rust-cssparser doesn't compile anymore, complaining about `syn::Token!`

[Eijebong]

The latest nightly doesn't compiler cssparser. The error message is the following:

error[E0433]: failed to resolve: unresolved import
  --> build/match_byte.rs:48:31
   |
48 |                 input.parse::<syn::Token![,]>()?;
   |                               ^^^^^^^^^^^^^^
   |                               |
   |                               unresolved import
   |                               help: a similar path exists: `syn::token`
   |
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: aborting due to previous error

For more information about this error, try `rustc --explain E0433`.
error: Could not compile `cssparser`.

To learn more, run the command again with --verbose.

The macro does exist

I've seen this issue in serde_derive too (and I've been told it happens in phf)

[VictorKoenders]

cargo 1.38.0-nightly (677a180f4 2019-07-08)
release: 1.38.0
commit-hash: 677a180f4c8ca1dcef594f68dd0e63e4f08621f5
commit-date: 2019-07-08

rustc 1.38.0-nightly (cd2cd4c96 2019-07-10)
binary: rustc
commit-hash: cd2cd4c9627e52c33e68e8c93a8916dc11094cbb
commit-date: 2019-07-10
host: x86_64-unknown-linux-gnu
release: 1.38.0-nightly
LLVM version: 8.0

Cargo.toml

[package]
name = "test_"
version = "0.1.0"
authors = ["Trangar <victor.koenders@gmail.com>"]
edition = "2018"

[dependencies]
phf = { version = "0.7", features = ["macros"] }

Main.rs

fn main() {}

Output

``` Compiling phf_macros v0.7.24 error[E0433]: failed to resolve: maybe a missing `extern crate token;`? --> /home/trangar/.cargo/registry/src/github.com-1ecc6299db9ec823/phf_macros-0.7.24/src/lib.rs:146:23 | 146 | input.parse::]>()?; | ^^^^^^^^^^ maybe a missing `extern crate token;`? | = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0433]: failed to resolve: maybe a missing extern crate token;?
--> /home/trangar/.cargo/registry/src/github.com-1ecc6299db9ec823/phf_macros-0.7.24/src/lib.rs:156:42
|
156 | let parsed = Punctuated::<Entry, Token![,]>::parse_terminated(input)?;
| ^^^^^^^^^ maybe a missing extern crate token;?
|
= note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0433]: failed to resolve: maybe a missing extern crate token;?
--> /home/trangar/.cargo/registry/src/github.com-1ecc6299db9ec823/phf_macros-0.7.24/src/lib.rs:167:40
|
167 | let parsed = Punctuated::<Key, Token![,]>::parse_terminated(input)?;
| ^^^^^^^^^ maybe a missing extern crate token;?
|
= note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0277]: the size for values of type [Entry] cannot be known at compilation time
--> /home/trangar/.cargo/registry/src/github.com-1ecc6299db9ec823/phf_macros-0.7.24/src/lib.rs:157:13
|
157 | let map = parsed.into_iter().collect::<Vec<_>>();
| ^^^ doesn't have a size known at compile-time
|
= help: the trait std::marker::Sized is not implemented for [Entry]
= note: to learn more, visit https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait
= note: all local variables must have a statically known size
= help: unsized locals are gated as an unstable feature

error[E0308]: mismatched types
--> /home/trangar/.cargo/registry/src/github.com-1ecc6299db9ec823/phf_macros-0.7.24/src/lib.rs:159:16
|
159 | Ok(Map(map))
| ^^^
| |
| expected struct std::vec::Vec, found slice
| help: try using a conversion method: map.to_vec()
|
= note: expected type std::vec::Vec<Entry>
found type [Entry]

error[E0277]: the size for values of type [Entry] cannot be known at compilation time
--> /home/trangar/.cargo/registry/src/github.com-1ecc6299db9ec823/phf_macros-0.7.24/src/lib.rs:168:13
|
168 | let set = parsed
| ^^^ doesn't have a size known at compile-time
|
= help: the trait std::marker::Sized is not implemented for [Entry]
= note: to learn more, visit https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait
= note: all local variables must have a statically known size
= help: unsized locals are gated as an unstable feature

error[E0308]: mismatched types
--> /home/trangar/.cargo/registry/src/github.com-1ecc6299db9ec823/phf_macros-0.7.24/src/lib.rs:176:16
|
176 | Ok(Set(set))
| ^^^
| |
| expected struct std::vec::Vec, found slice
| help: try using a conversion method: set.to_vec()
|
= note: expected type std::vec::Vec<Entry>
found type [Entry]

error: aborting due to 7 previous errors

Some errors have detailed explanations: E0277, E0308, E0433.
For more information about an error, try rustc --explain E0277.
error: Could not compile phf_macros.

To learn more, run the command again with --verbose.

</details>

[tesuji]

Duplicate of #62562. Should be fixed by tomorrow nightly.

[Eijebong]

Oh, thanks. For some reasons I couldn't find any issue with that. I'll close this :)