can't put tracing behind a feature without an extra crate :(

crates/wiggle/src/lib.rs

@@ -15,7 +15,9 @@ mod borrow;
 mod error;
 mod guest_type;
 mod region;
-pub mod tracing;
+pub mod tracing {
+    pub use tracing::*;
+}
 
 pub use borrow::BorrowChecker;
 use borrow::BorrowHandle;

crates/wiggle/src/tracing.rs

@@ -1,11 +0,0 @@
-#[cfg(feature = "tracing")]
-pub use tracing_crate::*;
-
-#[cfg(not(feature = "tracing"))]
-mod noop_tracing {
-    // TODO fill in rest of the noop interface
-    // idk how to do this because macro_rules! / #[macro_export] doesn't follow the usual module
-    // visibility rules.
-}
-#[cfg(not(feature = "tracing"))]
-pub use noop_tracing::*;