Add the docsrs autocfg attr to all crates

This also adds it to generated crates, and adds an autofix+lint to manage these attributes.

CHANGELOG.next.toml

@@ -79,3 +79,15 @@ message = "Expose local socket address from ConnectionMetadata."
 references = ["aws-sdk-rust#990"]
 meta = { "breaking" = false, "tada" = false, "bug" = false, "target" = "client" }
 author = "declanvk"
+
+[[smithy-rs]]
+message = "All generated docs now include docsrs labels when features are required"
+references = ["smithy-rs#3121", "smithy-rs#3295"]
+meta = { "breaking" = false, "tada" = true, "bug" = false, "target" = "all" }
+author = "rcoh"
+
+[[aws-sdk-rust]]
+message = "All generated docs now include docsrs labels when features are required"
+references = ["smithy-rs#3121", "smithy-rs#3295"]
+meta = { "breaking" = false, "tada" = true, "bug" = false }
+author = "rcoh"

aws/rust-runtime/aws-config/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 #![allow(clippy::derive_partial_eq_without_eq)]
 #![warn(
     missing_debug_implementations,
@@ -11,7 +14,6 @@
     rustdoc::missing_crate_level_docs,
     unreachable_pub
 )]
-#![cfg_attr(docsrs, feature(doc_auto_cfg))]
 
 //! `aws-config` provides implementations of region and credential resolution.
 //!

aws/rust-runtime/aws-credential-types/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 //! `aws-credential-types` provides types concerned with AWS SDK credentials including:
 //! * Traits for credentials providers and for credentials caching
 //! * An opaque struct representing credentials

aws/rust-runtime/aws-endpoint/src/lib.rs

@@ -3,4 +3,7 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 //! This crate is no longer used by the AWS SDK and is deprecated.

aws/rust-runtime/aws-http/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 //! AWS-specific middleware implementations and HTTP-related features.
 
 #![allow(clippy::derive_partial_eq_without_eq)]

aws/rust-runtime/aws-hyper/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 #![deprecated(
     since = "0.3.0",
     note = "The functionality of this crate is included in individual AWS services."

aws/rust-runtime/aws-inlineable/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 //! Collection of modules that get conditionally included directly into the code generated
 //! SDK service crates. For example, when generating S3, the `s3_errors` module will get copied
 //! into the generated S3 crate to support the code generator.

aws/rust-runtime/aws-runtime-api/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 //! Runtime support code for the AWS SDK. This crate isn't intended to be used directly.
 
 #![warn(

aws/rust-runtime/aws-runtime/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 //! Runtime support code for the AWS SDK. This crate isn't intended to be used directly.
 
 #![warn(

aws/rust-runtime/aws-sig-auth/src/lib.rs

@@ -3,4 +3,7 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 //! This crate is no longer used by the AWS SDK and is deprecated.

aws/rust-runtime/aws-sigv4/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 //! Provides functions for calculating Sigv4 signing keys, signatures, and
 //! optional utilities for signing HTTP requests and Event Stream messages.
 

aws/rust-runtime/aws-types/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 //! Cross-service types for the AWS SDK.
 
 #![allow(clippy::derive_partial_eq_without_eq)]

codegen-core/src/main/kotlin/software/amazon/smithy/rust/codegen/core/smithy/generators/LibRsGenerator.kt

@@ -12,6 +12,7 @@ import software.amazon.smithy.rust.codegen.core.rustlang.Writable
 import software.amazon.smithy.rust.codegen.core.rustlang.containerDocs
 import software.amazon.smithy.rust.codegen.core.rustlang.escape
 import software.amazon.smithy.rust.codegen.core.rustlang.isNotEmpty
+import software.amazon.smithy.rust.codegen.core.rustlang.rawRust
 import software.amazon.smithy.rust.codegen.core.rustlang.rust
 import software.amazon.smithy.rust.codegen.core.smithy.CoreRustSettings
 import software.amazon.smithy.rust.codegen.core.smithy.customize.NamedCustomization
@@ -50,6 +51,7 @@ class LibRsGenerator(
             if (requireDocs) {
                 rust("##![warn(missing_docs)]")
             }
+            rawRust("#![cfg_attr(docsrs, feature(doc_auto_cfg))]")
 
             // Allow for overriding the default service docs via customization
             val defaultServiceDocs = settings.getService(model).getTrait<DocumentationTrait>()?.value

rust-runtime/aws-smithy-async/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 #![allow(clippy::derive_partial_eq_without_eq)]
 #![warn(
     missing_docs,

rust-runtime/aws-smithy-checksums/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 #![allow(clippy::derive_partial_eq_without_eq)]
 #![warn(
     // missing_docs,

rust-runtime/aws-smithy-client/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 //! This crate is no longer used by smithy-rs and is deprecated.
 
 #![warn(

rust-runtime/aws-smithy-eventstream/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 #![allow(clippy::derive_partial_eq_without_eq)]
 #![warn(
     // missing_docs,

rust-runtime/aws-smithy-http-auth/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 #![warn(
     missing_docs,
     rustdoc::missing_crate_level_docs,

rust-runtime/aws-smithy-http-server-python/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 #![allow(clippy::derive_partial_eq_without_eq)]
 #![cfg_attr(docsrs, feature(doc_cfg))]
 

rust-runtime/aws-smithy-http-server-typescript/src/lib.rs

@@ -2,3 +2,7 @@
  * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
  * SPDX-License-Identifier: Apache-2.0
  */
+
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */

rust-runtime/aws-smithy-http-server/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 #![allow(clippy::derive_partial_eq_without_eq)]
 #![cfg_attr(docsrs, feature(doc_cfg))]
 

rust-runtime/aws-smithy-http-tower/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 //! This crate is no longer used by smithy-rs and is deprecated.
 
 #![warn(

rust-runtime/aws-smithy-http/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 #![warn(
     missing_docs,
     rustdoc::missing_crate_level_docs,

rust-runtime/aws-smithy-json/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 #![allow(clippy::derive_partial_eq_without_eq)]
 #![warn(
     // missing_docs,

rust-runtime/aws-smithy-protocol-test/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 #![warn(
     // missing_docs,
     // rustdoc::missing_crate_level_docs,

rust-runtime/aws-smithy-query/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 #![allow(clippy::derive_partial_eq_without_eq)]
 #![warn(
     // missing_docs,

rust-runtime/aws-smithy-runtime-api/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 #![warn(
     missing_docs,
     rustdoc::missing_crate_level_docs,

rust-runtime/aws-smithy-runtime/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 //! Runtime support logic and types for smithy-rs generated code.
 //!
 //! # Crate Features
@@ -17,7 +20,6 @@
     unreachable_pub,
     rust_2018_idioms
 )]
-#![cfg_attr(docsrs, feature(doc_auto_cfg))]
 
 /// Runtime support logic for generated clients.
 #[cfg(feature = "client")]

rust-runtime/aws-smithy-types-convert/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 //! Conversions between `aws-smithy-types` and the types of frequently used Rust libraries.
 
 #![allow(clippy::derive_partial_eq_without_eq)]

rust-runtime/aws-smithy-types/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 //! Protocol-agnostic types for smithy-rs.
 
 #![allow(clippy::derive_partial_eq_without_eq)]
@@ -13,7 +16,7 @@
     rust_2018_idioms,
     unreachable_pub
 )]
-#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+
 pub mod base64;
 pub mod body;
 pub mod byte_stream;

rust-runtime/aws-smithy-xml/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 #![allow(clippy::derive_partial_eq_without_eq)]
 #![warn(
     // missing_docs,

rust-runtime/inlineable/src/lib.rs

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/* Automatically managed default lints */
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+/* End of automatically managed default lints */
 #[allow(dead_code)]
 mod aws_query_compatible_errors;
 #[allow(unused)]