private void readFully(InputStream in, byte[] bytes) throws IOException {
        int read = ByteStreams.read(in, bytes, 0, bytes.length);
        if (read == 0) {
            throw new NoBytesReadException();
        } else if (read != bytes.length) {
            throw new EOFException("reached end of stream after reading "
                    + read + " bytes; " + bytes.length + " bytes expected");
        }
    }
This is a copy of ByteStreams.readFully(), with the slight change that it throws
NoBytesReadException if zero bytes are read. Otherwise it is identical.

@param in
@param bytes
@throws IOException
src/main/java/io/fabric8/maven/docker/access/log/LogRequestor.java