$ time blead -wE 'my $x = `cat 2`'

real	0m8.851s
user	0m0.980s
sys	0m3.795s

$ time blead -wE 'my $x = `cat 1`'
Segmentation fault      (core dumped)

real	0m5.694s
user	0m0.397s
sys	0m1.378s