fix: enable doc_cfg feature for docsrs (#2294)

ethers-addressbook/src/lib.rs

@@ -1,5 +1,6 @@
 #![doc = include_str!("../README.md")]
 #![deny(unsafe_code, rustdoc::broken_intra_doc_links)]
+#![cfg_attr(docsrs, feature(doc_cfg))]
 
 pub use ethers_core::types::{Address, Chain};
 

ethers-contract/ethers-contract-abigen/src/lib.rs

@@ -9,6 +9,7 @@
 
 #![deny(rustdoc::broken_intra_doc_links, missing_docs, unsafe_code)]
 #![warn(unreachable_pub)]
+#![cfg_attr(docsrs, feature(doc_cfg))]
 
 #[cfg(test)]
 #[allow(missing_docs)]

ethers-contract/ethers-contract-derive/src/lib.rs

@@ -2,6 +2,7 @@
 
 #![deny(missing_docs, unsafe_code, unused_crate_dependencies)]
 #![deny(rustdoc::broken_intra_doc_links)]
+#![cfg_attr(docsrs, feature(doc_cfg))]
 
 use abigen::Contracts;
 use proc_macro::TokenStream;

ethers-contract/src/lib.rs

@@ -2,6 +2,7 @@
 #![doc = include_str!("../README.md")]
 #![deny(unsafe_code)]
 #![warn(missing_docs)]
+#![cfg_attr(docsrs, feature(doc_cfg))]
 
 #[path = "contract.rs"]
 mod _contract;

ethers-core/src/lib.rs

@@ -2,6 +2,7 @@
 #![doc = include_str!("../README.md")]
 #![deny(rustdoc::broken_intra_doc_links)]
 #![cfg_attr(not(target_arch = "wasm32"), deny(unused_crate_dependencies))]
+#![cfg_attr(docsrs, feature(doc_cfg))]
 
 pub mod types;
 

ethers-etherscan/src/lib.rs

@@ -1,5 +1,6 @@
 #![doc = include_str!("../README.md")]
 #![deny(unsafe_code, rustdoc::broken_intra_doc_links)]
+#![cfg_attr(docsrs, feature(doc_cfg))]
 
 use crate::errors::{is_blocked_by_cloudflare_response, is_cloudflare_security_challenge};
 use contract::ContractMetadata;

ethers-middleware/src/lib.rs

@@ -1,5 +1,6 @@
 #![doc = include_str!("../README.md")]
 #![deny(unsafe_code, rustdoc::broken_intra_doc_links)]
+#![cfg_attr(docsrs, feature(doc_cfg))]
 
 /// The [Gas Escalator middleware](crate::gas_escalator::GasEscalatorMiddleware)
 /// is used to re-broadcast transactions with an increasing gas price to guarantee

ethers-providers/src/lib.rs

@@ -1,8 +1,8 @@
 #![doc = include_str!("../README.md")]
-#![cfg_attr(docsrs, feature(doc_cfg))]
 #![allow(clippy::type_complexity)]
 #![warn(missing_docs)]
 #![deny(unsafe_code, rustdoc::broken_intra_doc_links)]
+#![cfg_attr(docsrs, feature(doc_cfg))]
 
 mod ext;
 pub use ext::*;

ethers-signers/src/lib.rs

@@ -1,5 +1,6 @@
 #![doc = include_str!("../README.md")]
 #![deny(unsafe_code, rustdoc::broken_intra_doc_links)]
+#![cfg_attr(docsrs, feature(doc_cfg))]
 
 mod wallet;
 pub use wallet::{MnemonicBuilder, Wallet, WalletError};

ethers-solc/src/lib.rs

@@ -1,5 +1,6 @@
 #![doc = include_str!("../README.md")]
 #![deny(rustdoc::broken_intra_doc_links)]
+#![cfg_attr(docsrs, feature(doc_cfg))]
 
 pub mod artifacts;
 pub mod sourcemap;

ethers/src/lib.rs

@@ -81,6 +81,7 @@
 
 #![warn(missing_debug_implementations, missing_docs, rust_2018_idioms, unreachable_pub)]
 #![deny(rustdoc::broken_intra_doc_links)]
+#![cfg_attr(docsrs, feature(doc_cfg))]
 #![doc(test(no_crate_inject, attr(deny(rust_2018_idioms), allow(dead_code, unused_variables))))]
 
 #[doc(inline)]