[INFO] updating cached repository msathis/adventofcode
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/msathis/adventofcode
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/msathis/adventofcode" "work/ex/clippy-test-run/sources/stable/gh/msathis/adventofcode"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/msathis/adventofcode'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/msathis/adventofcode" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/msathis/adventofcode"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/msathis/adventofcode'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9b8a2e4a40738555a0bc08247718291bc1c0485a
[INFO] sha for GitHub repo msathis/adventofcode: 9b8a2e4a40738555a0bc08247718291bc1c0485a
[INFO] validating manifest of msathis/adventofcode 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 msathis/adventofcode 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 msathis/adventofcode
[INFO] finished frobbing msathis/adventofcode
[INFO] frobbed toml for msathis/adventofcode written to work/ex/clippy-test-run/sources/stable/gh/msathis/adventofcode/Cargo.toml
[INFO] started frobbing msathis/adventofcode
[INFO] finished frobbing msathis/adventofcode
[INFO] frobbed toml for msathis/adventofcode written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/msathis/adventofcode/Cargo.toml
[INFO] crate msathis/adventofcode 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 msathis/adventofcode 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/msathis/adventofcode:/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] 031547500b7c5b643103da95b402081f2c9001e16a43fccdacfd45638d7408ec
[INFO] running `"docker" "start" "-a" "031547500b7c5b643103da95b402081f2c9001e16a43fccdacfd45638d7408ec"`
[INFO] [stderr]     Checking adventofcode v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Stdin`
[INFO] [stderr]  --> src/day1.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stderr]   |               ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded `()`
[INFO] [stderr]   --> src/day1.rs:31:24
[INFO] [stderr]    |
[INFO] [stderr] 31 |                 return ();
[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: unused import: `Stdin`
[INFO] [stderr]  --> src/day2.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stderr]   |               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Stdin`
[INFO] [stderr]  --> src/day3.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stderr]   |               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::str::Chars`
[INFO] [stderr]  --> src/day3.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use core::str::Chars;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Stdin`
[INFO] [stderr]  --> src/day1.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stderr]   |               ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded `()`
[INFO] [stderr]   --> src/day1.rs:31:24
[INFO] [stderr]    |
[INFO] [stderr] 31 |                 return ();
[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: unused import: `Stdin`
[INFO] [stderr]  --> src/day2.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stderr]   |               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Stdin`
[INFO] [stderr]  --> src/day3.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{Stdin, Read, stdin};
[INFO] [stderr]   |               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::str::Chars`
[INFO] [stderr]  --> src/day3.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use core::str::Chars;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `has_twos`
[INFO] [stderr]   --> src/day2.rs:14:17
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut has_twos = false;
[INFO] [stderr]    |                 ^^^^^^^^ help: consider using `_has_twos` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `has_threes`
[INFO] [stderr]   --> src/day2.rs:15:17
[INFO] [stderr]    |
[INFO] [stderr] 15 |         let mut has_threes = false;
[INFO] [stderr]    |                 ^^^^^^^^^^ help: consider using `_has_threes` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `claims`
[INFO] [stderr]   --> src/day3.rs:58:19
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let (hashmap, claims) = get_map(&buffer, &re);
[INFO] [stderr]    |                   ^^^^^^ help: consider using `_claims` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/day3.rs:61:10
[INFO] [stderr]    |
[INFO] [stderr] 61 |     for (key, val) in &hashmap {
[INFO] [stderr]    |          ^^^ help: consider using `_key` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `has_twos`
[INFO] [stderr]   --> src/day2.rs:14:17
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut has_twos = false;
[INFO] [stderr]    |                 ^^^^^^^^ help: consider using `_has_twos` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `has_threes`
[INFO] [stderr]   --> src/day2.rs:15:17
[INFO] [stderr]    |
[INFO] [stderr] 15 |         let mut has_threes = false;
[INFO] [stderr]    |                 ^^^^^^^^^^ help: consider using `_has_threes` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `claims`
[INFO] [stderr]   --> src/day3.rs:58:19
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let (hashmap, claims) = get_map(&buffer, &re);
[INFO] [stderr]    |                   ^^^^^^ help: consider using `_claims` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/day3.rs:61:10
[INFO] [stderr]    |
[INFO] [stderr] 61 |     for (key, val) in &hashmap {
[INFO] [stderr]    |          ^^^ help: consider using `_key` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day2.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut has_twos = false;
[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/day2.rs:15:13
[INFO] [stderr]    |
[INFO] [stderr] 15 |         let mut has_threes = false;
[INFO] [stderr]    |             ----^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day2.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut has_twos = false;
[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/day2.rs:15:13
[INFO] [stderr]    |
[INFO] [stderr] 15 |         let mut has_threes = false;
[INFO] [stderr]    |             ----^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]  --> src/day1.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/day1.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]  --> src/day2.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `HashMap`
[INFO] [stderr]   --> src/day2.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 | /             if visited_chars.contains_key(&c) {
[INFO] [stderr] 19 | |                 visited_chars.insert(c, visited_chars.get(&c).unwrap() + 1);
[INFO] [stderr] 20 | |             } else {
[INFO] [stderr] 21 | |                 visited_chars.insert(c, 1);
[INFO] [stderr] 22 | |             }
[INFO] [stderr]    | |_____________^ help: consider using: `visited_chars.entry(c)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::map_entry)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/day2.rs:19:41
[INFO] [stderr]    |
[INFO] [stderr] 19 |                 visited_chars.insert(c, visited_chars.get(&c).unwrap() + 1);
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&visited_chars[&c]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/day2.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/day2.rs:46:34
[INFO] [stderr]    |
[INFO] [stderr] 46 |             let f_word: &Chars = lines.get(i).unwrap();
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^ help: try this: `lines[i]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/day2.rs:47:34
[INFO] [stderr]    |
[INFO] [stderr] 47 |             let s_word: &Chars = lines.get(j).unwrap();
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^ help: try this: `lines[j]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/day2.rs:64:13
[INFO] [stderr]    |
[INFO] [stderr] 64 |             mismatch = mismatch + 1;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `mismatch += 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] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/day3.rs:27:24
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn get_map(buffer: &String, re: &Regex) -> (HashMap<(u32, u32), i32>, Vec<Claim>) {
[INFO] [stderr]    |                        ^^^^^^^ help: change this to: `&str`
[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: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/day3.rs:39:29
[INFO] [stderr]    |
[INFO] [stderr] 39 |                     count = hashmap.get(&(i, j)).unwrap() + 1;
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&hashmap[&(i, j)]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]  --> src/day1.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/day3.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/day1.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/day3.rs:62:12
[INFO] [stderr]    |
[INFO] [stderr] 62 |         if val > &1 {
[INFO] [stderr]    |            ^^^^^^--
[INFO] [stderr]    |                  |
[INFO] [stderr]    |                  help: use the right value directly: `1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::op_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/day3.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]  --> src/day2.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/day3.rs:81:20
[INFO] [stderr]    |
[INFO] [stderr] 81 |                 if hashmap.get(&(i, j)).unwrap() > &1 {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^--
[INFO] [stderr]    |                                                    |
[INFO] [stderr]    |                                                    help: use the right value directly: `1`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/day3.rs:81:20
[INFO] [stderr]    |
[INFO] [stderr] 81 |                 if hashmap.get(&(i, j)).unwrap() > &1 {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&hashmap[&(i, j)]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `HashMap`
[INFO] [stderr]   --> src/day2.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 | /             if visited_chars.contains_key(&c) {
[INFO] [stderr] 19 | |                 visited_chars.insert(c, visited_chars.get(&c).unwrap() + 1);
[INFO] [stderr] 20 | |             } else {
[INFO] [stderr] 21 | |                 visited_chars.insert(c, 1);
[INFO] [stderr] 22 | |             }
[INFO] [stderr]    | |_____________^ help: consider using: `visited_chars.entry(c)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::map_entry)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/day2.rs:19:41
[INFO] [stderr]    |
[INFO] [stderr] 19 |                 visited_chars.insert(c, visited_chars.get(&c).unwrap() + 1);
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&visited_chars[&c]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/day2.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/day2.rs:46:34
[INFO] [stderr]    |
[INFO] [stderr] 46 |             let f_word: &Chars = lines.get(i).unwrap();
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^ help: try this: `lines[i]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/day2.rs:47:34
[INFO] [stderr]    |
[INFO] [stderr] 47 |             let s_word: &Chars = lines.get(j).unwrap();
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^ help: try this: `lines[j]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/day2.rs:64:13
[INFO] [stderr]    |
[INFO] [stderr] 64 |             mismatch = mismatch + 1;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `mismatch += 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] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/day3.rs:27:24
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn get_map(buffer: &String, re: &Regex) -> (HashMap<(u32, u32), i32>, Vec<Claim>) {
[INFO] [stderr]    |                        ^^^^^^^ help: change this to: `&str`
[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: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/day3.rs:39:29
[INFO] [stderr]    |
[INFO] [stderr] 39 |                     count = hashmap.get(&(i, j)).unwrap() + 1;
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&hashmap[&(i, j)]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/day3.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/day3.rs:62:12
[INFO] [stderr]    |
[INFO] [stderr] 62 |         if val > &1 {
[INFO] [stderr]    |            ^^^^^^--
[INFO] [stderr]    |                  |
[INFO] [stderr]    |                  help: use the right value directly: `1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::op_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/day3.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     stdin().read_to_string(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/day3.rs:81:20
[INFO] [stderr]    |
[INFO] [stderr] 81 |                 if hashmap.get(&(i, j)).unwrap() > &1 {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^--
[INFO] [stderr]    |                                                    |
[INFO] [stderr]    |                                                    help: use the right value directly: `1`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/day3.rs:81:20
[INFO] [stderr]    |
[INFO] [stderr] 81 |                 if hashmap.get(&(i, j)).unwrap() > &1 {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&hashmap[&(i, j)]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.54s
[INFO] running `"docker" "inspect" "031547500b7c5b643103da95b402081f2c9001e16a43fccdacfd45638d7408ec"`
[INFO] running `"docker" "rm" "-f" "031547500b7c5b643103da95b402081f2c9001e16a43fccdacfd45638d7408ec"`
[INFO] [stdout] 031547500b7c5b643103da95b402081f2c9001e16a43fccdacfd45638d7408ec