1 files changed, 0 insertions, 58 deletions
diff --git a/src/libcore/ops/try.rs b/src/libcore/ops/try.rs
deleted file mode 100644
index 9bc35ae1f5c..00000000000
--- a/src/libcore/ops/try.rs
+++ /dev/null
@@ -1,58 +0,0 @@
-/// A trait for customizing the behavior of the `?` operator.
-///
-/// A type implementing `Try` is one that has a canonical way to view it
-/// in terms of a success/failure dichotomy. This trait allows both
-/// extracting those success or failure values from an existing instance and
-/// creating a new instance from a success or failure value.
-#[unstable(feature = "try_trait", issue = "42327")]
-#[rustc_on_unimplemented(
-    on(
-        all(
-            any(from_method = "from_error", from_method = "from_ok"),
-            from_desugaring = "QuestionMark"
-        ),
-        message = "the `?` operator can only be used in {ItemContext} \
-                    that returns `Result` or `Option` \
-                    (or another type that implements `{Try}`)",
-        label = "cannot use the `?` operator in {ItemContext} that returns `{Self}`",
-        enclosing_scope = "this function should return `Result` or `Option` to accept `?`"
-    ),
-    on(
-        all(from_method = "into_result", from_desugaring = "QuestionMark"),
-        message = "the `?` operator can only be applied to values \
-                    that implement `{Try}`",
-        label = "the `?` operator cannot be applied to type `{Self}`"
-    )
-)]
-#[doc(alias = "?")]
-#[lang = "try"]
-pub trait Try {
-    /// The type of this value when viewed as successful.
-    #[unstable(feature = "try_trait", issue = "42327")]
-    type Ok;
-    /// The type of this value when viewed as failed.
-    #[unstable(feature = "try_trait", issue = "42327")]
-    type Error;
-
-    /// Applies the "?" operator. A return of `Ok(t)` means that the
-    /// execution should continue normally, and the result of `?` is the
-    /// value `t`. A return of `Err(e)` means that execution should branch
-    /// to the innermost enclosing `catch`, or return from the function.
-    ///
-    /// If an `Err(e)` result is returned, the value `e` will be "wrapped"
-    /// in the return type of the enclosing scope (which must itself implement
-    /// `Try`). Specifically, the value `X::from_error(From::from(e))`
-    /// is returned, where `X` is the return type of the enclosing function.
-    #[unstable(feature = "try_trait", issue = "42327")]
-    fn into_result(self) -> Result<Self::Ok, Self::Error>;
-
-    /// Wrap an error value to construct the composite result. For example,
-    /// `Result::Err(x)` and `Result::from_error(x)` are equivalent.
-    #[unstable(feature = "try_trait", issue = "42327")]
-    fn from_error(v: Self::Error) -> Self;
-
-    /// Wrap an OK value to construct the composite result. For example,
-    /// `Result::Ok(x)` and `Result::from_ok(x)` are equivalent.
-    #[unstable(feature = "try_trait", issue = "42327")]
-    fn from_ok(v: Self::Ok) -> Self;
-}