I am having some troubles with programming my radio for a school project, is there anyone that can help me? 
Below I have a copy of the output.
Using library radio_1_0_0 at version 1.0.0 in folder: /home/builder/opt/libraries/latest/radio_1_0_0
In file included from /tmp/131306777/sketch_may7a/sketch_may7a.ino:5:0:
/home/builder/opt/libraries/latest/radio_1_0_0/src/TEA5767.h:22:21: fatal error: arduino.h: No such file or directory
compilation terminated.
exit status 1
Looks like the library was developed by someone on Windows without the necessary knowledge. "arduino.h" must read "Arduino.h". C/C++ is case sensitive as filesystems are on modern operating systems. Filesystems on Windows are case-insensitive, so this faulty library might compile there. Fix the library by replacing the leading 'a' by a 'A'.
The library author fixed the bug 3.5 years ago, but unfortunately they didn't bother to create a new release since that time, so the buggy version is what's available from the Arduino Library Manager: