Change clippy configuration option.

clippy_lints/src/lib.rs

@@ -1180,7 +1180,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
     store.register_early_pass(|| box redundant_else::RedundantElse);
     store.register_late_pass(|| box create_dir::CreateDir);
     store.register_early_pass(|| box needless_arbitrary_self_type::NeedlessArbitrarySelfType);
-    let cargo_ignore_publish = conf._cargo_ignore_publish;
+    let cargo_ignore_publish = conf.cargo_ignore_publish;
     store.register_late_pass(move || box cargo_common_metadata::CargoCommonMetadata::new(cargo_ignore_publish));
     store.register_late_pass(|| box multiple_crate_versions::MultipleCrateVersions);
     store.register_late_pass(|| box wildcard_dependencies::WildcardDependencies);

clippy_lints/src/utils/conf.rs

@@ -174,7 +174,7 @@ fn $config() -> $Ty {
     /// Lint: UNREADABLE_LITERAL. Should the fraction of a decimal be linted to include separators.
     (unreadable_literal_lint_fractions, "unreadable_literal_lint_fractions": bool, true),
     /// Lint: _CARGO_COMMON_METADATA. For internal testing only, ignores the current `publish` settings in the Cargo manifest.
-    (_cargo_ignore_publish, "_cargo_ignore_publish": bool, false),
+    (cargo_ignore_publish, "cargo_ignore_publish": bool, false),
 }
 
 impl Default for Conf {

tests/ui-cargo/cargo_common_metadata/pass/clippy.toml

@@ -1 +1 @@
-_cargo_ignore_publish = true
+cargo-ignore-publish = true