racer: Build Failing with Cargo Nightly

I am getting the following error when running cargo +nightly install racer:

   Compiling rustc-ap-rustc_data_structures v686.0.0
error[E0107]: wrong number of type arguments: expected 2, found 1
   --> /Users/tobi/.cargo/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_data_structures-686.0.0/src/graph/iterate/mod.rs:256:10
    |
256 |     ) -> ControlFlow<Self::BreakVal> {
    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected 2 type arguments

error[E0107]: wrong number of type arguments: expected 2, found 1
   --> /Users/tobi/.cargo/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_data_structures-686.0.0/src/graph/iterate/mod.rs:261:51
    |
261 |     fn node_settled(&mut self, _node: G::Node) -> ControlFlow<Self::BreakVal> {
    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected 2 type arguments

error[E0107]: wrong number of type arguments: expected 2, found 1
   --> /Users/tobi/.cargo/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_data_structures-686.0.0/src/graph/iterate/mod.rs:284:10
    |
284 |     ) -> ControlFlow<Self::BreakVal> {
    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected 2 type arguments

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0107`.
error: could not compile `rustc-ap-rustc_data_structures`

To learn more, run the command again with --verbose.
warning: build failed, waiting for other jobs to finish...
error: failed to compile `racer v2.1.40`, intermediate artifacts can be found at `/var/folders/sw/jmc9rg0n17v550p30c7_wqmr0000gp/T/cargo-install8jfGll`

Caused by:
  build failed

MacOs:

rustup 1.22.1 (b01adbbc3 2020-07-08)
rustc 1.49.0-nightly (ffa2e7ae8 2020-10-24)
cargo 1.49.0-nightly (dd83ae55c 2020-10-20)

Thanks

About this issue

Original URL
State: closed
Created 4 years ago
Reactions: 19
Comments: 16

Most upvoted comments

If you do rustup update --force (this may mean you don’t get all the components you have already installed) you should get a more up-to-date nightly (say 2020-10-31).

That one should build racer just fine.

This problem seems to be due to rust-ap-rustc_data_structures having been released on a newer rust src than what you have available in your rustup.

+15

nlopes on Nov 1, 2020

stable-x86_64-unknown-linux-gnu unchanged - rustc 1.51.0 (2fd73fabe 2021-03-23) nightly-x86_64-unknown-linux-gnu updated - rustc 1.54.0-nightly (4de757209 2021-05-01) (from rustc 1.53.0-nightly (42816d61e 2021-04-24)) ubuntu 20.04

error[E0658]: unsizing casts to types besides slices are not allowed in const fn
   --> ~/.cargo/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_ast-712.0.0/src/ptr.rs:136:37
    |
136 |                 std::mem::transmute(NonNull::<[T; 0]>::dangling() as NonNull<[T]>)
    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: see issue #64992 <https://github.com/rust-lang/rust/issues/64992> for more information
    = help: add `#![feature(const_fn_unsize)]` to the crate attributes to enable

error: aborting due to previous error

For more information about this error, try `rustc --explain E0658`.
error: could not compile `rustc-ap-rustc_ast`

kiamazi on May 3, 2021