Downgrade option_option to pedantic

Author: dtolnay

clippy_lints/src/lib.rs

@@ -1125,6 +1125,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
         LintId::of(&types::CAST_SIGN_LOSS),
         LintId::of(&types::INVALID_UPCAST_COMPARISONS),
         LintId::of(&types::LINKEDLIST),
+        LintId::of(&types::OPTION_OPTION),
         LintId::of(&unicode::NON_ASCII_LITERAL),
         LintId::of(&unicode::UNICODE_NOT_NFC),
         LintId::of(&unused_self::UNUSED_SELF),
@@ -1375,7 +1376,6 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
         LintId::of(&types::FN_TO_NUMERIC_CAST_WITH_TRUNCATION),
         LintId::of(&types::IMPLICIT_HASHER),
         LintId::of(&types::LET_UNIT_VALUE),
-        LintId::of(&types::OPTION_OPTION),
         LintId::of(&types::TYPE_COMPLEXITY),
         LintId::of(&types::UNIT_ARG),
         LintId::of(&types::UNIT_CMP),
@@ -1565,7 +1565,6 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
         LintId::of(&transmute::TRANSMUTE_PTR_TO_REF),
         LintId::of(&types::BORROWED_BOX),
         LintId::of(&types::CHAR_LIT_AS_U8),
-        LintId::of(&types::OPTION_OPTION),
         LintId::of(&types::TYPE_COMPLEXITY),
         LintId::of(&types::UNIT_ARG),
         LintId::of(&types::UNNECESSARY_CAST),

clippy_lints/src/types.rs

@@ -108,7 +108,7 @@ declare_clippy_lint! {
     /// }
     /// ```
     pub OPTION_OPTION,
-    complexity,
+    pedantic,
     "usage of `Option<Option<T>>`"
 }
 

src/lintlist/mod.rs

@@ -1566,7 +1566,7 @@ pub static ref ALL_LINTS: Vec<Lint> = vec![
     },
     Lint {
         name: "option_option",
-        group: "complexity",
+        group: "pedantic",
         desc: "usage of `Option<Option<T>>`",
         deprecation: None,
         module: "types",