Compile errors on latest nightly (2020-01-02)

[novacrazy]

Trying to install 823c152 with cargo xtask install with rustc 1.42.0-nightly (0a58f5864 2020-01-02) results in this error:

error: truncating cast: the value 18446744073709519013 requires 64 bits but the target type is only 32 bits
   --> crates\ra_lsp_server\src\main_loop.rs:718:43
    |
718 |                     Response::new_err(id, ErrorCode::InternalError as i32, e.to_string())
    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[deny(const_err)]` on by default

error: truncating cast: the value 18446744073709518815 requires 64 bits but the target type is only 32 bits
   --> crates\ra_lsp_server\src\main_loop.rs:714:25
    |
714 |                         ErrorCode::ContentModified as i32,
    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: truncating cast: the value 18446744073709519016 requires 64 bits but the target type is only 32 bits
   --> crates\ra_lsp_server\src\world.rs:242:23
    |
242 |                 code: ErrorCode::InvalidRequest as i32,
    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: truncating cast: the value 18446744073709519014 requires 64 bits but the target type is only 32 bits
   --> crates\ra_lsp_server\src\main_loop\handlers.rs:502:13
    |
502 |             ErrorCode::InvalidParams as i32,
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: truncating cast: the value 18446744073709519015 requires 64 bits but the target type is only 32 bits
   --> crates\ra_lsp_server\src\main_loop.rs:691:21
    |
691 |                     ErrorCode::MethodNotFound as i32,
    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: truncating cast: the value 18446744073709518816 requires 64 bits but the target type is only 32 bits
   --> crates\ra_lsp_server\src\main_loop.rs:522:21
    |
522 |                     ErrorCode::RequestCanceled as i32,
    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 6 previous errors

error: could not compile `ra_lsp_server`.

Is this an error with rust-analyzer or the latest nightly?

[sinkuu]

This will be fixed by rust-lang/rust#67822