that erase on those pins causes problems!
```
error[E0277]: the trait bound `ErasedPin<Analog>: embedded_hal::adc::Channel<ADC1>` is not satisfied
   --> src/main.rs:112:24
    |
112 |     let x: i8 = adc1.read(&mut pins[0]).unwrap();
    |                      ---- ^^^^^^^^^^^^ the trait `embedded_hal::adc::Channel<ADC1>` is not implemented for `ErasedPin<Analog>`
    |                      |
    |                      required by a bound introduced by this call
    |
    = help: the following other types implement trait `embedded_hal::adc::Channel<ADC>`:
              <stm32f1xx_hal::gpio::Pin<'A', 0, Analog> as embedded_hal::adc::Channel<ADC1>>
              <stm32f1xx_hal::gpio::Pin<'A', 0, Analog> as embedded_hal::adc::Channel<ADC2>>
              <stm32f1xx_hal::gpio::Pin<'A', 1, Analog> as embedded_hal::adc::Channel<ADC1>>
              <stm32f1xx_hal::gpio::Pin<'A', 1, Analog> as embedded_hal::adc::Channel<ADC2>>
              <stm32f1xx_hal::gpio::Pin<'A', 2, Analog> as embedded_hal::adc::Channel<ADC1>>
              <stm32f1xx_hal::gpio::Pin<'A', 2, Analog> as embedded_hal::adc::Channel<ADC2>>
              <stm32f1xx_hal::gpio::Pin<'A', 3, Analog> as embedded_hal::adc::Channel<ADC1>>
              <stm32f1xx_hal::gpio::Pin<'A', 3, Analog> as embedded_hal::adc::Channel<ADC2>>
            and 24 others
note: required by a bound in `cortex_m::prelude::_embedded_hal_adc_OneShot::read`
   --> /home/fly/.cargo/registry/src/index.crates.io-6f17d22bba15001f/embedded-hal-0.2.7/src/adc.rs:89:35
    |
89  | pub trait OneShot<ADC, Word, Pin: Channel<ADC>> {
    |                                   ^^^^^^^^^^^^ required by this bound in `_embedded_hal_adc_OneShot::read`
...
97  |     fn read(&mut self, pin: &mut Pin) -> nb::Result<Word, Self::Error>;
    |        ---- required by a bound in this associated function
```
any suggestions on how to make it work (other than passing all pins on its own, that's doable now but becomes a mess when I use more pins