Update cargo-config2 to 0.1.29

Author: taiki-e

CHANGELOG.md

@@ -10,6 +10,8 @@ Note: In this file, do not use the hard wrap in the middle of a sentence for com
 
 ## [Unreleased]
 
+- Respect `target.<triple>.rustdocflags` [that added in Cargo 1.78](https://github.com/rust-lang/cargo/pull/13197).
+
 ## [0.6.11] - 2024-07-18
 
 - Add support for MC/DC coverage. ([#363](https://github.com/taiki-e/cargo-llvm-cov/pull/363), thanks @aytey)

Cargo.toml

@@ -24,7 +24,7 @@ pkg-fmt = "tgz"
 [dependencies]
 anyhow = "1.0.47"
 camino = "1.0.5"
-cargo-config2 = "0.1.21"
+cargo-config2 = "0.1.29"
 duct = "0.13.1"
 fs-err = "2.5"
 glob = "0.3"

src/main.rs

@@ -269,7 +269,7 @@ fn set_env(cx: &Context, env: &mut dyn EnvTarget, IsNextest(is_nextest): IsNexte
     }
 
     // https://doc.rust-lang.org/nightly/rustc/instrument-coverage.html#including-doc-tests
-    let rustdocflags = &mut cx.ws.config.build.rustdocflags.clone();
+    let rustdocflags = &mut cx.ws.config.rustdocflags(&cx.ws.target_for_config)?.unwrap_or_default();
     if cx.args.doctests {
         let rustdocflags = rustdocflags.get_or_insert_with(Flags::default);
         push_common_flags(cx, rustdocflags);