refactor: Move to anstream + anstyle for styling

Author: Muscraft

clippy_lints/src/doc/needless_doctest_main.rs

@@ -6,7 +6,7 @@ use crate::doc::{NEEDLESS_DOCTEST_MAIN, TEST_ATTR_IN_DOCTEST};
 use clippy_utils::diagnostics::span_lint;
 use rustc_ast::{CoroutineKind, Fn, FnRetTy, Item, ItemKind};
 use rustc_errors::emitter::HumanEmitter;
-use rustc_errors::{Diag, DiagCtxt};
+use rustc_errors::{AutoStream, Diag, DiagCtxt};
 use rustc_lint::LateContext;
 use rustc_parse::lexer::StripTokens;
 use rustc_parse::new_parser_from_source_str;
@@ -44,7 +44,7 @@ pub fn check(
                 let filename = FileName::anon_source_code(&code);
 
                 let translator = rustc_driver::default_translator();
-                let emitter = HumanEmitter::new(Box::new(io::sink()), translator);
+                let emitter = HumanEmitter::new(AutoStream::never(Box::new(io::sink())), translator);
                 let dcx = DiagCtxt::new(Box::new(emitter)).disable_warnings();
                 #[expect(clippy::arc_with_non_send_sync)] // `Arc` is expected by with_dcx
                 let sm = Arc::new(SourceMap::new(FilePathMapping::empty()));