malformed JSON string, neither array, object, number, string or atom, at character offset 0 (before "pst0\x{5}\x{6}\x{3}\x{0}...") at /usr/pkgs/perl/5.14.1/lib64/module/Devel/Cover/DB/IO/JSON.pm line 33

##</code><code>##

setenv DEVEL_COVER_OPTIONS '+ignore,/usr/pkgs/perl/,tests/'
setenv DEVEL_COVER_DB_FORMAT JSON