warning: casting to the same type is unnecessary (`u16` -> `u16`)
   --> src/ltdc.rs:174:23
    |
174 |                 .bits(total_height as u16)
    |                       ^^^^^^^^^^^^^^^^^^^ help: try: `total_height`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting to the same type is unnecessary (`u16` -> `u16`)
   --> src/ltdc.rs:172:23
    |
172 |                 .bits(total_width as u16)
    |                       ^^^^^^^^^^^^^^^^^^ help: try: `total_width`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting to the same type is unnecessary (`u16` -> `u16`)
   --> src/ltdc.rs:168:23
    |
168 |                 .bits((config.v_sync + config.v_back_porch + config.active_height - 1) as u16)
    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(config.v_sync + config.v_back_porch + config.active_height - 1)`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting to the same type is unnecessary (`u16` -> `u16`)
   --> src/ltdc.rs:166:23
    |
166 |                 .bits((config.h_sync + config.h_back_porch + config.active_width - 1) as u16)
    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(config.h_sync + config.h_back_porch + config.active_width - 1)`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting to the same type is unnecessary (`u16` -> `u16`)
   --> src/ltdc.rs:162:23
    |
162 |                 .bits((config.v_sync + config.v_back_porch - 1) as u16)
    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(config.v_sync + config.v_back_porch - 1)`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting to the same type is unnecessary (`u16` -> `u16`)
   --> src/ltdc.rs:160:23
    |
160 |                 .bits((config.h_sync + config.h_back_porch - 1) as u16)
    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(config.h_sync + config.h_back_porch - 1)`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting to the same type is unnecessary (`u16` -> `u16`)
   --> src/ltdc.rs:156:23
    |
156 |                 .bits((config.v_sync - 1) as u16)
    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(config.v_sync - 1)`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting to the same type is unnecessary (`u16` -> `u16`)
   --> src/ltdc.rs:154:23
    |
154 |                 .bits((config.h_sync - 1) as u16)
    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(config.h_sync - 1)`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: unneeded late initialization
  --> src/ltdc.rs:86:9
   |
86 |         let base_clk: u32;
   |         ^^^^^^^^^^^^^^^^^^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
   = note: `#[warn(clippy::needless_late_init)]` on by default
help: declare `base_clk` here
   |
87 |         let base_clk: u32 = match &hse {
   |         +++++++++++++++++++
help: remove the assignments from the `match` arms
   |
88 ~             Some(hse) => hse.freq.raw(),
89 |             // If no HSE is provided, we use the HSI clock at 16 MHz
90 ~             None => 16_000_000,
   |
help: add a semicolon after the `match` expression
   |
91 |         };
   |          +

warning: casting to the same type is unnecessary (`u8` -> `u8`)
   --> src/i2c.rs:317:25
    |
317 |                 presc = tmp_presc as u8;
    |                         ^^^^^^^^^^^^^^^ help: try: `tmp_presc`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting to the same type is unnecessary (`u32` -> `u32`)
   --> src/rcc.rs:869:65
    |
869 |             let one_over_m = ((1 << Self::FIXED_POINT_LSHIFT) / (m as u32) + 1) >> 1;
    |                                                                 ^^^^^^^^^^ help: try: `m`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting to the same type is unnecessary (`u64` -> `u64`)
   --> src/rcc.rs:669:36
    |
669 | ...                   (((base_clk as u64 * self.pllsain as u64 * one_over_m as u64)
    |                          ^^^^^^^^^^^^^^^ help: try: `base_clk`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting to the same type is unnecessary (`u64` -> `u64`)
   --> src/rcc.rs:645:43
    |
645 |                         let pll48clk = (((base_clk as u64 * self.plln as u64 * one_over_m as u64)
    |                                           ^^^^^^^^^^^^^^^ help: try: `base_clk`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting to the same type is unnecessary (`u64` -> `u64`)
   --> src/rcc.rs:629:25
    |
629 |             sysclk = (((base_clk as u64 * self.plln as u64 * one_over_m as u64)
    |                         ^^^^^^^^^^^^^^^ help: try: `base_clk`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
    = note: `#[warn(clippy::unnecessary_cast)]` on by default

warning: this `impl` can be derived
   --> src/dma.rs:640:1
    |
640 | / impl Default for Interrupts {
641 | |     fn default() -> Self {
642 | |         Self {
643 | |             transfer_complete: false,
...   |
648 | |     }
649 | | }
    | |_^
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#derivable_impls
    = note: `#[warn(clippy::derivable_impls)]` on by default
    = help: remove the manual implementation...
help: ...and instead derive it
    |
633 + #[derive(Default)]
634 | pub struct Interrupts {
    |

warning: the following explicit lifetimes could be elided: 'r
   --> src/dma.rs:588:27
    |
588 |                   fn select<'r>(w: &'r mut dma2::st::cr::W)
    |                             ^^      ^^
589 |                       -> &'r mut dma2::st::cr::W
    |                           ^^
...
600 | / impl_channel!(
601 | |     Channel0, 0;
602 | |     Channel1, 1;
603 | |     Channel2, 2;
...   |
608 | |     Channel7, 7;
609 | | );
    | |_- in this macro invocation
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
    = note: `#[warn(clippy::needless_lifetimes)]` on by default
    = note: this warning originates in the macro `impl_channel` (in Nightly builds, run with -Z macro-backtrace for more info)
help: elide the lifetimes
    |
588 ~                 fn select(w: &mut dma2::st::cr::W)
589 ~                     -> &mut dma2::st::cr::W
    |

warning: unnecessary `unsafe` block
   --> src/timer.rs:535:31
    |
535 |                   ccr.write(|w| unsafe { w.bits(value) })
    |                                 ^^^^^^ unnecessary `unsafe` block
...
729 | / hal! {
730 | |     pac::TIM2: [Timer2, u32, c: (CH4), m: tim2,],
731 | |     pac::TIM3: [Timer3, u16, c: (CH4), m: tim3,],
732 | |     pac::TIM4: [Timer4, u16, c: (CH4), m: tim3,],
...   |
744 | |     pac::TIM11: [Timer11, u16, c: (CH1),],
745 | | }
    | |_- in this macro invocation
    |
    = note: this warning originates in the macro `with_pwm` which comes from the expansion of the macro `hal` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: unnecessary `unsafe` block
   --> src/timer.rs:535:31
    |
535 |                   ccr.write(|w| unsafe { w.bits(value) })
    |                                 ^^^^^^ unnecessary `unsafe` block
...
729 | / hal! {
730 | |     pac::TIM2: [Timer2, u32, c: (CH4), m: tim2,],
731 | |     pac::TIM3: [Timer3, u16, c: (CH4), m: tim3,],
732 | |     pac::TIM4: [Timer4, u16, c: (CH4), m: tim3,],
...   |
744 | |     pac::TIM11: [Timer11, u16, c: (CH1),],
745 | | }
    | |_- in this macro invocation
    |
    = note: `#[warn(unused_unsafe)]` on by default
    = note: this warning originates in the macro `with_pwm` which comes from the expansion of the macro `hal` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: unneeded sub `cfg` when there is only one condition
   --> src/timer/pwm_input.rs:209:7
    |
209 | #[cfg(any(feature = "stm32f411",))]
    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `feature = "stm32f411"`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#non_minimal_cfg

warning: unneeded sub `cfg` when there is only one condition
   --> src/serial.rs:541:7
    |
541 | #[cfg(any(feature = "device-selected",))]
    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `feature = "device-selected"`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#non_minimal_cfg
    = note: `#[warn(clippy::non_minimal_cfg)]` on by default

warning: field `0` is never read
   --> build.rs:128:8
    |
128 |     Io(io::Error),
    |     -- ^^^^^^^^^
    |     |
    |     field in this variant
    |
help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
    |
128 |     Io(()),
    |        ~~

warning: field `0` is never read
   --> build.rs:127:9
    |
127 |     Env(env::VarError),
    |     --- ^^^^^^^^^^^^^
    |     |
    |     field in this variant
    |
    = note: `#[warn(dead_code)]` on by default
help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
    |
127 |     Env(()),
    |         ~~