No errors in Shell when creating stream with HTTP Source + already used port

stream create --name s1 --definition "http | log"
stream create --name s2 --definition "http | log"

Caused by: java.net.BindException: Address already in use
	at sun.nio.ch.Net.bind0(Native Method)
	at sun.nio.ch.Net.bind(Net.java:344)
	at sun.nio.ch.Net.bind(Net.java:336)
	at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:199)
	at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
	at org.jboss.netty.channel.socket.nio.NioServerBoss$RegisterTask.run(NioServerBoss.java:193)
	at org.jboss.netty.channel.socket.nio.AbstractNioSelector.processTaskQueue(AbstractNioSelector.java:366)
	at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:290)
	at org.jboss.netty.channel.socket.nio.NioServerBoss.run(NioServerBoss.java:42)
	... 3 more