[INFO] cloning repository https://github.com/Roja-Eswaran/Rust_Multithreaded
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Roja-Eswaran/Rust_Multithreaded" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRoja-Eswaran%2FRust_Multithreaded", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRoja-Eswaran%2FRust_Multithreaded'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ed308c6e57e0a04404ffb60ea3cec1b8d8bb19d2
[INFO] checking Roja-Eswaran/Rust_Multithreaded/ed308c6e57e0a04404ffb60ea3cec1b8d8bb19d2 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRoja-Eswaran%2FRust_Multithreaded" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
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[INFO] [stderr] Updating files:  96% (611/636)
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[INFO] validating manifest of git repo https://github.com/Roja-Eswaran/Rust_Multithreaded on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Roja-Eswaran/Rust_Multithreaded
[INFO] finished tweaking git repo https://github.com/Roja-Eswaran/Rust_Multithreaded
[INFO] tweaked toml for git repo https://github.com/Roja-Eswaran/Rust_Multithreaded written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Roja-Eswaran/Rust_Multithreaded 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4c26091aec0af02b11fa8c0a71bc3240e557011349c598fa387bc1cc13ac5e5b
[INFO] running `Command { std: "docker" "start" "-a" "4c26091aec0af02b11fa8c0a71bc3240e557011349c598fa387bc1cc13ac5e5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c26091aec0af02b11fa8c0a71bc3240e557011349c598fa387bc1cc13ac5e5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c26091aec0af02b11fa8c0a71bc3240e557011349c598fa387bc1cc13ac5e5b", kill_on_drop: false }`
[INFO] [stdout] 4c26091aec0af02b11fa8c0a71bc3240e557011349c598fa387bc1cc13ac5e5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 505e3f3eebe7d65ab560f8c4cce8ce032879ff7f74722a5b107b844b41d6cf21
[INFO] running `Command { std: "docker" "start" "-a" "505e3f3eebe7d65ab560f8c4cce8ce032879ff7f74722a5b107b844b41d6cf21", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking libsteg v0.1.0 (/opt/rustwide/workdir/libsteg)
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking encode_decode_multi_thread v0.1.0 (/opt/rustwide/workdir/encode_decode_multi_thread)
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> encode_decode_multi_thread/src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::OpenOptions`
[INFO] [stdout]  --> encode_decode_multi_thread/src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::fs::OpenOptions;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::PathBuf`
[INFO] [stdout]   --> encode_decode_multi_thread/src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::path::PathBuf;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `ordering_decode_message` should have an upper camel case name
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:152:12
[INFO] [stdout]     |
[INFO] [stdout] 152 | pub struct ordering_decode_message {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `OrderingDecodeMessage`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:256:20
[INFO] [stdout]     |
[INFO] [stdout] 256 |                 if (index <= valid_files.len() - 1) {
[INFO] [stdout]     |                    ^                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 256 -                 if (index <= valid_files.len() - 1) {
[INFO] [stdout] 256 +                 if index <= valid_files.len() - 1 {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:320:16
[INFO] [stdout]     |
[INFO] [stdout] 320 |             if (index <= max_value - 1) {
[INFO] [stdout]     |                ^                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 320 -             if (index <= max_value - 1) {
[INFO] [stdout] 320 +             if index <= max_value - 1 {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:386:14
[INFO] [stdout]     |
[INFO] [stdout] 386 |     for j in (0..valid_files.len()){
[INFO] [stdout]     |              ^                    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 386 -     for j in (0..valid_files.len()){
[INFO] [stdout] 386 +     for j in 0..valid_files.len() {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> encode_decode_multi_thread/src/lib.rs:39:16
[INFO] [stdout]    |
[INFO] [stdout] 39 | type Job = Box<FnBox + Send + 'static>;
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 39 | type Job = Box<dyn FnBox + Send + 'static>;
[INFO] [stdout]    |                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `flag` is never read
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:195:17
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let mut flag = 0;
[INFO] [stdout]     |                 ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ppm`
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:197:17
[INFO] [stdout]     |
[INFO] [stdout] 197 |         let mut ppm = match libsteg::PPM::new(value.to_string()) {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_ppm`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:215:9
[INFO] [stdout]     |
[INFO] [stdout] 215 |     for i in 0..valid_files.len() {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fc`
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:224:9
[INFO] [stdout]     |
[INFO] [stdout] 224 |     let fc = required_number_files(&valid_files, &message);
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_fc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_message`
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:226:9
[INFO] [stdout]     |
[INFO] [stdout] 226 |     let new_message = message.clone();
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `start_index` is assigned to, but never used
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:233:13
[INFO] [stdout]     |
[INFO] [stdout] 233 |     let mut start_index = 0;
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_start_index` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message_vec`
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:238:9
[INFO] [stdout]     |
[INFO] [stdout] 238 |     let message_vec: Vec<char> = message.chars().collect();
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message_vec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:249:9
[INFO] [stdout]     |
[INFO] [stdout] 249 |     for i in 0..final_file_count {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `start_index` is never read
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:304:21
[INFO] [stdout]     |
[INFO] [stdout] 304 |                     start_index = 0;
[INFO] [stdout]     |                     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handle`
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:333:21
[INFO] [stdout]     |
[INFO] [stdout] 333 |                 let handle = pool.execute(move || {
[INFO] [stdout]     |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_handle`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:194:13
[INFO] [stdout]     |
[INFO] [stdout] 194 |         let mut value = &names[i];
[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: variable does not need to be mutable
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:197:13
[INFO] [stdout]     |
[INFO] [stdout] 197 |         let mut ppm = match libsteg::PPM::new(value.to_string()) {
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:235:9
[INFO] [stdout]     |
[INFO] [stdout] 235 |     let mut total_character_message = message.chars().count();
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:248:9
[INFO] [stdout]     |
[INFO] [stdout] 248 |     let mut final_file_count = required_number_files(&valid_files, &message);
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flag`
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:370:17
[INFO] [stdout]     |
[INFO] [stdout] 370 |         let mut flag = 0;
[INFO] [stdout]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_flag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ppm`
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:371:17
[INFO] [stdout]     |
[INFO] [stdout] 371 |         let mut ppm = match libsteg::PPM::new(value.to_string()) {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_ppm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handle`
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:395:21
[INFO] [stdout]     |
[INFO] [stdout] 395 |                 let handle = pool.execute(move || {
[INFO] [stdout]     |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_handle`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:406:13
[INFO] [stdout]     |
[INFO] [stdout] 406 |         for i in 0..valid_files.len(){
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:412:13
[INFO] [stdout]     |
[INFO] [stdout] 412 |         for i in arrange_message {
[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]    --> encode_decode_multi_thread/src/lib.rs:398:25
[INFO] [stdout]     |
[INFO] [stdout] 398 |                     let mut final_content = ordering_decode_message {
[INFO] [stdout]     |                         ----^^^^^^^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:368:13
[INFO] [stdout]     |
[INFO] [stdout] 368 |         let mut value = &names[i];
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:370:13
[INFO] [stdout]     |
[INFO] [stdout] 370 |         let mut flag = 0;
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:371:13
[INFO] [stdout]     |
[INFO] [stdout] 371 |         let mut ppm = match libsteg::PPM::new(value.to_string()) {
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:418:9
[INFO] [stdout]     |
[INFO] [stdout] 418 |     let mut file_format = ".ppm";
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:419:9
[INFO] [stdout]     |
[INFO] [stdout] 419 |     let mut concat_file = format!("{:07}{}", filename, file_format.to_string());
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:438:9
[INFO] [stdout]     |
[INFO] [stdout] 438 |     let mut total_character_message = message.chars().count();
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:439:9
[INFO] [stdout]     |
[INFO] [stdout] 439 |     let mut required_bytes = total_character_message * 8;
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:442:13
[INFO] [stdout]     |
[INFO] [stdout] 442 |         let mut ppm = match libsteg::PPM::new(valid_files[i].to_string()) {
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:451:9
[INFO] [stdout]     |
[INFO] [stdout] 451 |     let mut file_count: f64 = required_bytes as f64 / available_bytes as f64;
[INFO] [stdout]     |         ----^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:456:9
[INFO] [stdout]     |
[INFO] [stdout] 456 |     let mut total_required_null_bytes: u64 = file_count.ceil() as u64 * 8;
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `total_character_message`
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:476:13
[INFO] [stdout]     |
[INFO] [stdout] 476 |     let mut total_character_message = message.chars().count();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_total_character_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `encoded` is never read
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:498:5
[INFO] [stdout]     |
[INFO] [stdout] 498 |     encoded = vec![0u8; 0];
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:476:9
[INFO] [stdout]     |
[INFO] [stdout] 476 |     let mut total_character_message = message.chars().count();
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> encode_decode_multi_thread/src/lib.rs:99:5
[INFO] [stdout]    |
[INFO] [stdout] 98 | struct Worker {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 99 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `message` is never read
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:154:5
[INFO] [stdout]     |
[INFO] [stdout] 152 | pub struct ordering_decode_message {
[INFO] [stdout]     |            ----------------------- field in this struct
[INFO] [stdout] 153 |     arrival: u32,
[INFO] [stdout] 154 |     message: String,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: path statement drops value
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:200:17
[INFO] [stdout]     |
[INFO] [stdout] 200 |                 ppm;
[INFO] [stdout]     |                 ^^^^ help: use `drop` to clarify the intent: `drop(ppm);`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(path_statements)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:423:5
[INFO] [stdout]     |
[INFO] [stdout] 423 |     out_file.write_all(&ppm.header.magic_number);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 423 |     let _ = out_file.write_all(&ppm.header.magic_number);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:424:5
[INFO] [stdout]     |
[INFO] [stdout] 424 |     out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 424 |     let _ = out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:425:5
[INFO] [stdout]     |
[INFO] [stdout] 425 |     out_file.write_all(ppm.header.width.to_string().as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 425 |     let _ = out_file.write_all(ppm.header.width.to_string().as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:426:5
[INFO] [stdout]     |
[INFO] [stdout] 426 |     out_file.write_all(&" ".as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 426 |     let _ = out_file.write_all(&" ".as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:427:5
[INFO] [stdout]     |
[INFO] [stdout] 427 |     out_file.write_all(ppm.header.height.to_string().as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 427 |     let _ = out_file.write_all(ppm.header.height.to_string().as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:428:5
[INFO] [stdout]     |
[INFO] [stdout] 428 |     out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 428 |     let _ = out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:429:5
[INFO] [stdout]     |
[INFO] [stdout] 429 |     out_file.write_all(ppm.header.max_color_value.to_string().as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 429 |     let _ = out_file.write_all(ppm.header.max_color_value.to_string().as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:430:5
[INFO] [stdout]     |
[INFO] [stdout] 430 |     out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 430 |     let _ = out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:431:5
[INFO] [stdout]     |
[INFO] [stdout] 431 |     out_file.write_all(&bytes);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 431 |     let _ = out_file.write_all(&bytes);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> encode_decode_multi_thread/src/lib.rs:432:5
[INFO] [stdout]     |
[INFO] [stdout] 432 |     out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 432 |     let _ = out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 54 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking project04 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:26:20
[INFO] [stdout]    |
[INFO] [stdout] 26 |     type Job = Box<FnBox + Send + 'static>;
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 |     type Job = Box<dyn FnBox + Send + 'static>;
[INFO] [stdout]    |                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:26:20
[INFO] [stdout]    |
[INFO] [stdout] 26 |     type Job = Box<FnBox + Send + 'static>;
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 |     type Job = Box<dyn FnBox + Send + 'static>;
[INFO] [stdout]    |                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/lib.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |     struct Worker {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 86 |         id: usize,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/lib.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |     struct Worker {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 86 |         id: usize,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::OpenOptions`
[INFO] [stdout]  --> src/bin/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::fs::OpenOptions;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::PathBuf`
[INFO] [stdout]   --> src/bin/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::path::PathBuf;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::OpenOptions`
[INFO] [stdout]  --> src/bin/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::fs::OpenOptions;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]   --> src/bin/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::thread;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::PathBuf`
[INFO] [stdout]   --> src/bin/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::path::PathBuf;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `ordering_decode_message` should have an upper camel case name
[INFO] [stdout]   --> src/bin/main.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct ordering_decode_message {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `OrderingDecodeMessage`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]   --> src/bin/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::thread;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `ordering_decode_message` should have an upper camel case name
[INFO] [stdout]   --> src/bin/main.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct ordering_decode_message {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `OrderingDecodeMessage`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/bin/main.rs:71:22
[INFO] [stdout]    |
[INFO] [stdout] 71 |             for j in (0..valid_files.len()){
[INFO] [stdout]    |                      ^                    ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 71 -             for j in (0..valid_files.len()){
[INFO] [stdout] 71 +             for j in 0..valid_files.len() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/bin/main.rs:71:22
[INFO] [stdout]    |
[INFO] [stdout] 71 |             for j in (0..valid_files.len()){
[INFO] [stdout]    |                      ^                    ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 71 -             for j in (0..valid_files.len()){
[INFO] [stdout] 71 +             for j in 0..valid_files.len() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/bin/main.rs:186:28
[INFO] [stdout]     |
[INFO] [stdout] 186 |                         if (index <= valid_files.len() - 1) {
[INFO] [stdout]     |                            ^                              ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 186 -                         if (index <= valid_files.len() - 1) {
[INFO] [stdout] 186 +                         if index <= valid_files.len() - 1 {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/bin/main.rs:186:28
[INFO] [stdout]     |
[INFO] [stdout] 186 |                         if (index <= valid_files.len() - 1) {
[INFO] [stdout]     |                            ^                              ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 186 -                         if (index <= valid_files.len() - 1) {
[INFO] [stdout] 186 +                         if index <= valid_files.len() - 1 {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/bin/main.rs:250:24
[INFO] [stdout]     |
[INFO] [stdout] 250 |                     if (index <= max_value - 1) {
[INFO] [stdout]     |                        ^                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 250 -                     if (index <= max_value - 1) {
[INFO] [stdout] 250 +                     if index <= max_value - 1 {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/bin/main.rs:250:24
[INFO] [stdout]     |
[INFO] [stdout] 250 |                     if (index <= max_value - 1) {
[INFO] [stdout]     |                        ^                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 250 -                     if (index <= max_value - 1) {
[INFO] [stdout] 250 +                     if index <= max_value - 1 {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flag`
[INFO] [stdout]   --> src/bin/main.rs:55:25
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 let mut flag = 0;
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_flag`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ppm`
[INFO] [stdout]   --> src/bin/main.rs:56:25
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 let mut ppm = match libsteg::PPM::new(value.to_string()) {
[INFO] [stdout]    |                         ^^^ help: if this is intentional, prefix it with an underscore: `_ppm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handle`
[INFO] [stdout]   --> src/bin/main.rs:80:29
[INFO] [stdout]    |
[INFO] [stdout] 80 |                         let handle = pool.execute(move || {
[INFO] [stdout]    |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_handle`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/bin/main.rs:91:21
[INFO] [stdout]    |
[INFO] [stdout] 91 |                 for i in 0..valid_files.len(){
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `flag` is never read
[INFO] [stdout]    --> src/bin/main.rs:125:25
[INFO] [stdout]     |
[INFO] [stdout] 125 |                 let mut flag = 0;
[INFO] [stdout]     |                         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ppm`
[INFO] [stdout]    --> src/bin/main.rs:127:25
[INFO] [stdout]     |
[INFO] [stdout] 127 |                 let mut ppm = match libsteg::PPM::new(value.to_string()) {
[INFO] [stdout]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_ppm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/bin/main.rs:145:17
[INFO] [stdout]     |
[INFO] [stdout] 145 |             for i in 0..valid_files.len() {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fc`
[INFO] [stdout]    --> src/bin/main.rs:154:17
[INFO] [stdout]     |
[INFO] [stdout] 154 |             let fc = required_number_files(&valid_files, &message);
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_fc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_message`
[INFO] [stdout]    --> src/bin/main.rs:156:17
[INFO] [stdout]     |
[INFO] [stdout] 156 |             let new_message = message.clone();
[INFO] [stdout]     |                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `start_index` is assigned to, but never used
[INFO] [stdout]    --> src/bin/main.rs:163:21
[INFO] [stdout]     |
[INFO] [stdout] 163 |             let mut start_index = 0;
[INFO] [stdout]     |                     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_start_index` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message_vec`
[INFO] [stdout]    --> src/bin/main.rs:168:17
[INFO] [stdout]     |
[INFO] [stdout] 168 |             let message_vec: Vec<char> = message.chars().collect();
[INFO] [stdout]     |                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message_vec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/bin/main.rs:179:17
[INFO] [stdout]     |
[INFO] [stdout] 179 |             for i in 0..final_file_count {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `start_index` is never read
[INFO] [stdout]    --> src/bin/main.rs:234:29
[INFO] [stdout]     |
[INFO] [stdout] 234 | ...                   start_index = 0;
[INFO] [stdout]     |                       ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handle`
[INFO] [stdout]    --> src/bin/main.rs:263:29
[INFO] [stdout]     |
[INFO] [stdout] 263 |                         let handle = pool.execute(move || {
[INFO] [stdout]     |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_handle`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flag`
[INFO] [stdout]   --> src/bin/main.rs:55:25
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 let mut flag = 0;
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_flag`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ppm`
[INFO] [stdout]   --> src/bin/main.rs:56:25
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 let mut ppm = match libsteg::PPM::new(value.to_string()) {
[INFO] [stdout]    |                         ^^^ help: if this is intentional, prefix it with an underscore: `_ppm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handle`
[INFO] [stdout]   --> src/bin/main.rs:80:29
[INFO] [stdout]    |
[INFO] [stdout] 80 |                         let handle = pool.execute(move || {
[INFO] [stdout]    |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_handle`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/bin/main.rs:91:21
[INFO] [stdout]    |
[INFO] [stdout] 91 |                 for i in 0..valid_files.len(){
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `flag` is never read
[INFO] [stdout]    --> src/bin/main.rs:125:25
[INFO] [stdout]     |
[INFO] [stdout] 125 |                 let mut flag = 0;
[INFO] [stdout]     |                         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ppm`
[INFO] [stdout]    --> src/bin/main.rs:127:25
[INFO] [stdout]     |
[INFO] [stdout] 127 |                 let mut ppm = match libsteg::PPM::new(value.to_string()) {
[INFO] [stdout]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_ppm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/bin/main.rs:145:17
[INFO] [stdout]     |
[INFO] [stdout] 145 |             for i in 0..valid_files.len() {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fc`
[INFO] [stdout]    --> src/bin/main.rs:154:17
[INFO] [stdout]     |
[INFO] [stdout] 154 |             let fc = required_number_files(&valid_files, &message);
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_fc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_message`
[INFO] [stdout]    --> src/bin/main.rs:156:17
[INFO] [stdout]     |
[INFO] [stdout] 156 |             let new_message = message.clone();
[INFO] [stdout]     |                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `start_index` is assigned to, but never used
[INFO] [stdout]    --> src/bin/main.rs:163:21
[INFO] [stdout]     |
[INFO] [stdout] 163 |             let mut start_index = 0;
[INFO] [stdout]     |                     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_start_index` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message_vec`
[INFO] [stdout]    --> src/bin/main.rs:168:17
[INFO] [stdout]     |
[INFO] [stdout] 168 |             let message_vec: Vec<char> = message.chars().collect();
[INFO] [stdout]     |                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message_vec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/bin/main.rs:179:17
[INFO] [stdout]     |
[INFO] [stdout] 179 |             for i in 0..final_file_count {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `start_index` is never read
[INFO] [stdout]    --> src/bin/main.rs:234:29
[INFO] [stdout]     |
[INFO] [stdout] 234 | ...                   start_index = 0;
[INFO] [stdout]     |                       ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handle`
[INFO] [stdout]    --> src/bin/main.rs:263:29
[INFO] [stdout]     |
[INFO] [stdout] 263 |                         let handle = pool.execute(move || {
[INFO] [stdout]     |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_handle`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/main.rs:83:33
[INFO] [stdout]    |
[INFO] [stdout] 83 | ...                   let mut final_content = ordering_decode_message {
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/main.rs:53:21
[INFO] [stdout]    |
[INFO] [stdout] 53 |                 let mut value = &names[i];
[INFO] [stdout]    |                     ----^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/main.rs:55:21
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 let mut flag = 0;
[INFO] [stdout]    |                     ----^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/main.rs:56:21
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 let mut ppm = match libsteg::PPM::new(value.to_string()) {
[INFO] [stdout]    |                     ----^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:124:21
[INFO] [stdout]     |
[INFO] [stdout] 124 |                 let mut value = &names[i];
[INFO] [stdout]     |                     ----^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:127:21
[INFO] [stdout]     |
[INFO] [stdout] 127 |                 let mut ppm = match libsteg::PPM::new(value.to_string()) {
[INFO] [stdout]     |                     ----^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:165:17
[INFO] [stdout]     |
[INFO] [stdout] 165 |             let mut total_character_message = message.chars().count();
[INFO] [stdout]     |                 ----^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:178:17
[INFO] [stdout]     |
[INFO] [stdout] 178 |             let mut final_file_count = required_number_files(&valid_files, &message);
[INFO] [stdout]     |                 ----^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:286:9
[INFO] [stdout]     |
[INFO] [stdout] 286 |     let mut file_format = ".ppm";
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:287:9
[INFO] [stdout]     |
[INFO] [stdout] 287 |     let mut concat_file = format!("{:07}{}", filename, file_format.to_string());
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/main.rs:83:33
[INFO] [stdout]    |
[INFO] [stdout] 83 | ...                   let mut final_content = ordering_decode_message {
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:306:9
[INFO] [stdout]     |
[INFO] [stdout] 306 |     let mut total_character_message = message.chars().count();
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:307:9
[INFO] [stdout]     |
[INFO] [stdout] 307 |     let mut required_bytes = total_character_message * 8;
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:310:13
[INFO] [stdout]     |
[INFO] [stdout] 310 |         let mut ppm = match libsteg::PPM::new(valid_files[i].to_string()) {
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:316:9
[INFO] [stdout]     |
[INFO] [stdout] 316 |     let mut file_count: f64 = required_bytes as f64 / available_bytes as f64;
[INFO] [stdout]     |         ----^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:319:9
[INFO] [stdout]     |
[INFO] [stdout] 319 |     let mut total_required_null_bytes: u64 = file_count.ceil() as u64 * 8;
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `total_character_message`
[INFO] [stdout]    --> src/bin/main.rs:340:13
[INFO] [stdout]     |
[INFO] [stdout] 340 |     let mut total_character_message = message.chars().count();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_total_character_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `encoded` is never read
[INFO] [stdout]    --> src/bin/main.rs:362:5
[INFO] [stdout]     |
[INFO] [stdout] 362 |     encoded = vec![0u8; 0];
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:340:9
[INFO] [stdout]     |
[INFO] [stdout] 340 |     let mut total_character_message = message.chars().count();
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/main.rs:53:21
[INFO] [stdout]    |
[INFO] [stdout] 53 |                 let mut value = &names[i];
[INFO] [stdout]    |                     ----^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/main.rs:55:21
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 let mut flag = 0;
[INFO] [stdout]    |                     ----^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/main.rs:56:21
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 let mut ppm = match libsteg::PPM::new(value.to_string()) {
[INFO] [stdout]    |                     ----^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:124:21
[INFO] [stdout]     |
[INFO] [stdout] 124 |                 let mut value = &names[i];
[INFO] [stdout]     |                     ----^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:127:21
[INFO] [stdout]     |
[INFO] [stdout] 127 |                 let mut ppm = match libsteg::PPM::new(value.to_string()) {
[INFO] [stdout]     |                     ----^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:165:17
[INFO] [stdout]     |
[INFO] [stdout] 165 |             let mut total_character_message = message.chars().count();
[INFO] [stdout]     |                 ----^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:178:17
[INFO] [stdout]     |
[INFO] [stdout] 178 |             let mut final_file_count = required_number_files(&valid_files, &message);
[INFO] [stdout]     |                 ----^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:286:9
[INFO] [stdout]     |
[INFO] [stdout] 286 |     let mut file_format = ".ppm";
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:287:9
[INFO] [stdout]     |
[INFO] [stdout] 287 |     let mut concat_file = format!("{:07}{}", filename, file_format.to_string());
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:306:9
[INFO] [stdout]     |
[INFO] [stdout] 306 |     let mut total_character_message = message.chars().count();
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:307:9
[INFO] [stdout]     |
[INFO] [stdout] 307 |     let mut required_bytes = total_character_message * 8;
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:310:13
[INFO] [stdout]     |
[INFO] [stdout] 310 |         let mut ppm = match libsteg::PPM::new(valid_files[i].to_string()) {
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:316:9
[INFO] [stdout]     |
[INFO] [stdout] 316 |     let mut file_count: f64 = required_bytes as f64 / available_bytes as f64;
[INFO] [stdout]     |         ----^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:319:9
[INFO] [stdout]     |
[INFO] [stdout] 319 |     let mut total_required_null_bytes: u64 = file_count.ceil() as u64 * 8;
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `total_character_message`
[INFO] [stdout]    --> src/bin/main.rs:340:13
[INFO] [stdout]     |
[INFO] [stdout] 340 |     let mut total_character_message = message.chars().count();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_total_character_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `encoded` is never read
[INFO] [stdout]    --> src/bin/main.rs:362:5
[INFO] [stdout]     |
[INFO] [stdout] 362 |     encoded = vec![0u8; 0];
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/main.rs:340:9
[INFO] [stdout]     |
[INFO] [stdout] 340 |     let mut total_character_message = message.chars().count();
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/main.rs:98:21
[INFO] [stdout]    |
[INFO] [stdout] 98 |                     io::stdout().write(&i.message.as_bytes());
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 98 |                     let _ = io::stdout().write(&i.message.as_bytes());
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: path statement drops value
[INFO] [stdout]    --> src/bin/main.rs:130:25
[INFO] [stdout]     |
[INFO] [stdout] 130 |                         ppm;
[INFO] [stdout]     |                         ^^^^ help: use `drop` to clarify the intent: `drop(ppm);`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(path_statements)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:291:5
[INFO] [stdout]     |
[INFO] [stdout] 291 |     out_file.write_all(&ppm.header.magic_number);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 291 |     let _ = out_file.write_all(&ppm.header.magic_number);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:292:5
[INFO] [stdout]     |
[INFO] [stdout] 292 |     out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 292 |     let _ = out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:293:5
[INFO] [stdout]     |
[INFO] [stdout] 293 |     out_file.write_all(ppm.header.width.to_string().as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 293 |     let _ = out_file.write_all(ppm.header.width.to_string().as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:294:5
[INFO] [stdout]     |
[INFO] [stdout] 294 |     out_file.write_all(&" ".as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 294 |     let _ = out_file.write_all(&" ".as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:295:5
[INFO] [stdout]     |
[INFO] [stdout] 295 |     out_file.write_all(ppm.header.height.to_string().as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 295 |     let _ = out_file.write_all(ppm.header.height.to_string().as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:296:5
[INFO] [stdout]     |
[INFO] [stdout] 296 |     out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 296 |     let _ = out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:297:5
[INFO] [stdout]     |
[INFO] [stdout] 297 |     out_file.write_all(ppm.header.max_color_value.to_string().as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 297 |     let _ = out_file.write_all(ppm.header.max_color_value.to_string().as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:298:5
[INFO] [stdout]     |
[INFO] [stdout] 298 |     out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 298 |     let _ = out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:299:5
[INFO] [stdout]     |
[INFO] [stdout] 299 |     out_file.write_all(&bytes);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 299 |     let _ = out_file.write_all(&bytes);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:300:5
[INFO] [stdout]     |
[INFO] [stdout] 300 |     out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 300 |     let _ = out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/main.rs:98:21
[INFO] [stdout]    |
[INFO] [stdout] 98 |                     io::stdout().write(&i.message.as_bytes());
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 98 |                     let _ = io::stdout().write(&i.message.as_bytes());
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: path statement drops value
[INFO] [stdout]    --> src/bin/main.rs:130:25
[INFO] [stdout]     |
[INFO] [stdout] 130 |                         ppm;
[INFO] [stdout]     |                         ^^^^ help: use `drop` to clarify the intent: `drop(ppm);`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(path_statements)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:291:5
[INFO] [stdout]     |
[INFO] [stdout] 291 |     out_file.write_all(&ppm.header.magic_number);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 291 |     let _ = out_file.write_all(&ppm.header.magic_number);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:292:5
[INFO] [stdout]     |
[INFO] [stdout] 292 |     out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 292 |     let _ = out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:293:5
[INFO] [stdout]     |
[INFO] [stdout] 293 |     out_file.write_all(ppm.header.width.to_string().as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 293 |     let _ = out_file.write_all(ppm.header.width.to_string().as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:294:5
[INFO] [stdout]     |
[INFO] [stdout] 294 |     out_file.write_all(&" ".as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 294 |     let _ = out_file.write_all(&" ".as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:295:5
[INFO] [stdout]     |
[INFO] [stdout] 295 |     out_file.write_all(ppm.header.height.to_string().as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 295 |     let _ = out_file.write_all(ppm.header.height.to_string().as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:296:5
[INFO] [stdout]     |
[INFO] [stdout] 296 |     out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 296 |     let _ = out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:297:5
[INFO] [stdout]     |
[INFO] [stdout] 297 |     out_file.write_all(ppm.header.max_color_value.to_string().as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 297 |     let _ = out_file.write_all(ppm.header.max_color_value.to_string().as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:298:5
[INFO] [stdout]     |
[INFO] [stdout] 298 |     out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 298 |     let _ = out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:299:5
[INFO] [stdout]     |
[INFO] [stdout] 299 |     out_file.write_all(&bytes);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 299 |     let _ = out_file.write_all(&bytes);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:300:5
[INFO] [stdout]     |
[INFO] [stdout] 300 |     out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 300 |     let _ = out_file.write_all(&"\n".as_bytes());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 51 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 51 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "505e3f3eebe7d65ab560f8c4cce8ce032879ff7f74722a5b107b844b41d6cf21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "505e3f3eebe7d65ab560f8c4cce8ce032879ff7f74722a5b107b844b41d6cf21", kill_on_drop: false }`
[INFO] [stdout] 505e3f3eebe7d65ab560f8c4cce8ce032879ff7f74722a5b107b844b41d6cf21