repr should use the expression form of types (:: before <)

[jruderman]

range(0, 10)

prints as

std::iter::Range<int>{state: 0, stop: 10, one: 1}

it should print as

std::iter::Range::<int>{state: 0, stop: 10, one: 1}

[thestinger]

repr is never going to print entirely valid Rust code, so it might not be worth doing this

[emberian]

I don't think this is worth doing.