [stderr]     |
[INFO] [stderr] 103 |         num_walls = num_walls + 1;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `num_walls += 1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/meta.rs:106:9
[INFO] [stderr]     |
[INFO] [stderr] 106 |         num_walls = num_walls + 1;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `num_walls += 1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `maze`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/square_maze.rs:10:24
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn wall_bit_set(walls: &Vec<u8>, i: usize) -> bool {
[INFO] [stderr]    |                        ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/gen.rs:41:17
[INFO] [stderr]    |
[INFO] [stderr] 41 |                 need_to_visit = need_to_visit-1;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `need_to_visit -= 1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/out.rs:35:17
[INFO] [stderr]    |
[INFO] [stderr] 35 |                 file.write(line(x,y, x+1,y).as_bytes()).unwrap();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::unused_io_amount)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/out.rs:40:17
[INFO] [stderr]    |
[INFO] [stderr] 40 |                 file.write(line(x,y, x,y+1).as_bytes()).unwrap();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/out.rs:44:17
[INFO] [stderr]    |
[INFO] [stderr] 44 |                 file.write(line(x+1,y, x+1,y+1).as_bytes()).unwrap();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/out.rs:48:17
[INFO] [stderr]    |
[INFO] [stderr] 48 |                 file.write(line(x,y+1, x+1,y+1).as_bytes()).unwrap();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/out.rs:52:13
[INFO] [stderr]    |
[INFO] [stderr] 52 |             file.write(distance(x,y,meta.distance.distance(x,y)).as_bytes()).unwrap();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/out.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     file.write(caption(meta).as_bytes()).unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/meta.rs:77:9
[INFO] [stderr]    |
[INFO] [stderr] 77 |         dist = dist + 1;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^ help: replace it with: `dist += 1`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/meta.rs:88:17
[INFO] [stderr]    |
[INFO] [stderr] 88 |                 meta.dead_ends = meta.dead_ends + 1;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `meta.dead_ends += 1`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/meta.rs:97:9
[INFO] [stderr]    |
[INFO] [stderr] 97 |         num_walls = num_walls + 1;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `num_walls += 1`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/meta.rs:100:9
[INFO] [stderr]     |
[INFO] [stderr] 100 |         num_walls = num_walls + 1;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `num_walls += 1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/meta.rs:103:9
[INFO] [stderr]     |
[INFO] [stderr] 103 |         num_walls = num_walls + 1;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `num_walls += 1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/meta.rs:106:9
[INFO] [stderr]     |
[INFO] [stderr] 106 |         num_walls = num_walls + 1;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `num_walls += 1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `maze`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "2813f779f7aec62c02b0632c274c63d12a85202ec1a0d8f2a9f29892b76386f6"`
[INFO] running `"docker" "rm" "-f" "2813f779f7aec62c02b0632c274c63d12a85202ec1a0d8f2a9f29892b76386f6"`
[INFO] [stdout] 2813f779f7aec62c02b0632c274c63d12a85202ec1a0d8f2a9f29892b76386f6