Auto merge of #5442 - rust-lang:revert-5420-newret, r=Manishearth

Revert "Downgrade new_ret_no_self to pedantic"

Reverts rust-lang/rust-clippy#5420

This got through with the big rollup merge, where I didn't recheck every PR of the rollup. Reverting because of the reason given in https://github.com/rust-lang/rust-clippy/pull/5420#issuecomment-610744974 by @joshtriplett

changelog: Move new_ret_no_self back to style category

clippy_lints/src/lib.rs

@@ -1115,7 +1115,6 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
         LintId::of(&methods::FIND_MAP),
         LintId::of(&methods::INEFFICIENT_TO_STRING),
         LintId::of(&methods::MAP_FLATTEN),
-        LintId::of(&methods::NEW_RET_NO_SELF),
         LintId::of(&methods::OPTION_MAP_UNWRAP_OR),
         LintId::of(&methods::OPTION_MAP_UNWRAP_OR_ELSE),
         LintId::of(&methods::RESULT_MAP_UNWRAP_OR_ELSE),
@@ -1277,6 +1276,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
         LintId::of(&methods::ITER_NTH_ZERO),
         LintId::of(&methods::ITER_SKIP_NEXT),
         LintId::of(&methods::MANUAL_SATURATING_ARITHMETIC),
+        LintId::of(&methods::NEW_RET_NO_SELF),
         LintId::of(&methods::OK_EXPECT),
         LintId::of(&methods::OPTION_AND_THEN_SOME),
         LintId::of(&methods::OPTION_AS_REF_DEREF),
@@ -1456,6 +1456,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
         LintId::of(&methods::ITER_NTH_ZERO),
         LintId::of(&methods::ITER_SKIP_NEXT),
         LintId::of(&methods::MANUAL_SATURATING_ARITHMETIC),
+        LintId::of(&methods::NEW_RET_NO_SELF),
         LintId::of(&methods::OK_EXPECT),
         LintId::of(&methods::OPTION_MAP_OR_NONE),
         LintId::of(&methods::RESULT_MAP_OR_INTO_OPTION),

clippy_lints/src/methods/mod.rs

@@ -748,7 +748,7 @@
     /// }
     /// ```
     pub NEW_RET_NO_SELF,
-    pedantic,
+    style,
     "not returning `Self` in a `new` method"
 }
 

src/lintlist/mod.rs

@@ -1447,7 +1447,7 @@
     },
     Lint {
         name: "new_ret_no_self",
-        group: "pedantic",
+        group: "style",
         desc: "not returning `Self` in a `new` method",
         deprecation: None,
         module: "methods",