Rollup merge of #67989 - ollie27:rustdoc_unstable, r=GuillaumeGomez

rustdoc: Don't allow `#![feature(...)]` on stable or beta Fixes #67647 r? @GuillaumeGomez
rust-lang · Jan 14, 2020 · 9e47ddd · 9e47ddd
2 parents fd162a4 + 4057199
commit 9e47ddd
Showing 1 changed file with 1 addition and 2 deletions.
diff --git a/src/librustdoc/core.rs b/src/librustdoc/core.rs
@@ -307,8 +307,7 @@ pub fn run_core(options: RustdocOptions) -> (clean::Crate, RenderInfo, RenderOpt
         cg: codegen_options,
         externs,
         target_triple: target,
-        // Ensure that rustdoc works even if rustc is feature-staged
-        unstable_features: UnstableFeatures::Allow,
+        unstable_features: UnstableFeatures::from_environment(),
         actually_rustdoc: true,
         debugging_opts: debugging_options,
         error_format,