1 files changed, 21 insertions, 0 deletions
diff --git a/third_party/rust/hyper/src/common/never.rs b/third_party/rust/hyper/src/common/never.rs
new file mode 100644
index 0000000000..f143caf60f
--- /dev/null
+++ b/third_party/rust/hyper/src/common/never.rs
@@ -0,0 +1,21 @@
+//! An uninhabitable type meaning it can never happen.
+//!
+//! To be replaced with `!` once it is stable.
+
+use std::error::Error;
+use std::fmt;
+
+#[derive(Debug)]
+pub(crate) enum Never {}
+
+impl fmt::Display for Never {
+    fn fmt(&self, _: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match *self {}
+    }
+}
+
+impl Error for Never {
+    fn description(&self) -> &str {
+        match *self {}
+    }
+}