Auto merge of #106621 - ozkanonur:enable-elided-lifetimes-for-doctests, r=Mark-Simulacrum

enable `rust_2018_idioms` lint group for doctests

With this change, `rust_2018_idioms` lint group will be enabled for compiler/libstd doctests.

Resolves #106086
Resolves #99144

Signed-off-by: ozkanonur <work@onurozkan.dev>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/bootstrap/compile.rs b/src/bootstrap/compile.rs
index 966ae00fa1d..33addb90da3 100644
--- a/src/bootstrap/compile.rs
+++ b/src/bootstrap/compile.rs
@@ -412,6 +412,8 @@ pub fn std_cargo(builder: &Builder<'_>, target: TargetSelection, stage: u32, car
         format!("-Zcrate-attr=doc(html_root_url=\"{}/\")", builder.doc_rust_lang_org_channel(),);
     cargo.rustflag(&html_root);
     cargo.rustdocflag(&html_root);
+
+    cargo.rustdocflag("-Zcrate-attr=warn(rust_2018_idioms)");
 }
 
 #[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
@@ -810,6 +812,9 @@ pub fn rustc_cargo(builder: &Builder<'_>, cargo: &mut Cargo, target: TargetSelec
         .arg(builder.rustc_features(builder.kind))
         .arg("--manifest-path")
         .arg(builder.src.join("compiler/rustc/Cargo.toml"));
+
+    cargo.rustdocflag("-Zcrate-attr=warn(rust_2018_idioms)");
+
     rustc_cargo_env(builder, cargo, target, stage);
 }