[INFO] crate mp3-duration 0.1.3 is already in cache
[INFO] extracting crate mp3-duration 0.1.3 into work/ex/clippy-test-run/sources/stable/reg/mp3-duration/0.1.3
[INFO] extracting crate mp3-duration 0.1.3 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/mp3-duration/0.1.3
[INFO] validating manifest of mp3-duration-0.1.3 on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mp3-duration-0.1.3 on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mp3-duration-0.1.3
[INFO] finished frobbing mp3-duration-0.1.3
[INFO] frobbed toml for mp3-duration-0.1.3 written to work/ex/clippy-test-run/sources/stable/reg/mp3-duration/0.1.3/Cargo.toml
[INFO] started frobbing mp3-duration-0.1.3
[INFO] finished frobbing mp3-duration-0.1.3
[INFO] frobbed toml for mp3-duration-0.1.3 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/mp3-duration/0.1.3/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting mp3-duration-0.1.3 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/mp3-duration/0.1.3:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a86e1815f25319649b427d3a458ecf43d73b01c6e9c45921b3d3912f4d326803
[INFO] running `"docker" "start" "-a" "a86e1815f25319649b427d3a458ecf43d73b01c6e9c45921b3d3912f4d326803"`
[INFO] [stderr]     Checking mp3-duration v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] warning: All variants have the same prefix: `Mpeg`
[INFO] [stderr]   --> src/lib.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | / enum Version {
[INFO] [stderr] 27 | |     Mpeg1,
[INFO] [stderr] 28 | |     Mpeg2,
[INFO] [stderr] 29 | |     Mpeg25,
[INFO] [stderr] 30 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::enum_variant_names)] on by default
[INFO] [stderr]    = help: remove the prefixes and use full paths to the variants instead of glob imports
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: Variant name starts with the enum's name
[INFO] [stderr]   --> src/lib.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     Layer1,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: Variant name starts with the enum's name
[INFO] [stderr]   --> src/lib.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     Layer2,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: Variant name starts with the enum's name
[INFO] [stderr]   --> src/lib.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     Layer3,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/lib.rs:246:55
[INFO] [stderr]     |
[INFO] [stderr] 246 |             let footer_size: usize = if 0 != (flags & 0b00010000) { 10 } else { 0 };
[INFO] [stderr]     |                                                       ^^^^^^^^^^ help: consider: `0b0001_0000`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: All variants have the same prefix: `Mpeg`
[INFO] [stderr]   --> src/lib.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | / enum Version {
[INFO] [stderr] 27 | |     Mpeg1,
[INFO] [stderr] 28 | |     Mpeg2,
[INFO] [stderr] 29 | |     Mpeg25,
[INFO] [stderr] 30 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::enum_variant_names)] on by default
[INFO] [stderr]    = help: remove the prefixes and use full paths to the variants instead of glob imports
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: Variant name starts with the enum's name
[INFO] [stderr]   --> src/lib.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     Layer1,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: Variant name starts with the enum's name
[INFO] [stderr]   --> src/lib.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     Layer2,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: Variant name starts with the enum's name
[INFO] [stderr]   --> src/lib.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     Layer3,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/lib.rs:246:55
[INFO] [stderr]     |
[INFO] [stderr] 246 |             let footer_size: usize = if 0 != (flags & 0b00010000) { 10 } else { 0 };
[INFO] [stderr]     |                                                       ^^^^^^^^^^ help: consider: `0b0001_0000`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] error: this comparison involving the minimum or maximum element for this type contains a case that is always true or always false
[INFO] [stderr]   --> src/lib.rs:87:8
[INFO] [stderr]    |
[INFO] [stderr] 87 |     if encoded_bitrate <= 0 || encoded_bitrate >= 15 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::absurd_extreme_comparisons)] on by default
[INFO] [stderr]    = help: because 0 is the minimum value for this type, the case where the two sides are not equal never occurs, consider using encoded_bitrate == 0 instead
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#absurd_extreme_comparisons
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:153:22
[INFO] [stderr]     |
[INFO] [stderr] 153 |         let header = (header_buffer[0] as u32) << 24 | (header_buffer[1] as u32) << 16 |
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(header_buffer[0])`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:153:56
[INFO] [stderr]     |
[INFO] [stderr] 153 |         let header = (header_buffer[0] as u32) << 24 | (header_buffer[1] as u32) << 16 |
[INFO] [stderr]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(header_buffer[1])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:154:22
[INFO] [stderr]     |
[INFO] [stderr] 154 |                      (header_buffer[2] as u32) << 8 | header_buffer[3] as u32;
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(header_buffer[2])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:154:55
[INFO] [stderr]     |
[INFO] [stderr] 154 |                      (header_buffer[2] as u32) << 8 | header_buffer[3] as u32;
[INFO] [stderr]     |                                                       ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(header_buffer[3])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:201:45
[INFO] [stderr]     |
[INFO] [stderr] 201 |             let is_xing = xing_buffer[0] == 'X' as u8 && xing_buffer[1] == 'i' as u8 &&
[INFO] [stderr]     |                                             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::char_lit_as_u8)] on by default
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'X'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:201:76
[INFO] [stderr]     |
[INFO] [stderr] 201 |             let is_xing = xing_buffer[0] == 'X' as u8 && xing_buffer[1] == 'i' as u8 &&
[INFO] [stderr]     |                                                                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'i'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:202:45
[INFO] [stderr]     |
[INFO] [stderr] 202 |                           xing_buffer[2] == 'n' as u8 &&
[INFO] [stderr]     |                                             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'n'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:203:45
[INFO] [stderr]     |
[INFO] [stderr] 203 |                           xing_buffer[3] == 'g' as u8;
[INFO] [stderr]     |                                             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'g'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:204:45
[INFO] [stderr]     |
[INFO] [stderr] 204 |             let is_info = xing_buffer[0] == 'I' as u8 && xing_buffer[1] == 'n' as u8 &&
[INFO] [stderr]     |                                             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'I'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:204:76
[INFO] [stderr]     |
[INFO] [stderr] 204 |             let is_info = xing_buffer[0] == 'I' as u8 && xing_buffer[1] == 'n' as u8 &&
[INFO] [stderr]     |                                                                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'n'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:205:45
[INFO] [stderr]     |
[INFO] [stderr] 205 |                           xing_buffer[2] == 'f' as u8 &&
[INFO] [stderr]     |                                             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'f'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:206:45
[INFO] [stderr]     |
[INFO] [stderr] 206 |                           xing_buffer[3] == 'o' as u8;
[INFO] [stderr]     |                                             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'o'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:210:38
[INFO] [stderr]     |
[INFO] [stderr] 210 |                     let num_frames = (xing_buffer[8] as u32) << 24 | (xing_buffer[9] as u32) << 16 |
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(xing_buffer[8])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:210:70
[INFO] [stderr]     |
[INFO] [stderr] 210 |                     let num_frames = (xing_buffer[8] as u32) << 24 | (xing_buffer[9] as u32) << 16 |
[INFO] [stderr]     |                                                                      ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(xing_buffer[9])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:211:38
[INFO] [stderr]     |
[INFO] [stderr] 211 |                                      (xing_buffer[10] as u32) << 8 |
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(xing_buffer[10])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:212:38
[INFO] [stderr]     |
[INFO] [stderr] 212 |                                      xing_buffer[11] as u32;
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(xing_buffer[11])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to u64 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:213:51
[INFO] [stderr]     |
[INFO] [stderr] 213 |                     return Ok(Duration::from_secs(num_frames as u64 * num_samples as u64 /
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^^ help: try: `u64::from(num_frames)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to u64 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:213:71
[INFO] [stderr]     |
[INFO] [stderr] 213 |                     return Ok(Duration::from_secs(num_frames as u64 * num_samples as u64 /
[INFO] [stderr]     |                                                                       ^^^^^^^^^^^^^^^^^^ help: try: `u64::from(num_samples)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to u64 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:214:51
[INFO] [stderr]     |
[INFO] [stderr] 214 |                                                   sampling_rate as u64));
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^^^^^ help: try: `u64::from(sampling_rate)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to u64 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:229:35
[INFO] [stderr]     |
[INFO] [stderr] 229 |             let frame_duration = (num_samples as u64 * 1_000_000_000) / (sampling_rate as u64);
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^ help: try: `u64::from(num_samples)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to u64 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:229:73
[INFO] [stderr]     |
[INFO] [stderr] 229 |             let frame_duration = (num_samples as u64 * 1_000_000_000) / (sampling_rate as u64);
[INFO] [stderr]     |                                                                         ^^^^^^^^^^^^^^^^^^^^^^ help: try: `u64::from(sampling_rate)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/lib.rs:230:13
[INFO] [stderr]     |
[INFO] [stderr] 230 |             duration = duration + Duration::new(0, frame_duration as u32);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `duration += Duration::new(0, frame_duration as u32)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:236:44
[INFO] [stderr]     |
[INFO] [stderr] 236 |         let is_id3v2 = header_buffer[0] == 'I' as u8 && header_buffer[1] == 'D' as u8 &&
[INFO] [stderr]     |                                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'I'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:236:77
[INFO] [stderr]     |
[INFO] [stderr] 236 |         let is_id3v2 = header_buffer[0] == 'I' as u8 && header_buffer[1] == 'D' as u8 &&
[INFO] [stderr]     |                                                                             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'D'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:237:44
[INFO] [stderr]     |
[INFO] [stderr] 237 |                        header_buffer[2] == '3' as u8;
[INFO] [stderr]     |                                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'3'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:248:18
[INFO] [stderr]     |
[INFO] [stderr] 248 |                 ((id3v2[5] as u32) | ((id3v2[4] as u32) << 7) | ((id3v2[3] as u32) << 14) |
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^ help: try: `u32::from(id3v2[5])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:248:39
[INFO] [stderr]     |
[INFO] [stderr] 248 |                 ((id3v2[5] as u32) | ((id3v2[4] as u32) << 7) | ((id3v2[3] as u32) << 14) |
[INFO] [stderr]     |                                       ^^^^^^^^^^^^^^^^^ help: try: `u32::from(id3v2[4])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:248:66
[INFO] [stderr]     |
[INFO] [stderr] 248 |                 ((id3v2[5] as u32) | ((id3v2[4] as u32) << 7) | ((id3v2[3] as u32) << 14) |
[INFO] [stderr]     |                                                                  ^^^^^^^^^^^^^^^^^ help: try: `u32::from(id3v2[3])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:249:19
[INFO] [stderr]     |
[INFO] [stderr] 249 |                  ((id3v2[2] as u32) << 21)) as usize;
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^ help: try: `u32::from(id3v2[2])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:259:44
[INFO] [stderr]     |
[INFO] [stderr] 259 |         let is_id3v1 = header_buffer[0] == 'T' as u8 && header_buffer[1] == 'A' as u8 &&
[INFO] [stderr]     |                                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'T'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:259:77
[INFO] [stderr]     |
[INFO] [stderr] 259 |         let is_id3v1 = header_buffer[0] == 'T' as u8 && header_buffer[1] == 'A' as u8 &&
[INFO] [stderr]     |                                                                             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'A'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:260:44
[INFO] [stderr]     |
[INFO] [stderr] 260 |                        header_buffer[2] == 'G' as u8;
[INFO] [stderr]     |                                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'G'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `mp3-duration`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: this comparison involving the minimum or maximum element for this type contains a case that is always true or always false
[INFO] [stderr]   --> src/lib.rs:87:8
[INFO] [stderr]    |
[INFO] [stderr] 87 |     if encoded_bitrate <= 0 || encoded_bitrate >= 15 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::absurd_extreme_comparisons)] on by default
[INFO] [stderr]    = help: because 0 is the minimum value for this type, the case where the two sides are not equal never occurs, consider using encoded_bitrate == 0 instead
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#absurd_extreme_comparisons
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:153:22
[INFO] [stderr]     |
[INFO] [stderr] 153 |         let header = (header_buffer[0] as u32) << 24 | (header_buffer[1] as u32) << 16 |
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(header_buffer[0])`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:153:56
[INFO] [stderr]     |
[INFO] [stderr] 153 |         let header = (header_buffer[0] as u32) << 24 | (header_buffer[1] as u32) << 16 |
[INFO] [stderr]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(header_buffer[1])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:154:22
[INFO] [stderr]     |
[INFO] [stderr] 154 |                      (header_buffer[2] as u32) << 8 | header_buffer[3] as u32;
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(header_buffer[2])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:154:55
[INFO] [stderr]     |
[INFO] [stderr] 154 |                      (header_buffer[2] as u32) << 8 | header_buffer[3] as u32;
[INFO] [stderr]     |                                                       ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(header_buffer[3])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:201:45
[INFO] [stderr]     |
[INFO] [stderr] 201 |             let is_xing = xing_buffer[0] == 'X' as u8 && xing_buffer[1] == 'i' as u8 &&
[INFO] [stderr]     |                                             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::char_lit_as_u8)] on by default
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'X'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:201:76
[INFO] [stderr]     |
[INFO] [stderr] 201 |             let is_xing = xing_buffer[0] == 'X' as u8 && xing_buffer[1] == 'i' as u8 &&
[INFO] [stderr]     |                                                                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'i'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:202:45
[INFO] [stderr]     |
[INFO] [stderr] 202 |                           xing_buffer[2] == 'n' as u8 &&
[INFO] [stderr]     |                                             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'n'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:203:45
[INFO] [stderr]     |
[INFO] [stderr] 203 |                           xing_buffer[3] == 'g' as u8;
[INFO] [stderr]     |                                             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'g'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:204:45
[INFO] [stderr]     |
[INFO] [stderr] 204 |             let is_info = xing_buffer[0] == 'I' as u8 && xing_buffer[1] == 'n' as u8 &&
[INFO] [stderr]     |                                             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'I'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:204:76
[INFO] [stderr]     |
[INFO] [stderr] 204 |             let is_info = xing_buffer[0] == 'I' as u8 && xing_buffer[1] == 'n' as u8 &&
[INFO] [stderr]     |                                                                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'n'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:205:45
[INFO] [stderr]     |
[INFO] [stderr] 205 |                           xing_buffer[2] == 'f' as u8 &&
[INFO] [stderr]     |                                             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'f'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:206:45
[INFO] [stderr]     |
[INFO] [stderr] 206 |                           xing_buffer[3] == 'o' as u8;
[INFO] [stderr]     |                                             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'o'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:210:38
[INFO] [stderr]     |
[INFO] [stderr] 210 |                     let num_frames = (xing_buffer[8] as u32) << 24 | (xing_buffer[9] as u32) << 16 |
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(xing_buffer[8])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:210:70
[INFO] [stderr]     |
[INFO] [stderr] 210 |                     let num_frames = (xing_buffer[8] as u32) << 24 | (xing_buffer[9] as u32) << 16 |
[INFO] [stderr]     |                                                                      ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(xing_buffer[9])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:211:38
[INFO] [stderr]     |
[INFO] [stderr] 211 |                                      (xing_buffer[10] as u32) << 8 |
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(xing_buffer[10])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:212:38
[INFO] [stderr]     |
[INFO] [stderr] 212 |                                      xing_buffer[11] as u32;
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(xing_buffer[11])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to u64 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:213:51
[INFO] [stderr]     |
[INFO] [stderr] 213 |                     return Ok(Duration::from_secs(num_frames as u64 * num_samples as u64 /
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^^ help: try: `u64::from(num_frames)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to u64 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:213:71
[INFO] [stderr]     |
[INFO] [stderr] 213 |                     return Ok(Duration::from_secs(num_frames as u64 * num_samples as u64 /
[INFO] [stderr]     |                                                                       ^^^^^^^^^^^^^^^^^^ help: try: `u64::from(num_samples)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to u64 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:214:51
[INFO] [stderr]     |
[INFO] [stderr] 214 |                                                   sampling_rate as u64));
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^^^^^ help: try: `u64::from(sampling_rate)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to u64 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:229:35
[INFO] [stderr]     |
[INFO] [stderr] 229 |             let frame_duration = (num_samples as u64 * 1_000_000_000) / (sampling_rate as u64);
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^ help: try: `u64::from(num_samples)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to u64 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:229:73
[INFO] [stderr]     |
[INFO] [stderr] 229 |             let frame_duration = (num_samples as u64 * 1_000_000_000) / (sampling_rate as u64);
[INFO] [stderr]     |                                                                         ^^^^^^^^^^^^^^^^^^^^^^ help: try: `u64::from(sampling_rate)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/lib.rs:230:13
[INFO] [stderr]     |
[INFO] [stderr] 230 |             duration = duration + Duration::new(0, frame_duration as u32);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `duration += Duration::new(0, frame_duration as u32)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:236:44
[INFO] [stderr]     |
[INFO] [stderr] 236 |         let is_id3v2 = header_buffer[0] == 'I' as u8 && header_buffer[1] == 'D' as u8 &&
[INFO] [stderr]     |                                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'I'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:236:77
[INFO] [stderr]     |
[INFO] [stderr] 236 |         let is_id3v2 = header_buffer[0] == 'I' as u8 && header_buffer[1] == 'D' as u8 &&
[INFO] [stderr]     |                                                                             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'D'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:237:44
[INFO] [stderr]     |
[INFO] [stderr] 237 |                        header_buffer[2] == '3' as u8;
[INFO] [stderr]     |                                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'3'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:248:18
[INFO] [stderr]     |
[INFO] [stderr] 248 |                 ((id3v2[5] as u32) | ((id3v2[4] as u32) << 7) | ((id3v2[3] as u32) << 14) |
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^ help: try: `u32::from(id3v2[5])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:248:39
[INFO] [stderr]     |
[INFO] [stderr] 248 |                 ((id3v2[5] as u32) | ((id3v2[4] as u32) << 7) | ((id3v2[3] as u32) << 14) |
[INFO] [stderr]     |                                       ^^^^^^^^^^^^^^^^^ help: try: `u32::from(id3v2[4])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:248:66
[INFO] [stderr]     |
[INFO] [stderr] 248 |                 ((id3v2[5] as u32) | ((id3v2[4] as u32) << 7) | ((id3v2[3] as u32) << 14) |
[INFO] [stderr]     |                                                                  ^^^^^^^^^^^^^^^^^ help: try: `u32::from(id3v2[3])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:249:19
[INFO] [stderr]     |
[INFO] [stderr] 249 |                  ((id3v2[2] as u32) << 21)) as usize;
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^ help: try: `u32::from(id3v2[2])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:259:44
[INFO] [stderr]     |
[INFO] [stderr] 259 |         let is_id3v1 = header_buffer[0] == 'T' as u8 && header_buffer[1] == 'A' as u8 &&
[INFO] [stderr]     |                                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'T'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:259:77
[INFO] [stderr]     |
[INFO] [stderr] 259 |         let is_id3v1 = header_buffer[0] == 'T' as u8 && header_buffer[1] == 'A' as u8 &&
[INFO] [stderr]     |                                                                             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'A'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/lib.rs:260:44
[INFO] [stderr]     |
[INFO] [stderr] 260 |                        header_buffer[2] == 'G' as u8;
[INFO] [stderr]     |                                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'G'
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `mp3-duration`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "a86e1815f25319649b427d3a458ecf43d73b01c6e9c45921b3d3912f4d326803"`
[INFO] running `"docker" "rm" "-f" "a86e1815f25319649b427d3a458ecf43d73b01c6e9c45921b3d3912f4d326803"`
[INFO] [stdout] a86e1815f25319649b427d3a458ecf43d73b01c6e9c45921b3d3912f4d326803