Fix typos: 'occured' -> 'occurred' and 'non_existant' -> 'non_existent'

src/tools/llvm-bitcode-linker/src/linker.rs

@@ -68,7 +68,7 @@ fn link(&mut self) -> anyhow::Result<()> {
             .arg("-o")
             .arg(&self.link_path)
             .output()
-            .context("An error occured when calling llvm-link. Make sure the llvm-tools component is installed.")?;
+            .context("An error occurred when calling llvm-link. Make sure the llvm-tools component is installed.")?;
 
         if !llvm_link_output.status.success() {
             tracing::error!(
@@ -115,7 +115,7 @@ fn optimize(&mut self, optimization: Optimization, mut debug: bool) -> anyhow::R
         }
 
         let opt_output = opt_cmd.output().context(
-            "An error occured when calling opt. Make sure the llvm-tools component is installed.",
+            "An error occurred when calling opt. Make sure the llvm-tools component is installed.",
         )?;
 
         if !opt_output.status.success() {
@@ -149,7 +149,7 @@ fn compile(&mut self) -> anyhow::Result<()> {
             .arg(&self.opt_path)
             .arg("-o").arg(&self.out_path)
             .output()
-            .context("An error occured when calling llc. Make sure the llvm-tools component is installed.")?;
+            .context("An error occurred when calling llc. Make sure the llvm-tools component is installed.")?;
 
         if !lcc_output.status.success() {
             tracing::error!(

src/tools/miri/genmc-sys/cpp/include/MiriInterface.hpp

@@ -79,7 +79,7 @@ struct MiriGenmcShim : private GenMCDriver {
     void handle_execution_start();
     // This function must be called at the end of any execution, even if an error was found
     // during the execution.
-    // Returns `null`, or a string containing an error message if an error occured.
+    // Returns `null`, or a string containing an error message if an error occurred.
     std::unique_ptr<std::string> handle_execution_end();
 
     /***** Functions for handling events encountered during program execution. *****/

src/tools/miri/genmc-sys/src/lib.rs

@@ -379,7 +379,7 @@ unsafe fn create_handle(
         /// This function must be called at the start of any execution, before any events are reported to GenMC.
         fn handle_execution_start(self: Pin<&mut MiriGenmcShim>);
         /// This function must be called at the end of any execution, even if an error was found during the execution.
-        /// Returns `null`, or a string containing an error message if an error occured.
+        /// Returns `null`, or a string containing an error message if an error occurred.
         fn handle_execution_end(self: Pin<&mut MiriGenmcShim>) -> UniquePtr<CxxString>;
 
         /***** Functions for handling events encountered during program execution. *****/

src/tools/miri/src/concurrency/genmc/mod.rs

@@ -220,7 +220,7 @@ fn prepare_next_execution(&self) {
     /// Don't call this function if an error was found.
     ///
     /// GenMC detects certain errors only when the execution ends.
-    /// If an error occured, a string containing a short error description is returned.
+    /// If an error occurred, a string containing a short error description is returned.
     ///
     /// GenMC currently doesn't return an error in all cases immediately when one happens.
     /// This function will also check for those, and return their error description.

src/tools/tidy/src/diagnostics.rs

@@ -213,7 +213,7 @@ pub fn verbose_msg<T: Display>(&mut self, msg: T) {
         }
     }
 
-    /// Has an error already occured for this check?
+    /// Has an error already occurred for this check?
     pub fn is_bad(&self) -> bool {
         self.bad
     }

tests/rustdoc-html/intra-doc/deps.rs

@@ -6,7 +6,7 @@
 //@ compile-flags: --extern-html-root-url=empty=https://empty.example/
 // This one is to ensure that we don't link to any item we see which has
 // an external html root URL unless it actually exists.
-//@ compile-flags: --extern-html-root-url=non_existant=https://non-existant.example/
+//@ compile-flags: --extern-html-root-url=non_existent=https://non-existent.example/
 //@ aux-build: empty.rs
 
 #![crate_name = "foo"]
@@ -14,10 +14,10 @@
 
 //@ has 'foo/index.html'
 //@ has - '//a[@href="https://empty.example/empty/index.html"]' 'empty'
-// There should only be one intra doc links, we should not link `non_existant`.
+// There should only be one intra doc links, we should not link `non_existent`.
 //@ count - '//*[@class="docblock"]//a' 1
 //! [`empty`]
 //!
-//! [`non_existant`]
+//! [`non_existent`]
 
 extern crate empty;