+resp="$(curl -s --include -d username=foo -d password=secret "http://${ctrlhostport}/arvados/v1/users/authenticate" | tee $debug)"
+check_contains "${resp}" "HTTP/1.1 200"
+check_contains "${resp}" '"api_token":"'
+check_contains "${resp}" '"scopes":["all"]'
+check_contains "${resp}" '"uuid":"zzzzz-gj3su-'