v0.3.4 fails to build with latest nightly

[matthiaskrgr]

rustc 1.25.0-nightly (3f92e8d89 2018-01-14)
cargo 0.25.0-nightly (a88fbace4 2017-12-29)

    Updating registry `https://github.com/rust-lang/crates.io-index`
  Installing rustfmt-nightly v0.3.4
   Compiling getopts v0.2.15
   Compiling regex-syntax v0.4.2
   Compiling rustc-demangle v0.1.5
   Compiling cfg-if v0.1.2
   Compiling term v0.4.6
   Compiling serde v1.0.27
   Compiling semver-parser v0.7.0
   Compiling itoa v0.3.4
   Compiling utf8-ranges v1.0.0
   Compiling num-traits v0.1.41
   Compiling cc v1.0.4
   Compiling dtoa v0.4.2
   Compiling quote v0.3.15
   Compiling unicode-segmentation v1.2.0
   Compiling unicode-xid v0.0.4
   Compiling diff v0.1.11
   Compiling void v1.0.2
   Compiling rustfmt-nightly v0.3.4
   Compiling lazy_static v1.0.0
   Compiling libc v0.2.36
   Compiling log v0.4.1
   Compiling semver v0.8.0
   Compiling toml v0.4.5
   Compiling serde_json v1.0.9
   Compiling unreachable v1.0.0
   Compiling synom v0.11.3
   Compiling backtrace-sys v0.1.16
   Compiling memchr v2.0.1
   Compiling log v0.3.9
   Compiling thread_local v0.3.5
   Compiling syn v0.11.11
   Compiling aho-corasick v0.6.4
   Compiling regex v0.2.5
   Compiling backtrace v0.3.5
   Compiling error-chain v0.11.0
   Compiling env_logger v0.4.3
   Compiling serde_derive_internals v0.19.0
   Compiling derive-new v0.5.0
   Compiling serde_derive v1.0.27
   Compiling cargo_metadata v0.4.1
error[E0599]: no variant named `AutoImpl` found for type `syntax::ast::ItemKind` in the current scope
   --> src/visitor.rs:413:13
    |
413 |             ast::ItemKind::AutoImpl(..) => {
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ variant not found in `syntax::ast::ItemKind`

error: aborting due to previous error

error: failed to compile `rustfmt-nightly v0.3.4`, intermediate artifacts can be found at `/tmp/cargo-install.ErWlQh8PEJgz`

Caused by:
  Could not compile `rustfmt-nightly`.

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

Building from the repo @ 74a957e works however.

[topecongiro]

Recently we switched to rustc-ap-syntax crate over libsyntax tied with rustc, so the latest master is not affected by the breaking change to libsyntax. 0.3.4 still uses libsyntax tied with rustc, hence the build failure.

[topecongiro]

cc rust-lang/rust#47416.

[topecongiro]

Unfortunately, the latest rustc-ap-syntax (11.0.0) does not include the relevant commits, so we must wait until 12.0.0 gets published. It will be published within 24 hours.

[topecongiro]

Published 0.3.5.