Liballoc was updated to 2018 edition

Building without edition=2018 does no longer work on latest nightly.

Author: phil-opp

CHANGELOG.md

@@ -5,6 +5,9 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+## [v0.5.4] - 2019-02-04
+- Fix build on latest nightly: `liballoc` was updated to Rust 2018
+
 ## [v0.5.4] - 2019-01-17
 - Don't fail when the `lib` or `bin` directories don't exist; only emit a warning
 
@@ -376,7 +379,8 @@ stage = 1
 
 - Initial release
 
-[Unreleased]: https://github.com/rust-osdev/cargo-xbuild/compare/v0.5.4...HEAD
+[Unreleased]: https://github.com/rust-osdev/cargo-xbuild/compare/v0.5.5...HEAD
+[v0.5.5]: https://github.com/rust-osdev/cargo-xbuild/compare/v0.5.4...v0.5.5
 [v0.5.4]: https://github.com/rust-osdev/cargo-xbuild/compare/v0.5.3...v0.5.4
 [v0.5.3]: https://github.com/rust-osdev/cargo-xbuild/compare/v0.5.2...v0.5.3
 [v0.5.2]: https://github.com/rust-osdev/cargo-xbuild/compare/v0.5.1...v0.5.2

src/sysroot.rs

@@ -143,6 +143,7 @@ fn build_liballoc(
 authors = ["The Rust Project Developers"]
 name = "alloc"
 version = "0.0.0"
+edition = "2018"
 
 [dependencies.compiler_builtins]
 version = "0.1.0"