Move path_buf_push_overwrite to nursery

clippy_lints/src/lib.rs

@@ -807,7 +807,6 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>, conf: &Conf) {
         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
         panic_unimplemented::PANIC_PARAMS,
         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
-        path_buf_push_overwrite::PATH_BUF_PUSH_OVERWRITE,
         precedence::PRECEDENCE,
         ptr::CMP_NULL,
         ptr::MUT_FROM_REF,
@@ -1075,7 +1074,6 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>, conf: &Conf) {
         non_copy_const::BORROW_INTERIOR_MUTABLE_CONST,
         non_copy_const::DECLARE_INTERIOR_MUTABLE_CONST,
         open_options::NONSENSICAL_OPEN_OPTIONS,
-        path_buf_push_overwrite::PATH_BUF_PUSH_OVERWRITE,
         ptr::MUT_FROM_REF,
         ranges::ITERATOR_STEP_BY_ZERO,
         regex::INVALID_REGEX,
@@ -1125,6 +1123,7 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>, conf: &Conf) {
         missing_const_for_fn::MISSING_CONST_FOR_FN,
         mutex_atomic::MUTEX_INTEGER,
         needless_borrow::NEEDLESS_BORROW,
+        path_buf_push_overwrite::PATH_BUF_PUSH_OVERWRITE,
         redundant_clone::REDUNDANT_CLONE,
         unwrap::PANICKING_UNWRAP,
         unwrap::UNNECESSARY_UNWRAP,

clippy_lints/src/path_buf_push_overwrite.rs

@@ -34,7 +34,7 @@ declare_clippy_lint! {
     /// assert_eq!(x, PathBuf::from("/foo/bar"));
     /// ```
     pub PATH_BUF_PUSH_OVERWRITE,
-    correctness,
+    nursery,
     "calling `push` with file system root on `PathBuf` can overwrite it"
 }
 

tests/ui/path_buf_push_overwrite.fixed

@@ -1,6 +1,7 @@
 // run-rustfix
 use std::path::PathBuf;
 
+#[warn(clippy::all, clippy::path_buf_push_overwrite)]
 fn main() {
     let mut x = PathBuf::from("/foo");
     x.push("bar");

tests/ui/path_buf_push_overwrite.rs

@@ -1,6 +1,7 @@
 // run-rustfix
 use std::path::PathBuf;
 
+#[warn(clippy::all, clippy::path_buf_push_overwrite)]
 fn main() {
     let mut x = PathBuf::from("/foo");
     x.push("/bar");

tests/ui/path_buf_push_overwrite.stderr

@@ -1,10 +1,10 @@
 error: Calling `push` with '/' or '/' (file system root) will overwrite the previous path definition
-  --> $DIR/path_buf_push_overwrite.rs:6:12
+  --> $DIR/path_buf_push_overwrite.rs:7:12
    |
 LL |     x.push("/bar");
    |            ^^^^^^ help: try: `"bar"`
    |
-   = note: #[deny(clippy::path_buf_push_overwrite)] on by default
+   = note: `-D clippy::path-buf-push-overwrite` implied by `-D warnings`
 
 error: aborting due to previous error