Latest Espruino build for Esp8266

Thanks for hints,
downloaded sdk 2.0 as shown in travis.yml
After compiling there are some warnings like this one:

libs/network/esp8266/ota.c:93:3: warning: format '%lX' expects argument of type 'long unsigned int', but argument 3 has type 'uint32_t' [-Wformat=]

Is there anything, I can get rid of those ?