Auto merge of #69570 - Dylan-DPC:rollup-d6boczt, r=Dylan-DPC

Rollup of 6 pull requests

Successful merges:

 - #69477 (docs: add mention of async blocks in move keyword docs)
 - #69504 (Use assert_ne in hash tests)
 - #69546 (use to_vec() instead of .iter().cloned().collect() to convert slices to vecs.)
 - #69551 (use is_empty() instead of len() == x  to determine if structs are empty.)
 - #69563 (Fix no_std detection for target triples)
 - #69567 (use .to_string() instead of format!() macro to create strings)

Failed merges:

r? @ghost

Author: bors

src/bootstrap/config.rs

@@ -180,7 +180,7 @@ pub struct Target {
 impl Target {
     pub fn from_triple(triple: &str) -> Self {
         let mut target: Self = Default::default();
-        if triple.contains("-none-") || triple.contains("nvptx") {
+        if triple.contains("-none") || triple.contains("nvptx") {
             target.no_std = true;
         }
         target

src/libcore/slice/mod.rs

@@ -3823,7 +3823,7 @@ where
         // The last index of self.v is already checked and found to match
         // by the last iteration, so we start searching a new match
         // one index to the left.
-        let remainder = if self.v.len() == 0 { &[] } else { &self.v[..(self.v.len() - 1)] };
+        let remainder = if self.v.is_empty() { &[] } else { &self.v[..(self.v.len() - 1)] };
         let idx = remainder.iter().rposition(|x| (self.pred)(x)).map(|idx| idx + 1).unwrap_or(0);
         if idx == 0 {
             self.finished = true;
@@ -4033,7 +4033,7 @@ where
             return None;
         }
 
-        let idx_opt = if self.v.len() == 0 {
+        let idx_opt = if self.v.is_empty() {
             None
         } else {
             // work around borrowck limitations