ggez: ggez doesn't work with optimus (`optirun`)

Describe the bug Ggez seems to not work on optimus systems on discrete GPU. Program fails on call ContextBuilder::build (NOTE: build don’t return error, program just fails)

To Reproduce

1. create a simple project with this in main.rs:

fn main() {
    let cb = ggez::ContextBuilder::new("ggez_optimus", "Waffle");
    println!("before build");
    cb.build().unwrap();
    println!("after build");
}

1. build it: cargo build
2. run it with optirun: optirun -v target/debug/ggez_optimus the output will be like that:

[28698.115643] [INFO]Response: Yes. X is active.

[28698.115677] [INFO]Running application using virtualgl.
before build

Hardware and Software:

• ggez version: 0.5.0-rc.2
• OS: Arch Linux
• Graphics card: GeForce MX150 and Mesa DRI Intel(R) UHD Graphics 620 (Kabylake GT2) I guess
• Graphics card drivers: nvidia / Mesa