[INFO] cloning repository https://github.com/CharonWu/Cover-Art-Changer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CharonWu/Cover-Art-Changer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCharonWu%2FCover-Art-Changer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCharonWu%2FCover-Art-Changer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 34257f890c50c7d7ee2e18d6f223fb105db614db
[INFO] checking CharonWu/Cover-Art-Changer/34257f890c50c7d7ee2e18d6f223fb105db614db against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCharonWu%2FCover-Art-Changer" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CharonWu/Cover-Art-Changer 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/CharonWu/Cover-Art-Changer
[INFO] finished tweaking git repo https://github.com/CharonWu/Cover-Art-Changer
[INFO] tweaked toml for git repo https://github.com/CharonWu/Cover-Art-Changer written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/CharonWu/Cover-Art-Changer 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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 4c3016a465ad51fedcba63792a6da6a939dec77c8b0410753293a766366d7a8f
[INFO] running `Command { std: "docker" "start" "-a" "4c3016a465ad51fedcba63792a6da6a939dec77c8b0410753293a766366d7a8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c3016a465ad51fedcba63792a6da6a939dec77c8b0410753293a766366d7a8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c3016a465ad51fedcba63792a6da6a939dec77c8b0410753293a766366d7a8f", kill_on_drop: false }`
[INFO] [stdout] 4c3016a465ad51fedcba63792a6da6a939dec77c8b0410753293a766366d7a8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] da9902bfbe6a495748e1e0704b26fc7fce4bc1f96aa31e1bcdb1b62607e1d492
[INFO] running `Command { std: "docker" "start" "-a" "da9902bfbe6a495748e1e0704b26fc7fce4bc1f96aa31e1bcdb1b62607e1d492", kill_on_drop: false }`
[INFO] [stderr]     Checking cover_art_changer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/audio/flac.rs:39:17
[INFO] [stdout]    |
[INFO] [stdout] 39 |             Err(e) => {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/audio/flac.rs:39:17
[INFO] [stdout]    |
[INFO] [stdout] 39 |             Err(e) => {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `metadata_length`
[INFO] [stdout]    --> src/audio/flac.rs:204:13
[INFO] [stdout]     |
[INFO] [stdout] 204 |         let metadata_length = bytes_to_u32(&stream[pic_block_i..(pic_block_i + 4)]);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_metadata_length`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pic_description`
[INFO] [stdout]    --> src/audio/flac.rs:217:13
[INFO] [stdout]     |
[INFO] [stdout] 217 |         let pic_description =
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pic_description`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pic_width`
[INFO] [stdout]    --> src/audio/flac.rs:221:13
[INFO] [stdout]     |
[INFO] [stdout] 221 |         let pic_width = bytes_to_u32(&stream[pic_block_i..(pic_block_i + 4)]);
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pic_width`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pic_height`
[INFO] [stdout]    --> src/audio/flac.rs:224:13
[INFO] [stdout]     |
[INFO] [stdout] 224 |         let pic_height = bytes_to_u32(&stream[pic_block_i..(pic_block_i + 4)]);
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pic_height`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color_depth`
[INFO] [stdout]    --> src/audio/flac.rs:227:13
[INFO] [stdout]     |
[INFO] [stdout] 227 |         let color_depth = bytes_to_u32(&stream[pic_block_i..(pic_block_i + 4)]);
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_color_depth`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color_index`
[INFO] [stdout]    --> src/audio/flac.rs:230:13
[INFO] [stdout]     |
[INFO] [stdout] 230 |         let color_index = bytes_to_u32(&stream[pic_block_i..(pic_block_i + 4)]);
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_color_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `metadata_length`
[INFO] [stdout]    --> src/audio/flac.rs:204:13
[INFO] [stdout]     |
[INFO] [stdout] 204 |         let metadata_length = bytes_to_u32(&stream[pic_block_i..(pic_block_i + 4)]);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_metadata_length`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pic_description`
[INFO] [stdout]    --> src/audio/flac.rs:217:13
[INFO] [stdout]     |
[INFO] [stdout] 217 |         let pic_description =
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pic_description`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `audio_files` is never read
[INFO] [stdout]   --> src/audio/mod.rs:34:21
[INFO] [stdout]    |
[INFO] [stdout] 34 |             let mut audio_files: Vec<String> = Vec::new();
[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: `pic_width`
[INFO] [stdout]    --> src/audio/flac.rs:221:13
[INFO] [stdout]     |
[INFO] [stdout] 221 |         let pic_width = bytes_to_u32(&stream[pic_block_i..(pic_block_i + 4)]);
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pic_width`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pic_height`
[INFO] [stdout]    --> src/audio/flac.rs:224:13
[INFO] [stdout]     |
[INFO] [stdout] 224 |         let pic_height = bytes_to_u32(&stream[pic_block_i..(pic_block_i + 4)]);
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pic_height`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color_depth`
[INFO] [stdout]    --> src/audio/flac.rs:227:13
[INFO] [stdout]     |
[INFO] [stdout] 227 |         let color_depth = bytes_to_u32(&stream[pic_block_i..(pic_block_i + 4)]);
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_color_depth`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color_index`
[INFO] [stdout]    --> src/audio/flac.rs:230:13
[INFO] [stdout]     |
[INFO] [stdout] 230 |         let color_index = bytes_to_u32(&stream[pic_block_i..(pic_block_i + 4)]);
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_color_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `audio_files` is never read
[INFO] [stdout]   --> src/audio/mod.rs:34:21
[INFO] [stdout]    |
[INFO] [stdout] 34 |             let mut audio_files: Vec<String> = Vec::new();
[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: `e`
[INFO] [stdout]  --> src/image/mod.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 |             Err(e) => Err(ReadFileError::FilePathError(
[INFO] [stdout]   |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]  --> src/image/mod.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 |             Err(e) => Err(ReadFileError::FilePathError(
[INFO] [stdout]   |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Image` should have a snake case name
[INFO] [stdout]  --> src/image/mod.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod Image {
[INFO] [stdout]   |         ^^^^^ help: convert the identifier to snake case (notice the capitalization): `image`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Image` should have a snake case name
[INFO] [stdout]  --> src/image/mod.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod Image {
[INFO] [stdout]   |         ^^^^^ help: convert the identifier to snake case (notice the capitalization): `image`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "da9902bfbe6a495748e1e0704b26fc7fce4bc1f96aa31e1bcdb1b62607e1d492", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da9902bfbe6a495748e1e0704b26fc7fce4bc1f96aa31e1bcdb1b62607e1d492", kill_on_drop: false }`
[INFO] [stdout] da9902bfbe6a495748e1e0704b26fc7fce4bc1f96aa31e1bcdb1b62607e1d492