QueryContext: rename try_collect_active_jobs -> collect_active_jobs and change it's return type from Option<QueryMap> to QueryMap

As there currently always Some(...) inside

compiler/rustc_interface/src/util.rs

@@ -126,11 +126,8 @@ pub(crate) fn run_in_thread_pool_with_globals<F: FnOnce() -> R + Send, R: Send>(
         .deadlock_handler(|| {
             // On deadlock, creates a new thread and forwards information in thread
             // locals to it. The new thread runs the deadlock handler.
-            let query_map = FromDyn::from(tls::with(|tcx| {
-                QueryCtxt::new(tcx)
-                    .try_collect_active_jobs()
-                    .expect("active jobs shouldn't be locked in deadlock handler")
-            }));
+            let query_map =
+                FromDyn::from(tls::with(|tcx| QueryCtxt::new(tcx).collect_active_jobs()));
             let registry = rayon_core::Registry::current();
             thread::spawn(move || deadlock(query_map.into_inner(), &registry));
         });

compiler/rustc_query_impl/src/plumbing.rs

@@ -80,14 +80,14 @@ fn current_query_job(self) -> Option<QueryJobId> {
         tls::with_related_context(self.tcx, |icx| icx.query)
     }
 
-    fn try_collect_active_jobs(self) -> Option<QueryMap> {
+    fn collect_active_jobs(self) -> QueryMap {
         let mut jobs = QueryMap::default();
 
         for collect in super::TRY_COLLECT_ACTIVE_JOBS.iter() {
             collect(self.tcx, &mut jobs);
         }
 
-        Some(jobs)
+        jobs
     }
 
     // Interactions with on_disk_cache
@@ -155,11 +155,11 @@ fn start_query<R>(
     fn depth_limit_error(self, job: QueryJobId) {
         let mut span = None;
         let mut layout_of_depth = None;
-        if let Some(map) = self.try_collect_active_jobs() {
-            if let Some((info, depth)) = job.try_find_layout_root(map, dep_kinds::layout_of) {
-                span = Some(info.job.span);
-                layout_of_depth = Some(LayoutOfDepth { desc: info.query.description, depth });
-            }
+        if let Some((info, depth)) =
+            job.try_find_layout_root(self.collect_active_jobs(), dep_kinds::layout_of)
+        {
+            span = Some(info.job.span);
+            layout_of_depth = Some(LayoutOfDepth { desc: info.query.description, depth });
         }
 
         let suggested_limit = match self.recursion_limit() {

compiler/rustc_query_system/src/query/job.rs

@@ -620,13 +620,13 @@ pub fn print_query_stack<Qcx: QueryContext>(
     // state if it was responsible for triggering the panic.
     let mut count_printed = 0;
     let mut count_total = 0;
-    let query_map = qcx.try_collect_active_jobs();
+    let query_map = qcx.collect_active_jobs();
 
     if let Some(ref mut file) = file {
         let _ = writeln!(file, "\n\nquery stack during panic:");
     }
     while let Some(query) = current_query {
-        let Some(query_info) = query_map.as_ref().and_then(|map| map.get(&query)) else {
+        let Some(query_info) = query_map.get(&query) else {
             break;
         };
         if Some(count_printed) < num_frames || num_frames.is_none() {

compiler/rustc_query_system/src/query/mod.rs

@@ -106,7 +106,7 @@ pub trait QueryContext: HasDepContext {
     /// Get the query information from the TLS context.
     fn current_query_job(self) -> Option<QueryJobId>;
 
-    fn try_collect_active_jobs(self) -> Option<QueryMap>;
+    fn collect_active_jobs(self) -> QueryMap;
 
     /// Load side effects associated to the node in the previous session.
     fn load_side_effects(self, prev_dep_node_index: SerializedDepNodeIndex) -> QuerySideEffects;

compiler/rustc_query_system/src/query/plumbing.rs

@@ -242,11 +242,8 @@ fn cycle_error<Q, Qcx>(
     Q: QueryConfig<Qcx>,
     Qcx: QueryContext,
 {
-    let error = try_execute.find_cycle_in_stack(
-        qcx.try_collect_active_jobs().unwrap(),
-        &qcx.current_query_job(),
-        span,
-    );
+    let error =
+        try_execute.find_cycle_in_stack(qcx.collect_active_jobs(), &qcx.current_query_job(), span);
     (mk_cycle(query, qcx, error), None)
 }