Auto merge of #86920 - JohnTitor:rollup-buvzpkr, r=JohnTitor

Rollup of 8 pull requests

Successful merges:

 - #80918 (Add Integer::log variants)
 - #86717 (Rename some Rust 2021 lints to better names )
 - #86819 (Clean up rustdoc IDs)
 - #86880 (Test ManuallyDrop::clone_from.)
 - #86906 (Replace deprecated compare_and_swap and fix typo in core::sync::atomic::{fence, compiler_fence} docs)
 - #86907 (Migrate `cpu-usage-over-time.py` to Python 3)
 - #86916 (rewrote documentation for thread::yield_now())
 - #86919 (Update books)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

CHANGELOG.md

@@ -592,7 +592,7 @@ Released 2021-02-11
 
 * Previously deprecated [`str_to_string`] and [`string_to_string`] have been un-deprecated
   as `restriction` lints [#6333](https://github.com/rust-lang/rust-clippy/pull/6333)
-* Deprecate `panic_params` lint. This is now available in rustc as `non_fmt_panic`
+* Deprecate `panic_params` lint. This is now available in rustc as `non_fmt_panics`
   [#6351](https://github.com/rust-lang/rust-clippy/pull/6351)
 * Move [`map_err_ignore`] to `restriction`
   [#6416](https://github.com/rust-lang/rust-clippy/pull/6416)

clippy_lints/src/lib.rs

@@ -2171,7 +2171,7 @@ pub fn register_renamed(ls: &mut rustc_lint::LintStore) {
     ls.register_renamed("clippy::unused_label", "unused_labels");
     ls.register_renamed("clippy::drop_bounds", "drop_bounds");
     ls.register_renamed("clippy::temporary_cstring_as_ptr", "temporary_cstring_as_ptr");
-    ls.register_renamed("clippy::panic_params", "non_fmt_panic");
+    ls.register_renamed("clippy::panic_params", "non_fmt_panics");
     ls.register_renamed("clippy::unknown_clippy_lints", "unknown_lints");
 }
 

tests/ui/assertions_on_constants.rs

@@ -1,4 +1,4 @@
-#![allow(non_fmt_panic)]
+#![allow(non_fmt_panics)]
 
 macro_rules! assert_const {
     ($len:expr) => {

tests/ui/deprecated.stderr

@@ -60,11 +60,11 @@ error: lint `clippy::temporary_cstring_as_ptr` has been renamed to `temporary_cs
 LL | #[warn(clippy::temporary_cstring_as_ptr)]
    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `temporary_cstring_as_ptr`
 
-error: lint `clippy::panic_params` has been renamed to `non_fmt_panic`
+error: lint `clippy::panic_params` has been renamed to `non_fmt_panics`
   --> $DIR/deprecated.rs:11:8
    |
 LL | #[warn(clippy::panic_params)]
-   |        ^^^^^^^^^^^^^^^^^^^^ help: use the new name: `non_fmt_panic`
+   |        ^^^^^^^^^^^^^^^^^^^^ help: use the new name: `non_fmt_panics`
 
 error: lint `clippy::unknown_clippy_lints` has been renamed to `unknown_lints`
   --> $DIR/deprecated.rs:12:8