[INFO] crate binny 0.1.1 is already in cache
[INFO] checking binny-0.1.1 against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] extracting crate binny 0.1.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate binny 0.1.1 on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate binny 0.1.1
[INFO] finished tweaking crates.io crate binny 0.1.1
[INFO] tweaked toml for crates.io crate binny 0.1.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7a86f2dcb2f498e0e912bc4df1715f1ae4e8a961d804dd514fec3ce8653d9571
[INFO] running `"docker" "start" "-a" "7a86f2dcb2f498e0e912bc4df1715f1ae4e8a961d804dd514fec3ce8653d9571"`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]     Checking binny v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `look_up`
[INFO] [stderr]    --> src/mp3.rs:151:21
[INFO] [stderr]     |
[INFO] [stderr] 151 |                 let look_up = match layer
[INFO] [stderr]     |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_look_up`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `look_up`
[INFO] [stderr]    --> src/mp3.rs:159:21
[INFO] [stderr]     |
[INFO] [stderr] 159 |                 let look_up = match layer
[INFO] [stderr]     |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_look_up`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mode_ext_band`
[INFO] [stderr]    --> src/mp3.rs:255:21
[INFO] [stderr]     |
[INFO] [stderr] 255 |                 let mode_ext_band = match (MODE_EXT & value) >> 4
[INFO] [stderr]     |                     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mode_ext_band`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `intensity_stereo`
[INFO] [stderr]    --> src/mp3.rs:263:21
[INFO] [stderr]     |
[INFO] [stderr] 263 |                 let intensity_stereo: Option<bool> = None;
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_intensity_stereo`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ms_stereo`
[INFO] [stderr]    --> src/mp3.rs:264:21
[INFO] [stderr]     |
[INFO] [stderr] 264 |                 let ms_stereo: Option<bool> = None;
[INFO] [stderr]     |                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ms_stereo`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mode_ext_band`
[INFO] [stderr]    --> src/mp3.rs:268:21
[INFO] [stderr]     |
[INFO] [stderr] 268 |                 let mode_ext_band: Option<u8> = None;
[INFO] [stderr]     |                     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mode_ext_band`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `intensity_stereo`
[INFO] [stderr]    --> src/mp3.rs:269:21
[INFO] [stderr]     |
[INFO] [stderr] 269 |                 let intensity_stereo = match (MODE_EXT & value) >> 4
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_intensity_stereo`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ms_stereo`
[INFO] [stderr]    --> src/mp3.rs:277:21
[INFO] [stderr]     |
[INFO] [stderr] 277 |                 let ms_stereo = match (MODE_EXT & value) >> 4
[INFO] [stderr]     |                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ms_stereo`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bytes_read`
[INFO] [stderr]    --> src/mp3.rs:345:22
[INFO] [stderr]     |
[INFO] [stderr] 345 |         while let Ok(bytes_read) = &data.read(&mut buffer)
[INFO] [stderr]     |                      ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes_read`
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SYNC_WORD`
[INFO] [stderr]  --> src/mp3.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | const SYNC_WORD: u32 =          0xFF_E0_00_00; // 11111111 11100000 00000000 00000000
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MPEG_VERSION_ID`
[INFO] [stderr]  --> src/mp3.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | const MPEG_VERSION_ID: u32 =    0x00_18_00_00; // 00000000 00011000 00000000 00000000
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `LAYER_DESCRIPTION`
[INFO] [stderr]   --> src/mp3.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | const LAYER_DESCRIPTION: u32 =  0x00_06_00_00; // 00000000 00000110 00000000 00000000
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `PROTECTION_BIT`
[INFO] [stderr]   --> src/mp3.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | const PROTECTION_BIT: u32 =     0x00_01_00_00; // 00000000 00000001 00000000 00000000
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `BITRATE_INDEX`
[INFO] [stderr]   --> src/mp3.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | const BITRATE_INDEX: u32 =      0x00_00_F0_00; // 00000000 00000000 11110000 00000000
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SAMPLE_FREQ`
[INFO] [stderr]   --> src/mp3.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | const SAMPLE_FREQ: u32 =        0x00_00_0C_00; // 00000000 00000000 00001100 00000000
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `PADDING_BIT`
[INFO] [stderr]   --> src/mp3.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | const PADDING_BIT: u32 =        0x00_00_02_00; // 00000000 00000000 00000010 00000000
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `PRIVATE_BIT`
[INFO] [stderr]   --> src/mp3.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | const PRIVATE_BIT: u32 =        0x00_00_01_00; // 00000000 00000000 00000001 00000000
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `CHANNEL_MODE`
[INFO] [stderr]   --> src/mp3.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | const CHANNEL_MODE: u32 =       0x00_00_00_C0; // 00000000 00000000 00000000 11000000
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MODE_EXT`
[INFO] [stderr]   --> src/mp3.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | const MODE_EXT: u32 =           0x00_00_00_30; // 00000000 00000000 00000000 00110000
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `COPYRIGHT`
[INFO] [stderr]   --> src/mp3.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | const COPYRIGHT: u32 =          0x00_00_00_08; // 00000000 00000000 00000000 00001000
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `ORIGINAL`
[INFO] [stderr]   --> src/mp3.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | const ORIGINAL: u32 =           0x00_00_00_04; // 00000000 00000000 00000000 00000100
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `EMPHASIS`
[INFO] [stderr]   --> src/mp3.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | const EMPHASIS: u32 =           0x00_00_00_03; // 00000000 00000000 00000000 00000011
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Version25`
[INFO] [stderr]   --> src/mp3.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     Version25,  // MPEG Version 2.5 (00)
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Version2`
[INFO] [stderr]   --> src/mp3.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     Version2,   // MPEG Version 2 (10)
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Version1`
[INFO] [stderr]   --> src/mp3.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     Version1,   // MPEG Version 1 (11)
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Layer3`
[INFO] [stderr]   --> src/mp3.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     Layer3,     // Layer III (01)
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Layer2`
[INFO] [stderr]   --> src/mp3.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     Layer2,     // Layer II (10)
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Layer1`
[INFO] [stderr]   --> src/mp3.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     Layer1,     // Layer I (11)
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `ProtectionBit`
[INFO] [stderr]   --> src/mp3.rs:43:6
[INFO] [stderr]    |
[INFO] [stderr] 43 | enum ProtectionBit
[INFO] [stderr]    |      ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Stereo`
[INFO] [stderr]   --> src/mp3.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     Stereo,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `JointStereo`
[INFO] [stderr]   --> src/mp3.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     JointStereo,    // Stereo
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `DualChannel`
[INFO] [stderr]   --> src/mp3.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     DualChannel,    // 2 Mono Channels
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SingleChannel`
[INFO] [stderr]   --> src/mp3.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     SingleChannel,  // Mono
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Emphasis`
[INFO] [stderr]   --> src/mp3.rs:58:6
[INFO] [stderr]    |
[INFO] [stderr] 58 | enum Emphasis
[INFO] [stderr]    |      ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `FrameHeader`
[INFO] [stderr]   --> src/mp3.rs:67:8
[INFO] [stderr]    |
[INFO] [stderr] 67 | struct FrameHeader
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/mp3.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     fn new(msg: &str) -> FrameHeaderError
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `decode_bitrate`
[INFO] [stderr]    --> src/mp3.rs:122:5
[INFO] [stderr]     |
[INFO] [stderr] 122 |     fn decode_bitrate(bits: u32, ver: MpegVersion, layer: LayerDesc) -> u32
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `BITRATE_VALUES`
[INFO] [stderr]    --> src/mp3.rs:125:9
[INFO] [stderr]     |
[INFO] [stderr] 125 | /         static BITRATE_VALUES: [[u32; 5]; 15] = [
[INFO] [stderr] 126 | |             [0,         0,          0,          0,          0],
[INFO] [stderr] 127 | |             [32_000,    32_000,     32_000,     32_000,     8_000],
[INFO] [stderr] 128 | |             [64_000,    48_000,     40_000,     48_000,     16_000],
[INFO] [stderr] ...   |
[INFO] [stderr] 140 | |             [448_000,   384_000,    320_000,    256_000,    160_000],
[INFO] [stderr] 141 | |         ];
[INFO] [stderr]     | |__________^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `decode_sample_rate`
[INFO] [stderr]    --> src/mp3.rs:170:5
[INFO] [stderr]     |
[INFO] [stderr] 170 |     fn decode_sample_rate(bits: u32, ver: MpegVersion) -> u32
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `SAMPLING_RATES`
[INFO] [stderr]    --> src/mp3.rs:173:9
[INFO] [stderr]     |
[INFO] [stderr] 173 | /         static SAMPLING_RATES: [[u32; 3]; 3] = [
[INFO] [stderr] 174 | |             [44_100,    22_050,     11_025,],
[INFO] [stderr] 175 | |             [48_000,    24_000,     12_000,],
[INFO] [stderr] 176 | |             [32_000,    16_000,     8_000,],
[INFO] [stderr] 177 | |         ];
[INFO] [stderr]     | |__________^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/mp3.rs:188:5
[INFO] [stderr]     |
[INFO] [stderr] 188 |     fn new(slice: [u8; 4]) -> Result<FrameHeader, FrameHeaderError>
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Frame`
[INFO] [stderr]    --> src/mp3.rs:321:8
[INFO] [stderr]     |
[INFO] [stderr] 321 | struct Frame
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Mp3`
[INFO] [stderr]    --> src/mp3.rs:328:8
[INFO] [stderr]     |
[INFO] [stderr] 328 | struct Mp3
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/mp3.rs:337:5
[INFO] [stderr]     |
[INFO] [stderr] 337 |     fn new(mut data: impl Read) -> Mp3
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `look_up`
[INFO] [stderr]    --> src/mp3.rs:151:21
[INFO] [stderr]     |
[INFO] [stderr] 151 |                 let look_up = match layer
[INFO] [stderr]     |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_look_up`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `look_up`
[INFO] [stderr]    --> src/mp3.rs:159:21
[INFO] [stderr]     |
[INFO] [stderr] 159 |                 let look_up = match layer
[INFO] [stderr]     |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_look_up`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mode_ext_band`
[INFO] [stderr]    --> src/mp3.rs:255:21
[INFO] [stderr]     |
[INFO] [stderr] 255 |                 let mode_ext_band = match (MODE_EXT & value) >> 4
[INFO] [stderr]     |                     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mode_ext_band`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `intensity_stereo`
[INFO] [stderr]    --> src/mp3.rs:263:21
[INFO] [stderr]     |
[INFO] [stderr] 263 |                 let intensity_stereo: Option<bool> = None;
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_intensity_stereo`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ms_stereo`
[INFO] [stderr]    --> src/mp3.rs:264:21
[INFO] [stderr]     |
[INFO] [stderr] 264 |                 let ms_stereo: Option<bool> = None;
[INFO] [stderr]     |                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ms_stereo`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mode_ext_band`
[INFO] [stderr]    --> src/mp3.rs:268:21
[INFO] [stderr]     |
[INFO] [stderr] 268 |                 let mode_ext_band: Option<u8> = None;
[INFO] [stderr]     |                     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mode_ext_band`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `intensity_stereo`
[INFO] [stderr]    --> src/mp3.rs:269:21
[INFO] [stderr]     |
[INFO] [stderr] 269 |                 let intensity_stereo = match (MODE_EXT & value) >> 4
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_intensity_stereo`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ms_stereo`
[INFO] [stderr]    --> src/mp3.rs:277:21
[INFO] [stderr]     |
[INFO] [stderr] 277 |                 let ms_stereo = match (MODE_EXT & value) >> 4
[INFO] [stderr]     |                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ms_stereo`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bytes_read`
[INFO] [stderr]    --> src/mp3.rs:345:22
[INFO] [stderr]     |
[INFO] [stderr] 345 |         while let Ok(bytes_read) = &data.read(&mut buffer)
[INFO] [stderr]     |                      ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes_read`
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SYNC_WORD`
[INFO] [stderr]  --> src/mp3.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | const SYNC_WORD: u32 =          0xFF_E0_00_00; // 11111111 11100000 00000000 00000000
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MPEG_VERSION_ID`
[INFO] [stderr]  --> src/mp3.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | const MPEG_VERSION_ID: u32 =    0x00_18_00_00; // 00000000 00011000 00000000 00000000
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `LAYER_DESCRIPTION`
[INFO] [stderr]   --> src/mp3.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | const LAYER_DESCRIPTION: u32 =  0x00_06_00_00; // 00000000 00000110 00000000 00000000
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `PROTECTION_BIT`
[INFO] [stderr]   --> src/mp3.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | const PROTECTION_BIT: u32 =     0x00_01_00_00; // 00000000 00000001 00000000 00000000
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `BITRATE_INDEX`
[INFO] [stderr]   --> src/mp3.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | const BITRATE_INDEX: u32 =      0x00_00_F0_00; // 00000000 00000000 11110000 00000000
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SAMPLE_FREQ`
[INFO] [stderr]   --> src/mp3.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | const SAMPLE_FREQ: u32 =        0x00_00_0C_00; // 00000000 00000000 00001100 00000000
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `PADDING_BIT`
[INFO] [stderr]   --> src/mp3.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | const PADDING_BIT: u32 =        0x00_00_02_00; // 00000000 00000000 00000010 00000000
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `PRIVATE_BIT`
[INFO] [stderr]   --> src/mp3.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | const PRIVATE_BIT: u32 =        0x00_00_01_00; // 00000000 00000000 00000001 00000000
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `CHANNEL_MODE`
[INFO] [stderr]   --> src/mp3.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | const CHANNEL_MODE: u32 =       0x00_00_00_C0; // 00000000 00000000 00000000 11000000
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MODE_EXT`
[INFO] [stderr]   --> src/mp3.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | const MODE_EXT: u32 =           0x00_00_00_30; // 00000000 00000000 00000000 00110000
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `COPYRIGHT`
[INFO] [stderr]   --> src/mp3.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | const COPYRIGHT: u32 =          0x00_00_00_08; // 00000000 00000000 00000000 00001000
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `ORIGINAL`
[INFO] [stderr]   --> src/mp3.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | const ORIGINAL: u32 =           0x00_00_00_04; // 00000000 00000000 00000000 00000100
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `EMPHASIS`
[INFO] [stderr]   --> src/mp3.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | const EMPHASIS: u32 =           0x00_00_00_03; // 00000000 00000000 00000000 00000011
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Version25`
[INFO] [stderr]   --> src/mp3.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     Version25,  // MPEG Version 2.5 (00)
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Version2`
[INFO] [stderr]   --> src/mp3.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     Version2,   // MPEG Version 2 (10)
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Version1`
[INFO] [stderr]   --> src/mp3.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     Version1,   // MPEG Version 1 (11)
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Layer3`
[INFO] [stderr]   --> src/mp3.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     Layer3,     // Layer III (01)
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Layer2`
[INFO] [stderr]   --> src/mp3.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     Layer2,     // Layer II (10)
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Layer1`
[INFO] [stderr]   --> src/mp3.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     Layer1,     // Layer I (11)
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `ProtectionBit`
[INFO] [stderr]   --> src/mp3.rs:43:6
[INFO] [stderr]    |
[INFO] [stderr] 43 | enum ProtectionBit
[INFO] [stderr]    |      ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Stereo`
[INFO] [stderr]   --> src/mp3.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     Stereo,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `JointStereo`
[INFO] [stderr]   --> src/mp3.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     JointStereo,    // Stereo
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `DualChannel`
[INFO] [stderr]   --> src/mp3.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     DualChannel,    // 2 Mono Channels
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SingleChannel`
[INFO] [stderr]   --> src/mp3.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     SingleChannel,  // Mono
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Emphasis`
[INFO] [stderr]   --> src/mp3.rs:58:6
[INFO] [stderr]    |
[INFO] [stderr] 58 | enum Emphasis
[INFO] [stderr]    |      ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `FrameHeader`
[INFO] [stderr]   --> src/mp3.rs:67:8
[INFO] [stderr]    |
[INFO] [stderr] 67 | struct FrameHeader
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/mp3.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     fn new(msg: &str) -> FrameHeaderError
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `decode_bitrate`
[INFO] [stderr]    --> src/mp3.rs:122:5
[INFO] [stderr]     |
[INFO] [stderr] 122 |     fn decode_bitrate(bits: u32, ver: MpegVersion, layer: LayerDesc) -> u32
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `BITRATE_VALUES`
[INFO] [stderr]    --> src/mp3.rs:125:9
[INFO] [stderr]     |
[INFO] [stderr] 125 | /         static BITRATE_VALUES: [[u32; 5]; 15] = [
[INFO] [stderr] 126 | |             [0,         0,          0,          0,          0],
[INFO] [stderr] 127 | |             [32_000,    32_000,     32_000,     32_000,     8_000],
[INFO] [stderr] 128 | |             [64_000,    48_000,     40_000,     48_000,     16_000],
[INFO] [stderr] ...   |
[INFO] [stderr] 140 | |             [448_000,   384_000,    320_000,    256_000,    160_000],
[INFO] [stderr] 141 | |         ];
[INFO] [stderr]     | |__________^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `decode_sample_rate`
[INFO] [stderr]    --> src/mp3.rs:170:5
[INFO] [stderr]     |
[INFO] [stderr] 170 |     fn decode_sample_rate(bits: u32, ver: MpegVersion) -> u32
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `SAMPLING_RATES`
[INFO] [stderr]    --> src/mp3.rs:173:9
[INFO] [stderr]     |
[INFO] [stderr] 173 | /         static SAMPLING_RATES: [[u32; 3]; 3] = [
[INFO] [stderr] 174 | |             [44_100,    22_050,     11_025,],
[INFO] [stderr] 175 | |             [48_000,    24_000,     12_000,],
[INFO] [stderr] 176 | |             [32_000,    16_000,     8_000,],
[INFO] [stderr] 177 | |         ];
[INFO] [stderr]     | |__________^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/mp3.rs:188:5
[INFO] [stderr]     |
[INFO] [stderr] 188 |     fn new(slice: [u8; 4]) -> Result<FrameHeader, FrameHeaderError>
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Frame`
[INFO] [stderr]    --> src/mp3.rs:321:8
[INFO] [stderr]     |
[INFO] [stderr] 321 | struct Frame
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Mp3`
[INFO] [stderr]    --> src/mp3.rs:328:8
[INFO] [stderr]     |
[INFO] [stderr] 328 | struct Mp3
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/mp3.rs:337:5
[INFO] [stderr]     |
[INFO] [stderr] 337 |     fn new(mut data: impl Read) -> Mp3
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `"docker" "inspect" "7a86f2dcb2f498e0e912bc4df1715f1ae4e8a961d804dd514fec3ce8653d9571"`
[INFO] running `"docker" "rm" "-f" "7a86f2dcb2f498e0e912bc4df1715f1ae4e8a961d804dd514fec3ce8653d9571"`
[INFO] [stdout] 7a86f2dcb2f498e0e912bc4df1715f1ae4e8a961d804dd514fec3ce8653d9571
