[INFO] crate gzip-header 0.2.0 is already in cache
[INFO] extracting crate gzip-header 0.2.0 into work/ex/clippy-test-run/sources/stable/reg/gzip-header/0.2.0
[INFO] extracting crate gzip-header 0.2.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/gzip-header/0.2.0
[INFO] validating manifest of gzip-header-0.2.0 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 gzip-header-0.2.0 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 gzip-header-0.2.0
[INFO] finished frobbing gzip-header-0.2.0
[INFO] frobbed toml for gzip-header-0.2.0 written to work/ex/clippy-test-run/sources/stable/reg/gzip-header/0.2.0/Cargo.toml
[INFO] started frobbing gzip-header-0.2.0
[INFO] finished frobbing gzip-header-0.2.0
[INFO] frobbed toml for gzip-header-0.2.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/gzip-header/0.2.0/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 gzip-header-0.2.0 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/gzip-header/0.2.0:/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] 2b11e78b6bc9ede0f6bcad4d885268acaf85f6398693d54f8b6fec42649a9b33
[INFO] running `"docker" "start" "-a" "2b11e78b6bc9ede0f6bcad4d885268acaf85f6398693d54f8b6fec42649a9b33"`
[INFO] [stderr]     Checking gzip-header v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/crc_reader.rs:44:13
[INFO] [stderr]    |
[INFO] [stderr] 44 |             checksum: checksum,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `checksum`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/lib.rs:564:9
[INFO] [stderr]     |
[INFO] [stderr] 564 |         extra: extra,
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: replace it with: `extra`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/lib.rs:565:9
[INFO] [stderr]     |
[INFO] [stderr] 565 |         filename: filename,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^ help: replace it with: `filename`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/lib.rs:566:9
[INFO] [stderr]     |
[INFO] [stderr] 566 |         comment: comment,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^ help: replace it with: `comment`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/lib.rs:567:9
[INFO] [stderr]     |
[INFO] [stderr] 567 |         mtime: mtime,
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: replace it with: `mtime`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/lib.rs:568:9
[INFO] [stderr]     |
[INFO] [stderr] 568 |         os: os,
[INFO] [stderr]     |         ^^^^^^ help: replace it with: `os`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/lib.rs:569:9
[INFO] [stderr]     |
[INFO] [stderr] 569 |         xfl: xfl,
[INFO] [stderr]     |         ^^^^^^^^ help: replace it with: `xfl`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/crc_reader.rs:44:13
[INFO] [stderr]    |
[INFO] [stderr] 44 |             checksum: checksum,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `checksum`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/lib.rs:564:9
[INFO] [stderr]     |
[INFO] [stderr] 564 |         extra: extra,
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: replace it with: `extra`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/lib.rs:565:9
[INFO] [stderr]     |
[INFO] [stderr] 565 |         filename: filename,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^ help: replace it with: `filename`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/lib.rs:566:9
[INFO] [stderr]     |
[INFO] [stderr] 566 |         comment: comment,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^ help: replace it with: `comment`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/lib.rs:567:9
[INFO] [stderr]     |
[INFO] [stderr] 567 |         mtime: mtime,
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: replace it with: `mtime`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/lib.rs:568:9
[INFO] [stderr]     |
[INFO] [stderr] 568 |         os: os,
[INFO] [stderr]     |         ^^^^^^ help: replace it with: `os`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/lib.rs:569:9
[INFO] [stderr]     |
[INFO] [stderr] 569 |         xfl: xfl,
[INFO] [stderr]     |         ^^^^^^^^ help: replace it with: `xfl`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/crc_reader.rs:129:29
[INFO] [stderr]     |
[INFO] [stderr] 129 |         assert_eq!(c.sum(), 0x141ddb83);
[INFO] [stderr]     |                             ^^^^^^^^^^ help: consider: `0x141d_db83`
[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: Constants have by default a `'static` lifetime
[INFO] [stderr]    --> src/lib.rs:579:25
[INFO] [stderr]     |
[INFO] [stderr] 579 |         const COMMENT: &'static [u8] = b"Comment";
[INFO] [stderr]     |                        -^^^^^^^----- help: consider removing `'static`: `&[u8]`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::const_static_lifetime)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]    --> src/lib.rs:580:26
[INFO] [stderr]     |
[INFO] [stderr] 580 |         const FILENAME: &'static [u8] = b"Filename";
[INFO] [stderr]     |                         -^^^^^^^----- help: consider removing `'static`: `&[u8]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/crc_reader.rs:50:16
[INFO] [stderr]    |
[INFO] [stderr] 50 |     pub fn sum(&self) -> u32 {
[INFO] [stderr]    |                ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/crc_reader.rs:55:23
[INFO] [stderr]    |
[INFO] [stderr] 55 |     pub fn amt_as_u32(&self) -> u32 {
[INFO] [stderr]    |                       ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/lib.rs:75:18
[INFO] [stderr]    |
[INFO] [stderr] 75 |     pub fn as_u8(&self) -> u8 {
[INFO] [stderr]    |                  ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:170:18
[INFO] [stderr]     |
[INFO] [stderr] 170 |     pub fn as_u8(&self) -> u8 {
[INFO] [stderr]     |                  ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u16 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:475:8
[INFO] [stderr]     |
[INFO] [stderr] 475 |     Ok((b[0] as u16) | ((b[1] as u16) << 8))
[INFO] [stderr]     |        ^^^^^^^^^^^^^ help: try: `u16::from(b[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 u16 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:475:25
[INFO] [stderr]     |
[INFO] [stderr] 475 |     Ok((b[0] as u16) | ((b[1] as u16) << 8))
[INFO] [stderr]     |                         ^^^^^^^^^^^^^ help: try: `u16::from(b[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:507:17
[INFO] [stderr]     |
[INFO] [stderr] 507 |     let mtime = (header[4] as u32/* << 0*/) | ((header[5] as u32) << 8) |
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(header[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:507:48
[INFO] [stderr]     |
[INFO] [stderr] 507 |     let mtime = (header[4] as u32/* << 0*/) | ((header[5] as u32) << 8) |
[INFO] [stderr]     |                                                ^^^^^^^^^^^^^^^^^^ help: try: `u32::from(header[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:508:10
[INFO] [stderr]     |
[INFO] [stderr] 508 |         ((header[6] as u32) << 16) | ((header[7] as u32) << 24);
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^ help: try: `u32::from(header[6])`
[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:508:39
[INFO] [stderr]     |
[INFO] [stderr] 508 |         ((header[6] as u32) << 16) | ((header[7] as u32) << 24);
[INFO] [stderr]     |                                       ^^^^^^^^^^^^^^^^^^ help: try: `u32::from(header[7])`
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/crc_reader.rs:50:16
[INFO] [stderr]    |
[INFO] [stderr] 50 |     pub fn sum(&self) -> u32 {
[INFO] [stderr]    |                ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/crc_reader.rs:55:23
[INFO] [stderr]    |
[INFO] [stderr] 55 |     pub fn amt_as_u32(&self) -> u32 {
[INFO] [stderr]    |                       ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/lib.rs:75:18
[INFO] [stderr]    |
[INFO] [stderr] 75 |     pub fn as_u8(&self) -> u8 {
[INFO] [stderr]    |                  ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:170:18
[INFO] [stderr]     |
[INFO] [stderr] 170 |     pub fn as_u8(&self) -> u8 {
[INFO] [stderr]     |                  ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u16 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:475:8
[INFO] [stderr]     |
[INFO] [stderr] 475 |     Ok((b[0] as u16) | ((b[1] as u16) << 8))
[INFO] [stderr]     |        ^^^^^^^^^^^^^ help: try: `u16::from(b[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 u16 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:475:25
[INFO] [stderr]     |
[INFO] [stderr] 475 |     Ok((b[0] as u16) | ((b[1] as u16) << 8))
[INFO] [stderr]     |                         ^^^^^^^^^^^^^ help: try: `u16::from(b[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:507:17
[INFO] [stderr]     |
[INFO] [stderr] 507 |     let mtime = (header[4] as u32/* << 0*/) | ((header[5] as u32) << 8) |
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(header[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:507:48
[INFO] [stderr]     |
[INFO] [stderr] 507 |     let mtime = (header[4] as u32/* << 0*/) | ((header[5] as u32) << 8) |
[INFO] [stderr]     |                                                ^^^^^^^^^^^^^^^^^^ help: try: `u32::from(header[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:508:10
[INFO] [stderr]     |
[INFO] [stderr] 508 |         ((header[6] as u32) << 16) | ((header[7] as u32) << 24);
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^ help: try: `u32::from(header[6])`
[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:508:39
[INFO] [stderr]     |
[INFO] [stderr] 508 |         ((header[6] as u32) << 16) | ((header[7] as u32) << 24);
[INFO] [stderr]     |                                       ^^^^^^^^^^^^^^^^^^ help: try: `u32::from(header[7])`
[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: an inclusive range would be more readable
[INFO] [stderr]    --> src/lib.rs:621:18
[INFO] [stderr]     |
[INFO] [stderr] 621 |         for n in 20..(u8::max_value() as u16) + 1 {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `20..=(u8::max_value() as u16)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u16 may become silently lossy if types change
[INFO] [stderr]    --> src/lib.rs:621:22
[INFO] [stderr]     |
[INFO] [stderr] 621 |         for n in 20..(u8::max_value() as u16) + 1 {
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u16::from(u8::max_value())`
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1.30s
[INFO] running `"docker" "inspect" "2b11e78b6bc9ede0f6bcad4d885268acaf85f6398693d54f8b6fec42649a9b33"`
[INFO] running `"docker" "rm" "-f" "2b11e78b6bc9ede0f6bcad4d885268acaf85f6398693d54f8b6fec42649a9b33"`
[INFO] [stdout] 2b11e78b6bc9ede0f6bcad4d885268acaf85f6398693d54f8b6fec42649a9b33