Default Cant Build for find 5

Hello, I am new to the community and although I have flashed loads of roms to various devices this is the first I have tried to build from source.

As it says in the title I am trying to build for my Oppo find 5 which there is a nightly build for, I wanted to try and build from source though.

I have set up the build environment as described on the omni website.

I have followed a set of instructions but when I come to build using
Code:
brunch find5
i dont get a zip in the out folder. I do get the following notes though in the terminal after the build.

Quote:
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.