Running this on Manjaro Linux gets me the following output:
OpenGL ES 3.0 Renderer: GeForce GTX 1070/PCIe/SSE2I get the same issue when running youmu-wip. Guess Godot doesn't like my PC.
ERROR: operator[]: FATAL: Index p_index=1 out of size (size()=1)
At: core/vector.h:138.
handle_crash: Program crashed with signal 4
Dumping the backtrace. Please include this when reporting the bug on https://github.com/godotengine/godot/issues
[1] linux-gate.so.1(__kernel_sigreturn+0) [0xf770fc90] (??:0)
[2] ./Alphaman_linux.x86() [0x80cbaee] (??:?)
[3] ./Alphaman_linux.x86() [0x80e0e63] (<artificial>:?)
[4] ./Alphaman_linux.x86() [0x816afc1] (<artificial>:?)
[5] ./Alphaman_linux.x86() [0x80728e9] (??:?)
[6] /usr/lib32/libc.so.6(__libc_start_main+0xf3) [0xf750c793] (??:0)
[7] ./Alphaman_linux.x86() [0x807b305] (??:?)
-- END OF BACKTRACE --
Aborted (core dumped)