Rust core compilation errors

    Checking core v0.0.0 (C:\Users\Stovent\Documents\Dev\rust\library\core)
error: cannot find a built-in macro with name `unreachable`
   --> library\core\src\macros\mod.rs:603:1
    |
603 | / macro_rules! unreachable {
604 | |     // Expands to either `$crate::panic::unreachable_2015` or `$crate::panic::unreachable_2021`
605 | |     // depending on the edition of the caller.
606 | |     ($($arg:tt)*) => {
607 | |         /* compiler built-in */
608 | |     };
609 | | }
    | |_^

error: macro expansion ends with an incomplete expression: expected expression
   --> library\core\src\iter\adapters\zip.rs:192:22
    |
192 |                   _ => unreachable!(),
    |                        ^^^^^^^^^^^^^^ expected expression
...
207 |       zip_impl_general_defaults! {}
    |       ----------------------------- in this macro invocation
    |
   ::: library\core\src\macros\mod.rs:606:22
    |
606 |       ($($arg:tt)*) => {
    |  ______________________-
607 | |         /* compiler built-in */
608 | |     };
    | |_____- in this macro arm
    |
    = note: the macro call doesn't expand to an expression, but it can expand to a statement
    = note: this error originates in the macro `zip_impl_general_defaults` (in Nightly builds, run with -Z macro-backtrace for more info)
help: add `;` to interpret the expansion as a statement
    |
192 |                 _ => unreachable!();,
    |                                    +

error: macro expansion ends with an incomplete expression: expected expression
   --> library\core\src\iter\adapters\zip.rs:192:22
    |
192 |                   _ => unreachable!(),
    |                        ^^^^^^^^^^^^^^ expected expression
...
240 |       zip_impl_general_defaults! {}
    |       ----------------------------- in this macro invocation
    |
   ::: library\core\src\macros\mod.rs:606:22
    |
606 |       ($($arg:tt)*) => {
    |  ______________________-
607 | |         /* compiler built-in */
608 | |     };
    | |_____- in this macro arm
    |
    = note: the macro call doesn't expand to an expression, but it can expand to a statement
    = note: this error originates in the macro `zip_impl_general_defaults` (in Nightly builds, run with -Z macro-backtrace for more info)
help: add `;` to interpret the expansion as a statement
    |
192 |                 _ => unreachable!();,
    |                                    +

error: macro expansion ends with an incomplete expression: expected expression
   --> library\core\src\lazy.rs:59:27
    |
59  |                   Err(_) => unreachable!(),
    |                             ^^^^^^^^^^^^^^ expected expression
    |
   ::: library\core\src\macros\mod.rs:606:22
    |
606 |       ($($arg:tt)*) => {
    |  ______________________-
607 | |         /* compiler built-in */
608 | |     };
    | |_____- in this macro arm
    |
    = note: the macro call doesn't expand to an expression, but it can expand to a statement
help: add `;` to interpret the expansion as a statement
    |
59  |                 Err(_) => unreachable!();,
    |                                         +

error: macro expansion ends with an incomplete expression: expected expression
   --> library\core\src\slice\mod.rs:101:14
    |
101 |           _ => unreachable!(),
    |                ^^^^^^^^^^^^^^ expected expression
    |
   ::: library\core\src\macros\mod.rs:606:22
    |
606 |       ($($arg:tt)*) => {
    |  ______________________-
607 | |         /* compiler built-in */
608 | |     };
    | |_____- in this macro arm
    |
    = note: the macro call doesn't expand to an expression, but it can expand to a statement
help: add `;` to interpret the expansion as a statement
    |
101 |         _ => unreachable!();,
    |                            +

error: macro expansion ends with an incomplete expression: expected expression
   --> library\core\src\future\join.rs:166:22
    |
166 |                   _ => unreachable!(),
    |                        ^^^^^^^^^^^^^^ expected expression
    |
   ::: library\core\src\macros\mod.rs:606:22
    |
606 |       ($($arg:tt)*) => {
    |  ______________________-
607 | |         /* compiler built-in */
608 | |     };
    | |_____- in this macro arm
    |
    = note: the macro call doesn't expand to an expression, but it can expand to a statement
help: add `;` to interpret the expansion as a statement
    |
166 |                 _ => unreachable!();,
    |                                    +

error: macro expansion ends with an incomplete expression: expected expression
   --> library\core\src\future\join.rs:187:37
    |
187 |                   MaybeDone::Taken => unreachable!(),
    |                                       ^^^^^^^^^^^^^^ expected expression
    |
   ::: library\core\src\macros\mod.rs:606:22
    |
606 |       ($($arg:tt)*) => {
    |  ______________________-
607 | |         /* compiler built-in */
608 | |     };
    | |_____- in this macro arm
    |
    = note: the macro call doesn't expand to an expression, but it can expand to a statement
help: add `;` to interpret the expansion as a statement
    |
187 |                 MaybeDone::Taken => unreachable!();,
    |                                                   +

error[E0308]: mismatched types
   --> library\core\src\iter\adapters\zip.rs:226:64
    |
226 |     default unsafe fn get_unchecked(&mut self, _idx: usize) -> <Self as Iterator>::Item
    |                       -------------                            ^^^^^^^^^^^^^^^^^^^^^^^^ expected tuple, found `()`
    |                       |
    |                       implicitly returns `()` as its body has no tail or `return` expression
    |
    = note:  expected tuple `(<A as Iterator>::Item, <B as Iterator>::Item)`
            found unit type `()`

error[E0308]: mismatched types
    --> library\core\src\iter\traits\iterator.rs:3588:5
     |
3588 | /     {
3589 | |         unreachable!("Always specialized");
3590 | |     }
     | |_____^ expected associated type, found `()`
     |
     = note: expected associated type `<Self as Iterator>::Item`
                      found unit type `()`
     = help: consider constraining the associated type `<Self as Iterator>::Item` to `()` or calling a method that returns `<Self as Iterator>::Item`
     = note: for more information, visit https://doc.rust-lang.org/book/ch19-03-advanced-traits.html

For more information about this error, try `rustc --explain E0308`.
error: could not compile `core` due to 9 previous errors