Remove FnBox specialization of impl FnOnce for Box<impl FnOnce>.

2 files changed, 0 insertions, 24 deletions

diff --git a/src/test/ui/unsized-locals/fnbox-compat.rs b/src/test/ui/unsized-locals/fnbox-compat.rs
deleted file mode 100644
index c2c385e9fea..00000000000
--- a/src/test/ui/unsized-locals/fnbox-compat.rs
+++ /dev/null
@@ -1,13 +0,0 @@
-#![feature(fnbox)]
-
-use std::boxed::FnBox;
-
-fn call_it<T>(f: Box<dyn FnBox(&i32) -> T>) -> T {
-    f(&42)
-    //~^ERROR implementation of `std::ops::FnOnce` is not general enough
-}
-
-fn main() {
-    let s = "hello".to_owned();
-    assert_eq!(&call_it(Box::new(|_| s)) as &str, "hello");
-}
diff --git a/src/test/ui/unsized-locals/fnbox-compat.stderr b/src/test/ui/unsized-locals/fnbox-compat.stderr
deleted file mode 100644
index c37bfaa47f7..00000000000
--- a/src/test/ui/unsized-locals/fnbox-compat.stderr
+++ /dev/null
@@ -1,11 +0,0 @@
-error: implementation of `std::ops::FnOnce` is not general enough
-  --> $DIR/fnbox-compat.rs:6:5
-   |
-LL |     f(&42)
-   |     ^^^^^^
-   |
-   = note: `std::ops::FnOnce<(&'0 i32,)>` would have to be implemented for the type `std::boxed::Box<(dyn for<'r> std::boxed::FnBox<(&'r i32,), Output=T> + 'static)>`, for some specific lifetime `'0`
-   = note: but `std::ops::FnOnce<(&'1 i32,)>` is actually implemented for the type `std::boxed::Box<(dyn std::boxed::FnBox<(&'1 i32,), Output=T> + '_)>`, for some specific lifetime `'1`
-
-error: aborting due to previous error
-