This diff between two versions bb24fa9...f4e291c seems to have started a failing test:
bb24fa9 pass: https://travis-ci.org/tabulapdf/tabula-extractor/builds/27415350
f4e291c fail: https://travis-ci.org/tabulapdf/tabula-extractor/builds/32744778
(see history https://travis-ci.org/tabulapdf/tabula-extractor/builds )
it's literally just turning off PDFBox logging so I don't think it's a regression on our part.
i do also notice that travis-ci upgraded from jruby 1.7.11 to 1.7.13 between those two logs, so that or other pkgs being upgraded are a more likely culprit. (looks like jruby is now up to 1.7.15 on travis-ci.)