[RUSTC-TIMING] gimli test:false 4.126
[RUSTC-TIMING] object test:false 6.052
warning: dropping unsupported crate type `dylib` for target `wasm32-unknown-unknown`

error: const function that might be (indirectly) exposed to stable cannot use `#[feature(const_trait_impl)]`
  --> library/std/src/sys/io/io_slice/unsupported.rs:14:25
   |
14 |         self.0 = &self.0[n..]
   |                         ^^^^^
   |
help: if the function is not (yet) meant to be exposed to stable const contexts, add `#[rustc_const_unstable]`
   |
13 +     #[rustc_const_unstable(feature = "...", issue = "...")]
14 |     pub const fn advance(&mut self, n: usize) {
   |

error: `Index` is not yet stable as a const trait
  --> library/std/src/sys/io/io_slice/unsupported.rs:14:25
   |
14 |         self.0 = &self.0[n..]
   |                         ^^^^^
   |
help: add `#![feature(const_index)]` to the crate attributes to enable
  --> library/std/src/lib.rs:426:1
   |
426+ #![feature(const_index)]
   |

error[E0015]: cannot call non-const function `core::mem::take::<&mut [u8]>` in constant functions
  --> library/std/src/sys/io/io_slice/unsupported.rs:33:21
   |
33 |         let slice = mem::take(&mut self.0);
   |                     ^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants

For more information about this error, try `rustc --explain E0015`.