[INFO] updating cached repository vdebergue/broadlink-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/vdebergue/broadlink-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/vdebergue/broadlink-rust" "work/ex/clippy-test-run/sources/stable/gh/vdebergue/broadlink-rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/vdebergue/broadlink-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/vdebergue/broadlink-rust" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/vdebergue/broadlink-rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/vdebergue/broadlink-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5a29668b5f9aadb28ee124d29c7e14770d547d7f
[INFO] sha for GitHub repo vdebergue/broadlink-rust: 5a29668b5f9aadb28ee124d29c7e14770d547d7f
[INFO] validating manifest of vdebergue/broadlink-rust 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 vdebergue/broadlink-rust 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 vdebergue/broadlink-rust
[INFO] finished frobbing vdebergue/broadlink-rust
[INFO] frobbed toml for vdebergue/broadlink-rust written to work/ex/clippy-test-run/sources/stable/gh/vdebergue/broadlink-rust/Cargo.toml
[INFO] started frobbing vdebergue/broadlink-rust
[INFO] finished frobbing vdebergue/broadlink-rust
[INFO] frobbed toml for vdebergue/broadlink-rust written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/vdebergue/broadlink-rust/Cargo.toml
[INFO] crate vdebergue/broadlink-rust has a lockfile. skipping
[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 vdebergue/broadlink-rust against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-1/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/vdebergue/broadlink-rust:/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] 49c5efd4165c3a1d653e321431d7390132829303dc1e2222d1f0d48b95050cad
[INFO] running `"docker" "start" "-a" "49c5efd4165c3a1d653e321431d7390132829303dc1e2222d1f0d48b95050cad"`
[INFO] [stderr]    Compiling openssl v0.10.5
[INFO] [stderr]     Checking broadlink-artik v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `check_power`
[INFO] [stderr]    --> src/main.rs:291:3
[INFO] [stderr]     |
[INFO] [stderr] 291 |   fn check_power(&mut self) -> Result<bool, &'static str> {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u16 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:49:26
[INFO] [stderr]    |
[INFO] [stderr] 49 |   let device_type: u16 = (response[0x34] as u16) | (response[0x35] as u16) << 8;
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u16::from(response[0x34])`
[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/main.rs:49:52
[INFO] [stderr]    |
[INFO] [stderr] 49 |   let device_type: u16 = (response[0x34] as u16) | (response[0x35] as u16) << 8;
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u16::from(response[0x35])`
[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: Negation by multiplying with -1
[INFO] [stderr]   --> src/main.rs:63:32
[INFO] [stderr]    |
[INFO] [stderr] 63 |     let timezone_offset: i32 = now.tm_utcoff / 3600 * -1;
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::neg_multiply)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#neg_multiply
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `packet`.
[INFO] [stderr]   --> src/main.rs:91:14
[INFO] [stderr]    |
[INFO] [stderr] 91 |     for i in 0..packet.len() {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 91 |     for <item> in &packet {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:92:21
[INFO] [stderr]    |
[INFO] [stderr] 92 |         checksum += packet[i] as i32;
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^ help: try: `i32::from(packet[i])`
[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/main.rs:121:21
[INFO] [stderr]     |
[INFO] [stderr] 121 |     payload[0x30] = 'T' 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'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/main.rs:122:21
[INFO] [stderr]     |
[INFO] [stderr] 122 |     payload[0x31] = 'e' as u8;
[INFO] [stderr]     |                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'e'
[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/main.rs:123:21
[INFO] [stderr]     |
[INFO] [stderr] 123 |     payload[0x32] = 's' as u8;
[INFO] [stderr]     |                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b's'
[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/main.rs:124:21
[INFO] [stderr]     |
[INFO] [stderr] 124 |     payload[0x33] = 't' 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/main.rs:125:21
[INFO] [stderr]     |
[INFO] [stderr] 125 |     payload[0x34] = ' ' as u8;
[INFO] [stderr]     |                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b' '
[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/main.rs:126:21
[INFO] [stderr]     |
[INFO] [stderr] 126 |     payload[0x35] = ' ' as u8;
[INFO] [stderr]     |                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b' '
[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/main.rs:127:21
[INFO] [stderr]     |
[INFO] [stderr] 127 |     payload[0x36] = '1' as u8;
[INFO] [stderr]     |                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'1'
[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: length comparison to zero
[INFO] [stderr]    --> src/main.rs:192:10
[INFO] [stderr]     |
[INFO] [stderr] 192 |       if payload.len() > 0 {
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!payload.is_empty()`
[INFO] [stderr] warning: method is never used: `check_power`
[INFO] [stderr]    --> src/main.rs:291:3
[INFO] [stderr]     |
[INFO] [stderr] 291 |   fn check_power(&mut self) -> Result<bool, &'static str> {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:242:51
[INFO] [stderr]     |
[INFO] [stderr] 242 |     buffer.iter().fold(checksum, |acc, &x| (acc + x as u32) & 0xffff) as u16
[INFO] [stderr]     |                                                   ^^^^^^^^ help: try: `u32::from(x)`
[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/main.rs:275:5
[INFO] [stderr]     |
[INFO] [stderr] 275 |     self.count = self.count + 1;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.count += 1`
[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 u8 to u16 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:295:15
[INFO] [stderr]     |
[INFO] [stderr] 295 |     let err = (response[0x22] as u16) | ((response[0x23] as u16) << 8);
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u16::from(response[0x22])`
[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 u16 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:295:42
[INFO] [stderr]     |
[INFO] [stderr] 295 |     let err = (response[0x22] as u16) | ((response[0x23] as u16) << 8);
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u16::from(response[0x23])`
[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 u16 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:49:26
[INFO] [stderr]    |
[INFO] [stderr] 49 |   let device_type: u16 = (response[0x34] as u16) | (response[0x35] as u16) << 8;
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u16::from(response[0x34])`
[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/main.rs:49:52
[INFO] [stderr]    |
[INFO] [stderr] 49 |   let device_type: u16 = (response[0x34] as u16) | (response[0x35] as u16) << 8;
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u16::from(response[0x35])`
[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: Negation by multiplying with -1
[INFO] [stderr]   --> src/main.rs:63:32
[INFO] [stderr]    |
[INFO] [stderr] 63 |     let timezone_offset: i32 = now.tm_utcoff / 3600 * -1;
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::neg_multiply)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#neg_multiply
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `packet`.
[INFO] [stderr]   --> src/main.rs:91:14
[INFO] [stderr]    |
[INFO] [stderr] 91 |     for i in 0..packet.len() {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 91 |     for <item> in &packet {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:92:21
[INFO] [stderr]    |
[INFO] [stderr] 92 |         checksum += packet[i] as i32;
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^ help: try: `i32::from(packet[i])`
[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/main.rs:121:21
[INFO] [stderr]     |
[INFO] [stderr] 121 |     payload[0x30] = 'T' 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'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/main.rs:122:21
[INFO] [stderr]     |
[INFO] [stderr] 122 |     payload[0x31] = 'e' as u8;
[INFO] [stderr]     |                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'e'
[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/main.rs:123:21
[INFO] [stderr]     |
[INFO] [stderr] 123 |     payload[0x32] = 's' as u8;
[INFO] [stderr]     |                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b's'
[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/main.rs:124:21
[INFO] [stderr]     |
[INFO] [stderr] 124 |     payload[0x33] = 't' 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/main.rs:125:21
[INFO] [stderr]     |
[INFO] [stderr] 125 |     payload[0x34] = ' ' as u8;
[INFO] [stderr]     |                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b' '
[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/main.rs:126:21
[INFO] [stderr]     |
[INFO] [stderr] 126 |     payload[0x35] = ' ' as u8;
[INFO] [stderr]     |                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b' '
[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/main.rs:127:21
[INFO] [stderr]     |
[INFO] [stderr] 127 |     payload[0x36] = '1' as u8;
[INFO] [stderr]     |                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'1'
[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: length comparison to zero
[INFO] [stderr]    --> src/main.rs:192:10
[INFO] [stderr]     |
[INFO] [stderr] 192 |       if payload.len() > 0 {
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!payload.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:242:51
[INFO] [stderr]     |
[INFO] [stderr] 242 |     buffer.iter().fold(checksum, |acc, &x| (acc + x as u32) & 0xffff) as u16
[INFO] [stderr]     |                                                   ^^^^^^^^ help: try: `u32::from(x)`
[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/main.rs:275:5
[INFO] [stderr]     |
[INFO] [stderr] 275 |     self.count = self.count + 1;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.count += 1`
[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 u8 to u16 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:295:15
[INFO] [stderr]     |
[INFO] [stderr] 295 |     let err = (response[0x22] as u16) | ((response[0x23] as u16) << 8);
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u16::from(response[0x22])`
[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 u16 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:295:42
[INFO] [stderr]     |
[INFO] [stderr] 295 |     let err = (response[0x22] as u16) | ((response[0x23] as u16) << 8);
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u16::from(response[0x23])`
[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 6.12s
[INFO] running `"docker" "inspect" "49c5efd4165c3a1d653e321431d7390132829303dc1e2222d1f0d48b95050cad"`
[INFO] running `"docker" "rm" "-f" "49c5efd4165c3a1d653e321431d7390132829303dc1e2222d1f0d48b95050cad"`
[INFO] [stdout] 49c5efd4165c3a1d653e321431d7390132829303dc1e2222d1f0d48b95050cad