rustc: don't just show raw DefIndex's in BrNamed's fmt::Debug impl.

src/librustc/ty/structural_impls.rs

@@ -3,6 +3,7 @@
 //! hand, though we've recently added some macros and proc-macros to help with the tedium.
 
 use crate::hir::def::Namespace;
+use crate::hir::def_id::CRATE_DEF_INDEX;
 use crate::mir::ProjectionKind;
 use crate::mir::interpret;
 use crate::ty::{self, Lift, Ty, TyCtxt, InferConst};
@@ -95,8 +96,11 @@ impl fmt::Debug for ty::BoundRegion {
         match *self {
             ty::BrAnon(n) => write!(f, "BrAnon({:?})", n),
             ty::BrNamed(did, name) => {
-                write!(f, "BrNamed({:?}:{:?}, {})",
-                        did.krate, did.index, name)
+                if did.index == CRATE_DEF_INDEX {
+                    write!(f, "BrNamed({})", name)
+                } else {
+                    write!(f, "BrNamed({:?}, {})", did, name)
+                }
             }
             ty::BrEnv => write!(f, "BrEnv"),
         }

src/test/ui/nll/closure-requirements/escape-argument-callee.stderr

@@ -6,7 +6,7 @@ LL |         let mut closure = expect_sig(|p, y| *p = y);
    |
    = note: defining type: DefId(0:4 ~ escape_argument_callee[317d]::test[0]::{{closure}}[0]) with closure substs [
                i16,
-               for<'r, 's, 't0> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) mut &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) i32, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't0)) i32)),
+               for<'r, 's, 't0> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed('r)) mut &ReLateBound(DebruijnIndex(0), BrNamed('s)) i32, &ReLateBound(DebruijnIndex(0), BrNamed('t0)) i32)),
            ]
 
 error: lifetime may not live long enough

src/test/ui/nll/closure-requirements/escape-argument.stderr

@@ -6,7 +6,7 @@ LL |         let mut closure = expect_sig(|p, y| *p = y);
    |
    = note: defining type: DefId(0:4 ~ escape_argument[317d]::test[0]::{{closure}}[0]) with closure substs [
                i16,
-               for<'r, 's> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) mut &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) i32, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) i32)),
+               for<'r, 's> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed('r)) mut &ReLateBound(DebruijnIndex(0), BrNamed('s)) i32, &ReLateBound(DebruijnIndex(0), BrNamed('s)) i32)),
            ]
 
 note: No external requirements

src/test/ui/nll/closure-requirements/propagate-approximated-fail-no-postdom.stderr

@@ -10,7 +10,7 @@ LL | |         },
    |
    = note: defining type: DefId(0:18 ~ propagate_approximated_fail_no_postdom[317d]::supply[0]::{{closure}}[0]) with closure substs [
                i16,
-               for<'r, 's> extern "rust-call" fn((std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) u32>, std::cell::Cell<&'_#2r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) &'_#3r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) u32>)),
+               for<'r, 's> extern "rust-call" fn((std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed('r)) u32>, std::cell::Cell<&'_#2r &ReLateBound(DebruijnIndex(0), BrNamed('r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) &'_#3r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) u32>)),
            ]
    = note: late-bound region is '_#4r
    = note: late-bound region is '_#5r

src/test/ui/nll/closure-requirements/propagate-approximated-ref.stderr

@@ -11,7 +11,7 @@ LL | |     });
    |
    = note: defining type: DefId(0:16 ~ propagate_approximated_ref[317d]::supply[0]::{{closure}}[0]) with closure substs [
                i16,
-               for<'r, 's, 't0, 't1, 't2, 't3> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't0)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't1)) &'_#2r u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't2)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't3)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't1)) u32>)),
+               for<'r, 's, 't0, 't1, 't2, 't3> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed('r)) std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed('s)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t0)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('t1)) &'_#2r u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t2)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t3)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('t1)) u32>)),
            ]
    = note: late-bound region is '_#3r
    = note: late-bound region is '_#4r

src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-comparing-against-free.stderr

@@ -10,7 +10,7 @@ LL | |     })
    |
    = note: defining type: DefId(0:9 ~ propagate_approximated_shorter_to_static_comparing_against_free[317d]::case1[0]::{{closure}}[0]) with closure substs [
                i32,
-               for<'r> extern "rust-call" fn((std::cell::Cell<&'_#1r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) u32>)),
+               for<'r> extern "rust-call" fn((std::cell::Cell<&'_#1r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('r)) u32>)),
            ]
 
 error[E0521]: borrowed data escapes outside of closure
@@ -48,7 +48,7 @@ LL | |     })
    |
    = note: defining type: DefId(0:11 ~ propagate_approximated_shorter_to_static_comparing_against_free[317d]::case2[0]::{{closure}}[0]) with closure substs [
                i32,
-               for<'r> extern "rust-call" fn((std::cell::Cell<&'_#1r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) u32>)),
+               for<'r> extern "rust-call" fn((std::cell::Cell<&'_#1r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('r)) u32>)),
            ]
    = note: number of external vids: 2
    = note: where '_#1r: '_#0r

src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-no-bound.stderr

@@ -12,7 +12,7 @@ LL | |     });
    |
    = note: defining type: DefId(0:16 ~ propagate_approximated_shorter_to_static_no_bound[317d]::supply[0]::{{closure}}[0]) with closure substs [
                i16,
-               for<'r, 's, 't0, 't1, 't2> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't0)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't1)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't2)) u32>)),
+               for<'r, 's, 't0, 't1, 't2> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed('r)) std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed('s)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t0)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t1)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('t2)) u32>)),
            ]
    = note: late-bound region is '_#2r
    = note: late-bound region is '_#3r

src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-wrong-bound.stderr

@@ -12,7 +12,7 @@ LL | |     });
    |
    = note: defining type: DefId(0:16 ~ propagate_approximated_shorter_to_static_wrong_bound[317d]::supply[0]::{{closure}}[0]) with closure substs [
                i16,
-               for<'r, 's, 't0, 't1, 't2, 't3> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't0)) std::cell::Cell<&'_#2r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't1)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't2)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't3)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't1)) u32>)),
+               for<'r, 's, 't0, 't1, 't2, 't3> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed('r)) std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed('s)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t0)) std::cell::Cell<&'_#2r &ReLateBound(DebruijnIndex(0), BrNamed('t1)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t2)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t3)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('t1)) u32>)),
            ]
    = note: late-bound region is '_#3r
    = note: late-bound region is '_#4r

src/test/ui/nll/closure-requirements/propagate-approximated-val.stderr

@@ -11,7 +11,7 @@ LL | |     });
    |
    = note: defining type: DefId(0:16 ~ propagate_approximated_val[317d]::test[0]::{{closure}}[0]) with closure substs [
                i16,
-               for<'r, 's> extern "rust-call" fn((std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) &'_#2r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) u32>)),
+               for<'r, 's> extern "rust-call" fn((std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed('r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) &'_#2r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) u32>)),
            ]
    = note: late-bound region is '_#3r
    = note: late-bound region is '_#4r

src/test/ui/nll/closure-requirements/propagate-despite-same-free-region.stderr

@@ -10,7 +10,7 @@ LL | |         },
    |
    = note: defining type: DefId(0:14 ~ propagate_despite_same_free_region[317d]::supply[0]::{{closure}}[0]) with closure substs [
                i16,
-               for<'r, 's> extern "rust-call" fn((std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) &'_#2r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) u32>)),
+               for<'r, 's> extern "rust-call" fn((std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed('r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) &'_#2r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) u32>)),
            ]
    = note: late-bound region is '_#3r
    = note: number of external vids: 4

src/test/ui/nll/closure-requirements/propagate-fail-to-approximate-longer-no-bounds.stderr

@@ -11,7 +11,7 @@ LL | |     });
    |
    = note: defining type: DefId(0:16 ~ propagate_fail_to_approximate_longer_no_bounds[317d]::supply[0]::{{closure}}[0]) with closure substs [
                i16,
-               for<'r, 's, 't0, 't1, 't2> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) &'_#1r u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't0)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't1)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't2)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) u32>)),
+               for<'r, 's, 't0, 't1, 't2> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed('r)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) &'_#1r u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t0)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('t1)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t2)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) u32>)),
            ]
    = note: late-bound region is '_#2r
    = note: late-bound region is '_#3r

src/test/ui/nll/closure-requirements/propagate-fail-to-approximate-longer-wrong-bounds.stderr

@@ -11,7 +11,7 @@ LL | |     });
    |
    = note: defining type: DefId(0:16 ~ propagate_fail_to_approximate_longer_wrong_bounds[317d]::supply[0]::{{closure}}[0]) with closure substs [
                i16,
-               for<'r, 's, 't0, 't1, 't2, 't3> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) &'_#1r u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't0)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't1)) &'_#2r u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't2)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't3)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't1)) u32>)),
+               for<'r, 's, 't0, 't1, 't2, 't3> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed('r)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) &'_#1r u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t0)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('t1)) &'_#2r u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t2)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t3)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('t1)) u32>)),
            ]
    = note: late-bound region is '_#3r
    = note: late-bound region is '_#4r

src/test/ui/nll/closure-requirements/return-wrong-bound-region.stderr

@@ -6,7 +6,7 @@ LL |     expect_sig(|a, b| b); // ought to return `a`
    |
    = note: defining type: DefId(0:4 ~ return_wrong_bound_region[317d]::test[0]::{{closure}}[0]) with closure substs [
                i16,
-               for<'r, 's> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) i32, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) i32)) -> &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) i32,
+               for<'r, 's> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed('r)) i32, &ReLateBound(DebruijnIndex(0), BrNamed('s)) i32)) -> &ReLateBound(DebruijnIndex(0), BrNamed('r)) i32,
            ]
 
 error: lifetime may not live long enough

src/test/ui/nll/ty-outlives/projection-one-region-closure.stderr

@@ -38,7 +38,7 @@ error[E0309]: the parameter type `T` may not live long enough
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = help: consider adding an explicit lifetime bound `T: ReFree(DefId(0:15 ~ projection_one_region_closure[317d]::no_relationships_late[0]), BrNamed(crate0:DefIndex(16), 'a))`...
+   = help: consider adding an explicit lifetime bound `T: ReFree(DefId(0:15 ~ projection_one_region_closure[317d]::no_relationships_late[0]), BrNamed(DefId(0:16 ~ projection_one_region_closure[317d]::no_relationships_late[0]::'a[0]), 'a))`...
 
 error: lifetime may not live long enough
   --> $DIR/projection-one-region-closure.rs:45:39

src/test/ui/nll/ty-outlives/projection-two-region-trait-bound-closure.stderr

@@ -39,7 +39,7 @@ error[E0309]: the associated type `<T as Anything<'_#5r, '_#6r>>::AssocType` may
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = help: consider adding an explicit lifetime bound `<T as Anything<'_#5r, '_#6r>>::AssocType: ReFree(DefId(0:17 ~ projection_two_region_trait_bound_closure[317d]::no_relationships_late[0]), BrNamed(crate0:DefIndex(18), 'a))`...
+   = help: consider adding an explicit lifetime bound `<T as Anything<'_#5r, '_#6r>>::AssocType: ReFree(DefId(0:17 ~ projection_two_region_trait_bound_closure[317d]::no_relationships_late[0]), BrNamed(DefId(0:18 ~ projection_two_region_trait_bound_closure[317d]::no_relationships_late[0]::'a[0]), 'a))`...
 
 note: External requirements
   --> $DIR/projection-two-region-trait-bound-closure.rs:48:29

src/test/ui/nll/ty-outlives/ty-param-closure-approximate-lower-bound.stderr

@@ -7,7 +7,7 @@ LL |     twice(cell, value, |a, b| invoke(a, b));
    = note: defining type: DefId(0:11 ~ ty_param_closure_approximate_lower_bound[317d]::generic[0]::{{closure}}[0]) with closure substs [
                T,
                i16,
-               for<'r, 's> extern "rust-call" fn((std::option::Option<std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) ()>>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) T)),
+               for<'r, 's> extern "rust-call" fn((std::option::Option<std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed('r)) ()>>, &ReLateBound(DebruijnIndex(0), BrNamed('s)) T)),
            ]
    = note: number of external vids: 2
    = note: where T: '_#1r
@@ -34,7 +34,7 @@ LL |     twice(cell, value, |a, b| invoke(a, b));
    = note: defining type: DefId(0:15 ~ ty_param_closure_approximate_lower_bound[317d]::generic_fail[0]::{{closure}}[0]) with closure substs [
                T,
                i16,
-               for<'r, 's> extern "rust-call" fn((std::option::Option<std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) ()>>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) T)),
+               for<'r, 's> extern "rust-call" fn((std::option::Option<std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed('r)) ()>>, &ReLateBound(DebruijnIndex(0), BrNamed('s)) T)),
            ]
    = note: late-bound region is '_#2r
    = note: number of external vids: 3
@@ -59,7 +59,7 @@ error[E0309]: the parameter type `T` may not live long enough
 LL |     twice(cell, value, |a, b| invoke(a, b));
    |                        ^^^^^^^^^^^^^^^^^^^
    |
-   = help: consider adding an explicit lifetime bound `T: ReFree(DefId(0:12 ~ ty_param_closure_approximate_lower_bound[317d]::generic_fail[0]), BrNamed(crate0:DefIndex(13), 'a))`...
+   = help: consider adding an explicit lifetime bound `T: ReFree(DefId(0:12 ~ ty_param_closure_approximate_lower_bound[317d]::generic_fail[0]), BrNamed(DefId(0:13 ~ ty_param_closure_approximate_lower_bound[317d]::generic_fail[0]::'a[0]), 'a))`...
 
 error: aborting due to previous error
 

src/test/ui/nll/ty-outlives/ty-param-closure-outlives-from-where-clause.stderr

@@ -49,7 +49,7 @@ LL | |         require(&x, &y)
 LL | |     })
    | |_____^
    |
-   = help: consider adding an explicit lifetime bound `T: ReFree(DefId(0:11 ~ ty_param_closure_outlives_from_where_clause[317d]::no_region[0]), BrNamed(crate0:DefIndex(12), 'a))`...
+   = help: consider adding an explicit lifetime bound `T: ReFree(DefId(0:11 ~ ty_param_closure_outlives_from_where_clause[317d]::no_region[0]), BrNamed(DefId(0:12 ~ ty_param_closure_outlives_from_where_clause[317d]::no_region[0]::'a[0]), 'a))`...
 
 note: External requirements
   --> $DIR/ty-param-closure-outlives-from-where-clause.rs:43:26
@@ -139,7 +139,7 @@ LL | |         require(&x, &y)
 LL | |     })
    | |_____^
    |
-   = help: consider adding an explicit lifetime bound `T: ReFree(DefId(0:19 ~ ty_param_closure_outlives_from_where_clause[317d]::wrong_region[0]), BrNamed(crate0:DefIndex(20), 'a))`...
+   = help: consider adding an explicit lifetime bound `T: ReFree(DefId(0:19 ~ ty_param_closure_outlives_from_where_clause[317d]::wrong_region[0]), BrNamed(DefId(0:20 ~ ty_param_closure_outlives_from_where_clause[317d]::wrong_region[0]::'a[0]), 'a))`...
 
 note: External requirements
   --> $DIR/ty-param-closure-outlives-from-where-clause.rs:77:26