update minitest inheritance class. avoid future deprecation
removing duplicated code
normalize conditional on retry or delete call
locking rails version on 4.1.x and minitest on 5.3.x
Merge pull request #1702 from lucianosousa/patch-2

removing duplicated code
Merge pull request #1701 from lucianosousa/minitest-update

update minitest inheritance class. avoid future deprecation
Fix build
REALLY fix build
third time's a charm