1 warning: label name `'b` shadows a label name that is already in scope
2 --> $DIR/macro-lifetime-used-with-labels.rs:21:9
5 | ^^ label `'b` already in scope
8 | -- first declared here
10 | -------- in this macro invocation
12 = note: this warning originates in the macro `br2` (in Nightly builds, run with -Z macro-backtrace for more info)
14 warning: 1 warning emitted