error[E0277]: the trait bound `Q: T3` is not satisfied
  --> $DIR/blame-trait-error.rs:24:46
   |
LL |     want(Wrapper { value: Burrito { filling: q } });
   |     ----                                     ^ the trait `T3` is not implemented for `Q`
   |     |
   |     required by a bound introduced by this call
   |
note: required for `Burrito<Q>` to implement `T2`
  --> $DIR/blame-trait-error.rs:11:13
   |
LL | impl<A: T3> T2 for Burrito<A> {}
   |         --  ^^     ^^^^^^^^^^
   |         |
   |         unsatisfied trait bound introduced here
note: required for `Wrapper<Burrito<Q>>` to implement `T1`
  --> $DIR/blame-trait-error.rs:6:13
   |
LL | impl<B: T2> T1 for Wrapper<B> {}
   |         --  ^^     ^^^^^^^^^^
   |         |
   |         unsatisfied trait bound introduced here
note: required by a bound in `want`
  --> $DIR/blame-trait-error.rs:21:12
   |
LL | fn want<V: T1>(_x: V) {}
   |            ^^ required by this bound in `want`
help: consider restricting type parameter `Q`
   |
LL | fn example<Q: T3>(q: Q) {
   |             ++++

error: aborting due to previous error

For more information about this error, try `rustc --explain E0277`.