/home/mass/.rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/protocol.rb:158:in `rescue in rbuf_fill': Net::ReadTimeout (Net::ReadTimeout)
	from /home/mass/.rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/protocol.rb:152:in `rbuf_fill'
	from /home/mass/.rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/protocol.rb:134:in `readuntil'
	from /home/mass/.rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/protocol.rb:144:in `readline'
	from /home/mass/.rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/http/response.rb:39:in `read_status_line'
	from /home/mass/.rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/http/response.rb:28:in `read_new'
	from /home/mass/.rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/http.rb:1406:in `block in transport_request'
	from /home/mass/.rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/http.rb:1403:in `catch'
	from /home/mass/.rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/http.rb:1403:in `transport_request'
	from /home/mass/.rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/http.rb:1376:in `request'
	from /home/mass/.rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/http.rb:508:in `block in post_form'
	from /home/mass/.rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/http.rb:852:in `start'
	from /home/mass/.rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/http.rb:582:in `start'
	from /home/mass/.rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/http.rb:506:in `post_form'
	from /home/mass/share/student/k128576/jungle_benchmark/stress_write_cassandra.rb:15:in `block (2 levels) in <main>'
	from /home/mass/share/student/k128576/jungle_benchmark/stress_write_cassandra.rb:14:in `times'
	from /home/mass/share/student/k128576/jungle_benchmark/stress_write_cassandra.rb:14:in `block in <main>'
	from /home/mass/.rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/benchmark.rb:281:in `measure'
	from /home/mass/share/student/k128576/jungle_benchmark/stress_write_cassandra.rb:11:in `<main>'