1 error: no rules expected the token `enum E { }`
2 --> $DIR/nonterminal-matching.rs:19:10
4 LL | macro n(a $nt_item b) {
5 | --------------------- when calling this macro
8 | ^^^^^^^^ no rules expected this token in macro call
10 LL | complex_nonterminal!(enum E {});
11 | -------------------------------- in this macro invocation
13 = note: this error originates in the macro `complex_nonterminal` (in Nightly builds, run with -Z macro-backtrace for more info)
15 error: aborting due to previous error