[INFO] updating cached repository Stevest323/advent_of_code
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Stevest323/advent_of_code
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Stevest323/advent_of_code" "work/ex/clippy-test-run/sources/stable/gh/Stevest323/advent_of_code"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/Stevest323/advent_of_code'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Stevest323/advent_of_code" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Stevest323/advent_of_code"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Stevest323/advent_of_code'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] aad6d257cbe1383300ca83157eaf8fcc6ca2fbd3
[INFO] sha for GitHub repo Stevest323/advent_of_code: aad6d257cbe1383300ca83157eaf8fcc6ca2fbd3
[INFO] validating manifest of Stevest323/advent_of_code 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 Stevest323/advent_of_code 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 Stevest323/advent_of_code
[INFO] finished frobbing Stevest323/advent_of_code
[INFO] frobbed toml for Stevest323/advent_of_code written to work/ex/clippy-test-run/sources/stable/gh/Stevest323/advent_of_code/Cargo.toml
[INFO] started frobbing Stevest323/advent_of_code
[INFO] finished frobbing Stevest323/advent_of_code
[INFO] frobbed toml for Stevest323/advent_of_code written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Stevest323/advent_of_code/Cargo.toml
[INFO] crate Stevest323/advent_of_code 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 Stevest323/advent_of_code against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/Stevest323/advent_of_code:/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] 3608ff888c82fcf6d6ab522a2bd35d01cfa73ebcdb2da988c3225774e802ae24
[INFO] running `"docker" "start" "-a" "3608ff888c82fcf6d6ab522a2bd35d01cfa73ebcdb2da988c3225774e802ae24"`
[INFO] [stderr]     Checking advent_of_code v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/day1/mod.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     return running_total;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `running_total`
[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/day2/mod.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     return two_count * three_count;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `two_count * three_count`
[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/day2/mod.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |         return "None".to_string();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `"None".to_string()`
[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/day2/mod.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     return has_two_only;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `has_two_only`
[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/day2/mod.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 |     return has_three_only;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `has_three_only`
[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/day2/mod.rs:101:5
[INFO] [stderr]     |
[INFO] [stderr] 101 |     return s;
[INFO] [stderr]     |     ^^^^^^^^^ help: remove `return` as shown: `s`
[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: module has the same name as its containing module
[INFO] [stderr]   --> src/day1/day1_tests.rs:3:1
[INFO] [stderr]    |
[INFO] [stderr] 3  | / mod day1_tests {
[INFO] [stderr] 4  | |     use day1::part_two;
[INFO] [stderr] 5  | |     use std::vec;
[INFO] [stderr] 6  | |
[INFO] [stderr] ...  |
[INFO] [stderr] 43 | |     }
[INFO] [stderr] 44 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::module_inception)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::vec`
[INFO] [stderr]  --> src/day1/day1_tests.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     use std::vec;
[INFO] [stderr]   |         ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/day1/mod.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     return running_total;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `running_total`
[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: module has the same name as its containing module
[INFO] [stderr]   --> src/day2/day2_tests.rs:3:1
[INFO] [stderr]    |
[INFO] [stderr] 3  | / mod day2_tests {
[INFO] [stderr] 4  | |
[INFO] [stderr] 5  | | use day2::check_two;
[INFO] [stderr] 6  | | use day2::check_three;
[INFO] [stderr] ...  |
[INFO] [stderr] 47 | |     
[INFO] [stderr] 48 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/day2/mod.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     return two_count * three_count;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `two_count * three_count`
[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/day2/mod.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |         return "None".to_string();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `"None".to_string()`
[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/day2/mod.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     return has_two_only;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `has_two_only`
[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/day2/mod.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 |     return has_three_only;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `has_three_only`
[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/day2/mod.rs:101:5
[INFO] [stderr]     |
[INFO] [stderr] 101 |     return s;
[INFO] [stderr]     |     ^^^^^^^^^ help: remove `return` as shown: `s`
[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: module has the same name as its containing module
[INFO] [stderr]   --> src/main_tests.rs:4:1
[INFO] [stderr]    |
[INFO] [stderr] 4  | / mod main_tests{
[INFO] [stderr] 5  | |
[INFO] [stderr] 6  | |     use find_day;
[INFO] [stderr] 7  | |
[INFO] [stderr] ...  |
[INFO] [stderr] 16 | |     }
[INFO] [stderr] 17 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `values`.
[INFO] [stderr]  --> src/day1/mod.rs:8:14
[INFO] [stderr]   |
[INFO] [stderr] 8 |     for i in 0..values.len() {
[INFO] [stderr]   |              ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]   |
[INFO] [stderr] 8 |     for <item> in &values {
[INFO] [stderr]   |         ^^^^^^    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `values`.
[INFO] [stderr]   --> src/day1/mod.rs:23:18
[INFO] [stderr]    |
[INFO] [stderr] 23 |         for i in 0..values.len() {
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 23 |         for <item> in &values {
[INFO] [stderr]    |             ^^^^^^    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `values`.
[INFO] [stderr]  --> src/day2/mod.rs:8:14
[INFO] [stderr]   |
[INFO] [stderr] 8 |     for i in 0..values.len(){
[INFO] [stderr]   |              ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]   |
[INFO] [stderr] 8 |     for <item> in &values{
[INFO] [stderr]   |         ^^^^^^    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/day2/mod.rs:10:13
[INFO] [stderr]    |
[INFO] [stderr] 10 |             two_count = two_count +1;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `two_count += 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: manual implementation of an assign operation
[INFO] [stderr]   --> src/day2/mod.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |             three_count = three_count+1;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `three_count += 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: length comparison to zero
[INFO] [stderr]   --> src/day2/mod.rs:23:20
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 if check_difference(values[i].clone(), values[j].clone()).len() != 0{
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!check_difference(values[i].clone(), values[j].clone()).is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `j` is only used to index `chars`.
[INFO] [stderr]   --> src/day2/mod.rs:39:18
[INFO] [stderr]    |
[INFO] [stderr] 39 |         for j in 0..chars.len()
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 39 |         for <item> in &chars
[INFO] [stderr]    |             ^^^^^^    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/day2/mod.rs:42:17
[INFO] [stderr]    |
[INFO] [stderr] 42 |                 runner = runner + 1;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^ help: replace it with: `runner += 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: the loop variable `j` is only used to index `chars`.
[INFO] [stderr]   --> src/day2/mod.rs:59:18
[INFO] [stderr]    |
[INFO] [stderr] 59 |         for j in 0..chars.len()
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 59 |         for <item> in &chars
[INFO] [stderr]    |             ^^^^^^    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/day2/mod.rs:62:17
[INFO] [stderr]    |
[INFO] [stderr] 62 |                 runner = runner + 1;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^ help: replace it with: `runner += 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/day2/mod.rs:84:13
[INFO] [stderr]    |
[INFO] [stderr] 84 |             running_total = running_total + 1;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `running_total += 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: the loop variable `i` is used to index `chars1`
[INFO] [stderr]   --> src/day2/mod.rs:92:18
[INFO] [stderr]    |
[INFO] [stderr] 92 |         for i in 0..chars1.len(){
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 92 |         for (i, <item>) in chars1.iter().enumerate(){
[INFO] [stderr]    |             ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this let-binding has unit value. Consider omitting `let _day =`
[INFO] [stderr]   --> src/main.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 | /     let _day = match day_in.parse::<i32>() {
[INFO] [stderr] 33 | |         Ok(_i32) => return _i32,
[INFO] [stderr] 34 | |         Err(_error) => return -1,
[INFO] [stderr] 35 | |     };
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_unit_value)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `values`.
[INFO] [stderr]  --> src/day1/mod.rs:8:14
[INFO] [stderr]   |
[INFO] [stderr] 8 |     for i in 0..values.len() {
[INFO] [stderr]   |              ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]   |
[INFO] [stderr] 8 |     for <item> in &values {
[INFO] [stderr]   |         ^^^^^^    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `values`.
[INFO] [stderr]   --> src/day1/mod.rs:23:18
[INFO] [stderr]    |
[INFO] [stderr] 23 |         for i in 0..values.len() {
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 23 |         for <item> in &values {
[INFO] [stderr]    |             ^^^^^^    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `values`.
[INFO] [stderr]  --> src/day2/mod.rs:8:14
[INFO] [stderr]   |
[INFO] [stderr] 8 |     for i in 0..values.len(){
[INFO] [stderr]   |              ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]   |
[INFO] [stderr] 8 |     for <item> in &values{
[INFO] [stderr]   |         ^^^^^^    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/day2/mod.rs:10:13
[INFO] [stderr]    |
[INFO] [stderr] 10 |             two_count = two_count +1;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `two_count += 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: manual implementation of an assign operation
[INFO] [stderr]   --> src/day2/mod.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |             three_count = three_count+1;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `three_count += 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: length comparison to zero
[INFO] [stderr]   --> src/day2/mod.rs:23:20
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 if check_difference(values[i].clone(), values[j].clone()).len() != 0{
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!check_difference(values[i].clone(), values[j].clone()).is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `j` is only used to index `chars`.
[INFO] [stderr]   --> src/day2/mod.rs:39:18
[INFO] [stderr]    |
[INFO] [stderr] 39 |         for j in 0..chars.len()
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 39 |         for <item> in &chars
[INFO] [stderr]    |             ^^^^^^    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/day2/mod.rs:42:17
[INFO] [stderr]    |
[INFO] [stderr] 42 |                 runner = runner + 1;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^ help: replace it with: `runner += 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: the loop variable `j` is only used to index `chars`.
[INFO] [stderr]   --> src/day2/mod.rs:59:18
[INFO] [stderr]    |
[INFO] [stderr] 59 |         for j in 0..chars.len()
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 59 |         for <item> in &chars
[INFO] [stderr]    |             ^^^^^^    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/day2/mod.rs:62:17
[INFO] [stderr]    |
[INFO] [stderr] 62 |                 runner = runner + 1;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^ help: replace it with: `runner += 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/day2/mod.rs:84:13
[INFO] [stderr]    |
[INFO] [stderr] 84 |             running_total = running_total + 1;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `running_total += 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: the loop variable `i` is used to index `chars1`
[INFO] [stderr]   --> src/day2/mod.rs:92:18
[INFO] [stderr]    |
[INFO] [stderr] 92 |         for i in 0..chars1.len(){
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 92 |         for (i, <item>) in chars1.iter().enumerate(){
[INFO] [stderr]    |             ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this let-binding has unit value. Consider omitting `let _day =`
[INFO] [stderr]   --> src/main.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 | /     let _day = match day_in.parse::<i32>() {
[INFO] [stderr] 33 | |         Ok(_i32) => return _i32,
[INFO] [stderr] 34 | |         Err(_error) => return -1,
[INFO] [stderr] 35 | |     };
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_unit_value)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `"docker" "inspect" "3608ff888c82fcf6d6ab522a2bd35d01cfa73ebcdb2da988c3225774e802ae24"`
[INFO] running `"docker" "rm" "-f" "3608ff888c82fcf6d6ab522a2bd35d01cfa73ebcdb2da988c3225774e802ae24"`
[INFO] [stdout] 3608ff888c82fcf6d6ab522a2bd35d01cfa73ebcdb2da988c3225774e802ae24