/// any value of type `Self` are safely transmutable into a value of type `Dst`, in a given `Context`,
/// notwithstanding whatever safety checks you have asked the compiler to [`Assume`] are satisfied.
#[unstable(feature = "transmutability", issue = "99571")]
-#[cfg_attr(not(bootstrap), lang = "transmute_trait")]
+#[lang = "transmute_trait"]
#[rustc_on_unimplemented(
message = "`{Src}` cannot be safely transmuted into `{Self}` in the defining scope of `{Context}`.",
label = "`{Src}` cannot be safely transmuted into `{Self}` in the defining scope of `{Context}`."
/// What transmutation safety conditions shall the compiler assume that *you* are checking?
#[unstable(feature = "transmutability", issue = "99571")]
-#[cfg_attr(not(bootstrap), lang = "transmute_opts")]
+#[lang = "transmute_opts"]
#[derive(PartialEq, Eq, Clone, Copy, Debug)]
pub struct Assume {
/// When `true`, the compiler assumes that *you* are ensuring (either dynamically or statically) that