defmt 1.0.1

A highly efficient logging framework that targets resource-constrained devices, like microcontrollers
Documentation 
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extern crate defmt as defmt2;

fn main() {
    let baz: Baz<Qux> = Default::default();
    defmt::info!("{}", baz);
}

trait Foo {
    type Bar;
}
#[derive(defmt::Format, Default)]
struct Baz<T: Foo> {
    field: T::Bar,
    field2: Quux<T>,
}
#[derive(defmt::Format, Default)]
struct Qux;
impl Foo for Qux {
    type Bar = Qux;
}
#[allow(dead_code)]
#[derive(defmt::Format, Default)]
enum Quux<T: Foo> {
    #[default]
    None,
    Variant1(T),
    Variant2 {
        f: T::Bar,
    },
    Variant3(T::Bar),
}

#[allow(dead_code)]
#[derive(defmt::Format)]
#[defmt(crate = defmt2)]
struct Quz;