Rename `debugging_opts` to `unstable_opts`

This is no longer used only for debugging options (e.g. `-Zoutput-width`, `-Zallow-features`).
Rename it to be more clear.

3 files changed, 3 insertions, 3 deletions

diff --git a/compiler/rustc_trait_selection/src/traits/engine.rs b/compiler/rustc_trait_selection/src/traits/engine.rs
index 4d477886979..348397cea67 100644
--- a/compiler/rustc_trait_selection/src/traits/engine.rs
+++ b/compiler/rustc_trait_selection/src/traits/engine.rs
@@ -9,7 +9,7 @@ pub trait TraitEngineExt<'tcx> {
 
 impl<'tcx> TraitEngineExt<'tcx> for dyn TraitEngine<'tcx> {
     fn new(tcx: TyCtxt<'tcx>) -> Box<Self> {
-        if tcx.sess.opts.debugging_opts.chalk {
+        if tcx.sess.opts.unstable_opts.chalk {
             Box::new(ChalkFulfillmentContext::new())
         } else {
             Box::new(FulfillmentContext::new())
diff --git a/compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs b/compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs
index 8d7c6b26ba1..379fc54349a 100644
--- a/compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs
+++ b/compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs
@@ -884,7 +884,7 @@ impl<'a, 'tcx> InferCtxtExt<'tcx> for InferCtxt<'a, 'tcx> {
                     }
 
                     ty::PredicateKind::WellFormed(ty) => {
-                        if !self.tcx.sess.opts.debugging_opts.chalk {
+                        if !self.tcx.sess.opts.unstable_opts.chalk {
                             // WF predicates cannot themselves make
                             // errors. They can only block due to
                             // ambiguity; otherwise, they always
diff --git a/compiler/rustc_trait_selection/src/traits/select/confirmation.rs b/compiler/rustc_trait_selection/src/traits/select/confirmation.rs
index 4862631980e..da8ca6e5749 100644
--- a/compiler/rustc_trait_selection/src/traits/select/confirmation.rs
+++ b/compiler/rustc_trait_selection/src/traits/select/confirmation.rs
@@ -683,7 +683,7 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
 
         // FIXME: Chalk
 
-        if !self.tcx().sess.opts.debugging_opts.chalk {
+        if !self.tcx().sess.opts.unstable_opts.chalk {
             nested.push(Obligation::new(
                 obligation.cause.clone(),
                 obligation.param_env,