user     system      total        real
flush:  0.000000   0.000000   0.000000 ( 37.931850)
Couchbase::Error::HTTP failed to execute HTTP request (key="/pools/default/buckets/default/controller/doFlush", status="503" (Service Unavailable), error=0x00)
test.rb:23:in `set': failed to store value (key="foo-0", error=0x0b) (Couchbase::Error::TemporaryFail)
	from test.rb:23:in `block in <main>'
	from test.rb:22:in `times'
	from test.rb:22:in `<main>'