Code panicks when using vulkan

[Raj2032]

I have used both imgui-wgpu-rs and BlueEngine and they both have the same issues when using vulkan. Here is the output:

cargo run --release --example hello-world
    Finished `release` profile [optimized] target(s) in 0.12s
     Running `target/release/examples/hello-world`
WARNING: radv is not a conformant Vulkan implementation, testing use only.
thread 'main' panicked at examples/hello-world.rs:67:10:
called `Option::unwrap()` on a `None` value
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

I remmeber in the previous versions this used to work but not anymore.

I am using ARch based linux and after running lspci -nnk | grep -i -EA3 "3d|display|vga" I got this output:

01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Hawaii XT / Grenada XT [Radeon R9 290X/390X] [1002:67b0]
	Subsystem: ASUSTeK Computer Inc. R9 290X DirectCU II [1043:046a]
	Kernel driver in use: amdgpu
	Kernel modules: radeon, amdgpu

as you can see I am using amdgpu drivers successfully which does support vulkan, not radeon.