"BeginWrite failure" during roslyn build

[JosephFerano]

So I ran sudo ./build.sh, getting this error;

Unhandled Exception:
System.IO.IOException: BeginWrite failure ---> System.ObjectDisposedException: The object was used after being disposed.
  at System.Net.Sockets.Socket.BeginSend (System.Byte[] buffer, Int32 offset, Int32 size, SocketFlags socket_flags, System.AsyncCallback callback, System.Object state) [0x00000] in <filename unknown>:0
  at System.Net.Sockets.NetworkStream.BeginWrite (System.Byte[] buffer, Int32 offset, Int32 size, System.AsyncCallback callback, System.Object state) [0x00000] in <filename unknown>:0
  --- End of inner exception stack trace ---
  at System.Net.Sockets.NetworkStream.BeginWrite (System.Byte[] buffer, Int32 offset, Int32 size, System.AsyncCallback callback, System.Object state) [0x00000] in <filename unknown>:0
  at Mono.Security.Protocol.Tls.RecordProtocol.BeginSendRecord (ContentType contentType, System.Byte[] recordData, System.AsyncCallback callback, System.Object state) [0x00000] in <filename unknown>:0
  at Mono.Security.Protocol.Tls.RecordProtocol.SendRecord (ContentType contentType, System.Byte[] recordData) [0x00000] in <filename unknown>:0
  at Mono.Security.Protocol.Tls.RecordProtocol.SendAlert (Mono.Security.Protocol.Tls.Alert alert) [0x00000] in <filename unknown>:0
  at Mono.Security.Protocol.Tls.RecordProtocol.SendAlert (AlertDescription description) [0x00000] in <filename unknown>:0
  at Mono.Security.Protocol.Tls.SslClientStream.NegotiateAsyncWorker (IAsyncResult result) [0x00000] in <filename unknown>:0

Thanks for the help!