Benchmark: running lexicals, no_lexic, each for at least 5 CPU seconds...
  lexicals:  5 wallclock secs ( 5.43 usr + -0.01 sys =  5.42 CPU) @ 700151.48/s (n=3794821)
  no_lexic:  7 wallclock secs ( 5.34 usr +  0.00 sys =  5.34 CPU) @ 716661.80/s (n=3826974)
             Rate lexicals no_lexic
lexicals 700151/s       --      -2%
no_lexic 716662/s       2%       --