With a standard rust install, building gives the error

error[E0554]: `#![feature]` may not be used on the stable release channel
 --> openvr_sys/src/lib.rs:1:1
  |
1 | #![feature(untagged_unions)]
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

For more information about this error, try `rustc --explain E0554`.

The readme should note the requirement of pre-release rust.

It seems a file named splash.png should be included in the source, but is not.

error: couldn't read /home/claire/GIT/index_camera_passthrough/splash.png: No such file or directory (os error 2)
  --> src/main.rs:50:30
   |
50 | static SPLASH_IMAGE: &[u8] = include_bytes!(concat!(env!("CARGO_MANIFEST_DIR"), "/splash.png"));
   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: this error originates in the macro `include_bytes` (in Nightly builds, run with -Z macro-backtrace for more info)

error: could not compile `index_camera_passthrough` due to previous error

Creating a blank 1920×960 png works fine.

The build fails with:

error[E0583]: file not found for module `events`
 --> src/main.rs:4:1
  |
4 | mod events;
  | ^^^^^^^^^^^
  |
  = help: to create the module `events`, create file "src/events.rs" or "src/events/mod.rs"

error: couldn't read /home/chris/Projects/index_camera_passthrough/splash.png: No such file or directory (os error 2)
  --> src/main.rs:50:30
   |
50 | static SPLASH_IMAGE: &[u8] = include_bytes!(concat!(env!("CARGO_MANIFEST_DIR"), "/splash.png"));
   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: this error originates in the macro `include_bytes` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0433]: failed to resolve: could not find `Action` in `events`
   --> src/main.rs:522:21
    |
522 |             events::Action::ShowOverlay => vroverlay
    |                     ^^^^^^ could not find `Action` in `events`

error[E0433]: failed to resolve: could not find `Action` in `events`
   --> src/main.rs:526:21
    |
526 |             events::Action::HideOverlay => vroverlay
    |                     ^^^^^^ could not find `Action` in `events`

error[E0433]: failed to resolve: could not find `State` in `events`
   --> src/main.rs:367:29
    |
367 |     let mut state = events::State::new(cfg.toggle_button, cfg.open_delay);
    |                             ^^^^^ not found in `events`
    |
help: consider importing this enum
    |
10  | use serde_json::ser::State;
    |

It seems b868aa5 didn't bring in the required ~~package~~ file

I built from a current checkout (cloned right before I built). I used rust nightly to compile.

I'm using Arch Linux, I did have some packages out of date, but not ones relating to steam or graphics. I have a NVIDIA GTX 1070 using proprietary drivers and I'm running steam with the native runtime.

I tried the menu button binding and the trigger binding. I have camera disabled in the SteamVR settings. Steam and SteamVR were up to date. SteamVR version is 1.22.6 Beta. I couldn't find a version number for Steam.

I was using the "Stereo" display mode.