[INFO] crate libbeaglebone 0.5.0 is already in cache
[INFO] extracting crate libbeaglebone 0.5.0 into work/ex/clippy-test-run/sources/stable/reg/libbeaglebone/0.5.0
[INFO] extracting crate libbeaglebone 0.5.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/libbeaglebone/0.5.0
[INFO] validating manifest of libbeaglebone-0.5.0 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 libbeaglebone-0.5.0 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 libbeaglebone-0.5.0
[INFO] finished frobbing libbeaglebone-0.5.0
[INFO] frobbed toml for libbeaglebone-0.5.0 written to work/ex/clippy-test-run/sources/stable/reg/libbeaglebone/0.5.0/Cargo.toml
[INFO] started frobbing libbeaglebone-0.5.0
[INFO] finished frobbing libbeaglebone-0.5.0
[INFO] frobbed toml for libbeaglebone-0.5.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/libbeaglebone/0.5.0/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 libbeaglebone-0.5.0 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/reg/libbeaglebone/0.5.0:/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] f576bc08c7ddd435ecb6073ec5bd67a739075360d94f5617125545d3999b8923
[INFO] running `"docker" "start" "-a" "f576bc08c7ddd435ecb6073ec5bd67a739075360d94f5617125545d3999b8923"`
[INFO] [stderr]     Checking serialport v1.0.1
[INFO] [stderr]     Checking libbeaglebone v0.5.0 (/opt/crater/workdir)
[INFO] [stderr] warning: lint `extra_requirement_in_impl` has been removed: `converted into hard error, see https://github.com/rust-lang/rust/issues/37166`
[INFO] [stderr]  --> src/lib.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |         extra_requirement_in_impl,
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(renamed_and_removed_lints)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: lint `private_no_mangle_fns` has been removed: `no longer an warning, #[no_mangle] functions always exported`
[INFO] [stderr]   --> src/lib.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         private_no_mangle_fns,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: lint `private_no_mangle_statics` has been removed: `no longer an warning, #[no_mangle] statics always exported`
[INFO] [stderr]   --> src/lib.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |         private_no_mangle_statics,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/gpio.rs:82:7
[INFO] [stderr]    |
[INFO] [stderr] 82 |       pin_num: pin_num,
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^ help: replace it with: `pin_num`
[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/pwm.rs:67:7
[INFO] [stderr]    |
[INFO] [stderr] 67 |       pwm_chip_num: pwm_chip_num,
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `pwm_chip_num`
[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/pwm.rs:68:7
[INFO] [stderr]    |
[INFO] [stderr] 68 |       pwm_num: pwm_num,
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^ help: replace it with: `pwm_num`
[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/i2c.rs:72:10
[INFO] [stderr]    |
[INFO] [stderr] 72 |          i2c_num: i2c_num,
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^ help: replace it with: `i2c_num`
[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/i2c.rs:176:7
[INFO] [stderr]     |
[INFO] [stderr] 176 |       read_write: read_write,
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `read_write`
[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/i2c.rs:177:7
[INFO] [stderr]     |
[INFO] [stderr] 177 |       command: command,
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^ help: replace it with: `command`
[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/i2c.rs:178:7
[INFO] [stderr]     |
[INFO] [stderr] 178 |       size: size,
[INFO] [stderr]     |       ^^^^^^^^^^ help: replace it with: `size`
[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/i2c.rs:179:7
[INFO] [stderr]     |
[INFO] [stderr] 179 |       data: data,
[INFO] [stderr]     |       ^^^^^^^^^^ help: replace it with: `data`
[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: lint `extra_requirement_in_impl` has been removed: `converted into hard error, see https://github.com/rust-lang/rust/issues/37166`
[INFO] [stderr]  --> src/lib.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |         extra_requirement_in_impl,
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(renamed_and_removed_lints)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: lint `private_no_mangle_fns` has been removed: `no longer an warning, #[no_mangle] functions always exported`
[INFO] [stderr]   --> src/lib.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         private_no_mangle_fns,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: lint `private_no_mangle_statics` has been removed: `no longer an warning, #[no_mangle] statics always exported`
[INFO] [stderr]   --> src/lib.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |         private_no_mangle_statics,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/gpio.rs:82:7
[INFO] [stderr]    |
[INFO] [stderr] 82 |       pin_num: pin_num,
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^ help: replace it with: `pin_num`
[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/pwm.rs:67:7
[INFO] [stderr]    |
[INFO] [stderr] 67 |       pwm_chip_num: pwm_chip_num,
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `pwm_chip_num`
[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/pwm.rs:68:7
[INFO] [stderr]    |
[INFO] [stderr] 68 |       pwm_num: pwm_num,
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^ help: replace it with: `pwm_num`
[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/i2c.rs:72:10
[INFO] [stderr]    |
[INFO] [stderr] 72 |          i2c_num: i2c_num,
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^ help: replace it with: `i2c_num`
[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/i2c.rs:176:7
[INFO] [stderr]     |
[INFO] [stderr] 176 |       read_write: read_write,
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `read_write`
[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/i2c.rs:177:7
[INFO] [stderr]     |
[INFO] [stderr] 177 |       command: command,
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^ help: replace it with: `command`
[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/i2c.rs:178:7
[INFO] [stderr]     |
[INFO] [stderr] 178 |       size: size,
[INFO] [stderr]     |       ^^^^^^^^^^ help: replace it with: `size`
[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/i2c.rs:179:7
[INFO] [stderr]     |
[INFO] [stderr] 179 |       data: data,
[INFO] [stderr]     |       ^^^^^^^^^^ help: replace it with: `data`
[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/spi.rs:144:21
[INFO] [stderr]     |
[INFO] [stderr] 144 |     if (mode.bits & 0xFFFFFF00) != 0 {
[INFO] [stderr]     |                     ^^^^^^^^^^ help: consider: `0xFFFF_FF00`
[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: long literal lacking separators
[INFO] [stderr]    --> src/spi.rs:144:21
[INFO] [stderr]     |
[INFO] [stderr] 144 |     if (mode.bits & 0xFFFFFF00) != 0 {
[INFO] [stderr]     |                     ^^^^^^^^^^ help: consider: `0xFFFF_FF00`
[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: passing a unit value to a function
[INFO] [stderr]    --> src/uart.rs:171:8
[INFO] [stderr]     |
[INFO] [stderr] 171 |       Ok(self.port
[INFO] [stderr]     |  ________^
[INFO] [stderr] 172 | |            .set_baud_rate(baud_rate)
[INFO] [stderr] 173 | |            .chain_err(|| "Failed to set UART baud rate.")?)
[INFO] [stderr]     | |__________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unit_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[INFO] [stderr] help: if you intended to pass a unit value, use a unit literal instead
[INFO] [stderr]     |
[INFO] [stderr] 171 |     Ok(())
[INFO] [stderr]     |        ^^
[INFO] [stderr] 
[INFO] [stderr] warning: passing a unit value to a function
[INFO] [stderr]    --> src/uart.rs:178:8
[INFO] [stderr]     |
[INFO] [stderr] 178 |       Ok(self.port
[INFO] [stderr]     |  ________^
[INFO] [stderr] 179 | |            .set_data_bits(data_bits)
[INFO] [stderr] 180 | |            .chain_err(|| "Failed to set UART data bits.")?)
[INFO] [stderr]     | |__________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[INFO] [stderr] help: if you intended to pass a unit value, use a unit literal instead
[INFO] [stderr]     |
[INFO] [stderr] 178 |     Ok(())
[INFO] [stderr]     |        ^^
[INFO] [stderr] 
[INFO] [stderr] warning: passing a unit value to a function
[INFO] [stderr]    --> src/uart.rs:185:8
[INFO] [stderr]     |
[INFO] [stderr] 185 |       Ok(self.port
[INFO] [stderr]     |  ________^
[INFO] [stderr] 186 | |            .set_flow_control(flow_control)
[INFO] [stderr] 187 | |            .chain_err(|| "Failed to set UART flow control.")?)
[INFO] [stderr]     | |_____________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[INFO] [stderr] help: if you intended to pass a unit value, use a unit literal instead
[INFO] [stderr]     |
[INFO] [stderr] 185 |     Ok(())
[INFO] [stderr]     |        ^^
[INFO] [stderr] 
[INFO] [stderr] warning: passing a unit value to a function
[INFO] [stderr]    --> src/uart.rs:192:8
[INFO] [stderr]     |
[INFO] [stderr] 192 |       Ok(self.port
[INFO] [stderr]     |  ________^
[INFO] [stderr] 193 | |            .set_parity(parity)
[INFO] [stderr] 194 | |            .chain_err(|| "Failed to set UART parity.")?)
[INFO] [stderr]     | |_______________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[INFO] [stderr] help: if you intended to pass a unit value, use a unit literal instead
[INFO] [stderr]     |
[INFO] [stderr] 192 |     Ok(())
[INFO] [stderr]     |        ^^
[INFO] [stderr] 
[INFO] [stderr] warning: passing a unit value to a function
[INFO] [stderr]    --> src/uart.rs:199:8
[INFO] [stderr]     |
[INFO] [stderr] 199 |       Ok(self.port
[INFO] [stderr]     |  ________^
[INFO] [stderr] 200 | |            .set_stop_bits(stop_bits)
[INFO] [stderr] 201 | |            .chain_err(|| "Failed to set UART stop bits.")?)
[INFO] [stderr]     | |__________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[INFO] [stderr] help: if you intended to pass a unit value, use a unit literal instead
[INFO] [stderr]     |
[INFO] [stderr] 199 |     Ok(())
[INFO] [stderr]     |        ^^
[INFO] [stderr] 
[INFO] [stderr] warning: passing a unit value to a function
[INFO] [stderr]    --> src/uart.rs:206:8
[INFO] [stderr]     |
[INFO] [stderr] 206 |       Ok(self.port
[INFO] [stderr]     |  ________^
[INFO] [stderr] 207 | |            .set_timeout(timeout)
[INFO] [stderr] 208 | |            .chain_err(|| "Failed to set UART timeout.")?)
[INFO] [stderr]     | |________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[INFO] [stderr] help: if you intended to pass a unit value, use a unit literal instead
[INFO] [stderr]     |
[INFO] [stderr] 206 |     Ok(())
[INFO] [stderr]     |        ^^
[INFO] [stderr] 
[INFO] [stderr] warning: this let-binding has unit value. Consider omitting `let _ =`
[INFO] [stderr]    --> src/i2c.rs:160:7
[INFO] [stderr]     |
[INFO] [stderr] 160 | /       let _ = self.i2c_call(1, 0, 1, &mut data)
[INFO] [stderr] 161 | |                   .chain_err(|| "Failed to read from the I2C device.")?;
[INFO] [stderr]     | |________________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::let_unit_value)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stderr] 
[INFO] [stderr] warning: transmute from a reference to a pointer
[INFO] [stderr]    --> src/i2c.rs:184:27
[INFO] [stderr]     |
[INFO] [stderr] 184 |     let p_args: *mut u8 = mem::transmute(&mut args);
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&mut args as *mut i2c::i2c_ioctl_data as *mut u8`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_transmute)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_transmute
[INFO] [stderr] 
[INFO] [stderr] warning: passing a unit value to a function
[INFO] [stderr]    --> src/uart.rs:171:8
[INFO] [stderr]     |
[INFO] [stderr] 171 |       Ok(self.port
[INFO] [stderr]     |  ________^
[INFO] [stderr] 172 | |            .set_baud_rate(baud_rate)
[INFO] [stderr] 173 | |            .chain_err(|| "Failed to set UART baud rate.")?)
[INFO] [stderr]     | |__________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unit_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[INFO] [stderr] help: if you intended to pass a unit value, use a unit literal instead
[INFO] [stderr]     |
[INFO] [stderr] 171 |     Ok(())
[INFO] [stderr]     |        ^^
[INFO] [stderr] 
[INFO] [stderr] warning: passing a unit value to a function
[INFO] [stderr]    --> src/uart.rs:178:8
[INFO] [stderr]     |
[INFO] [stderr] 178 |       Ok(self.port
[INFO] [stderr]     |  ________^
[INFO] [stderr] 179 | |            .set_data_bits(data_bits)
[INFO] [stderr] 180 | |            .chain_err(|| "Failed to set UART data bits.")?)
[INFO] [stderr]     | |__________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[INFO] [stderr] help: if you intended to pass a unit value, use a unit literal instead
[INFO] [stderr]     |
[INFO] [stderr] 178 |     Ok(())
[INFO] [stderr]     |        ^^
[INFO] [stderr] 
[INFO] [stderr] warning: passing a unit value to a function
[INFO] [stderr]    --> src/uart.rs:185:8
[INFO] [stderr]     |
[INFO] [stderr] 185 |       Ok(self.port
[INFO] [stderr]     |  ________^
[INFO] [stderr] 186 | |            .set_flow_control(flow_control)
[INFO] [stderr] 187 | |            .chain_err(|| "Failed to set UART flow control.")?)
[INFO] [stderr]     | |_____________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[INFO] [stderr] help: if you intended to pass a unit value, use a unit literal instead
[INFO] [stderr]     |
[INFO] [stderr] 185 |     Ok(())
[INFO] [stderr]     |        ^^
[INFO] [stderr] 
[INFO] [stderr] warning: passing a unit value to a function
[INFO] [stderr]    --> src/uart.rs:192:8
[INFO] [stderr]     |
[INFO] [stderr] 192 |       Ok(self.port
[INFO] [stderr]     |  ________^
[INFO] [stderr] 193 | |            .set_parity(parity)
[INFO] [stderr] 194 | |            .chain_err(|| "Failed to set UART parity.")?)
[INFO] [stderr]     | |_______________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[INFO] [stderr] help: if you intended to pass a unit value, use a unit literal instead
[INFO] [stderr]     |
[INFO] [stderr] 192 |     Ok(())
[INFO] [stderr]     |        ^^
[INFO] [stderr] 
[INFO] [stderr] warning: passing a unit value to a function
[INFO] [stderr]    --> src/uart.rs:199:8
[INFO] [stderr]     |
[INFO] [stderr] 199 |       Ok(self.port
[INFO] [stderr]     |  ________^
[INFO] [stderr] 200 | |            .set_stop_bits(stop_bits)
[INFO] [stderr] 201 | |            .chain_err(|| "Failed to set UART stop bits.")?)
[INFO] [stderr]     | |__________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[INFO] [stderr] help: if you intended to pass a unit value, use a unit literal instead
[INFO] [stderr]     |
[INFO] [stderr] 199 |     Ok(())
[INFO] [stderr]     |        ^^
[INFO] [stderr] 
[INFO] [stderr] warning: passing a unit value to a function
[INFO] [stderr]    --> src/uart.rs:206:8
[INFO] [stderr]     |
[INFO] [stderr] 206 |       Ok(self.port
[INFO] [stderr]     |  ________^
[INFO] [stderr] 207 | |            .set_timeout(timeout)
[INFO] [stderr] 208 | |            .chain_err(|| "Failed to set UART timeout.")?)
[INFO] [stderr]     | |________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[INFO] [stderr] help: if you intended to pass a unit value, use a unit literal instead
[INFO] [stderr]     |
[INFO] [stderr] 206 |     Ok(())
[INFO] [stderr]     |        ^^
[INFO] [stderr] 
[INFO] [stderr] warning: this let-binding has unit value. Consider omitting `let _ =`
[INFO] [stderr]    --> src/i2c.rs:160:7
[INFO] [stderr]     |
[INFO] [stderr] 160 | /       let _ = self.i2c_call(1, 0, 1, &mut data)
[INFO] [stderr] 161 | |                   .chain_err(|| "Failed to read from the I2C device.")?;
[INFO] [stderr]     | |________________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::let_unit_value)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stderr] 
[INFO] [stderr] warning: transmute from a reference to a pointer
[INFO] [stderr]    --> src/i2c.rs:184:27
[INFO] [stderr]     |
[INFO] [stderr] 184 |     let p_args: *mut u8 = mem::transmute(&mut args);
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&mut args as *mut i2c::i2c_ioctl_data as *mut u8`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_transmute)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_transmute
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.47s
[INFO] running `"docker" "inspect" "f576bc08c7ddd435ecb6073ec5bd67a739075360d94f5617125545d3999b8923"`
[INFO] running `"docker" "rm" "-f" "f576bc08c7ddd435ecb6073ec5bd67a739075360d94f5617125545d3999b8923"`
[INFO] [stdout] f576bc08c7ddd435ecb6073ec5bd67a739075360d94f5617125545d3999b8923