basic.t tests fail with Path= in cookie

[Former user]

All of the basic.t tests are failing for me when compiled with nginx/1.13.6, with something like:

Failed test 'TEST 3: hmac=md5 - header Set-Cookie ok'

at /usr/local/share/perl/5.22.1/Test/Nginx/Socket.pm line 996.

got: 'route=d20fd0a9eb6864058781ed6104e4c9fd; Path=/'

expected: 'route=d20fd0a9eb6864058781ed6104e4c9fd'

except test 7, which passes because it already expects Path=.