Cause
valgrind tests failed; see log for more information.
Log
running valgrind --show-leak-kinds=all --xml=yes --xml-file=/tmp/tmpu1h2q16i -- ./speller substring/dict substring/text...
checking for output "MISSPELLED WORDS\n\nca\ncats\ncaterpill\ncaterpillars\n\nWORDS MISSPELLED: 4\nWORDS IN DICTIONARY: 2\nWORDS IN TEXT: 6\n"...
checking that program exited with status 0...
checking for valgrind errors...
Invalid write of size 1: (file: dictionary.c, line: 37)
Invalid read of size 1: (file: dictionary.c, line: 68)