handle_error_fatal does not print the complete error

[kpreid]

Description
I tried using a render bundle and got this error:

thread 'main' panicked at 'Error in RenderBundleEncoder::finish: In a set_pipeline command', /Users/kpreid/.cargo/registry/src/g.yxqyang.asia-1ecc6299db9ec823/wgpu-0.15.0/src/backend/direct.rs:316:9

Expected vs observed behavior
The error is incomplete: it doesn't say what was wrong with the operation. Based on the line number, this appears to be because

    fn handle_error_fatal(
        &self,
        cause: impl Error + Send + Sync + 'static,
        string: &'static str,
    ) -> ! {
        panic!("Error in {string}: {cause}");
    }

prints cause but not cause's chain (like non-fatal error handling does).