Update lints

Author: smoelius

clippy_lints/src/lib.rs

@@ -1241,6 +1241,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
         LintId::of(&infinite_iter::MAYBE_INFINITE_ITER),
         LintId::of(&items_after_statements::ITEMS_AFTER_STATEMENTS),
         LintId::of(&large_stack_arrays::LARGE_STACK_ARRAYS),
+        LintId::of(&let_underscore::LET_UNDERSCORE_DROP),
         LintId::of(&literal_representation::LARGE_DIGIT_GROUPS),
         LintId::of(&literal_representation::UNREADABLE_LITERAL),
         LintId::of(&loops::EXPLICIT_INTO_ITER_LOOP),
@@ -1384,7 +1385,6 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
         LintId::of(&len_zero::COMPARISON_TO_EMPTY),
         LintId::of(&len_zero::LEN_WITHOUT_IS_EMPTY),
         LintId::of(&len_zero::LEN_ZERO),
-        LintId::of(&let_underscore::LET_UNDERSCORE_DROP),
         LintId::of(&let_underscore::LET_UNDERSCORE_LOCK),
         LintId::of(&lifetimes::EXTRA_UNUSED_LIFETIMES),
         LintId::of(&lifetimes::NEEDLESS_LIFETIMES),
@@ -1811,7 +1811,6 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
         LintId::of(&infinite_iter::INFINITE_ITER),
         LintId::of(&inherent_to_string::INHERENT_TO_STRING_SHADOW_DISPLAY),
         LintId::of(&inline_fn_without_body::INLINE_FN_WITHOUT_BODY),
-        LintId::of(&let_underscore::LET_UNDERSCORE_DROP),
         LintId::of(&let_underscore::LET_UNDERSCORE_LOCK),
         LintId::of(&literal_representation::MISTYPED_LITERAL_SUFFIXES),
         LintId::of(&loops::FOR_LOOPS_OVER_FALLIBLES),

src/lintlist/mod.rs

@@ -1119,7 +1119,7 @@ vec![
     },
     Lint {
         name: "let_underscore_drop",
-        group: "correctness",
+        group: "pedantic",
         desc: "non-binding let on a type that implements `Drop`",
         deprecation: None,
         module: "let_underscore",