[INFO] updating cached repository ahmednooor/mr_huffy
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ahmednooor/mr_huffy
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ahmednooor/mr_huffy" "work/ex/clippy-test-run/sources/stable/gh/ahmednooor/mr_huffy"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/ahmednooor/mr_huffy'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ahmednooor/mr_huffy" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ahmednooor/mr_huffy"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ahmednooor/mr_huffy'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] df72a715d6f8f9026d249a77ec701edb9fb26407
[INFO] sha for GitHub repo ahmednooor/mr_huffy: df72a715d6f8f9026d249a77ec701edb9fb26407
[INFO] validating manifest of ahmednooor/mr_huffy 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 ahmednooor/mr_huffy 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 ahmednooor/mr_huffy
[INFO] finished frobbing ahmednooor/mr_huffy
[INFO] frobbed toml for ahmednooor/mr_huffy written to work/ex/clippy-test-run/sources/stable/gh/ahmednooor/mr_huffy/Cargo.toml
[INFO] started frobbing ahmednooor/mr_huffy
[INFO] finished frobbing ahmednooor/mr_huffy
[INFO] frobbed toml for ahmednooor/mr_huffy written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ahmednooor/mr_huffy/Cargo.toml
[INFO] crate ahmednooor/mr_huffy 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 ahmednooor/mr_huffy against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ahmednooor/mr_huffy:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dclippy::into_iter_on_array" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d2a4adc1dd0d3139bee62f71dbff63d51b3ab5ff59f662b47bc57a23b0a3e6fa
[INFO] running `"docker" "start" "-a" "d2a4adc1dd0d3139bee62f71dbff63d51b3ab5ff59f662b47bc57a23b0a3e6fa"`
[INFO] [stderr]     Checking mr_huffy v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/main.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     println!("");
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/main.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     println!("");
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/main.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     println!("");
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/main.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     println!("");
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/main.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     println!("");
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/main.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     println!("");
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: Consider removing unnecessary double parentheses
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:81:19
[INFO] [stderr]    |
[INFO] [stderr] 81 |     let b4: u32 = ((u8_arr[3] as u32)) as u32;
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::double_parens)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#double_parens
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:91:5
[INFO] [stderr]    |
[INFO] [stderr] 91 |     bitstring
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 | /         U8_BITSTR_ARR[integer as usize].1
[INFO] [stderr] 89 | |         .clone().to_string();
[INFO] [stderr]    | |____________________________^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/mr_huffy/mod.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     encoded_output_bytes
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/mr_huffy/mod.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 | /         comb_freq_and_encoded_bytes(&freq_bytes, 
[INFO] [stderr] 40 | |                                     &encoded_bytes);
[INFO] [stderr]    | |___________________________________________________^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/mr_huffy/mod.rs:93:5
[INFO] [stderr]    |
[INFO] [stderr] 93 |     decoded_bytes
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/mr_huffy/mod.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 | /         decoded_bytes_from_bitstring_and_tree(&compressed_bitstring, 
[INFO] [stderr] 92 | |                                               &tree);
[INFO] [stderr]    | |____________________________________________________^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: Consider removing unnecessary double parentheses
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:81:19
[INFO] [stderr]    |
[INFO] [stderr] 81 |     let b4: u32 = ((u8_arr[3] as u32)) as u32;
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::double_parens)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#double_parens
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:91:5
[INFO] [stderr]    |
[INFO] [stderr] 91 |     bitstring
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 | /         U8_BITSTR_ARR[integer as usize].1
[INFO] [stderr] 89 | |         .clone().to_string();
[INFO] [stderr]    | |____________________________^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/mr_huffy/mod.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     encoded_output_bytes
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/mr_huffy/mod.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 | /         comb_freq_and_encoded_bytes(&freq_bytes, 
[INFO] [stderr] 40 | |                                     &encoded_bytes);
[INFO] [stderr]    | |___________________________________________________^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/mr_huffy/mod.rs:93:5
[INFO] [stderr]    |
[INFO] [stderr] 93 |     decoded_bytes
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/mr_huffy/mod.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 | /         decoded_bytes_from_bitstring_and_tree(&compressed_bitstring, 
[INFO] [stderr] 92 | |                                               &tree);
[INFO] [stderr]    | |____________________________________________________^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:32:17
[INFO] [stderr]    |
[INFO] [stderr] 32 |     bitstring = String::from("1".to_owned() + &bitstring);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `"1".to_owned() + &bitstring`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::identity_conversion)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:42:17
[INFO] [stderr]    |
[INFO] [stderr] 42 |     bitstring = String::from(offset_bits + &bitstring);    
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `offset_bits + &bitstring`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:57:21
[INFO] [stderr]    |
[INFO] [stderr] 57 |         bitstring = String::from(bitstring[offset_index..].to_owned());
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `bitstring[offset_index..].to_owned()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:59:21
[INFO] [stderr]    |
[INFO] [stderr] 59 |         bitstring = String::from(bitstring[..].to_owned());
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `bitstring[..].to_owned()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:78:20
[INFO] [stderr]    |
[INFO] [stderr] 78 |     let b1: u32 = ((u8_arr[0] as u32) << 24) as u32;
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^ help: try: `u32::from(u8_arr[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: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:79:20
[INFO] [stderr]    |
[INFO] [stderr] 79 |     let b2: u32 = ((u8_arr[1] as u32) << 16) as u32;
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^ help: try: `u32::from(u8_arr[1])`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:80:20
[INFO] [stderr]    |
[INFO] [stderr] 80 |     let b3: u32 = ((u8_arr[2] as u32) << 8) as u32;
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^ help: try: `u32::from(u8_arr[2])`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:81:19
[INFO] [stderr]    |
[INFO] [stderr] 81 |     let b4: u32 = ((u8_arr[3] as u32)) as u32;
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(u8_arr[3])`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] error: using `clone` on a double-reference; this will copy the reference instead of cloning the inner type
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 | /         U8_BITSTR_ARR[integer as usize].1
[INFO] [stderr] 89 | |         .clone().to_string();
[INFO] [stderr]    | |________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::clone_double_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_double_ref
[INFO] [stderr] help: try dereferencing it
[INFO] [stderr]    |
[INFO] [stderr] 88 |         &(*U8_BITSTR_ARR[integer as usize].1).clone().to_string();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] help: or try being explicit about what type to clone
[INFO] [stderr]    |
[INFO] [stderr] 88 |         &str::clone(U8_BITSTR_ARR[integer as usize].1).to_string();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/mr_huffy/get_freq_map.rs:3:38
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn get_freq_map(input_bytes_vec: &Vec<u8>) -> Vec<(u8, u32)> {
[INFO] [stderr]   |                                      ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/mr_huffy/get_freq_map.rs:14:28
[INFO] [stderr]    |
[INFO] [stderr] 14 |             freq_map.push((byte.clone(), 1));
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try removing the `clone` call: `byte`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/mr_huffy/make_tree.rs:3:28
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn make_tree(freq_map: &Vec<(u8, u32)>) -> Tree {
[INFO] [stderr]   |                            ^^^^^^^^^^^^^^^ help: change this to: `&[(u8, u32)]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]  --> src/mr_huffy/make_tree.rs:8:24
[INFO] [stderr]   |
[INFO] [stderr] 8 |             byte: Some(byte.clone()),
[INFO] [stderr]   |                        ^^^^^^^^^^^^ help: try dereferencing it: `*byte`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]  --> src/mr_huffy/make_tree.rs:9:19
[INFO] [stderr]   |
[INFO] [stderr] 9 |             freq: freq.clone(),
[INFO] [stderr]   |                   ^^^^^^^^^^^^ help: try dereferencing it: `*freq`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/mr_huffy/make_tree.rs:46:23
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 freq: min_1_node.freq.clone() + min_2_node.freq.clone(),
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `min_1_node.freq`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/mr_huffy/make_tree.rs:46:49
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 freq: min_1_node.freq.clone() + min_2_node.freq.clone(),
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `min_2_node.freq`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]   --> src/mr_huffy/get_comrpessed_bits_map.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 17 |         if !tree.left.is_none() {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^ help: try: `tree.left.is_some()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::nonminimal_bool)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]   --> src/mr_huffy/get_comrpessed_bits_map.rs:27:12
[INFO] [stderr]    |
[INFO] [stderr] 27 |         if !tree.right.is_none() {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^ help: try: `tree.right.is_some()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/mr_huffy/get_comrpessed_bits_map.rs:13:29
[INFO] [stderr]    |
[INFO] [stderr] 13 |             bits_map.insert(tree.byte.unwrap().clone(), bits.clone());
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `tree.byte.unwrap()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/mr_huffy/get_comrpessed_bits_map.rs:39:36
[INFO] [stderr]    |
[INFO] [stderr] 39 |         comrpessed_bits_map.insert(tree.byte.unwrap().clone(), "1".to_string());
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `tree.byte.unwrap()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/mr_huffy/make_bitstring.rs:5:36
[INFO] [stderr]   |
[INFO] [stderr] 5 |                       input_bytes: &Vec<u8>) -> String {
[INFO] [stderr]   |                                    ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/mr_huffy/freq_map_to_bytes.rs:5:36
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn freq_map_to_bytes(freq_map: &Vec<(u8, u32)>) -> Vec<u8> {
[INFO] [stderr]   |                                    ^^^^^^^^^^^^^^^ help: change this to: `&[(u8, u32)]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/mr_huffy/comb_freq_and_encoded_bytes.rs:5:48
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn comb_freq_and_encoded_bytes(freq_bytes: &Vec<u8>, 
[INFO] [stderr]   |                                                ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/mr_huffy/comb_freq_and_encoded_bytes.rs:6:51
[INFO] [stderr]   |
[INFO] [stderr] 6 |                                    encoded_bytes: &Vec<u8>) -> Vec<u8> {
[INFO] [stderr]   |                                                   ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]  --> src/mr_huffy/freq_bytes_to_freq_map.rs:9:11
[INFO] [stderr]   |
[INFO] [stderr] 9 |     while freq_bytes.len() > 0 {
[INFO] [stderr]   |           ^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!freq_bytes.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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/mr_huffy/encoded_bytes_to_bitstring.rs:5:50
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn encoded_bytes_to_bitstring(encoded_bytes: &Vec<u8>) -> String {
[INFO] [stderr]   |                                                  ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/mr_huffy/encoded_bytes_to_bitstring.rs:10:30
[INFO] [stderr]    |
[INFO] [stderr] 10 |             &u8_to_bitstring(byte.clone())
[INFO] [stderr]    |                              ^^^^^^^^^^^^ help: try dereferencing it: `*byte`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]  --> src/mr_huffy/decoded_bytes_from_bitstring_and_tree.rs:5:57
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn decoded_bytes_from_bitstring_and_tree(bitstring: &String, 
[INFO] [stderr]   |                                                         ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]   --> src/mr_huffy/decoded_bytes_from_bitstring_and_tree.rs:11:12
[INFO] [stderr]    |
[INFO] [stderr] 11 |         if bit == '0' && !current_node.left.is_none() {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `bit == '0' && current_node.left.is_some()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]   --> src/mr_huffy/decoded_bytes_from_bitstring_and_tree.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 19 |         if bit == '1' && !current_node.right.is_none() {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `bit == '1' && current_node.right.is_some()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]   --> src/mr_huffy/decoded_bytes_from_bitstring_and_tree.rs:27:12
[INFO] [stderr]    |
[INFO] [stderr] 27 |         if !current_node.byte.is_none() {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `current_node.byte.is_some()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to one
[INFO] [stderr]   --> src/mr_huffy/mod.rs:24:8
[INFO] [stderr]    |
[INFO] [stderr] 24 |     if input_bytes.len() < 1 { return input_bytes.clone(); }
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `input_bytes.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:32:17
[INFO] [stderr]    |
[INFO] [stderr] 32 |     bitstring = String::from("1".to_owned() + &bitstring);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `"1".to_owned() + &bitstring`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::identity_conversion)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to one
[INFO] [stderr]   --> src/mr_huffy/mod.rs:79:8
[INFO] [stderr]    |
[INFO] [stderr] 79 |     if encoded_input_bytes.len() < 1 { return encoded_input_bytes.clone(); }
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `encoded_input_bytes.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:42:17
[INFO] [stderr]    |
[INFO] [stderr] 42 |     bitstring = String::from(offset_bits + &bitstring);    
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `offset_bits + &bitstring`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:57:21
[INFO] [stderr]    |
[INFO] [stderr] 57 |         bitstring = String::from(bitstring[offset_index..].to_owned());
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `bitstring[offset_index..].to_owned()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:59:21
[INFO] [stderr]    |
[INFO] [stderr] 59 |         bitstring = String::from(bitstring[..].to_owned());
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `bitstring[..].to_owned()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:78:20
[INFO] [stderr]    |
[INFO] [stderr] 78 |     let b1: u32 = ((u8_arr[0] as u32) << 24) as u32;
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^ help: try: `u32::from(u8_arr[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: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:79:20
[INFO] [stderr]    |
[INFO] [stderr] 79 |     let b2: u32 = ((u8_arr[1] as u32) << 16) as u32;
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^ help: try: `u32::from(u8_arr[1])`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:80:20
[INFO] [stderr]    |
[INFO] [stderr] 80 |     let b3: u32 = ((u8_arr[2] as u32) << 8) as u32;
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^ help: try: `u32::from(u8_arr[2])`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:81:19
[INFO] [stderr]    |
[INFO] [stderr] 81 |     let b4: u32 = ((u8_arr[3] as u32)) as u32;
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(u8_arr[3])`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] error: using `clone` on a double-reference; this will copy the reference instead of cloning the inner type
[INFO] [stderr]   --> src/mr_huffy/helpers.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 | /         U8_BITSTR_ARR[integer as usize].1
[INFO] [stderr] 89 | |         .clone().to_string();
[INFO] [stderr]    | |________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::clone_double_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_double_ref
[INFO] [stderr] help: try dereferencing it
[INFO] [stderr]    |
[INFO] [stderr] 88 |         &(*U8_BITSTR_ARR[integer as usize].1).clone().to_string();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] help: or try being explicit about what type to clone
[INFO] [stderr]    |
[INFO] [stderr] 88 |         &str::clone(U8_BITSTR_ARR[integer as usize].1).to_string();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/mr_huffy/get_freq_map.rs:3:38
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn get_freq_map(input_bytes_vec: &Vec<u8>) -> Vec<(u8, u32)> {
[INFO] [stderr]   |                                      ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/mr_huffy/get_freq_map.rs:14:28
[INFO] [stderr]    |
[INFO] [stderr] 14 |             freq_map.push((byte.clone(), 1));
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try removing the `clone` call: `byte`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/mr_huffy/make_tree.rs:3:28
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn make_tree(freq_map: &Vec<(u8, u32)>) -> Tree {
[INFO] [stderr]   |                            ^^^^^^^^^^^^^^^ help: change this to: `&[(u8, u32)]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]  --> src/mr_huffy/make_tree.rs:8:24
[INFO] [stderr]   |
[INFO] [stderr] 8 |             byte: Some(byte.clone()),
[INFO] [stderr]   |                        ^^^^^^^^^^^^ help: try dereferencing it: `*byte`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]  --> src/mr_huffy/make_tree.rs:9:19
[INFO] [stderr]   |
[INFO] [stderr] 9 |             freq: freq.clone(),
[INFO] [stderr]   |                   ^^^^^^^^^^^^ help: try dereferencing it: `*freq`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `mr_huffy`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/mr_huffy/make_tree.rs:46:23
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 freq: min_1_node.freq.clone() + min_2_node.freq.clone(),
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `min_1_node.freq`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/mr_huffy/make_tree.rs:46:49
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 freq: min_1_node.freq.clone() + min_2_node.freq.clone(),
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `min_2_node.freq`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]   --> src/mr_huffy/get_comrpessed_bits_map.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 17 |         if !tree.left.is_none() {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^ help: try: `tree.left.is_some()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::nonminimal_bool)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]   --> src/mr_huffy/get_comrpessed_bits_map.rs:27:12
[INFO] [stderr]    |
[INFO] [stderr] 27 |         if !tree.right.is_none() {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^ help: try: `tree.right.is_some()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/mr_huffy/get_comrpessed_bits_map.rs:13:29
[INFO] [stderr]    |
[INFO] [stderr] 13 |             bits_map.insert(tree.byte.unwrap().clone(), bits.clone());
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `tree.byte.unwrap()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/mr_huffy/get_comrpessed_bits_map.rs:39:36
[INFO] [stderr]    |
[INFO] [stderr] 39 |         comrpessed_bits_map.insert(tree.byte.unwrap().clone(), "1".to_string());
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `tree.byte.unwrap()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/mr_huffy/make_bitstring.rs:5:36
[INFO] [stderr]   |
[INFO] [stderr] 5 |                       input_bytes: &Vec<u8>) -> String {
[INFO] [stderr]   |                                    ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/mr_huffy/freq_map_to_bytes.rs:5:36
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn freq_map_to_bytes(freq_map: &Vec<(u8, u32)>) -> Vec<u8> {
[INFO] [stderr]   |                                    ^^^^^^^^^^^^^^^ help: change this to: `&[(u8, u32)]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/mr_huffy/comb_freq_and_encoded_bytes.rs:5:48
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn comb_freq_and_encoded_bytes(freq_bytes: &Vec<u8>, 
[INFO] [stderr]   |                                                ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/mr_huffy/comb_freq_and_encoded_bytes.rs:6:51
[INFO] [stderr]   |
[INFO] [stderr] 6 |                                    encoded_bytes: &Vec<u8>) -> Vec<u8> {
[INFO] [stderr]   |                                                   ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]  --> src/mr_huffy/freq_bytes_to_freq_map.rs:9:11
[INFO] [stderr]   |
[INFO] [stderr] 9 |     while freq_bytes.len() > 0 {
[INFO] [stderr]   |           ^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!freq_bytes.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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/mr_huffy/encoded_bytes_to_bitstring.rs:5:50
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn encoded_bytes_to_bitstring(encoded_bytes: &Vec<u8>) -> String {
[INFO] [stderr]   |                                                  ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/mr_huffy/encoded_bytes_to_bitstring.rs:10:30
[INFO] [stderr]    |
[INFO] [stderr] 10 |             &u8_to_bitstring(byte.clone())
[INFO] [stderr]    |                              ^^^^^^^^^^^^ help: try dereferencing it: `*byte`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]  --> src/mr_huffy/decoded_bytes_from_bitstring_and_tree.rs:5:57
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn decoded_bytes_from_bitstring_and_tree(bitstring: &String, 
[INFO] [stderr]   |                                                         ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]   --> src/mr_huffy/decoded_bytes_from_bitstring_and_tree.rs:11:12
[INFO] [stderr]    |
[INFO] [stderr] 11 |         if bit == '0' && !current_node.left.is_none() {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `bit == '0' && current_node.left.is_some()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]   --> src/mr_huffy/decoded_bytes_from_bitstring_and_tree.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 19 |         if bit == '1' && !current_node.right.is_none() {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `bit == '1' && current_node.right.is_some()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]   --> src/mr_huffy/decoded_bytes_from_bitstring_and_tree.rs:27:12
[INFO] [stderr]    |
[INFO] [stderr] 27 |         if !current_node.byte.is_none() {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `current_node.byte.is_some()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to one
[INFO] [stderr]   --> src/mr_huffy/mod.rs:24:8
[INFO] [stderr]    |
[INFO] [stderr] 24 |     if input_bytes.len() < 1 { return input_bytes.clone(); }
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `input_bytes.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to one
[INFO] [stderr]   --> src/mr_huffy/mod.rs:79:8
[INFO] [stderr]    |
[INFO] [stderr] 79 |     if encoded_input_bytes.len() < 1 { return encoded_input_bytes.clone(); }
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `encoded_input_bytes.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `mr_huffy`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d2a4adc1dd0d3139bee62f71dbff63d51b3ab5ff59f662b47bc57a23b0a3e6fa"`
[INFO] running `"docker" "rm" "-f" "d2a4adc1dd0d3139bee62f71dbff63d51b3ab5ff59f662b47bc57a23b0a3e6fa"`
[INFO] [stdout] d2a4adc1dd0d3139bee62f71dbff63d51b3ab5ff59f662b47bc57a23b0a3e6fa