cargo +nightly install racer Error

[setsevireon]

I am trying to install racer, but I keep getting this error.
I tried setting nightly as default, didn't work either.

Info

$ rustup show
Default host: x86_64-unknown-linux-gnu

installed toolchains
--------------------

stable-x86_64-unknown-linux-gnu (default)
nightly-x86_64-unknown-linux-gnu

active toolchain
----------------

stable-x86_64-unknown-linux-gnu (default)
rustc 1.37.0 (eae3437df 2019-08-13)

$ rustup update
info: syncing channel updates for 'stable-x86_64-unknown-linux-gnu'
info: syncing channel updates for 'nightly-x86_64-unknown-linux-gnu'
info: checking for self-updates

   stable-x86_64-unknown-linux-gnu unchanged - rustc 1.37.0 (eae3437df 2019-08-13)
  nightly-x86_64-unknown-linux-gnu unchanged - rustc 1.39.0-nightly (618768492 2019-09-05)

Fail

$ cargo +nightly install racer
    Updating crates.io index
  Installing racer v2.1.25
   Compiling autocfg v0.1.6
   Compiling libc v0.2.62
   Compiling semver-parser v0.7.0
   Compiling arrayvec v0.4.11
   Compiling rand_core v0.4.2
   Compiling nodrop v0.1.13
   Compiling cfg-if v0.1.9
   Compiling proc-macro2 v0.4.30
   Compiling scopeguard v0.3.3
   Compiling memoffset v0.2.1
   Compiling lazy_static v1.4.0
   Compiling stable_deref_trait v1.1.1
   Compiling rustc-rayon-core v0.2.0
   Compiling log v0.4.8
   Compiling proc-macro2 v1.0.2
   Compiling byteorder v1.3.2
   Compiling unicode-xid v0.1.0
   Compiling smallvec v0.6.10
   Compiling syn v0.15.44
   Compiling rustc-rayon v0.2.0
   Compiling unicode-xid v0.2.0
   Compiling either v1.5.2
   Compiling syn v1.0.5
   Compiling indexmap v1.1.0
   Compiling rustc-ap-graphviz v546.0.0
   Compiling memchr v2.2.1
   Compiling bitflags v1.1.0
   Compiling serde v1.0.99
   Compiling ryu v1.0.0
   Compiling rustc-ap-rustc_target v546.0.0
   Compiling scoped-tls v1.0.0
   Compiling unicode-width v0.1.6
   Compiling quick-error v1.2.2
   Compiling termcolor v1.0.5
   Compiling annotate-snippets v0.6.1
   Compiling itoa v0.4.4
   Compiling rustc-ap-syntax v546.0.0
   Compiling regex-syntax v0.6.12
   Compiling vec_map v0.8.1
   Compiling strsim v0.8.0
   Compiling rustc-ap-rustc_lexer v546.0.0
error[E0433]: failed to resolve: could not find `property` in `unicode`
   --> /home/marx/.cargo/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_lexer-546.0.0/src/lib.rs:672:24
    |
672 |         core::unicode::property::Pattern_White_Space(c)
    |                        ^^^^^^^^ could not find `property` in `unicode`

error[E0599]: no method named `is_xid_start` found for type `char` in the current scope
   --> /home/marx/.cargo/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_lexer-546.0.0/src/lib.rs:689:33
    |
689 |             || (c > '\x7f' && c.is_xid_start())
    |                                 ^^^^^^^^^^^^

error[E0599]: no method named `is_xid_continue` found for type `char` in the current scope
   --> /home/marx/.cargo/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_lexer-546.0.0/src/lib.rs:708:33
    |
708 |             || (c > '\x7f' && c.is_xid_continue())
    |                                 ^^^^^^^^^^^^^^^

error: aborting due to 3 previous errors

Some errors have detailed explanations: E0433, E0599.
For more information about an error, try `rustc --explain E0433`.
error: Could not compile `rustc-ap-rustc_lexer`.
warning: build failed, waiting for other jobs to finish...
error: failed to compile `racer v2.1.25`, intermediate artifacts can be found at `/tmp/cargo-installsc6zOC`

Caused by:
  build failed

[fvnilo]

I am having exactly the same issue despite this issue being closed.

[kngwyu]

🤔
@nylo-andry
I cannot reproduce.
What's your compiler version?

[fvnilo]

@kngwyu

Here are my outputs:

Info

$ rustup show                                                                                                                                              [2019-09-06 23:46:05]
Default host: x86_64-apple-darwin

installed toolchains
--------------------

stable-x86_64-apple-darwin (default)
nightly-x86_64-apple-darwin

active toolchain
----------------

stable-x86_64-apple-darwin (default)
rustc 1.37.0 (eae3437df 2019-08-13)

$ rustup update                                                                                                                                            [2019-09-06 23:48:44]
info: syncing channel updates for 'stable-x86_64-apple-darwin'
info: syncing channel updates for 'nightly-x86_64-apple-darwin'
info: checking for self-updates

   stable-x86_64-apple-darwin unchanged - rustc 1.37.0 (eae3437df 2019-08-13)
  nightly-x86_64-apple-darwin unchanged - rustc 1.39.0-nightly (6e19f3f38 2019-09-06)

Fail

$ cargo +nightly install racer                                                                                                                               
  Updating crates.io index
  Installing racer v2.1.25
   Compiling autocfg v0.1.6
   Compiling arrayvec v0.4.11
   Compiling libc v0.2.62
   Compiling semver-parser v0.7.0
   Compiling rand_core v0.4.2
   Compiling nodrop v0.1.13
   Compiling cfg-if v0.1.9
   Compiling scopeguard v0.3.3
   Compiling memoffset v0.2.1
   Compiling proc-macro2 v0.4.30
   Compiling lazy_static v1.4.0
   Compiling unicode-xid v0.1.0
   Compiling proc-macro2 v1.0.3
   Compiling byteorder v1.3.2
   Compiling stable_deref_trait v1.1.1
   Compiling log v0.4.8
   Compiling rustc-rayon-core v0.2.0
   Compiling smallvec v0.6.10
   Compiling unicode-xid v0.2.0
   Compiling syn v0.15.44
   Compiling rustc-rayon v0.2.0
   Compiling either v1.5.2
   Compiling syn v1.0.5
   Compiling indexmap v1.1.0
   Compiling memchr v2.2.1
   Compiling rustc-ap-graphviz v546.0.0
   Compiling bitflags v1.1.0
   Compiling serde v1.0.99
   Compiling ryu v1.0.0
   Compiling rustc-ap-rustc_target v546.0.0
   Compiling unicode-width v0.1.6
   Compiling scoped-tls v1.0.0
   Compiling quick-error v1.2.2
   Compiling itoa v0.4.4
   Compiling annotate-snippets v0.6.1
   Compiling rustc-ap-syntax v546.0.0
   Compiling termcolor v1.0.5
   Compiling regex-syntax v0.6.12
   Compiling rustc-ap-rustc_lexer v546.0.0
error[E0433]: failed to resolve: could not find `property` in `unicode`
   --> /Users/fanilo/.cargo/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_lexer-546.0.0/src/lib.rs:672:24
    |
672 |         core::unicode::property::Pattern_White_Space(c)
    |                        ^^^^^^^^ could not find `property` in `unicode`

error[E0599]: no method named `is_xid_start` found for type `char` in the current scope
   --> /Users/fanilo/.cargo/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_lexer-546.0.0/src/lib.rs:689:33
    |
689 |             || (c > '\x7f' && c.is_xid_start())
    |                                 ^^^^^^^^^^^^

error[E0599]: no method named `is_xid_continue` found for type `char` in the current scope
   --> /Users/fanilo/.cargo/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_lexer-546.0.0/src/lib.rs:708:33
    |
708 |             || (c > '\x7f' && c.is_xid_continue())
    |                                 ^^^^^^^^^^^^^^^

error: aborting due to 3 previous errors

Some errors have detailed explanations: E0433, E0599.
For more information about an error, try `rustc --explain E0433`.
error: Could not compile `rustc-ap-rustc_lexer`.
warning: build failed, waiting for other jobs to finish...
error: failed to compile `racer v2.1.25`, intermediate artifacts can be found at `/var/folders/y9/kn5ybk3s1c3_65bhm833r5fc0000gp/T/cargo-install9fyILG`

Caused by:
  build failed

[kngwyu]

Ah, I understand.
The fix is not published and you have to use cargo install --git https://github.com/racer-rust/racer.git to install the latest version.

[fvnilo]

@kngwyu Right! Thank you that works!

[jingyuexing]

cargo install racer
Updating crates.io index
Downloaded racer v2.1.37
Downloaded 1 crate (186.4 KB) in 5.38s
Installing racer v2.1.37
Downloaded annotate-snippets v0.8.0
Downloaded block-buffer v0.7.3
Downloaded derive_more v0.99.9
Downloaded fake-simd v0.1.2
Downloaded jobserver v0.1.21
Downloaded memmap v0.7.0
Downloaded parking_lot_core v0.7.2
Downloaded rustc-ap-rustc_ast_pretty v671.0.0
Downloaded rls-span v0.5.2
Downloaded byte-tools v0.3.1
Downloaded rustc-ap-rustc_fs_util v671.0.0
Downloaded rustc-ap-rustc_parse v671.0.0
Downloaded rustc-ap-rustc_span v671.0.0
Downloaded arrayvec v0.5.1
Downloaded termize v0.1.1
Downloaded generic-array v0.12.3
Downloaded md-5 v0.8.0
Downloaded parking_lot v0.10.2
Downloaded rustc-ap-rustc_arena v671.0.0
Downloaded rustc-ap-rustc_feature v671.0.0
Downloaded rustc-ap-rustc_macros v671.0.0
Downloaded crossbeam-utils v0.6.6
Downloaded rustc-hash v1.1.0
Downloaded crossbeam-queue v0.1.2
Downloaded getopts v0.2.21
Downloaded once_cell v1.4.0
Downloaded racer-interner v0.1.0
Downloaded rustc-ap-rustc_graphviz v671.0.0
Downloaded rustc-ap-rustc_session v671.0.0
Downloaded scoped-tls v1.0.0
Downloaded sha-1 v0.8.2
Downloaded stacker v0.1.10
Downloaded opaque-debug v0.2.3
Downloaded rustc-ap-rustc_data_structures v671.0.0
Downloaded ena v0.14.0
Downloaded rustc-rayon-core v0.3.0
Downloaded humantime v2.0.1
Downloaded psm v0.1.11
Downloaded rustc-ap-rustc_lexer v671.0.0
Downloaded block-padding v0.1.5
Downloaded measureme v0.7.1
Downloaded rustc-ap-rustc_index v671.0.0
Downloaded digest v0.8.1
Downloaded rustc-ap-rustc_ast v671.0.0
Downloaded typenum v1.12.0
Downloaded rustc-ap-rustc_errors v671.0.0
Downloaded lazycell v1.3.0
Downloaded racer-cargo-metadata v0.1.1
Downloaded rustc-ap-rustc_target v671.0.0
Downloaded rustc-rayon v0.3.0
Downloaded rustc-ap-rustc_serialize v671.0.0
Downloaded env_logger v0.7.1
Downloaded 52 crates (1.5 MB) in 36.29s
Compiling autocfg v1.0.0
Compiling cfg-if v0.1.10
Compiling winapi v0.3.9
Compiling unicode-xid v0.2.1
Compiling proc-macro2 v1.0.19
Compiling lazy_static v1.4.0
Compiling maybe-uninit v2.0.0
Compiling semver-parser v0.7.0
Compiling scopeguard v1.1.0
Compiling syn v1.0.38
Compiling byteorder v1.3.4
Compiling libc v0.2.74
Compiling cc v1.0.58
Compiling smallvec v1.4.2
error[E0554]: #![feature] may not be used on the stable release channel
--> C:\Users\Jingyuexing.cargo\registry\src\github.com-1ecc6299db9ec823\smallvec-1.4.2\src\lib.rs:74:32
|
74 | #![cfg_attr(feature = "union", feature(untagged_unions))]
| ^^^^^^^^^^^^^^^^^^^^^^^^

error[E0554]: #![feature] may not be used on the stable release channel
--> C:\Users\Jingyuexing.cargo\registry\src\github.com-1ecc6299db9ec823\smallvec-1.4.2\src\lib.rs:77:37
|
77 | #![cfg_attr(feature = "may_dangle", feature(dropck_eyepatch))]
| ^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 2 previous errors

For more information about this error, try rustc --explain E0554.
error: could not compile smallvec.

To learn more, run the command again with --verbose.
warning: build failed, waiting for other jobs to finish...
error: failed to compile racer v2.1.37, intermediate artifacts can be found at C:\Users\JINGYU~1\AppData\Local\Temp\cargo-installN7ff7t

Caused by:
build failed

[ThoenigAdrian]

@kngwyu I think this command you posted might now be out of date

    cargo install --git https://github.com/racer-rust/racer.git

as this fails with:

C:\Users\user\.rustup\toolchains\nightly-x86_64-pc-windows-msvc>cargo.exe install --git https://github.com/racer-rust/racer.git
    Updating git repository `https://github.com/racer-rust/racer.git`
error: multiple packages with binaries found: racer, test-crate3

I could get rid of this error by using, this command instead:

C:\Users\user\.rustup\toolchains\nightly-x86_64-pc-windows-msvc>cargo.exe install --git https://github.com/racer-rust/racer.git racer

note the additional racer at the end.

But even after adjusting for this, i get the same installation error as @jingyuexing .
I think this error message makes no sense as I am explictily using the nigthly version . Which can be seen by the path nightly-x86_64-pc-windows-msvc .

But still it fails with :

error[E0554]: `#![feature]` may not be used on the stable release channel