This is a command line utility that does two different functions.
When called with no arguments, wgpu-info will list all adapters visible to wgpu and all the information about them we have.
cargo run --bin wgpu-info
When called with any amount of arguments it will interpret all of the arguments as a command to run. It will run this command N different times, one for every combination of adapter and backend on the system.
For every command invocation, it will set WGPU_ADAPTER_NAME to the name of the adapter name and WGPU_BACKEND to the name of the backend. This is used as the primary means of testing across many adapters.