Merge branch 'master' into add-doc-auto-cfg

Author: umgefahren

Cargo.toml

@@ -36,5 +36,6 @@ serde_json = "1.0"
 # More information: https://docs.rs/about/builds#cross-compiling
 [package.metadata.docs.rs]
 all-features = true
-rustdoc-args = ["--cfg", "docsrs"]
-rustc-args = ["--cfg", "docsrs"]
+
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(nightly)'] }