Auto merge of #53832 - pietroalbini:rollup, r=pietroalbini

Rollup of 20 pull requests

Successful merges:

 - #51760 (Add another PartialEq example)
 - #53113 (Add example for Cow)
 - #53129 (remove `let x = baz` which was obscuring the real error)
 - #53389 (document effect of join on memory ordering)
 - #53472 (Use FxHash{Map,Set} instead of the default Hash{Map,Set} everywhere in rustc.)
 - #53476 (Add partialeq implementation for TryFromIntError type)
 - #53513 (Force-inline `shallow_resolve` at its hottest call site.)
 - #53655 (set applicability)
 - #53702 (Fix stabilisation version for macro_vis_matcher.)
 - #53727 (Do not suggest dereferencing in macro)
 - #53732 (save-analysis: Differentiate foreign functions and statics.)
 - #53740 (add llvm-readobj to llvm-tools-preview)
 - #53743 (fix a typo: taget_env -> target_env)
 - #53747 (Rustdoc fixes)
 - #53753 (expand keep-stage --help text)
 - #53756 (Fix typo in comment)
 - #53768 (move file-extension based .gitignore down to src/)
 - #53785 (Fix a comment in src/libcore/slice/mod.rs)
 - #53786 (Replace usages of 'bad_style' with 'nonstandard_style'.)
 - #53806 (Fix UI issues on Implementations on Foreign types)

Failed merges:

r? @ghost

2 files changed, 6 insertions, 6 deletions

diff --git a/src/librustc_data_structures/flock.rs b/src/librustc_data_structures/flock.rs
index 3f248dadb66..f10a9a68bed 100644
--- a/src/librustc_data_structures/flock.rs
+++ b/src/librustc_data_structures/flock.rs
@@ -239,7 +239,7 @@ mod imp {
 }
 
 #[cfg(windows)]
-#[allow(bad_style)]
+#[allow(nonstandard_style)]
 mod imp {
     use std::io;
     use std::mem;
diff --git a/src/librustc_data_structures/graph/test.rs b/src/librustc_data_structures/graph/test.rs
index b72d011c99b..26cc2c9f17c 100644
--- a/src/librustc_data_structures/graph/test.rs
+++ b/src/librustc_data_structures/graph/test.rs
@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use std::collections::HashMap;
+use fx::FxHashMap;
 use std::cmp::max;
 use std::slice;
 use std::iter;
@@ -18,8 +18,8 @@ use super::*;
 pub struct TestGraph {
     num_nodes: usize,
     start_node: usize,
-    successors: HashMap<usize, Vec<usize>>,
-    predecessors: HashMap<usize, Vec<usize>>,
+    successors: FxHashMap<usize, Vec<usize>>,
+    predecessors: FxHashMap<usize, Vec<usize>>,
 }
 
 impl TestGraph {
@@ -27,8 +27,8 @@ impl TestGraph {
         let mut graph = TestGraph {
             num_nodes: start_node + 1,
             start_node,
-            successors: HashMap::new(),
-            predecessors: HashMap::new(),
+            successors: FxHashMap::default(),
+            predecessors: FxHashMap::default(),
         };
         for &(source, target) in edges {
             graph.num_nodes = max(graph.num_nodes, source + 1);