[INFO] updating cached repository Akavall/FileParsingTools
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Akavall/FileParsingTools
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Akavall/FileParsingTools" "work/ex/clippy-test-run/sources/stable/gh/Akavall/FileParsingTools"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/Akavall/FileParsingTools'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Akavall/FileParsingTools" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Akavall/FileParsingTools"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Akavall/FileParsingTools'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2313b051de3864577c4dd128f97daa28f06760bd
[INFO] sha for GitHub repo Akavall/FileParsingTools: 2313b051de3864577c4dd128f97daa28f06760bd
[INFO] validating manifest of Akavall/FileParsingTools 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 Akavall/FileParsingTools 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 Akavall/FileParsingTools
[INFO] finished frobbing Akavall/FileParsingTools
[INFO] frobbed toml for Akavall/FileParsingTools written to work/ex/clippy-test-run/sources/stable/gh/Akavall/FileParsingTools/Cargo.toml
[INFO] started frobbing Akavall/FileParsingTools
[INFO] finished frobbing Akavall/FileParsingTools
[INFO] frobbed toml for Akavall/FileParsingTools written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Akavall/FileParsingTools/Cargo.toml
[INFO] crate Akavall/FileParsingTools 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 Akavall/FileParsingTools against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-7/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/Akavall/FileParsingTools:/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] 064d48b3f491b75832d7b35c06e30ccf6811d6767500f881bde7732ea15d1635
[INFO] running `"docker" "start" "-a" "064d48b3f491b75832d7b35c06e30ccf6811d6767500f881bde7732ea15d1635"`
[INFO] [stderr]     Checking temp v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `line`
[INFO] [stderr]   --> src/n_rows/bin/main.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     for line in reader.lines() {
[INFO] [stderr]    |         ^^^^ help: consider using `_line` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/col_counter/bin/main.rs:128:5
[INFO] [stderr]     |
[INFO] [stderr] 128 |     return col_string;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `col_string`
[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: this if statement can be collapsed
[INFO] [stderr]    --> src/col_counter/bin/main.rs:106:9
[INFO] [stderr]     |
[INFO] [stderr] 106 | /         if col == col_tracker {
[INFO] [stderr] 107 | |             if c != delim || quote == true {
[INFO] [stderr] 108 | |                 col_string.push(c)
[INFO] [stderr] 109 | |             }
[INFO] [stderr] 110 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 106 |         if col == col_tracker && (c != delim || quote == true) {
[INFO] [stderr] 107 |     col_string.push(c)
[INFO] [stderr] 108 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/col_counter/bin/main.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let ref file_name = args[1];
[INFO] [stderr]    |     ----^^^^^^^^^^^^^----------- help: try: `let file_name = &args[1];`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/col_counter/bin/main.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let ref col_number_str = args[2];
[INFO] [stderr]    |     ----^^^^^^^^^^^^^^^^^^----------- help: try: `let col_number_str = &args[2];`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]   --> src/col_counter/bin/main.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         Err(_) => panic!("Could not parse the col number: {}", example_input),
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_wild_err_arm)] on by default
[INFO] [stderr]    = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/col_counter/bin/main.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let ref delim_raw = args[3];
[INFO] [stderr]    |     ----^^^^^^^^^^^^^----------- help: try: `let delim_raw = &args[3];`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/col_counter/bin/main.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |     let ref n_lines_str = args[4];
[INFO] [stderr]    |     ----^^^^^^^^^^^^^^^----------- help: try: `let n_lines_str = &args[4];`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]   --> src/col_counter/bin/main.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |         Err(_) => panic!("Could not parse n_lines: {}", example_input),
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]   --> src/col_counter/bin/main.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |         Err(_) => panic!("Could not open file: {} check if the file exists. Are you sure your input is correct? {}", file_name, example_input),
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `HashMap`
[INFO] [stderr]   --> src/col_counter/bin/main.rs:66:9
[INFO] [stderr]    |
[INFO] [stderr] 66 | /         if my_counter.contains_key(&col_string) {
[INFO] [stderr] 67 | |             *my_counter.get_mut(&col_string).unwrap() += 1;
[INFO] [stderr] 68 | |         } else {
[INFO] [stderr] 69 | |             my_counter.insert(col_string, 1);
[INFO] [stderr] 70 | |         }
[INFO] [stderr]    | |_________^ help: consider using: `my_counter.entry(col_string)`
[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: the loop variable `ind` is used to index `my_counter_items`
[INFO] [stderr]   --> src/col_counter/bin/main.rs:88:16
[INFO] [stderr]    |
[INFO] [stderr] 88 |     for ind in 0..(n_lines_to_print) {
[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] 88 |     for (ind, <item>) in my_counter_items.iter().enumerate().take((n_lines_to_print)) {
[INFO] [stderr]    |         ^^^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against true are unnecessary
[INFO] [stderr]    --> src/col_counter/bin/main.rs:107:30
[INFO] [stderr]     |
[INFO] [stderr] 107 |             if c != delim || quote == true {
[INFO] [stderr]     |                              ^^^^^^^^^^^^^ help: try simplifying it as shown: `quote`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::bool_comparison)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]    --> src/col_counter/bin/main.rs:113:16
[INFO] [stderr]     |
[INFO] [stderr] 113 |             if quote == false {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^ help: try simplifying it as shown: `!quote`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]    --> src/col_counter/bin/main.rs:120:26
[INFO] [stderr]     |
[INFO] [stderr] 120 |         if c == delim && quote == false {
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^ help: try simplifying it as shown: `!quote`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/col_counter/bin/main.rs:128:5
[INFO] [stderr]     |
[INFO] [stderr] 128 |     return col_string;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `col_string`
[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: this if statement can be collapsed
[INFO] [stderr]    --> src/col_counter/bin/main.rs:106:9
[INFO] [stderr]     |
[INFO] [stderr] 106 | /         if col == col_tracker {
[INFO] [stderr] 107 | |             if c != delim || quote == true {
[INFO] [stderr] 108 | |                 col_string.push(c)
[INFO] [stderr] 109 | |             }
[INFO] [stderr] 110 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 106 |         if col == col_tracker && (c != delim || quote == true) {
[INFO] [stderr] 107 |     col_string.push(c)
[INFO] [stderr] 108 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line`
[INFO] [stderr]   --> src/n_rows/bin/main.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     for line in reader.lines() {
[INFO] [stderr]    |         ^^^^ help: consider using `_line` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/col_counter/bin/main.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let ref file_name = args[1];
[INFO] [stderr]    |     ----^^^^^^^^^^^^^----------- help: try: `let file_name = &args[1];`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/col_counter/bin/main.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let ref col_number_str = args[2];
[INFO] [stderr]    |     ----^^^^^^^^^^^^^^^^^^----------- help: try: `let col_number_str = &args[2];`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]   --> src/col_counter/bin/main.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         Err(_) => panic!("Could not parse the col number: {}", example_input),
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_wild_err_arm)] on by default
[INFO] [stderr]    = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/col_counter/bin/main.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let ref delim_raw = args[3];
[INFO] [stderr]    |     ----^^^^^^^^^^^^^----------- help: try: `let delim_raw = &args[3];`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/col_counter/bin/main.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |     let ref n_lines_str = args[4];
[INFO] [stderr]    |     ----^^^^^^^^^^^^^^^----------- help: try: `let n_lines_str = &args[4];`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]   --> src/col_counter/bin/main.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |         Err(_) => panic!("Could not parse n_lines: {}", example_input),
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]   --> src/col_counter/bin/main.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |         Err(_) => panic!("Could not open file: {} check if the file exists. Are you sure your input is correct? {}", file_name, example_input),
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `HashMap`
[INFO] [stderr]   --> src/col_counter/bin/main.rs:66:9
[INFO] [stderr]    |
[INFO] [stderr] 66 | /         if my_counter.contains_key(&col_string) {
[INFO] [stderr] 67 | |             *my_counter.get_mut(&col_string).unwrap() += 1;
[INFO] [stderr] 68 | |         } else {
[INFO] [stderr] 69 | |             my_counter.insert(col_string, 1);
[INFO] [stderr] 70 | |         }
[INFO] [stderr]    | |_________^ help: consider using: `my_counter.entry(col_string)`
[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: the loop variable `ind` is used to index `my_counter_items`
[INFO] [stderr]   --> src/col_counter/bin/main.rs:88:16
[INFO] [stderr]    |
[INFO] [stderr] 88 |     for ind in 0..(n_lines_to_print) {
[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] 88 |     for (ind, <item>) in my_counter_items.iter().enumerate().take((n_lines_to_print)) {
[INFO] [stderr]    |         ^^^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against true are unnecessary
[INFO] [stderr]    --> src/col_counter/bin/main.rs:107:30
[INFO] [stderr]     |
[INFO] [stderr] 107 |             if c != delim || quote == true {
[INFO] [stderr]     |                              ^^^^^^^^^^^^^ help: try simplifying it as shown: `quote`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::bool_comparison)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]    --> src/col_counter/bin/main.rs:113:16
[INFO] [stderr]     |
[INFO] [stderr] 113 |             if quote == false {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^ help: try simplifying it as shown: `!quote`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]    --> src/col_counter/bin/main.rs:120:26
[INFO] [stderr]     |
[INFO] [stderr] 120 |         if c == delim && quote == false {
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^ help: try simplifying it as shown: `!quote`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/head_color/bin/main.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let ref file_name = args[1];
[INFO] [stderr]    |     ----^^^^^^^^^^^^^----------- help: try: `let file_name = &args[1];`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/head_color/bin/main.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let ref col_number_str = args[2];
[INFO] [stderr]    |     ----^^^^^^^^^^^^^^^^^^----------- help: try: `let col_number_str = &args[2];`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]   --> src/head_color/bin/main.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |         Err(_) => panic!("Could not parse the col number: {}", example_input),
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_wild_err_arm)] on by default
[INFO] [stderr]    = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/head_color/bin/main.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let ref delim_raw = args[3];
[INFO] [stderr]    |     ----^^^^^^^^^^^^^----------- help: try: `let delim_raw = &args[3];`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/head_color/bin/main.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let ref n_lines_str = args[4];
[INFO] [stderr]    |     ----^^^^^^^^^^^^^^^----------- help: try: `let n_lines_str = &args[4];`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]   --> src/head_color/bin/main.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 46 |         Err(_) => panic!("Could not parse n_lines: {}", example_input),
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]   --> src/head_color/bin/main.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |         Err(_) => panic!("Could not open file: {} check if the file exists. Are you sure your input is correct? {}", file_name, example_input),
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `row_number` is used as a loop counter. Consider using `for (row_number, item) in reader.lines().enumerate()` or similar iterators
[INFO] [stderr]   --> src/head_color/bin/main.rs:58:17
[INFO] [stderr]    |
[INFO] [stderr] 58 |     for line in reader.lines() {
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::explicit_counter_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/head_color/bin/main.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let ref file_name = args[1];
[INFO] [stderr]    |     ----^^^^^^^^^^^^^----------- help: try: `let file_name = &args[1];`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/head_color/bin/main.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let ref col_number_str = args[2];
[INFO] [stderr]    |     ----^^^^^^^^^^^^^^^^^^----------- help: try: `let col_number_str = &args[2];`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]   --> src/head_color/bin/main.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |         Err(_) => panic!("Could not parse the col number: {}", example_input),
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_wild_err_arm)] on by default
[INFO] [stderr]    = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/head_color/bin/main.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let ref delim_raw = args[3];
[INFO] [stderr]    |     ----^^^^^^^^^^^^^----------- help: try: `let delim_raw = &args[3];`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/head_color/bin/main.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let ref n_lines_str = args[4];
[INFO] [stderr]    |     ----^^^^^^^^^^^^^^^----------- help: try: `let n_lines_str = &args[4];`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]   --> src/head_color/bin/main.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 46 |         Err(_) => panic!("Could not parse n_lines: {}", example_input),
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]   --> src/head_color/bin/main.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |         Err(_) => panic!("Could not open file: {} check if the file exists. Are you sure your input is correct? {}", file_name, example_input),
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `row_number` is used as a loop counter. Consider using `for (row_number, item) in reader.lines().enumerate()` or similar iterators
[INFO] [stderr]   --> src/head_color/bin/main.rs:58:17
[INFO] [stderr]    |
[INFO] [stderr] 58 |     for line in reader.lines() {
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::explicit_counter_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]   --> src/head_color/bin/main.rs:79:16
[INFO] [stderr]    |
[INFO] [stderr] 79 |             if quote == false {
[INFO] [stderr]    |                ^^^^^^^^^^^^^^ help: try simplifying it as shown: `!quote`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::bool_comparison)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]   --> src/head_color/bin/main.rs:86:26
[INFO] [stderr]    |
[INFO] [stderr] 86 |         if c == delim && quote == false {
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^ help: try simplifying it as shown: `!quote`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]   --> src/head_color/bin/main.rs:79:16
[INFO] [stderr]    |
[INFO] [stderr] 79 |             if quote == false {
[INFO] [stderr]    |                ^^^^^^^^^^^^^^ help: try simplifying it as shown: `!quote`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::bool_comparison)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]   --> src/head_color/bin/main.rs:86:26
[INFO] [stderr]    |
[INFO] [stderr] 86 |         if c == delim && quote == false {
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^ help: try simplifying it as shown: `!quote`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.18s
[INFO] running `"docker" "inspect" "064d48b3f491b75832d7b35c06e30ccf6811d6767500f881bde7732ea15d1635"`
[INFO] running `"docker" "rm" "-f" "064d48b3f491b75832d7b35c06e30ccf6811d6767500f881bde7732ea15d1635"`
[INFO] [stdout] 064d48b3f491b75832d7b35c06e30ccf6811d6767500f881bde7732ea15d1635