Fixed build on latest nightly.

Arnavion · Arnavion · commit c4515c0c0046 · 2018-07-17T10:27:36.000-07:00
rust-lang/rust#52081 updated the name of the main feature required for proc-macro-related sub features.
diff --git a/factorio-mods-common/src/lib.rs b/factorio-mods-common/src/lib.rs
@@ -1,7 +1,7 @@
 //! Common types and functionality used by the other factorio-mods crates.
 
 #![deny(missing_docs)]
-#![feature(proc_macro, proc_macro_path_invoc)]
+#![feature(proc_macro_path_invoc, use_extern_macros)]
 
 #![cfg_attr(feature = "cargo-clippy", deny(clippy, clippy_pedantic))]
 #![cfg_attr(feature = "cargo-clippy", allow(
diff --git a/factorio-mods-local/src/lib.rs b/factorio-mods-local/src/lib.rs
@@ -1,7 +1,7 @@
 //! API to interface with the local Factorio installation.
 
 #![deny(missing_docs)]
-#![feature(generators, generator_trait, proc_macro, proc_macro_path_invoc)]
+#![feature(generators, generator_trait, proc_macro_path_invoc, use_extern_macros)]
 
 #![cfg_attr(feature = "cargo-clippy", deny(clippy, clippy_pedantic))]
 #![cfg_attr(feature = "cargo-clippy", allow(
diff --git a/factorio-mods-web/src/lib.rs b/factorio-mods-web/src/lib.rs
@@ -1,7 +1,7 @@
 //! API to interface with <https://mods.factorio.com/>
 
 #![deny(missing_docs)]
-#![feature(catch_expr, generators, generator_trait, proc_macro, proc_macro_non_items, proc_macro_path_invoc)]
+#![feature(catch_expr, generators, generator_trait, proc_macro_non_items, proc_macro_path_invoc, use_extern_macros)]
 
 #![cfg_attr(feature = "cargo-clippy", deny(clippy, clippy_pedantic))]
 #![cfg_attr(feature = "cargo-clippy", allow(
diff --git a/package/src/lib.rs b/package/src/lib.rs
@@ -1,6 +1,6 @@
 //! Solves the given set of packages and requirements to produce a solution of packages to be installed.
 
-#![feature(proc_macro, proc_macro_path_invoc)]
+#![feature(proc_macro_path_invoc, use_extern_macros)]
 
 #![cfg_attr(feature = "cargo-clippy", deny(clippy, clippy_pedantic))]
 #![cfg_attr(feature = "cargo-clippy", allow(
diff --git a/src/main.rs b/src/main.rs
@@ -1,6 +1,6 @@
 //! A CLI tool to manage Factorio mods.
 
-#![feature(catch_expr, exhaustive_patterns, generators, never_type, nll, proc_macro, proc_macro_non_items, proc_macro_path_invoc)]
+#![feature(catch_expr, exhaustive_patterns, generators, never_type, nll, proc_macro_non_items, proc_macro_path_invoc, use_extern_macros)]
 
 #![cfg_attr(feature = "cargo-clippy", deny(clippy, clippy_pedantic))]
 #![cfg_attr(feature = "cargo-clippy", allow(
