From 5f55f863db0d9d635fcbfacc74982e03b0c1a64a Mon Sep 17 00:00:00 2001
From: Urgau <urgau@numericable.fr>
Date: Fri, 12 May 2023 20:02:01 +0200
Subject: [PATCH] Drop uplifted clippy::undropped_manually_drops

---
 .../clippy/clippy_lints/src/declared_lints.rs |   1 -
 .../clippy_lints/src/drop_forget_ref.rs       |  44 +------
 .../clippy/clippy_lints/src/renamed_lints.rs  |   1 +
 src/tools/clippy/tests/ui/rename.fixed        |   2 +
 src/tools/clippy/tests/ui/rename.rs           |   2 +
 src/tools/clippy/tests/ui/rename.stderr       | 108 +++++++++---------
 .../tests/ui/undropped_manually_drops.rs      |  26 -----
 .../tests/ui/undropped_manually_drops.stderr  |  19 ---
 8 files changed, 64 insertions(+), 139 deletions(-)
 delete mode 100644 src/tools/clippy/tests/ui/undropped_manually_drops.rs
 delete mode 100644 src/tools/clippy/tests/ui/undropped_manually_drops.stderr

diff --git a/src/tools/clippy/clippy_lints/src/declared_lints.rs b/src/tools/clippy/clippy_lints/src/declared_lints.rs
index 15ff8be0fd9..6270d261313 100644
--- a/src/tools/clippy/clippy_lints/src/declared_lints.rs
+++ b/src/tools/clippy/clippy_lints/src/declared_lints.rs
@@ -136,7 +136,6 @@ pub(crate) static LINTS: &[&crate::LintInfo] = &[
     crate::double_parens::DOUBLE_PARENS_INFO,
     crate::drop_forget_ref::DROP_NON_DROP_INFO,
     crate::drop_forget_ref::FORGET_NON_DROP_INFO,
-    crate::drop_forget_ref::UNDROPPED_MANUALLY_DROPS_INFO,
     crate::duplicate_mod::DUPLICATE_MOD_INFO,
     crate::else_if_without_else::ELSE_IF_WITHOUT_ELSE_INFO,
     crate::empty_drop::EMPTY_DROP_INFO,
diff --git a/src/tools/clippy/clippy_lints/src/drop_forget_ref.rs b/src/tools/clippy/clippy_lints/src/drop_forget_ref.rs
index 9c60edb1794..7a4b9a87aeb 100644
--- a/src/tools/clippy/clippy_lints/src/drop_forget_ref.rs
+++ b/src/tools/clippy/clippy_lints/src/drop_forget_ref.rs
@@ -1,4 +1,4 @@
-use clippy_utils::diagnostics::{span_lint_and_help, span_lint_and_note};
+use clippy_utils::diagnostics::span_lint_and_note;
 use clippy_utils::get_parent_node;
 use clippy_utils::is_must_use_func_call;
 use clippy_utils::ty::{is_copy, is_must_use_ty, is_type_lang_item};
@@ -47,35 +47,6 @@ declare_clippy_lint! {
     "call to `std::mem::forget` with a value which does not implement `Drop`"
 }
 
-declare_clippy_lint! {
-    /// ### What it does
-    /// Prevents the safe `std::mem::drop` function from being called on `std::mem::ManuallyDrop`.
-    ///
-    /// ### Why is this bad?
-    /// The safe `drop` function does not drop the inner value of a `ManuallyDrop`.
-    ///
-    /// ### Known problems
-    /// Does not catch cases if the user binds `std::mem::drop`
-    /// to a different name and calls it that way.
-    ///
-    /// ### Example
-    /// ```rust
-    /// struct S;
-    /// drop(std::mem::ManuallyDrop::new(S));
-    /// ```
-    /// Use instead:
-    /// ```rust
-    /// struct S;
-    /// unsafe {
-    ///     std::mem::ManuallyDrop::drop(&mut std::mem::ManuallyDrop::new(S));
-    /// }
-    /// ```
-    #[clippy::version = "1.49.0"]
-    pub UNDROPPED_MANUALLY_DROPS,
-    correctness,
-    "use of safe `std::mem::drop` function to drop a std::mem::ManuallyDrop, which will not drop the inner value"
-}
-
 const DROP_NON_DROP_SUMMARY: &str = "call to `std::mem::drop` with a value that does not implement `Drop`. \
                                  Dropping such a type only extends its contained lifetimes";
 const FORGET_NON_DROP_SUMMARY: &str = "call to `std::mem::forget` with a value that does not implement `Drop`. \
@@ -84,7 +55,6 @@ const FORGET_NON_DROP_SUMMARY: &str = "call to `std::mem::forget` with a value t
 declare_lint_pass!(DropForgetRef => [
     DROP_NON_DROP,
     FORGET_NON_DROP,
-    UNDROPPED_MANUALLY_DROPS
 ]);
 
 impl<'tcx> LateLintPass<'tcx> for DropForgetRef {
@@ -103,17 +73,7 @@ impl<'tcx> LateLintPass<'tcx> for DropForgetRef {
                 sym::mem_forget if arg_ty.is_ref() => return,
                 sym::mem_drop if is_copy && !drop_is_single_call_in_arm => return,
                 sym::mem_forget if is_copy => return,
-                sym::mem_drop if is_type_lang_item(cx, arg_ty, LangItem::ManuallyDrop) => {
-                    span_lint_and_help(
-                        cx,
-                        UNDROPPED_MANUALLY_DROPS,
-                        expr.span,
-                        "the inner value of this ManuallyDrop will not be dropped",
-                        None,
-                        "to drop a `ManuallyDrop<T>`, use std::mem::ManuallyDrop::drop",
-                    );
-                    return;
-                }
+                sym::mem_drop if is_type_lang_item(cx, arg_ty, LangItem::ManuallyDrop) => return,
                 sym::mem_drop
                     if !(arg_ty.needs_drop(cx.tcx, cx.param_env)
                         || is_must_use_func_call(cx, arg)
diff --git a/src/tools/clippy/clippy_lints/src/renamed_lints.rs b/src/tools/clippy/clippy_lints/src/renamed_lints.rs
index 4cb41830023..f76fa76f076 100644
--- a/src/tools/clippy/clippy_lints/src/renamed_lints.rs
+++ b/src/tools/clippy/clippy_lints/src/renamed_lints.rs
@@ -50,6 +50,7 @@ pub static RENAMED_LINTS: &[(&str, &str)] = &[
     ("clippy::panic_params", "non_fmt_panics"),
     ("clippy::positional_named_format_parameters", "named_arguments_used_positionally"),
     ("clippy::temporary_cstring_as_ptr", "temporary_cstring_as_ptr"),
+    ("clippy::undropped_manually_drops", "undropped_manually_drops"),
     ("clippy::unknown_clippy_lints", "unknown_lints"),
     ("clippy::unused_label", "unused_labels"),
 ];
diff --git a/src/tools/clippy/tests/ui/rename.fixed b/src/tools/clippy/tests/ui/rename.fixed
index 30f2bfc8c1a..954145fc4e6 100644
--- a/src/tools/clippy/tests/ui/rename.fixed
+++ b/src/tools/clippy/tests/ui/rename.fixed
@@ -47,6 +47,7 @@
 #![allow(named_arguments_used_positionally)]
 #![allow(suspicious_double_ref_op)]
 #![allow(temporary_cstring_as_ptr)]
+#![allow(undropped_manually_drops)]
 #![allow(unknown_lints)]
 #![allow(unused_labels)]
 #![warn(clippy::almost_complete_range)]
@@ -97,6 +98,7 @@
 #![warn(non_fmt_panics)]
 #![warn(named_arguments_used_positionally)]
 #![warn(temporary_cstring_as_ptr)]
+#![warn(undropped_manually_drops)]
 #![warn(unknown_lints)]
 #![warn(unused_labels)]
 
diff --git a/src/tools/clippy/tests/ui/rename.rs b/src/tools/clippy/tests/ui/rename.rs
index 3939914d422..067a3109afb 100644
--- a/src/tools/clippy/tests/ui/rename.rs
+++ b/src/tools/clippy/tests/ui/rename.rs
@@ -47,6 +47,7 @@
 #![allow(named_arguments_used_positionally)]
 #![allow(suspicious_double_ref_op)]
 #![allow(temporary_cstring_as_ptr)]
+#![allow(undropped_manually_drops)]
 #![allow(unknown_lints)]
 #![allow(unused_labels)]
 #![warn(clippy::almost_complete_letter_range)]
@@ -97,6 +98,7 @@
 #![warn(clippy::panic_params)]
 #![warn(clippy::positional_named_format_parameters)]
 #![warn(clippy::temporary_cstring_as_ptr)]
+#![warn(clippy::undropped_manually_drops)]
 #![warn(clippy::unknown_clippy_lints)]
 #![warn(clippy::unused_label)]
 
diff --git a/src/tools/clippy/tests/ui/rename.stderr b/src/tools/clippy/tests/ui/rename.stderr
index 7290cf32e5b..1819d108c57 100644
--- a/src/tools/clippy/tests/ui/rename.stderr
+++ b/src/tools/clippy/tests/ui/rename.stderr
@@ -1,5 +1,5 @@
 error: lint `clippy::almost_complete_letter_range` has been renamed to `clippy::almost_complete_range`
-  --> $DIR/rename.rs:52:9
+  --> $DIR/rename.rs:53:9
    |
 LL | #![warn(clippy::almost_complete_letter_range)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::almost_complete_range`
@@ -7,298 +7,304 @@ LL | #![warn(clippy::almost_complete_letter_range)]
    = note: `-D renamed-and-removed-lints` implied by `-D warnings`
 
 error: lint `clippy::blacklisted_name` has been renamed to `clippy::disallowed_names`
-  --> $DIR/rename.rs:53:9
+  --> $DIR/rename.rs:54:9
    |
 LL | #![warn(clippy::blacklisted_name)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::disallowed_names`
 
 error: lint `clippy::block_in_if_condition_expr` has been renamed to `clippy::blocks_in_if_conditions`
-  --> $DIR/rename.rs:54:9
+  --> $DIR/rename.rs:55:9
    |
 LL | #![warn(clippy::block_in_if_condition_expr)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::blocks_in_if_conditions`
 
 error: lint `clippy::block_in_if_condition_stmt` has been renamed to `clippy::blocks_in_if_conditions`
-  --> $DIR/rename.rs:55:9
+  --> $DIR/rename.rs:56:9
    |
 LL | #![warn(clippy::block_in_if_condition_stmt)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::blocks_in_if_conditions`
 
 error: lint `clippy::box_vec` has been renamed to `clippy::box_collection`
-  --> $DIR/rename.rs:56:9
+  --> $DIR/rename.rs:57:9
    |
 LL | #![warn(clippy::box_vec)]
    |         ^^^^^^^^^^^^^^^ help: use the new name: `clippy::box_collection`
 
 error: lint `clippy::const_static_lifetime` has been renamed to `clippy::redundant_static_lifetimes`
-  --> $DIR/rename.rs:57:9
+  --> $DIR/rename.rs:58:9
    |
 LL | #![warn(clippy::const_static_lifetime)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::redundant_static_lifetimes`
 
 error: lint `clippy::cyclomatic_complexity` has been renamed to `clippy::cognitive_complexity`
-  --> $DIR/rename.rs:58:9
+  --> $DIR/rename.rs:59:9
    |
 LL | #![warn(clippy::cyclomatic_complexity)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::cognitive_complexity`
 
 error: lint `clippy::derive_hash_xor_eq` has been renamed to `clippy::derived_hash_with_manual_eq`
-  --> $DIR/rename.rs:59:9
+  --> $DIR/rename.rs:60:9
    |
 LL | #![warn(clippy::derive_hash_xor_eq)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::derived_hash_with_manual_eq`
 
 error: lint `clippy::disallowed_method` has been renamed to `clippy::disallowed_methods`
-  --> $DIR/rename.rs:60:9
+  --> $DIR/rename.rs:61:9
    |
 LL | #![warn(clippy::disallowed_method)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::disallowed_methods`
 
 error: lint `clippy::disallowed_type` has been renamed to `clippy::disallowed_types`
-  --> $DIR/rename.rs:61:9
+  --> $DIR/rename.rs:62:9
    |
 LL | #![warn(clippy::disallowed_type)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::disallowed_types`
 
 error: lint `clippy::eval_order_dependence` has been renamed to `clippy::mixed_read_write_in_expression`
-  --> $DIR/rename.rs:62:9
+  --> $DIR/rename.rs:63:9
    |
 LL | #![warn(clippy::eval_order_dependence)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::mixed_read_write_in_expression`
 
 error: lint `clippy::identity_conversion` has been renamed to `clippy::useless_conversion`
-  --> $DIR/rename.rs:63:9
+  --> $DIR/rename.rs:64:9
    |
 LL | #![warn(clippy::identity_conversion)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::useless_conversion`
 
 error: lint `clippy::if_let_some_result` has been renamed to `clippy::match_result_ok`
-  --> $DIR/rename.rs:64:9
+  --> $DIR/rename.rs:65:9
    |
 LL | #![warn(clippy::if_let_some_result)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::match_result_ok`
 
 error: lint `clippy::integer_arithmetic` has been renamed to `clippy::arithmetic_side_effects`
-  --> $DIR/rename.rs:65:9
+  --> $DIR/rename.rs:66:9
    |
 LL | #![warn(clippy::integer_arithmetic)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::arithmetic_side_effects`
 
 error: lint `clippy::logic_bug` has been renamed to `clippy::overly_complex_bool_expr`
-  --> $DIR/rename.rs:66:9
+  --> $DIR/rename.rs:67:9
    |
 LL | #![warn(clippy::logic_bug)]
    |         ^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::overly_complex_bool_expr`
 
 error: lint `clippy::new_without_default_derive` has been renamed to `clippy::new_without_default`
-  --> $DIR/rename.rs:67:9
+  --> $DIR/rename.rs:68:9
    |
 LL | #![warn(clippy::new_without_default_derive)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::new_without_default`
 
 error: lint `clippy::option_and_then_some` has been renamed to `clippy::bind_instead_of_map`
-  --> $DIR/rename.rs:68:9
+  --> $DIR/rename.rs:69:9
    |
 LL | #![warn(clippy::option_and_then_some)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::bind_instead_of_map`
 
 error: lint `clippy::option_expect_used` has been renamed to `clippy::expect_used`
-  --> $DIR/rename.rs:69:9
+  --> $DIR/rename.rs:70:9
    |
 LL | #![warn(clippy::option_expect_used)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::expect_used`
 
 error: lint `clippy::option_map_unwrap_or` has been renamed to `clippy::map_unwrap_or`
-  --> $DIR/rename.rs:70:9
+  --> $DIR/rename.rs:71:9
    |
 LL | #![warn(clippy::option_map_unwrap_or)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::map_unwrap_or`
 
 error: lint `clippy::option_map_unwrap_or_else` has been renamed to `clippy::map_unwrap_or`
-  --> $DIR/rename.rs:71:9
+  --> $DIR/rename.rs:72:9
    |
 LL | #![warn(clippy::option_map_unwrap_or_else)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::map_unwrap_or`
 
 error: lint `clippy::option_unwrap_used` has been renamed to `clippy::unwrap_used`
-  --> $DIR/rename.rs:72:9
+  --> $DIR/rename.rs:73:9
    |
 LL | #![warn(clippy::option_unwrap_used)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::unwrap_used`
 
 error: lint `clippy::ref_in_deref` has been renamed to `clippy::needless_borrow`
-  --> $DIR/rename.rs:73:9
+  --> $DIR/rename.rs:74:9
    |
 LL | #![warn(clippy::ref_in_deref)]
    |         ^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::needless_borrow`
 
 error: lint `clippy::result_expect_used` has been renamed to `clippy::expect_used`
-  --> $DIR/rename.rs:74:9
+  --> $DIR/rename.rs:75:9
    |
 LL | #![warn(clippy::result_expect_used)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::expect_used`
 
 error: lint `clippy::result_map_unwrap_or_else` has been renamed to `clippy::map_unwrap_or`
-  --> $DIR/rename.rs:75:9
+  --> $DIR/rename.rs:76:9
    |
 LL | #![warn(clippy::result_map_unwrap_or_else)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::map_unwrap_or`
 
 error: lint `clippy::result_unwrap_used` has been renamed to `clippy::unwrap_used`
-  --> $DIR/rename.rs:76:9
+  --> $DIR/rename.rs:77:9
    |
 LL | #![warn(clippy::result_unwrap_used)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::unwrap_used`
 
 error: lint `clippy::single_char_push_str` has been renamed to `clippy::single_char_add_str`
-  --> $DIR/rename.rs:77:9
+  --> $DIR/rename.rs:78:9
    |
 LL | #![warn(clippy::single_char_push_str)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::single_char_add_str`
 
 error: lint `clippy::stutter` has been renamed to `clippy::module_name_repetitions`
-  --> $DIR/rename.rs:78:9
+  --> $DIR/rename.rs:79:9
    |
 LL | #![warn(clippy::stutter)]
    |         ^^^^^^^^^^^^^^^ help: use the new name: `clippy::module_name_repetitions`
 
 error: lint `clippy::to_string_in_display` has been renamed to `clippy::recursive_format_impl`
-  --> $DIR/rename.rs:79:9
+  --> $DIR/rename.rs:80:9
    |
 LL | #![warn(clippy::to_string_in_display)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::recursive_format_impl`
 
 error: lint `clippy::zero_width_space` has been renamed to `clippy::invisible_characters`
-  --> $DIR/rename.rs:80:9
+  --> $DIR/rename.rs:81:9
    |
 LL | #![warn(clippy::zero_width_space)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::invisible_characters`
 
 error: lint `clippy::cast_ref_to_mut` has been renamed to `cast_ref_to_mut`
-  --> $DIR/rename.rs:81:9
+  --> $DIR/rename.rs:82:9
    |
 LL | #![warn(clippy::cast_ref_to_mut)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `cast_ref_to_mut`
 
 error: lint `clippy::clone_double_ref` has been renamed to `suspicious_double_ref_op`
-  --> $DIR/rename.rs:82:9
+  --> $DIR/rename.rs:83:9
    |
 LL | #![warn(clippy::clone_double_ref)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `suspicious_double_ref_op`
 
 error: lint `clippy::drop_bounds` has been renamed to `drop_bounds`
-  --> $DIR/rename.rs:83:9
+  --> $DIR/rename.rs:84:9
    |
 LL | #![warn(clippy::drop_bounds)]
    |         ^^^^^^^^^^^^^^^^^^^ help: use the new name: `drop_bounds`
 
 error: lint `clippy::drop_copy` has been renamed to `dropping_copy_types`
-  --> $DIR/rename.rs:84:9
+  --> $DIR/rename.rs:85:9
    |
 LL | #![warn(clippy::drop_copy)]
    |         ^^^^^^^^^^^^^^^^^ help: use the new name: `dropping_copy_types`
 
 error: lint `clippy::drop_ref` has been renamed to `dropping_references`
-  --> $DIR/rename.rs:85:9
+  --> $DIR/rename.rs:86:9
    |
 LL | #![warn(clippy::drop_ref)]
    |         ^^^^^^^^^^^^^^^^ help: use the new name: `dropping_references`
 
 error: lint `clippy::for_loop_over_option` has been renamed to `for_loops_over_fallibles`
-  --> $DIR/rename.rs:86:9
+  --> $DIR/rename.rs:87:9
    |
 LL | #![warn(clippy::for_loop_over_option)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `for_loops_over_fallibles`
 
 error: lint `clippy::for_loop_over_result` has been renamed to `for_loops_over_fallibles`
-  --> $DIR/rename.rs:87:9
+  --> $DIR/rename.rs:88:9
    |
 LL | #![warn(clippy::for_loop_over_result)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `for_loops_over_fallibles`
 
 error: lint `clippy::for_loops_over_fallibles` has been renamed to `for_loops_over_fallibles`
-  --> $DIR/rename.rs:88:9
+  --> $DIR/rename.rs:89:9
    |
 LL | #![warn(clippy::for_loops_over_fallibles)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `for_loops_over_fallibles`
 
 error: lint `clippy::forget_copy` has been renamed to `forgetting_copy_types`
-  --> $DIR/rename.rs:89:9
+  --> $DIR/rename.rs:90:9
    |
 LL | #![warn(clippy::forget_copy)]
    |         ^^^^^^^^^^^^^^^^^^^ help: use the new name: `forgetting_copy_types`
 
 error: lint `clippy::forget_ref` has been renamed to `forgetting_references`
-  --> $DIR/rename.rs:90:9
+  --> $DIR/rename.rs:91:9
    |
 LL | #![warn(clippy::forget_ref)]
    |         ^^^^^^^^^^^^^^^^^^ help: use the new name: `forgetting_references`
 
 error: lint `clippy::into_iter_on_array` has been renamed to `array_into_iter`
-  --> $DIR/rename.rs:91:9
+  --> $DIR/rename.rs:92:9
    |
 LL | #![warn(clippy::into_iter_on_array)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `array_into_iter`
 
 error: lint `clippy::invalid_atomic_ordering` has been renamed to `invalid_atomic_ordering`
-  --> $DIR/rename.rs:92:9
+  --> $DIR/rename.rs:93:9
    |
 LL | #![warn(clippy::invalid_atomic_ordering)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_atomic_ordering`
 
 error: lint `clippy::invalid_ref` has been renamed to `invalid_value`
-  --> $DIR/rename.rs:93:9
+  --> $DIR/rename.rs:94:9
    |
 LL | #![warn(clippy::invalid_ref)]
    |         ^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_value`
 
 error: lint `clippy::invalid_utf8_in_unchecked` has been renamed to `invalid_from_utf8_unchecked`
-  --> $DIR/rename.rs:94:9
+  --> $DIR/rename.rs:95:9
    |
 LL | #![warn(clippy::invalid_utf8_in_unchecked)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `invalid_from_utf8_unchecked`
 
 error: lint `clippy::let_underscore_drop` has been renamed to `let_underscore_drop`
-  --> $DIR/rename.rs:95:9
+  --> $DIR/rename.rs:96:9
    |
 LL | #![warn(clippy::let_underscore_drop)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `let_underscore_drop`
 
 error: lint `clippy::mem_discriminant_non_enum` has been renamed to `enum_intrinsics_non_enums`
-  --> $DIR/rename.rs:96:9
+  --> $DIR/rename.rs:97:9
    |
 LL | #![warn(clippy::mem_discriminant_non_enum)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `enum_intrinsics_non_enums`
 
 error: lint `clippy::panic_params` has been renamed to `non_fmt_panics`
-  --> $DIR/rename.rs:97:9
+  --> $DIR/rename.rs:98:9
    |
 LL | #![warn(clippy::panic_params)]
    |         ^^^^^^^^^^^^^^^^^^^^ help: use the new name: `non_fmt_panics`
 
 error: lint `clippy::positional_named_format_parameters` has been renamed to `named_arguments_used_positionally`
-  --> $DIR/rename.rs:98:9
+  --> $DIR/rename.rs:99:9
    |
 LL | #![warn(clippy::positional_named_format_parameters)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `named_arguments_used_positionally`
 
 error: lint `clippy::temporary_cstring_as_ptr` has been renamed to `temporary_cstring_as_ptr`
-  --> $DIR/rename.rs:99:9
+  --> $DIR/rename.rs:100:9
    |
 LL | #![warn(clippy::temporary_cstring_as_ptr)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `temporary_cstring_as_ptr`
 
+error: lint `clippy::undropped_manually_drops` has been renamed to `undropped_manually_drops`
+  --> $DIR/rename.rs:101:9
+   |
+LL | #![warn(clippy::undropped_manually_drops)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `undropped_manually_drops`
+
 error: lint `clippy::unknown_clippy_lints` has been renamed to `unknown_lints`
-  --> $DIR/rename.rs:100:9
+  --> $DIR/rename.rs:102:9
    |
 LL | #![warn(clippy::unknown_clippy_lints)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `unknown_lints`
 
 error: lint `clippy::unused_label` has been renamed to `unused_labels`
-  --> $DIR/rename.rs:101:9
+  --> $DIR/rename.rs:103:9
    |
 LL | #![warn(clippy::unused_label)]
    |         ^^^^^^^^^^^^^^^^^^^^ help: use the new name: `unused_labels`
 
-error: aborting due to 50 previous errors
+error: aborting due to 51 previous errors
 
diff --git a/src/tools/clippy/tests/ui/undropped_manually_drops.rs b/src/tools/clippy/tests/ui/undropped_manually_drops.rs
deleted file mode 100644
index f4cfc92e1cd..00000000000
--- a/src/tools/clippy/tests/ui/undropped_manually_drops.rs
+++ /dev/null
@@ -1,26 +0,0 @@
-#![warn(clippy::undropped_manually_drops)]
-
-struct S;
-
-fn main() {
-    let f = std::mem::drop;
-    let g = std::mem::ManuallyDrop::drop;
-    let mut manual1 = std::mem::ManuallyDrop::new(S);
-    let mut manual2 = std::mem::ManuallyDrop::new(S);
-    let mut manual3 = std::mem::ManuallyDrop::new(S);
-    let mut manual4 = std::mem::ManuallyDrop::new(S);
-
-    // These lines will not drop `S` and should be linted
-    drop(std::mem::ManuallyDrop::new(S));
-    drop(manual1);
-
-    // FIXME: this line is not linted, though it should be
-    f(manual2);
-
-    // These lines will drop `S` and should be okay.
-    unsafe {
-        std::mem::ManuallyDrop::drop(&mut std::mem::ManuallyDrop::new(S));
-        std::mem::ManuallyDrop::drop(&mut manual3);
-        g(&mut manual4);
-    }
-}
diff --git a/src/tools/clippy/tests/ui/undropped_manually_drops.stderr b/src/tools/clippy/tests/ui/undropped_manually_drops.stderr
deleted file mode 100644
index 92611a9b7df..00000000000
--- a/src/tools/clippy/tests/ui/undropped_manually_drops.stderr
+++ /dev/null
@@ -1,19 +0,0 @@
-error: the inner value of this ManuallyDrop will not be dropped
-  --> $DIR/undropped_manually_drops.rs:14:5
-   |
-LL |     drop(std::mem::ManuallyDrop::new(S));
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = help: to drop a `ManuallyDrop<T>`, use std::mem::ManuallyDrop::drop
-   = note: `-D clippy::undropped-manually-drops` implied by `-D warnings`
-
-error: the inner value of this ManuallyDrop will not be dropped
-  --> $DIR/undropped_manually_drops.rs:15:5
-   |
-LL |     drop(manual1);
-   |     ^^^^^^^^^^^^^
-   |
-   = help: to drop a `ManuallyDrop<T>`, use std::mem::ManuallyDrop::drop
-
-error: aborting due to 2 previous errors
-