Shapes and text example from README panics

[tmcw]

• Version of embedded-graphics in use (if applicable): 0.8
• Target: simulator.
• If using real hardware: [display driver used]

I'm trying to get started and tried the example in the readme from "Shapes and Text" ( https://github.com/embedded-graphics/embedded-graphics#shapes-and-text ) - but running it unmodified produces

     Running `target/debug/tidbyt-2`
thread 'main' panicked at 'tried to draw pixel twice (x: 61, y: 10)', /Users/tmcw/.cargo/registry/src/index.crates.io-6f17d22bba15001f/embedded-graphics-0.8.0/src/mock_display/mod.rs:383:13
stack backtrace:
   0: rust_begin_unwind
             at /rustc/8ede3aae28fe6e4d52b38157d7bfe0d3bceef225/library/std/src/panicking.rs:593:5
   1: core::panicking::panic_fmt
             at /rustc/8ede3aae28fe6e4d52b38157d7bfe0d3bceef225/library/core/src/panicking.rs:67:14
   2: embedded_graphics::mock_display::MockDisplay<C>::draw_pixel
             at /Users/tmcw/.cargo/registry/src/index.crates.io-6f17d22bba15001f/embedded-graphics-0.8.0/src/mock_display/mod.rs:383:13
   3: <embedded_graphics::mock_display::MockDisplay<C> as embedded_graphics_core::draw_target::DrawTarget>::draw_iter
             at /Users/tmcw/.cargo/registry/src/index.crates.io-6f17d22bba15001f/embedded-graphics-0.8.0/src/mock_display/mod.rs:714:13
   4: embedded_graphics_core::draw_target::DrawTarget::fill_contiguous
             at /Users/tmcw/.cargo/registry/src/index.crates.io-6f17d22bba15001f/embedded-graphics-core-0.4.0/src/draw_target/mod.rs:392:9
   5: embedded_graphics_core::draw_target::DrawTarget::fill_solid
             at /Users/tmcw/.cargo/registry/src/index.crates.io-6f17d22bba15001f/embedded-graphics-core-0.4.0/src/draw_target/mod.rs:408:9
   6: embedded_graphics::primitives::rectangle::styled::<impl embedded_graphics::primitives::styled::StyledDrawable<embedded_graphics::primitives::primitive_style::PrimitiveStyle<C>> for embedded_graphics_core::primitives::rectangle::Rectangle>::draw_styled
             at /Users/tmcw/.cargo/registry/src/index.crates.io-6f17d22bba15001f/embedded-graphics-0.8.0/src/primitives/rectangle/styled.rs:88:13
   7: <embedded_graphics::primitives::styled::Styled<T,S> as embedded_graphics_core::drawable::Drawable>::draw
             at /Users/tmcw/.cargo/registry/src/index.crates.io-6f17d22bba15001f/embedded-graphics-0.8.0/src/primitives/styled.rs:121:9
   8: tidbyt_2::main
             at ./src/main.rs:45:5
   9: core::ops::function::FnOnce::call_once
             at /rustc/8ede3aae28fe6e4d52b38157d7bfe0d3bceef225/library/core/src/ops/function.rs:250:5
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

My guess is that this code example should be able to complete drawing?

[Jeffrey-P-McAteer]

Wanted to buzz in, I've got the same issue. I have a small embedded display I'd like to send frames to, and the following give me this error:

let mut display: MockDisplay<BinaryColor> = MockDisplay::new();
loop {
      /*business logic*/

      let mut data = [BinaryColor::Off; 12 * 11];
      let mut fbuf = FrameBuf::new(&mut data, 12, 11);


      Line::new(Point::new(2, 2), Point::new(10, 2))
          .into_styled(PrimitiveStyle::with_stroke(BinaryColor::On, 2))
          .draw(&mut fbuf)?;
      // Write it all to the display
      let area = Rectangle::new(Point::new(0, 0), fbuf.size());

      display.fill_contiguous(&area, data)?;
}

thread 'main' panicked at /j/.cargo/registry/src/index.crates.io-6f17d22bba15001f/embedded-graphics-0.8.1/src/mock_display/mod.rs:383:13:
tried to draw pixel twice (x: 0, y: 0)
stack backtrace:
   0: rust_begin_unwind
             at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:645:5
   1: core::panicking::panic_fmt
             at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/panicking.rs:72:14
   2: camera_display::main
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.