Merge pull request #173 from Metaswitch/nightly-docs

Fix doc build breakage on stable

Author: richardwhiuk

Cargo.toml

@@ -75,3 +75,4 @@ hyper = { version = "0.14", features = ["client", "http1", "tcp"] }
 [package.metadata.docs.rs]
 # Enable all features, pending https://github.com/rust-lang/rust/issues/43781 being resolved.
 all-features = true
+rustdoc-args = ["--cfg", "docsrs"]

src/lib.rs

@@ -37,7 +37,7 @@
 )]
 // Enable doc_auto_cfg, but only on doc builds
 // See https://github.com/rust-lang/rust/issues/43781 for details
-#![cfg_attr(doc, feature(doc_auto_cfg))]
+#![cfg_attr(docsrs, feature(doc_auto_cfg, doc_cfg))]
 
 use std::error;
 use std::fmt;