java.lang.NullPointerException: throw with null exception
        at java.net.Socket.getOutputStream(Socket.java:934)
        at org.briarproject.bramble.plugin.tcp.TcpTransportConnection.getOutputStream(TcpTransportConnection.java:32)
        at org.briarproject.bramble.api.plugin.duplex.AbstractDuplexTransportConnection$Writer.getOutputStream(AbstractDuplexTransportConnection.java:81)
        at org.briarproject.bramble.plugin.ConnectionManagerImpl.createDuplexOutgoingSession(ConnectionManagerImpl.java:113)
        at org.briarproject.bramble.plugin.ConnectionManagerImpl.access$1200(ConnectionManagerImpl.java:31)
        at org.briarproject.bramble.plugin.ConnectionManagerImpl$ManageOutgoingDuplexConnection.run(ConnectionManagerImpl.java:379)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
        at java.lang.Thread.run(Thread.java:761)

• Android version: 7.0
• Phone model: Nexus 6 (shamu)
• Briar version: 0.16.9 (07853488)
• User comment: "App just crashed no reason."

Looks like a platform bug, but let's see if the Android code has any clues.