[INFO] cloning repository https://github.com/Alex-Pelle/r5a12-compression
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Alex-Pelle/r5a12-compression" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlex-Pelle%2Fr5a12-compression", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlex-Pelle%2Fr5a12-compression'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 048c35bec9e0e27763ee0b434cd239c0b049a09f
[INFO] checking Alex-Pelle/r5a12-compression against master#36b21637e93b038453924d3c66821089e71d8baa for pr-143164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlex-Pelle%2Fr5a12-compression" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Alex-Pelle/r5a12-compression
[INFO] finished tweaking git repo https://github.com/Alex-Pelle/r5a12-compression
[INFO] tweaked toml for git repo https://github.com/Alex-Pelle/r5a12-compression written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Alex-Pelle/r5a12-compression on toolchain 36b21637e93b038453924d3c66821089e71d8baa
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Alex-Pelle/r5a12-compression already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bitstream-io v2.5.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4403804e68194b32a4b540dd36d66a3391030c95f4d27fbb8be2421a6c86d21b
[INFO] running `Command { std: "docker" "start" "-a" "4403804e68194b32a4b540dd36d66a3391030c95f4d27fbb8be2421a6c86d21b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4403804e68194b32a4b540dd36d66a3391030c95f4d27fbb8be2421a6c86d21b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4403804e68194b32a4b540dd36d66a3391030c95f4d27fbb8be2421a6c86d21b", kill_on_drop: false }`
[INFO] [stdout] 4403804e68194b32a4b540dd36d66a3391030c95f4d27fbb8be2421a6c86d21b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c95571bc566489f6fa94d4a03d9b765e62fd44ea39d2099b85ce60f8cbbb4192
[INFO] running `Command { std: "docker" "start" "-a" "c95571bc566489f6fa94d4a03d9b765e62fd44ea39d2099b85ce60f8cbbb4192", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.13.0
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]     Checking bitstream-io v2.5.3
[INFO] [stderr]     Checking r5a12-compression v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader`, `BufWriter`, `Read`, and `Write`
[INFO] [stdout]  --> src/main.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{BufReader, BufWriter, Read, Write};
[INFO] [stdout]   |               ^^^^^^^^^  ^^^^^^^^^  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BigEndian`, `BitWrite`, and `LittleEndian`
[INFO] [stdout]  --> src/main.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | use bitstream_io::{BigEndian, BitWrite, LittleEndian};
[INFO] [stdout]   |                    ^^^^^^^^^  ^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/huffman.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::entropie::comptage_mots`
[INFO] [stdout]  --> src/encode.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::entropie::comptage_mots;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/encode.rs:110:26
[INFO] [stdout]     |
[INFO] [stdout] 110 |         size_of_header = (1 + max_length as usize + cumulative_size_of_words(&cannonical) + 4);
[INFO] [stdout]     |                          ^                                                                   ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 110 -         size_of_header = (1 + max_length as usize + cumulative_size_of_words(&cannonical) + 4);
[INFO] [stdout] 110 +         size_of_header = 1 + max_length as usize + cumulative_size_of_words(&cannonical) + 4;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ByteReader`
[INFO] [stdout]  --> src/utils.rs:3:51
[INFO] [stdout]   |
[INFO] [stdout] 3 | use bitstream_io::{BigEndian, BitRead, BitReader, ByteReader};
[INFO] [stdout]   |                                                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader` and `Write`
[INFO] [stdout]  --> src/decode.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{BufReader, Read, Write};
[INFO] [stdout]   |               ^^^^^^^^^        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BitWriter`
[INFO] [stdout]  --> src/decode.rs:4:51
[INFO] [stdout]   |
[INFO] [stdout] 4 | use bitstream_io::{BigEndian, BitRead, BitReader, BitWriter, ByteWrite, ByteWriter};
[INFO] [stdout]   |                                                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tree::Node`
[INFO] [stdout]   --> src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use tree::Node;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `max_encoded_length`, `number_of_symbols`, `to_list_for_canonical`, and `to_ordered_list`
[INFO] [stdout]   --> src/main.rs:17:22
[INFO] [stdout]    |
[INFO] [stdout] 17 | use crate::huffman::{max_encoded_length, number_of_symbols, to_list_for_canonical, to_ordered_list};
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::utils::open_file`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use crate::utils::open_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader`, `BufWriter`, `Read`, and `Write`
[INFO] [stdout]  --> src/main.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{BufReader, BufWriter, Read, Write};
[INFO] [stdout]   |               ^^^^^^^^^  ^^^^^^^^^  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BigEndian`, `BitWrite`, and `LittleEndian`
[INFO] [stdout]  --> src/main.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | use bitstream_io::{BigEndian, BitWrite, LittleEndian};
[INFO] [stdout]   |                    ^^^^^^^^^  ^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/huffman.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::entropie::comptage_mots`
[INFO] [stdout]  --> src/encode.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::entropie::comptage_mots;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/encode.rs:110:26
[INFO] [stdout]     |
[INFO] [stdout] 110 |         size_of_header = (1 + max_length as usize + cumulative_size_of_words(&cannonical) + 4);
[INFO] [stdout]     |                          ^                                                                   ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 110 -         size_of_header = (1 + max_length as usize + cumulative_size_of_words(&cannonical) + 4);
[INFO] [stdout] 110 +         size_of_header = 1 + max_length as usize + cumulative_size_of_words(&cannonical) + 4;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ByteReader`
[INFO] [stdout]  --> src/utils.rs:3:51
[INFO] [stdout]   |
[INFO] [stdout] 3 | use bitstream_io::{BigEndian, BitRead, BitReader, ByteReader};
[INFO] [stdout]   |                                                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader` and `Write`
[INFO] [stdout]  --> src/decode.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{BufReader, Read, Write};
[INFO] [stdout]   |               ^^^^^^^^^        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BitWriter`
[INFO] [stdout]  --> src/decode.rs:4:51
[INFO] [stdout]   |
[INFO] [stdout] 4 | use bitstream_io::{BigEndian, BitRead, BitReader, BitWriter, ByteWrite, ByteWriter};
[INFO] [stdout]   |                                                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tree::Node`
[INFO] [stdout]   --> src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use tree::Node;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `max_encoded_length`, `number_of_symbols`, `to_list_for_canonical`, and `to_ordered_list`
[INFO] [stdout]   --> src/main.rs:17:22
[INFO] [stdout]    |
[INFO] [stdout] 17 | use crate::huffman::{max_encoded_length, number_of_symbols, to_list_for_canonical, to_ordered_list};
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::utils::open_file`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use crate::utils::open_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/encode.rs:5:32
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{BufReader, Read, Write};
[INFO] [stdout]   |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/decode.rs:3:26
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{BufReader, Read, Write};
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/entropie.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut occurences: HashMap<String, i32> = HashMap::new();
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/encode.rs:5:32
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{BufReader, Read, Write};
[INFO] [stdout]   |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/decode.rs:3:26
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{BufReader, Read, Write};
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/entropie.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut occurences: HashMap<String, i32> = HashMap::new();
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/huffman.rs:175:13
[INFO] [stdout]     |
[INFO] [stdout] 175 |     for (s, v) in list {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/huffman.rs:200:13
[INFO] [stdout]     |
[INFO] [stdout] 200 |     for (s, v) in list {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/encode.rs:166:17
[INFO] [stdout]     |
[INFO] [stdout] 166 |                 c => word = true
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/huffman.rs:175:13
[INFO] [stdout]     |
[INFO] [stdout] 175 |     for (s, v) in list {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/encode.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 |     let mut size_of_header:usize;
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/huffman.rs:200:13
[INFO] [stdout]     |
[INFO] [stdout] 200 |     for (s, v) in list {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/decode.rs:24:17
[INFO] [stdout]    |
[INFO] [stdout] 24 |     'outer: for i in 0..number_of_words{
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/decode.rs:34:25
[INFO] [stdout]    |
[INFO] [stdout] 34 |                     let mut word = s.clone();
[INFO] [stdout]    |                         ----^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/encode.rs:166:17
[INFO] [stdout]     |
[INFO] [stdout] 166 |                 c => word = true
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/encode.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 |     let mut size_of_header:usize;
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/decode.rs:24:17
[INFO] [stdout]    |
[INFO] [stdout] 24 |     'outer: for i in 0..number_of_words{
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/decode.rs:34:25
[INFO] [stdout]    |
[INFO] [stdout] 34 |                     let mut word = s.clone();
[INFO] [stdout]    |                         ----^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_binary_map` is never used
[INFO] [stdout]   --> src/tree.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Node {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn to_binary_map(&self) -> HashMap<String, String> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `string_to_binary` is never used
[INFO] [stdout]   --> src/utils.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn string_to_binary(s: String) -> Vec<u8> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `nb_mots` is never used
[INFO] [stdout]   --> src/utils.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn nb_mots(filePath: String) -> i32 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `filePath` should have a snake case name
[INFO] [stdout]   --> src/utils.rs:62:16
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn nb_mots(filePath: String) -> i32 {
[INFO] [stdout]    |                ^^^^^^^^ help: convert the identifier to snake case: `file_path`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_binary_map` is never used
[INFO] [stdout]   --> src/tree.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Node {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn to_binary_map(&self) -> HashMap<String, String> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `string_to_binary` is never used
[INFO] [stdout]   --> src/utils.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn string_to_binary(s: String) -> Vec<u8> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `nb_mots` is never used
[INFO] [stdout]   --> src/utils.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn nb_mots(filePath: String) -> i32 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `filePath` should have a snake case name
[INFO] [stdout]   --> src/utils.rs:62:16
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn nb_mots(filePath: String) -> i32 {
[INFO] [stdout]    |                ^^^^^^^^ help: convert the identifier to snake case: `file_path`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "c95571bc566489f6fa94d4a03d9b765e62fd44ea39d2099b85ce60f8cbbb4192", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c95571bc566489f6fa94d4a03d9b765e62fd44ea39d2099b85ce60f8cbbb4192", kill_on_drop: false }`
[INFO] [stdout] c95571bc566489f6fa94d4a03d9b765e62fd44ea39d2099b85ce60f8cbbb4192
