Workaround unstable CI for flay
It has been consistently failling on the first run and passing on the retry. I don't know why it is happening but I believe it is related to the CI environment because running locally the following test I could not reproduce this error:
while [ ! $(diff current_flay_output.txt expected_flay_output.txt) ]
do
find . -type f -name '*.rb' -exec flay -s {} + > current_flay_output.txt; echo "ok"
done