It looks that the test of password authentication is broken.
t/53-fail-to-connect.t ........ ok
# Failed test 'connect is fail'
##[error] # at t/53-password.t line 35.
# undef
# doesn't match '(?^:Redis server refused password)'
# Looks like you failed 1 test of 1.
# Failed test 'wrong password'
##[error]# at t/53-password.t line 37.
It looks that the test of password authentication is broken.