1 error: expected one of `:`, `@`, or `|`, found `<`
2 --> $DIR/pat-lt-bracket-2.rs:1:7
5 | ^ expected one of `:`, `@`, or `|`
7 = note: anonymous parameters are removed in the 2018 edition (see RFC 1685)
8 help: if this is a `self` type, give it a parameter name
10 LL | fn a(self: B<) {}
12 help: if this is a type, explicitly ignore the parameter name
17 error: aborting due to previous error