4 files changed, 15 insertions, 8 deletions
diff --git a/src/librustdoc/clean/types.rs b/src/librustdoc/clean/types.rs
index 9050a1c1207..6aa3da2719a 100644
--- a/src/librustdoc/clean/types.rs
+++ b/src/librustdoc/clean/types.rs
@@ -1286,7 +1286,7 @@ impl GenericBound {
     }
 }
 
-#[derive(Clone, PartialEq, Eq, Debug, Hash)]
+#[derive(Clone, Copy, PartialEq, Eq, Debug, Hash)]
 pub(crate) struct Lifetime(pub Symbol);
 
 impl Lifetime {
diff --git a/src/librustdoc/json/conversions.rs b/src/librustdoc/json/conversions.rs
index b965ab019cc..5111e363c52 100644
--- a/src/librustdoc/json/conversions.rs
+++ b/src/librustdoc/json/conversions.rs
@@ -10,6 +10,7 @@ use rustc_ast::ast;
 use rustc_attr::DeprecatedSince;
 use rustc_hir::{def::CtorKind, def::DefKind, def_id::DefId};
 use rustc_metadata::rendered_const;
+use rustc_middle::bug;
 use rustc_middle::ty::{self, TyCtxt};
 use rustc_span::symbol::sym;
 use rustc_span::{Pos, Symbol};
@@ -512,9 +513,15 @@ impl FromWithTcx<clean::WherePredicate> for WherePredicate {
                     })
                     .collect(),
             },
-            RegionPredicate { lifetime, bounds } => WherePredicate::RegionPredicate {
+            RegionPredicate { lifetime, bounds } => WherePredicate::LifetimePredicate {
                 lifetime: convert_lifetime(lifetime),
-                bounds: bounds.into_tcx(tcx),
+                outlives: bounds
+                    .iter()
+                    .map(|bound| match bound {
+                        clean::GenericBound::Outlives(lt) => convert_lifetime(*lt),
+                        _ => bug!("found non-outlives-bound on lifetime predicate"),
+                    })
+                    .collect(),
             },
             EqPredicate { lhs, rhs } => {
                 WherePredicate::EqPredicate { lhs: lhs.into_tcx(tcx), rhs: rhs.into_tcx(tcx) }
diff --git a/src/rustdoc-json-types/lib.rs b/src/rustdoc-json-types/lib.rs
index 68030493e9c..89115d4d7d6 100644
--- a/src/rustdoc-json-types/lib.rs
+++ b/src/rustdoc-json-types/lib.rs
@@ -8,7 +8,7 @@ use serde::{Deserialize, Serialize};
 use std::path::PathBuf;
 
 /// rustdoc format-version.
-pub const FORMAT_VERSION: u32 = 30;
+pub const FORMAT_VERSION: u32 = 31;
 
 /// A `Crate` is the root of the emitted JSON blob. It contains all type/documentation information
 /// about the language items in the local crate, as well as info about external items to allow
@@ -511,9 +511,9 @@ pub enum WherePredicate {
         /// ```
         generic_params: Vec<GenericParamDef>,
     },
-    RegionPredicate {
+    LifetimePredicate {
         lifetime: String,
-        bounds: Vec<GenericBound>,
+        outlives: Vec<String>,
     },
     EqPredicate {
         lhs: Type,
diff --git a/src/tools/jsondoclint/src/validator.rs b/src/tools/jsondoclint/src/validator.rs
index 1713a4d812c..cd011dce784 100644
--- a/src/tools/jsondoclint/src/validator.rs
+++ b/src/tools/jsondoclint/src/validator.rs
@@ -374,8 +374,8 @@ impl<'a> Validator<'a> {
                 bounds.iter().for_each(|b| self.check_generic_bound(b));
                 generic_params.iter().for_each(|gpd| self.check_generic_param_def(gpd));
             }
-            WherePredicate::RegionPredicate { lifetime: _, bounds } => {
-                bounds.iter().for_each(|b| self.check_generic_bound(b));
+            WherePredicate::LifetimePredicate { lifetime: _, outlives: _ } => {
+                // nop, all strings.
             }
             WherePredicate::EqPredicate { lhs, rhs } => {
                 self.check_type(lhs);