Fix: Publish fails if rustup not present

crates/cli/src/tasks/rust.rs

@@ -21,7 +21,12 @@ fn cargo_cmd(subcommand: &str, build_debug: bool, args: &[&str]) -> duct::Expres
 
 pub(crate) fn build_rust(project_path: &Path, skip_clippy: bool, build_debug: bool) -> anyhow::Result<PathBuf> {
     // Make sure that we have the wasm target installed (ok to run if its already installed)
-    cmd!("rustup", "target", "add", "wasm32-unknown-unknown").run()?;
+    if let Err(err) = cmd!("rustup", "target", "add", "wasm32-unknown-unknown").run() {
+        println!(
+            "Warning: Failed to install wasm32-unknown-unknown target: {}. Is `rustup` installed?",
+            err
+        );
+    }
 
     // Note: Clippy has to run first so that it can build & cache deps for actual build while checking in parallel.
     if !skip_clippy {