1 error: repetition matches empty token tree
2 --> $DIR/issue-5067.rs:14:8
7 error: repetition matches empty token tree
8 --> $DIR/issue-5067.rs:16:8
13 error: repetition matches empty token tree
14 --> $DIR/issue-5067.rs:22:9
16 LL | ( [$()*] ) => {};
19 error: repetition matches empty token tree
20 --> $DIR/issue-5067.rs:24:9
22 LL | ( [$()+] ) => {};
25 error: repetition matches empty token tree
26 --> $DIR/issue-5067.rs:30:8
28 LL | ( $($()* $(),* $(a)* $(a),* )* ) => {};
29 | ^^^^^^^^^^^^^^^^^^^^^^^^^^
31 error: repetition matches empty token tree
32 --> $DIR/issue-5067.rs:32:8
34 LL | ( $($()* $(),* $(a)* $(a),* )+ ) => {};
35 | ^^^^^^^^^^^^^^^^^^^^^^^^^^
37 error: repetition matches empty token tree
38 --> $DIR/issue-5067.rs:38:12
40 LL | ( $(a $()+)* ) => {};
43 error: repetition matches empty token tree
44 --> $DIR/issue-5067.rs:40:12
46 LL | ( $(a $()*)+ ) => {};
49 error: repetition matches empty token tree
50 --> $DIR/issue-5067.rs:48:18
52 LL | (a $e1:expr $($(, a $e2:expr)*)*) => ([$e1 $($(, $e2)*)*]);
55 error: repetition matches empty token tree
56 --> $DIR/issue-5067.rs:60:8
61 error: aborting due to 10 previous errors