I think this update doesn't belong to epel6.

package: drush-8.1.10-1.el6.noarch

unresolved deps:

 php-composer(symfony/yaml) >= 0:2.7.1
 php-composer(symfony/var-dumper) < 0:3.0
 php-composer(symfony/var-dumper) >= 0:2.7.1
 php-composer(symfony/finder) >= 0:2.7.1
 php-composer(symfony/event-dispatcher) >= 0:2.7.1
 php-composer(symfony/console) >= 0:2.7.1
 php-composer(psy/psysh) < 0:1.0
 php-composer(psy/psysh) >= 0:0.6
 php-composer(phpdocumentor/reflection-docblock) < 0:3.0
 php-composer(phpdocumentor/reflection-docblock) >= 0:2.0
 php-composer(pear/console_table) >= 0:1.3.0
 php-composer(consolidation/output-formatters) < 0:4
 php-composer(consolidation/output-formatters) >= 0:3
 php-composer(consolidation/annotated-command) < 0:3
 php-composer(consolidation/annotated-command) >= 0:2
 php(language) >= 0:5.4.5

karma: -1

Ooops. Correct, this version does not belong in EPEL 6. I reverted the repo but forgot to delete this build and update.

This update has been unpushed.