diff --git a/tracing-subscriber/src/filter/env/mod.rs b/tracing-subscriber/src/filter/env/mod.rs
index 005851d6..a9d93793 100644
--- a/tracing-subscriber/src/filter/env/mod.rs
+++ b/tracing-subscriber/src/filter/env/mod.rs
@@ -204,6 +204,24 @@ pub struct EnvFilter {
     regex: bool,
 }
 
+/// Creates an [`EnvFilter`] with the same directives as `self`.
+///
+/// This does *not* clone any of the dynamic state that [`EnvFilter`] acquires while attached to a
+/// subscriber.
+impl Clone for EnvFilter {
+    fn clone(&self) -> EnvFilter {
+        EnvFilter {
+            statics: self.statics.clone(),
+            dynamics: self.dynamics.clone(),
+            has_dynamics: self.has_dynamics,
+            by_id: RwLock::default(),
+            by_cs: RwLock::default(),
+            scope: ThreadLocal::new(),
+            regex: self.regex,
+        }
+    }
+}
+
 type FieldMap<T> = HashMap<Field, T>;
 
 /// Indicates that an error occurred while parsing a `EnvFilter` from an
diff --git a/tracing-subscriber/src/sync.rs b/tracing-subscriber/src/sync.rs
index ec42b834..be41f1b9 100644
--- a/tracing-subscriber/src/sync.rs
+++ b/tracing-subscriber/src/sync.rs
@@ -54,4 +54,12 @@ mod parking_lot_impl {
             Ok(self.inner.write())
         }
     }
+
+    impl<T: Default> Default for RwLock<T> {
+        fn default() -> Self {
+            RwLock {
+                inner: parking_lot::RwLock::default(),
+            }
+        }
+    }
 }