multiple pattern vars:
x is defined at testdata/language-features/basic-values/def02.reject.lc 1:8-1:9
x is defined at testdata/language-features/basic-values/def02.reject.lc 1:6-1:7

------------ trace
!multiple pattern vars:
x is defined at testdata/language-features/basic-values/def02.reject.lc 1:8-1:9
x is defined at testdata/language-features/basic-values/def02.reject.lc 1:6-1:7