This is what worked for the YC demo (zmq -> Unreal Engine)

Cargo.lock

@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "aho-corasick"
 version = "0.7.15"
@@ -285,9 +287,7 @@ dependencies = [
 
 [[package]]
 name = "kinect"
-version = "0.0.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f185ce99cfd26fb71672096f68709eabc8a20d20f42fece762fe7dd104b4fc40"
+version = "0.0.6"
 dependencies = [
  "k4a-sys-temp",
 ]

Cargo.toml

@@ -16,8 +16,8 @@ bytes = "1.0.1"
 clap = "3.0.0-beta.1"
 env_logger = "0.7.1"
 k4a-sys-temp = "0.2.3"
-#kinect = { path = "../kinect.rs" }
-kinect = "0.0.5"
+kinect = { path = "../kinect.rs" }
+#kinect = "0.0.5"
 libc = "0.2.68"
 log = "0.4.11"
 num-traits = "0.2.14"

build.rs

@@ -17,6 +17,11 @@ pub fn main() -> Result<(), BuildError> {
     let profile = std::env::var("PROFILE")?;
     let destination = format!("target/{}/deps/k4a.lib", &profile);
     fs::copy("vendor/k4a.lib", &destination)?;
+  } else {
+    // NB(2022-03-12): It's not finding the depth engine sofile on Linux. 
+    // Maybe this will fix. This search path was installed by the Debian package,
+    // not building from source.
+    println!(r"cargo:rustc-link-search=/usr/lib/x86_64-linux-gnu/libk4a1.4/");
   }
 
   Ok(())

src/main_zeromq.rs

@@ -29,8 +29,11 @@ use zmq::{Error, Socket, Context, DONTWAIT};
 use crate::zeromq::protocol::{encode_point_data, send_message};
 
 
-const SOCKET_ADDRESS : &'static str = "tcp://127.0.0.1:8888";
+//const SOCKET_ADDRESS : &'static str = "tcp://127.0.0.1:8888";
 //const SOCKET_ADDRESS : &'static str = "tcp://192.168.50.3:8888";
+//const SOCKET_ADDRESS : &'static str = "tcp://192.168.4.64:8888";
+//const SOCKET_ADDRESS : &'static str = "tcp://10.154.106.143:8888";
+const SOCKET_ADDRESS : &'static str = "tcp://10.154.106.144:8888";
 
 /// The command line args for the program.
 #[derive(Clap, Debug, Clone)]
@@ -98,8 +101,9 @@ fn main() -> AnyhowResult<()> {
   println!("Opening device...");
   thread::sleep(Duration::from_millis(100));
 
-  let device = Device::open(1)?;
+  let device = Device::open(0)?;
 
+  println!("Configuring device...");
   let mut config = DeviceConfiguration::init_disable_all();
 
   let mut camera_fps = k4a_sys::k4a_fps_t_K4A_FRAMES_PER_SECOND_30;
@@ -140,6 +144,8 @@ fn main() -> AnyhowResult<()> {
   let mut socket = context.socket(zmq::PUSH).unwrap();
   //let mut socket = context.socket(zmq::REQ).unwrap();
 
+  println!("Socket address: {}", SOCKET_ADDRESS);
+  
   //socket.bind(SOCKET_ADDRESS).unwrap();
   socket.connect(SOCKET_ADDRESS).unwrap();