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  Compiling REx `\n \s* x '
  size 7 Got 60 bytes for offset annotations.
...
     4:   SPACE(0)
     5: EXACT <x>(7)
     7: END(0)

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    Setting an EVAL scope, savestack=17
    48 <y dog> <
...
                             SPACE can match 2 times out of 2147483647
+...
    Setting an EVAL scope, savestack=17
                              failed...

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  Compiling REx `^ \s* x '
  size 6 Got 52 bytes for offset annotations.
...
     3:   SPACE(0)
     4: EXACT <x>(6)
     6: END(0)

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  Guessing start of match, REx `^ \s* x ' against ` The quick brown fr
+og jumped over the lazy dog
    The quick b...'...
...
                             SPACE can match 2 times out of 2147483647
+...
    Setting an EVAL scope, savestack=17
                              failed...

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      Rate    lb   sol    nl
lb   162/s    --  -87%  -93%
sol 1257/s  674%    --  -45%
nl  2272/s 1300%   81%    --