error[E0106]: missing lifetime specifier
  --> $DIR/issue-26638.rs:11:58
   |
LL | fn parse_type(iter: Box<Iterator<Item=&str>+'static>) -> &str { iter.next() }
   |                                                          ^ expected lifetime parameter
   |
   = help: this function's return type contains a borrowed value, but the signature does not say which one of `iter`'s 2 lifetimes it is borrowed from

error[E0106]: missing lifetime specifier
  --> $DIR/issue-26638.rs:14:40
   |
LL | fn parse_type_2(iter: fn(&u8)->&u8) -> &str { iter() }
   |                                        ^ expected lifetime parameter
   |
   = help: this function's return type contains a borrowed value with an elided lifetime, but the lifetime cannot be derived from the arguments
   = help: consider giving it an explicit bounded or 'static lifetime

error[E0106]: missing lifetime specifier
  --> $DIR/issue-26638.rs:17:22
   |
LL | fn parse_type_3() -> &str { unimplemented!() }
   |                      ^ expected lifetime parameter
   |
   = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
   = help: consider giving it a 'static lifetime

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0106`.