…alse positive

rust-lang/rust-clippy#8771

    error: this type has already been used as a bound predicate
      --> impl/src/generics.rs:60:61
       |
    60 |     pub fn insert(&mut self, ty: impl ToTokens, bound: impl ToTokens) {
       |                                                             ^^^^^^^^
       |
       = note: `-D clippy::type-repetition-in-bounds` implied by `-D clippy::pedantic`
       = help: consider combining the bounds: `impl ToTokens: ToTokens + ToTokens`
       = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_repetition_in_bounds

    error: this trait bound is already specified in the where clause
      --> impl/src/generics.rs:60:39
       |
    60 |     pub fn insert(&mut self, ty: impl ToTokens, bound: impl ToTokens) {
       |                                       ^^^^^^^^
       |
       = note: `-D clippy::trait-duplication-in-bounds` implied by `-D clippy::pedantic`
       = help: consider removing this trait bound
       = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trait_duplication_in_bounds

This defaults to components miri + rust-src.

    error: manual implementation of `Iterator::find`
      --> impl/src/prop.rs:76:5
       |
    76 | /     for field in fields {
    77 | |         if field.attrs.from.is_some() {
    78 | |             return Some(field);
    79 | |         }
    80 | |     }
    81 | |     None
       | |________^ help: replace with an iterator: `fields.iter().find(|&field| field.attrs.from.is_some())`
       |
       = note: `-D clippy::manual-find` implied by `-D clippy::all`
       = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_find

    error: manual implementation of `Iterator::find`
       --> impl/src/prop.rs:105:5
        |
    105 | /     for field in fields {
    106 | |         if field.is_backtrace() {
    107 | |             return Some(field);
    108 | |         }
    109 | |     }
    110 | |     None
        | |________^ help: replace with an iterator: `fields.iter().find(|&field| field.is_backtrace())`
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_find