fix some spelling errors in cargo_rustc

src/cargo/ops/cargo_rustc/context.rs

@@ -435,7 +435,7 @@ impl<'a, 'cfg> Context<'a, 'cfg> {
         // - OSX encodes the dylib name in the executable
         // - Windows rustc multiple files of which we can't easily link all of them
         //
-        // Two expeptions
+        // Two exceptions
         // 1) Upstream dependencies (we aren't exporting + need to resolve name conflict)
         // 2) __CARGO_DEFAULT_LIB_METADATA env var
         //

src/cargo/ops/cargo_rustc/fingerprint.rs

@@ -480,7 +480,7 @@ fn build_script_local_fingerprints<'a, 'cfg>(cx: &mut Context<'a, 'cfg>,
     // First up, if this build script is entirely overridden, then we just
     // return the hash of what we overrode it with.
     //
-    // Note that the `None` here means tha twe don't want to update the local
+    // Note that the `None` here means that we don't want to update the local
     // fingerprint afterwards because this is all just overridden.
     if let Some(output) = state.get(&(unit.pkg.package_id().clone(), unit.kind)) {
         debug!("override local fingerprints deps");

src/cargo/ops/cargo_rustc/job_queue.rs

@@ -121,7 +121,7 @@ impl<'a> JobQueue<'a> {
         // we're only sending "longer living" messages and we should also
         // destroy all references to the channel before this function exits as
         // the destructor for the `helper` object will ensure the associated
-        // thread i sno longer running.
+        // thread is no longer running.
         //
         // As a result, this `transmute` to a longer lifetime should be safe in
         // practice.