HEAD of 2.4 now has errors with the test framework:
t/apache/expr_string.t .............. 1/32 # Failed test 27 in t/apache/expr_string.t at line 73 fail #10 # Failed test 28 in t/apache/expr_string.t at line 83 fail #9 # Failed test 29 in t/apache/expr_string.t at line 87 t/apache/expr_string.t .............. Failed 3/32 subtests