[INFO] updating cached repository Spcktr/2017_advent
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Spcktr/2017_advent
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Spcktr/2017_advent" "work/ex/clippy-test-run/sources/stable/gh/Spcktr/2017_advent"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/Spcktr/2017_advent'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Spcktr/2017_advent" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Spcktr/2017_advent"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Spcktr/2017_advent'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 01ab475abae2908e6756ec31dedc8e5ce2a71198
[INFO] sha for GitHub repo Spcktr/2017_advent: 01ab475abae2908e6756ec31dedc8e5ce2a71198
[INFO] validating manifest of Spcktr/2017_advent 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 Spcktr/2017_advent 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 Spcktr/2017_advent
[INFO] finished frobbing Spcktr/2017_advent
[INFO] frobbed toml for Spcktr/2017_advent written to work/ex/clippy-test-run/sources/stable/gh/Spcktr/2017_advent/Cargo.toml
[INFO] started frobbing Spcktr/2017_advent
[INFO] finished frobbing Spcktr/2017_advent
[INFO] frobbed toml for Spcktr/2017_advent written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Spcktr/2017_advent/Cargo.toml
[INFO] crate Spcktr/2017_advent 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 Spcktr/2017_advent 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/Spcktr/2017_advent:/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] d9c26cff110dcad6d5d1bf61eb6ea7bc56b6fdc386d62af38b5f757f6be5a980
[INFO] running `"docker" "start" "-a" "d9c26cff110dcad6d5d1bf61eb6ea7bc56b6fdc386d62af38b5f757f6be5a980"`
[INFO] [stderr]    Compiling unindent v0.1.2
[INFO] [stderr]    Compiling indoc-impl v0.2.3
[INFO] [stderr]     Checking indoc v0.2.3
[INFO] [stderr]     Checking advent v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: this is a decimal constant
[INFO] [stderr]   --> src/main.rs:29:10
[INFO] [stderr]    |
[INFO] [stderr] 29 |         (01, 1) => println!("{}", day01::no1()),
[INFO] [stderr]    |          ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::zero_prefixed_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zero_prefixed_literal
[INFO] [stderr] help: if you mean to use a decimal constant, remove the `0` to remove confusion
[INFO] [stderr]    |
[INFO] [stderr] 29 |         (1, 1) => println!("{}", day01::no1()),
[INFO] [stderr]    |          ^
[INFO] [stderr] help: if you mean to use an octal constant, use `0o`
[INFO] [stderr]    |
[INFO] [stderr] 29 |         (0o1, 1) => println!("{}", day01::no1()),
[INFO] [stderr]    |          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this is a decimal constant
[INFO] [stderr]   --> src/main.rs:30:10
[INFO] [stderr]    |
[INFO] [stderr] 30 |         (01, 2) => println!("{}", day01::no2()),
[INFO] [stderr]    |          ^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zero_prefixed_literal
[INFO] [stderr] help: if you mean to use a decimal constant, remove the `0` to remove confusion
[INFO] [stderr]    |
[INFO] [stderr] 30 |         (1, 2) => println!("{}", day01::no2()),
[INFO] [stderr]    |          ^
[INFO] [stderr] help: if you mean to use an octal constant, use `0o`
[INFO] [stderr]    |
[INFO] [stderr] 30 |         (0o1, 2) => println!("{}", day01::no2()),
[INFO] [stderr]    |          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this is a decimal constant
[INFO] [stderr]   --> src/main.rs:31:10
[INFO] [stderr]    |
[INFO] [stderr] 31 |         (02, 1) => println!("{}", day02::no1()),
[INFO] [stderr]    |          ^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zero_prefixed_literal
[INFO] [stderr] help: if you mean to use a decimal constant, remove the `0` to remove confusion
[INFO] [stderr]    |
[INFO] [stderr] 31 |         (2, 1) => println!("{}", day02::no1()),
[INFO] [stderr]    |          ^
[INFO] [stderr] help: if you mean to use an octal constant, use `0o`
[INFO] [stderr]    |
[INFO] [stderr] 31 |         (0o2, 1) => println!("{}", day02::no1()),
[INFO] [stderr]    |          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this is a decimal constant
[INFO] [stderr]   --> src/main.rs:32:10
[INFO] [stderr]    |
[INFO] [stderr] 32 |         (02, 2) => println!("{}", day02::no2()),
[INFO] [stderr]    |          ^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zero_prefixed_literal
[INFO] [stderr] help: if you mean to use a decimal constant, remove the `0` to remove confusion
[INFO] [stderr]    |
[INFO] [stderr] 32 |         (2, 2) => println!("{}", day02::no2()),
[INFO] [stderr]    |          ^
[INFO] [stderr] help: if you mean to use an octal constant, use `0o`
[INFO] [stderr]    |
[INFO] [stderr] 32 |         (0o2, 2) => println!("{}", day02::no2()),
[INFO] [stderr]    |          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this is a decimal constant
[INFO] [stderr]   --> src/main.rs:33:10
[INFO] [stderr]    |
[INFO] [stderr] 33 |         (03, 1) => println!("{}", day03::no1()),
[INFO] [stderr]    |          ^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zero_prefixed_literal
[INFO] [stderr] help: if you mean to use a decimal constant, remove the `0` to remove confusion
[INFO] [stderr]    |
[INFO] [stderr] 33 |         (3, 1) => println!("{}", day03::no1()),
[INFO] [stderr]    |          ^
[INFO] [stderr] help: if you mean to use an octal constant, use `0o`
[INFO] [stderr]    |
[INFO] [stderr] 33 |         (0o3, 1) => println!("{}", day03::no1()),
[INFO] [stderr]    |          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this is a decimal constant
[INFO] [stderr]   --> src/main.rs:34:10
[INFO] [stderr]    |
[INFO] [stderr] 34 |         (03, 2) => println!("{}", day03::no2()),
[INFO] [stderr]    |          ^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zero_prefixed_literal
[INFO] [stderr] help: if you mean to use a decimal constant, remove the `0` to remove confusion
[INFO] [stderr]    |
[INFO] [stderr] 34 |         (3, 2) => println!("{}", day03::no2()),
[INFO] [stderr]    |          ^
[INFO] [stderr] help: if you mean to use an octal constant, use `0o`
[INFO] [stderr]    |
[INFO] [stderr] 34 |         (0o3, 2) => println!("{}", day03::no2()),
[INFO] [stderr]    |          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `mov`
[INFO] [stderr]    --> src/helper.rs:156:3
[INFO] [stderr]     |
[INFO] [stderr] 156 |   pub fn mov(self, direction: Direction) -> Coordinate<T> {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Left`
[INFO] [stderr]    --> src/helper.rs:180:3
[INFO] [stderr]     |
[INFO] [stderr] 180 |   Left,
[INFO] [stderr]     |   ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Up`
[INFO] [stderr]    --> src/helper.rs:181:3
[INFO] [stderr]     |
[INFO] [stderr] 181 |   Up,
[INFO] [stderr]     |   ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Right`
[INFO] [stderr]    --> src/helper.rs:182:3
[INFO] [stderr]     |
[INFO] [stderr] 182 |   Right,
[INFO] [stderr]     |   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Down`
[INFO] [stderr]    --> src/helper.rs:183:3
[INFO] [stderr]     |
[INFO] [stderr] 183 |   Down,
[INFO] [stderr]     |   ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `all`
[INFO] [stderr]    --> src/helper.rs:187:3
[INFO] [stderr]     |
[INFO] [stderr] 187 |   pub fn all() -> Vec<Direction> {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `left`
[INFO] [stderr]    --> src/helper.rs:196:3
[INFO] [stderr]     |
[INFO] [stderr] 196 |   pub fn left(self) -> Direction {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reverse`
[INFO] [stderr]    --> src/helper.rs:205:3
[INFO] [stderr]     |
[INFO] [stderr] 205 |   pub fn reverse(self) -> Direction {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `right`
[INFO] [stderr]    --> src/helper.rs:209:3
[INFO] [stderr]     |
[INFO] [stderr] 209 |   pub fn right(self) -> Direction {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this lifetime isn't used in the function definition
[INFO] [stderr]   --> src/helper.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn knot<'a, I>(
[INFO] [stderr]    |         ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::extra_unused_lifetimes)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#extra_unused_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]   --> src/day01.rs:41:18
[INFO] [stderr]    |
[INFO] [stderr] 41 |       return s + (byte - b'0') as u32;
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(byte - b'0')`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: Matching on `Some` with `ok()` is redundant
[INFO] [stderr]   --> src/main.rs:26:3
[INFO] [stderr]    |
[INFO] [stderr] 26 | /   if let Some(day) = args[1].parse::<i32>().ok() {
[INFO] [stderr] 27 | |     if let Some(no) = args[2].parse::<i32>().ok() {
[INFO] [stderr] 28 | |       match (day, no) {
[INFO] [stderr] 29 | |         (01, 1) => println!("{}", day01::no1()),
[INFO] [stderr] ...  |
[INFO] [stderr] 43 | |     exit(1);
[INFO] [stderr] 44 | |   }
[INFO] [stderr]    | |___^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::if_let_some_result)] on by default
[INFO] [stderr]    = help: Consider matching on `Ok(day)` and removing the call to `ok` instead
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#if_let_some_result
[INFO] [stderr] 
[INFO] [stderr] warning: Matching on `Some` with `ok()` is redundant
[INFO] [stderr]   --> src/main.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 | /     if let Some(no) = args[2].parse::<i32>().ok() {
[INFO] [stderr] 28 | |       match (day, no) {
[INFO] [stderr] 29 | |         (01, 1) => println!("{}", day01::no1()),
[INFO] [stderr] 30 | |         (01, 2) => println!("{}", day01::no2()),
[INFO] [stderr] ...  |
[INFO] [stderr] 39 | |       exit(1);
[INFO] [stderr] 40 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: Consider matching on `Ok(no)` and removing the call to `ok` instead
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#if_let_some_result
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/day03.rs:31:16
[INFO] [stderr]    |
[INFO] [stderr] 31 |     assert_eq!(330785, no2());
[INFO] [stderr]    |                ^^^^^^ help: consider: `330_785`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: this is a decimal constant
[INFO] [stderr]   --> src/main.rs:29:10
[INFO] [stderr]    |
[INFO] [stderr] 29 |         (01, 1) => println!("{}", day01::no1()),
[INFO] [stderr]    |          ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::zero_prefixed_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zero_prefixed_literal
[INFO] [stderr] help: if you mean to use a decimal constant, remove the `0` to remove confusion
[INFO] [stderr]    |
[INFO] [stderr] 29 |         (1, 1) => println!("{}", day01::no1()),
[INFO] [stderr]    |          ^
[INFO] [stderr] help: if you mean to use an octal constant, use `0o`
[INFO] [stderr]    |
[INFO] [stderr] 29 |         (0o1, 1) => println!("{}", day01::no1()),
[INFO] [stderr]    |          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this is a decimal constant
[INFO] [stderr]   --> src/main.rs:30:10
[INFO] [stderr]    |
[INFO] [stderr] 30 |         (01, 2) => println!("{}", day01::no2()),
[INFO] [stderr]    |          ^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zero_prefixed_literal
[INFO] [stderr] help: if you mean to use a decimal constant, remove the `0` to remove confusion
[INFO] [stderr]    |
[INFO] [stderr] 30 |         (1, 2) => println!("{}", day01::no2()),
[INFO] [stderr]    |          ^
[INFO] [stderr] help: if you mean to use an octal constant, use `0o`
[INFO] [stderr]    |
[INFO] [stderr] 30 |         (0o1, 2) => println!("{}", day01::no2()),
[INFO] [stderr]    |          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this is a decimal constant
[INFO] [stderr]   --> src/main.rs:31:10
[INFO] [stderr]    |
[INFO] [stderr] 31 |         (02, 1) => println!("{}", day02::no1()),
[INFO] [stderr]    |          ^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zero_prefixed_literal
[INFO] [stderr] help: if you mean to use a decimal constant, remove the `0` to remove confusion
[INFO] [stderr]    |
[INFO] [stderr] 31 |         (2, 1) => println!("{}", day02::no1()),
[INFO] [stderr]    |          ^
[INFO] [stderr] help: if you mean to use an octal constant, use `0o`
[INFO] [stderr]    |
[INFO] [stderr] 31 |         (0o2, 1) => println!("{}", day02::no1()),
[INFO] [stderr]    |          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this is a decimal constant
[INFO] [stderr]   --> src/main.rs:32:10
[INFO] [stderr]    |
[INFO] [stderr] 32 |         (02, 2) => println!("{}", day02::no2()),
[INFO] [stderr]    |          ^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zero_prefixed_literal
[INFO] [stderr] help: if you mean to use a decimal constant, remove the `0` to remove confusion
[INFO] [stderr]    |
[INFO] [stderr] 32 |         (2, 2) => println!("{}", day02::no2()),
[INFO] [stderr]    |          ^
[INFO] [stderr] help: if you mean to use an octal constant, use `0o`
[INFO] [stderr]    |
[INFO] [stderr] 32 |         (0o2, 2) => println!("{}", day02::no2()),
[INFO] [stderr]    |          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this is a decimal constant
[INFO] [stderr]   --> src/main.rs:33:10
[INFO] [stderr]    |
[INFO] [stderr] 33 |         (03, 1) => println!("{}", day03::no1()),
[INFO] [stderr]    |          ^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zero_prefixed_literal
[INFO] [stderr] help: if you mean to use a decimal constant, remove the `0` to remove confusion
[INFO] [stderr]    |
[INFO] [stderr] 33 |         (3, 1) => println!("{}", day03::no1()),
[INFO] [stderr]    |          ^
[INFO] [stderr] help: if you mean to use an octal constant, use `0o`
[INFO] [stderr]    |
[INFO] [stderr] 33 |         (0o3, 1) => println!("{}", day03::no1()),
[INFO] [stderr]    |          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this is a decimal constant
[INFO] [stderr]   --> src/main.rs:34:10
[INFO] [stderr]    |
[INFO] [stderr] 34 |         (03, 2) => println!("{}", day03::no2()),
[INFO] [stderr]    |          ^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zero_prefixed_literal
[INFO] [stderr] help: if you mean to use a decimal constant, remove the `0` to remove confusion
[INFO] [stderr]    |
[INFO] [stderr] 34 |         (3, 2) => println!("{}", day03::no2()),
[INFO] [stderr]    |          ^
[INFO] [stderr] help: if you mean to use an octal constant, use `0o`
[INFO] [stderr]    |
[INFO] [stderr] 34 |         (0o3, 2) => println!("{}", day03::no2()),
[INFO] [stderr]    |          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `mov`
[INFO] [stderr]    --> src/helper.rs:156:3
[INFO] [stderr]     |
[INFO] [stderr] 156 |   pub fn mov(self, direction: Direction) -> Coordinate<T> {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Left`
[INFO] [stderr]    --> src/helper.rs:180:3
[INFO] [stderr]     |
[INFO] [stderr] 180 |   Left,
[INFO] [stderr]     |   ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Up`
[INFO] [stderr]    --> src/helper.rs:181:3
[INFO] [stderr]     |
[INFO] [stderr] 181 |   Up,
[INFO] [stderr]     |   ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Right`
[INFO] [stderr]    --> src/helper.rs:182:3
[INFO] [stderr]     |
[INFO] [stderr] 182 |   Right,
[INFO] [stderr]     |   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Down`
[INFO] [stderr]    --> src/helper.rs:183:3
[INFO] [stderr]     |
[INFO] [stderr] 183 |   Down,
[INFO] [stderr]     |   ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `all`
[INFO] [stderr]    --> src/helper.rs:187:3
[INFO] [stderr]     |
[INFO] [stderr] 187 |   pub fn all() -> Vec<Direction> {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `left`
[INFO] [stderr]    --> src/helper.rs:196:3
[INFO] [stderr]     |
[INFO] [stderr] 196 |   pub fn left(self) -> Direction {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reverse`
[INFO] [stderr]    --> src/helper.rs:205:3
[INFO] [stderr]     |
[INFO] [stderr] 205 |   pub fn reverse(self) -> Direction {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `right`
[INFO] [stderr]    --> src/helper.rs:209:3
[INFO] [stderr]     |
[INFO] [stderr] 209 |   pub fn right(self) -> Direction {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this lifetime isn't used in the function definition
[INFO] [stderr]   --> src/helper.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn knot<'a, I>(
[INFO] [stderr]    |         ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::extra_unused_lifetimes)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#extra_unused_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]   --> src/day01.rs:41:18
[INFO] [stderr]    |
[INFO] [stderr] 41 |       return s + (byte - b'0') as u32;
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(byte - b'0')`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: Matching on `Some` with `ok()` is redundant
[INFO] [stderr]   --> src/main.rs:26:3
[INFO] [stderr]    |
[INFO] [stderr] 26 | /   if let Some(day) = args[1].parse::<i32>().ok() {
[INFO] [stderr] 27 | |     if let Some(no) = args[2].parse::<i32>().ok() {
[INFO] [stderr] 28 | |       match (day, no) {
[INFO] [stderr] 29 | |         (01, 1) => println!("{}", day01::no1()),
[INFO] [stderr] ...  |
[INFO] [stderr] 43 | |     exit(1);
[INFO] [stderr] 44 | |   }
[INFO] [stderr]    | |___^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::if_let_some_result)] on by default
[INFO] [stderr]    = help: Consider matching on `Ok(day)` and removing the call to `ok` instead
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#if_let_some_result
[INFO] [stderr] 
[INFO] [stderr] warning: Matching on `Some` with `ok()` is redundant
[INFO] [stderr]   --> src/main.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 | /     if let Some(no) = args[2].parse::<i32>().ok() {
[INFO] [stderr] 28 | |       match (day, no) {
[INFO] [stderr] 29 | |         (01, 1) => println!("{}", day01::no1()),
[INFO] [stderr] 30 | |         (01, 2) => println!("{}", day01::no2()),
[INFO] [stderr] ...  |
[INFO] [stderr] 39 | |       exit(1);
[INFO] [stderr] 40 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: Consider matching on `Ok(no)` and removing the call to `ok` instead
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#if_let_some_result
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.80s
[INFO] running `"docker" "inspect" "d9c26cff110dcad6d5d1bf61eb6ea7bc56b6fdc386d62af38b5f757f6be5a980"`
[INFO] running `"docker" "rm" "-f" "d9c26cff110dcad6d5d1bf61eb6ea7bc56b6fdc386d62af38b5f757f6be5a980"`
[INFO] [stdout] d9c26cff110dcad6d5d1bf61eb6ea7bc56b6fdc386d62af38b5f757f6be5a980