[INFO] cloning repository https://github.com/jbouhadoun/ppm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jbouhadoun/ppm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjbouhadoun%2Fppm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjbouhadoun%2Fppm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bc5c46186a7c28e4b2d8ca6624fd437095bc03fd
[INFO] checking jbouhadoun/ppm against try#ac4c3613be2acd5395b65d85e5657b81e3c982f0 for pr-154585
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjbouhadoun%2Fppm" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jbouhadoun/ppm
[INFO] finished tweaking git repo https://github.com/jbouhadoun/ppm
[INFO] tweaked toml for git repo https://github.com/jbouhadoun/ppm written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jbouhadoun/ppm on toolchain ac4c3613be2acd5395b65d85e5657b81e3c982f0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jbouhadoun/ppm 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" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: file `/workspace/builds/worker-5-tc2/source/src/main.rs` found to be present in multiple build targets:
[INFO] [stderr]   * `lib` target `src`
[INFO] [stderr]   * `bin` target `ppm`
[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 cty v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6dab58c59e3245f980c4841d09246580cb0632da822d7e8a34c3dabfa6241ed6
[INFO] running `Command { std: "docker" "start" "-a" "6dab58c59e3245f980c4841d09246580cb0632da822d7e8a34c3dabfa6241ed6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6dab58c59e3245f980c4841d09246580cb0632da822d7e8a34c3dabfa6241ed6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dab58c59e3245f980c4841d09246580cb0632da822d7e8a34c3dabfa6241ed6", kill_on_drop: false }`
[INFO] [stdout] 6dab58c59e3245f980c4841d09246580cb0632da822d7e8a34c3dabfa6241ed6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af0af528f26a2ef6693113fc37316a3b80c7072db8dd0b72f181854af711b1f8
[INFO] running `Command { std: "docker" "start" "-a" "af0af528f26a2ef6693113fc37316a3b80c7072db8dd0b72f181854af711b1f8", kill_on_drop: false }`
[INFO] [stderr] warning: file `/opt/rustwide/workdir/src/main.rs` found to be present in multiple build targets:
[INFO] [stderr]   * `lib` target `src`
[INFO] [stderr]   * `bin` target `ppm`
[INFO] [stderr]    Compiling ppm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking cty v0.2.1
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]    --> src/main.rs:237:5
[INFO] [stdout]     |
[INFO] [stdout] 237 | pub extern fn dummy() -> usize {
[INFO] [stdout]     |     ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]    --> src/main.rs:237:5
[INFO] [stdout]     |
[INFO] [stdout] 237 | pub extern fn dummy() -> usize {
[INFO] [stdout]     |     ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `readPPM` is never used
[INFO] [stdout]    --> src/main.rs:220:4
[INFO] [stdout]     |
[INFO] [stdout] 220 | fn readPPM (a:&str){
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square` is never used
[INFO] [stdout]    --> src/main.rs:214:8
[INFO] [stdout]     |
[INFO] [stdout] 214 |     fn square(val: i32) -> i32;
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ppma_read_test` is never used
[INFO] [stdout]    --> src/main.rs:216:8
[INFO] [stdout]     |
[INFO] [stdout] 216 |     fn ppma_read_test ( inputname: *const u8 );
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `readPPM` should have a snake case name
[INFO] [stdout]    --> src/main.rs:220:4
[INFO] [stdout]     |
[INFO] [stdout] 220 | fn readPPM (a:&str){
[INFO] [stdout]     |    ^^^^^^^ help: convert the identifier to snake case: `read_ppm`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `writePPM` should have a snake case name
[INFO] [stdout]    --> src/main.rs:226:4
[INFO] [stdout]     |
[INFO] [stdout] 226 | fn writePPM (a:&str){
[INFO] [stdout]     |    ^^^^^^^^ help: convert the identifier to snake case: `write_ppm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `pxl_INV` should have a snake case name
[INFO] [stdout]    --> src/main.rs:368:13
[INFO] [stdout]     |
[INFO] [stdout] 368 |         let pxl_INV = Pixel::new(245,245,245);
[INFO] [stdout]     |             ^^^^^^^ help: convert the identifier to snake case: `pxl_inv`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `pxl2_INV` should have a snake case name
[INFO] [stdout]    --> src/main.rs:369:13
[INFO] [stdout]     |
[INFO] [stdout] 369 |         let pxl2_INV = Pixel::new(100,100,100);
[INFO] [stdout]     |             ^^^^^^^^ help: convert the identifier to snake case: `pxl2_inv`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `data_INV` should have a snake case name
[INFO] [stdout]    --> src/main.rs:370:13
[INFO] [stdout]     |
[INFO] [stdout] 370 |         let data_INV = vec![pxl_INV,pxl2_INV,pxl_INV,pxl2_INV,pxl_INV,pxl2_INV];
[INFO] [stdout]     |             ^^^^^^^^ help: convert the identifier to snake case: `data_inv`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `image_INV` should have a snake case name
[INFO] [stdout]    --> src/main.rs:377:13
[INFO] [stdout]     |
[INFO] [stdout] 377 |         let image_INV= image.invert();
[INFO] [stdout]     |             ^^^^^^^^^ help: convert the identifier to snake case: `image_inv`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:435:9
[INFO] [stdout]     |
[INFO] [stdout] 435 |         image.save(&path);
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 435 |         let _ = image.save(&path);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_red`, `get_green`, and `get_blue` are never used
[INFO] [stdout]   --> src/main.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl Pixel {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 29 |     fn get_red (self) -> u8 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn get_green (self) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn get_blue (self) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `filename_to_string` is never used
[INFO] [stdout]    --> src/main.rs:176:4
[INFO] [stdout]     |
[INFO] [stdout] 176 | fn filename_to_string(s: &str) -> io::Result<String> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `words_by_line` is never used
[INFO] [stdout]    --> src/main.rs:183:4
[INFO] [stdout]     |
[INFO] [stdout] 183 | fn words_by_line<'a>(s: &'a str) -> Vec<Vec<&'a str>> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `file_to_image` is never used
[INFO] [stdout]    --> src/main.rs:190:4
[INFO] [stdout]     |
[INFO] [stdout] 190 | fn file_to_image<'a>(path: &'a str) -> Image{
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `readPPM` is never used
[INFO] [stdout]    --> src/main.rs:220:4
[INFO] [stdout]     |
[INFO] [stdout] 220 | fn readPPM (a:&str){
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `writePPM` is never used
[INFO] [stdout]    --> src/main.rs:226:4
[INFO] [stdout]     |
[INFO] [stdout] 226 | fn writePPM (a:&str){
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]    --> src/main.rs:243:4
[INFO] [stdout]     |
[INFO] [stdout] 243 | fn main() {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square` is never used
[INFO] [stdout]    --> src/main.rs:214:8
[INFO] [stdout]     |
[INFO] [stdout] 214 |     fn square(val: i32) -> i32;
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ppma_write_test` is never used
[INFO] [stdout]    --> src/main.rs:215:9
[INFO] [stdout]     |
[INFO] [stdout] 215 |      fn ppma_write_test ( file_out_name: *const u8);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ppma_read_test` is never used
[INFO] [stdout]    --> src/main.rs:216:8
[INFO] [stdout]     |
[INFO] [stdout] 216 |     fn ppma_read_test ( inputname: *const u8 );
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `readPPM` should have a snake case name
[INFO] [stdout]    --> src/main.rs:220:4
[INFO] [stdout]     |
[INFO] [stdout] 220 | fn readPPM (a:&str){
[INFO] [stdout]     |    ^^^^^^^ help: convert the identifier to snake case: `read_ppm`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `writePPM` should have a snake case name
[INFO] [stdout]    --> src/main.rs:226:4
[INFO] [stdout]     |
[INFO] [stdout] 226 | fn writePPM (a:&str){
[INFO] [stdout]     |    ^^^^^^^^ help: convert the identifier to snake case: `write_ppm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]    --> src/main.rs:237:5
[INFO] [stdout]     |
[INFO] [stdout] 237 | pub extern fn dummy() -> usize {
[INFO] [stdout]     |     ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]    --> src/main.rs:237:5
[INFO] [stdout]     |
[INFO] [stdout] 237 | pub extern fn dummy() -> usize {
[INFO] [stdout]     |     ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_red`, `get_green`, and `get_blue` are never used
[INFO] [stdout]   --> src/main.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl Pixel {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 29 |     fn get_red (self) -> u8 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn get_green (self) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn get_blue (self) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `filename_to_string` is never used
[INFO] [stdout]    --> src/main.rs:176:4
[INFO] [stdout]     |
[INFO] [stdout] 176 | fn filename_to_string(s: &str) -> io::Result<String> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `words_by_line` is never used
[INFO] [stdout]    --> src/main.rs:183:4
[INFO] [stdout]     |
[INFO] [stdout] 183 | fn words_by_line<'a>(s: &'a str) -> Vec<Vec<&'a str>> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `file_to_image` is never used
[INFO] [stdout]    --> src/main.rs:190:4
[INFO] [stdout]     |
[INFO] [stdout] 190 | fn file_to_image<'a>(path: &'a str) -> Image{
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `readPPM` is never used
[INFO] [stdout]    --> src/main.rs:220:4
[INFO] [stdout]     |
[INFO] [stdout] 220 | fn readPPM (a:&str){
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square` is never used
[INFO] [stdout]    --> src/main.rs:214:8
[INFO] [stdout]     |
[INFO] [stdout] 214 |     fn square(val: i32) -> i32;
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ppma_read_test` is never used
[INFO] [stdout]    --> src/main.rs:216:8
[INFO] [stdout]     |
[INFO] [stdout] 216 |     fn ppma_read_test ( inputname: *const u8 );
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `readPPM` should have a snake case name
[INFO] [stdout]    --> src/main.rs:220:4
[INFO] [stdout]     |
[INFO] [stdout] 220 | fn readPPM (a:&str){
[INFO] [stdout]     |    ^^^^^^^ help: convert the identifier to snake case: `read_ppm`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `writePPM` should have a snake case name
[INFO] [stdout]    --> src/main.rs:226:4
[INFO] [stdout]     |
[INFO] [stdout] 226 | fn writePPM (a:&str){
[INFO] [stdout]     |    ^^^^^^^^ help: convert the identifier to snake case: `write_ppm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `readPPM` is never used
[INFO] [stdout]    --> src/main.rs:220:4
[INFO] [stdout]     |
[INFO] [stdout] 220 | fn readPPM (a:&str){
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square` is never used
[INFO] [stdout]    --> src/main.rs:214:8
[INFO] [stdout]     |
[INFO] [stdout] 214 |     fn square(val: i32) -> i32;
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ppma_read_test` is never used
[INFO] [stdout]    --> src/main.rs:216:8
[INFO] [stdout]     |
[INFO] [stdout] 216 |     fn ppma_read_test ( inputname: *const u8 );
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `readPPM` should have a snake case name
[INFO] [stdout]    --> src/main.rs:220:4
[INFO] [stdout]     |
[INFO] [stdout] 220 | fn readPPM (a:&str){
[INFO] [stdout]     |    ^^^^^^^ help: convert the identifier to snake case: `read_ppm`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `writePPM` should have a snake case name
[INFO] [stdout]    --> src/main.rs:226:4
[INFO] [stdout]     |
[INFO] [stdout] 226 | fn writePPM (a:&str){
[INFO] [stdout]     |    ^^^^^^^^ help: convert the identifier to snake case: `write_ppm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `pxl_INV` should have a snake case name
[INFO] [stdout]    --> src/main.rs:368:13
[INFO] [stdout]     |
[INFO] [stdout] 368 |         let pxl_INV = Pixel::new(245,245,245);
[INFO] [stdout]     |             ^^^^^^^ help: convert the identifier to snake case: `pxl_inv`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `pxl2_INV` should have a snake case name
[INFO] [stdout]    --> src/main.rs:369:13
[INFO] [stdout]     |
[INFO] [stdout] 369 |         let pxl2_INV = Pixel::new(100,100,100);
[INFO] [stdout]     |             ^^^^^^^^ help: convert the identifier to snake case: `pxl2_inv`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `data_INV` should have a snake case name
[INFO] [stdout]    --> src/main.rs:370:13
[INFO] [stdout]     |
[INFO] [stdout] 370 |         let data_INV = vec![pxl_INV,pxl2_INV,pxl_INV,pxl2_INV,pxl_INV,pxl2_INV];
[INFO] [stdout]     |             ^^^^^^^^ help: convert the identifier to snake case: `data_inv`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `image_INV` should have a snake case name
[INFO] [stdout]    --> src/main.rs:377:13
[INFO] [stdout]     |
[INFO] [stdout] 377 |         let image_INV= image.invert();
[INFO] [stdout]     |             ^^^^^^^^^ help: convert the identifier to snake case: `image_inv`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:435:9
[INFO] [stdout]     |
[INFO] [stdout] 435 |         image.save(&path);
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 435 |         let _ = image.save(&path);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "af0af528f26a2ef6693113fc37316a3b80c7072db8dd0b72f181854af711b1f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af0af528f26a2ef6693113fc37316a3b80c7072db8dd0b72f181854af711b1f8", kill_on_drop: false }`
[INFO] [stdout] af0af528f26a2ef6693113fc37316a3b80c7072db8dd0b72f181854af711b1f8
