print less info to stabilize tests

Author: nikomatsakis

src/librustc_mir/borrow_check/nll/universal_regions.rs

@@ -327,11 +327,15 @@ impl<'tcx> UniversalRegions<'tcx> {
                     &substs.substs[..]
                 ));
 
+                // FIXME: It'd be nice to print the late-bound regions
+                // here, but unfortunately these wind up stored into
+                // tests, and the resulting print-outs include def-ids
+                // and other things that are not stable across tests!
+                // So we just include the region-vid. Annoying.
                 let closure_base_def_id = tcx.closure_base_def_id(def_id);
                 for_each_late_bound_region_defined_on(tcx, closure_base_def_id, |r| {
                     err.note(&format!(
-                        "late-bound region {:?} is {:?}",
-                        r,
+                        "late-bound region is {:?}",
                         self.to_region_vid(r),
                     ));
                 });
@@ -343,11 +347,13 @@ impl<'tcx> UniversalRegions<'tcx> {
                     &substs.substs[..]
                 ));
 
+                // FIXME: As above, we'd like to print out the region
+                // `r` but doing so is not stable across architectures
+                // and so forth.
                 let closure_base_def_id = tcx.closure_base_def_id(def_id);
                 for_each_late_bound_region_defined_on(tcx, closure_base_def_id, |r| {
                     err.note(&format!(
-                        "late-bound region {:?} is {:?}",
-                        r,
+                        "late-bound region is {:?}",
                         self.to_region_vid(r),
                     ));
                 });

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

@@ -12,9 +12,9 @@ LL | |         },
                i16,
                for<'r, 's> extern "rust-call" fn((std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) u32>, std::cell::Cell<&'_#2r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) &'_#3r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) u32>))
            ]
-   = note: late-bound region ReFree(DefId(0/0:6 ~ propagate_approximated_fail_no_postdom[317d]::supply[0]), BrNamed(crate0:DefIndex(1:17), 'a)) is '_#4r
-   = note: late-bound region ReFree(DefId(0/0:6 ~ propagate_approximated_fail_no_postdom[317d]::supply[0]), BrNamed(crate0:DefIndex(1:19), 'c)) is '_#5r
-   = note: late-bound region ReFree(DefId(0/0:6 ~ propagate_approximated_fail_no_postdom[317d]::supply[0]), BrNamed(crate0:DefIndex(1:18), 'b)) is '_#6r
+   = note: late-bound region is '_#4r
+   = note: late-bound region is '_#5r
+   = note: late-bound region is '_#6r
 
 error: unsatisfied lifetime constraints
   --> $DIR/propagate-approximated-fail-no-postdom.rs:56:13

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

@@ -14,8 +14,8 @@ LL | |     });
                i16,
                for<'r, 's, 't0, 't1, 't2, 't3> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't0)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't1)) &'_#2r u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't2)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't3)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't1)) u32>))
            ]
-   = note: late-bound region ReFree(DefId(0/0:6 ~ propagate_approximated_ref[317d]::supply[0]), BrNamed(crate0:DefIndex(1:17), 'b)) is '_#3r
-   = note: late-bound region ReFree(DefId(0/0:6 ~ propagate_approximated_ref[317d]::supply[0]), BrNamed(crate0:DefIndex(1:16), 'a)) is '_#4r
+   = note: late-bound region is '_#3r
+   = note: late-bound region is '_#4r
    = note: number of external vids: 5
    = note: where '_#1r: '_#2r
 

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

@@ -15,8 +15,8 @@ LL | |     });
                i16,
                for<'r, 's, 't0, 't1, 't2> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't0)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't1)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't2)) u32>))
            ]
-   = note: late-bound region ReFree(DefId(0/0:6 ~ propagate_approximated_shorter_to_static_no_bound[317d]::supply[0]), BrNamed(crate0:DefIndex(1:16), 'a)) is '_#2r
-   = note: late-bound region ReFree(DefId(0/0:6 ~ propagate_approximated_shorter_to_static_no_bound[317d]::supply[0]), BrNamed(crate0:DefIndex(1:17), 'b)) is '_#3r
+   = note: late-bound region is '_#2r
+   = note: late-bound region is '_#3r
    = note: number of external vids: 4
    = note: where '_#1r: '_#0r
 

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

@@ -14,8 +14,8 @@ LL | |     });
                i16,
                for<'r, 's, 't0, 't1, 't2, 't3> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't0)) std::cell::Cell<&'_#2r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't1)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't2)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't3)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't1)) u32>))
            ]
-   = note: late-bound region ReFree(DefId(0/0:6 ~ propagate_approximated_shorter_to_static_wrong_bound[317d]::supply[0]), BrNamed(crate0:DefIndex(1:17), 'b)) is '_#3r
-   = note: late-bound region ReFree(DefId(0/0:6 ~ propagate_approximated_shorter_to_static_wrong_bound[317d]::supply[0]), BrNamed(crate0:DefIndex(1:16), 'a)) is '_#4r
+   = note: late-bound region is '_#3r
+   = note: late-bound region is '_#4r
    = note: number of external vids: 5
    = note: where '_#1r: '_#0r
 

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

@@ -14,8 +14,8 @@ LL | |     });
                i16,
                for<'r, 's> extern "rust-call" fn((std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) &'_#2r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) u32>))
            ]
-   = note: late-bound region ReFree(DefId(0/0:6 ~ propagate_approximated_val[317d]::test[0]), BrNamed(crate0:DefIndex(1:17), 'b)) is '_#3r
-   = note: late-bound region ReFree(DefId(0/0:6 ~ propagate_approximated_val[317d]::test[0]), BrNamed(crate0:DefIndex(1:16), 'a)) is '_#4r
+   = note: late-bound region is '_#3r
+   = note: late-bound region is '_#4r
    = note: number of external vids: 5
    = note: where '_#1r: '_#2r
 

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

@@ -12,7 +12,7 @@ LL | |         },
                i16,
                for<'r, 's> extern "rust-call" fn((std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) &'_#2r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) u32>))
            ]
-   = note: late-bound region ReFree(DefId(0/0:6 ~ propagate_despite_same_free_region[317d]::supply[0]), BrNamed(crate0:DefIndex(1:15), 'a)) is '_#3r
+   = note: late-bound region is '_#3r
    = note: number of external vids: 4
    = note: where '_#1r: '_#2r
 

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

@@ -13,8 +13,8 @@ LL | |     });
                i16,
                for<'r, 's, 't0, 't1, 't2> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) &'_#1r u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't0)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't1)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't2)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) u32>))
            ]
-   = note: late-bound region ReFree(DefId(0/0:6 ~ propagate_fail_to_approximate_longer_no_bounds[317d]::supply[0]), BrNamed(crate0:DefIndex(1:16), 'a)) is '_#2r
-   = note: late-bound region ReFree(DefId(0/0:6 ~ propagate_fail_to_approximate_longer_no_bounds[317d]::supply[0]), BrNamed(crate0:DefIndex(1:17), 'b)) is '_#3r
+   = note: late-bound region is '_#2r
+   = note: late-bound region is '_#3r
 
 error: unsatisfied lifetime constraints
   --> $DIR/propagate-fail-to-approximate-longer-no-bounds.rs:47:9

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

@@ -13,8 +13,8 @@ LL | |     });
                i16,
                for<'r, 's, 't0, 't1, 't2, 't3> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) &'_#1r u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't0)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't1)) &'_#2r u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't2)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't3)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't1)) u32>))
            ]
-   = note: late-bound region ReFree(DefId(0/0:6 ~ propagate_fail_to_approximate_longer_wrong_bounds[317d]::supply[0]), BrNamed(crate0:DefIndex(1:17), 'b)) is '_#3r
-   = note: late-bound region ReFree(DefId(0/0:6 ~ propagate_fail_to_approximate_longer_wrong_bounds[317d]::supply[0]), BrNamed(crate0:DefIndex(1:16), 'a)) is '_#4r
+   = note: late-bound region is '_#3r
+   = note: late-bound region is '_#4r
 
 error: unsatisfied lifetime constraints
   --> $DIR/propagate-fail-to-approximate-longer-wrong-bounds.rs:51:9

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

@@ -10,6 +10,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#2r ()>, T))
            ]
+   = note: late-bound region is '_#3r
    = note: number of external vids: 4
    = note: where T: '_#2r
    = note: where '_#1r: '_#2r

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

@@ -10,6 +10,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#2r ()>, T))
            ]
+   = note: late-bound region is '_#3r
    = note: number of external vids: 4
    = note: where '_#1r: '_#2r
 

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

@@ -10,8 +10,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#2r ()>, T))
            ]
-   = note: late-bound region ReFree(DefId(0/0:8 ~ projection_one_region_trait_bound_static_closure[317d]::no_relationships_late[0]), BrNamed(crate0:DefIndex(1:16), 'a)) is '_#3r
-   = note: late-bound region ReFree(DefId(0/0:8 ~ projection_one_region_trait_bound_static_closure[317d]::no_relationships_late[0]), BrNamed(crate0:DefIndex(1:18), T)) is '_#4r
+   = note: late-bound region is '_#3r
 
 note: No external requirements
   --> $DIR/projection-one-region-trait-bound-static-closure.rs:42:1
@@ -42,7 +41,6 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#3r ()>, T))
            ]
-   = note: late-bound region ReFree(DefId(0/0:9 ~ projection_one_region_trait_bound_static_closure[317d]::no_relationships_early[0]), BrNamed(crate0:DefIndex(1:22), T)) is '_#4r
 
 note: No external requirements
   --> $DIR/projection-one-region-trait-bound-static-closure.rs:50:1
@@ -75,7 +73,6 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#3r ()>, T))
            ]
-   = note: late-bound region ReFree(DefId(0/0:10 ~ projection_one_region_trait_bound_static_closure[317d]::projection_outlives[0]), BrNamed(crate0:DefIndex(1:26), T)) is '_#4r
 
 note: No external requirements
   --> $DIR/projection-one-region-trait-bound-static-closure.rs:59:1
@@ -108,7 +105,6 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#3r ()>, T))
            ]
-   = note: late-bound region ReFree(DefId(0/0:11 ~ projection_one_region_trait_bound_static_closure[317d]::elements_outlive[0]), BrNamed(crate0:DefIndex(1:30), T)) is '_#4r
 
 note: No external requirements
   --> $DIR/projection-one-region-trait-bound-static-closure.rs:78:1
@@ -140,7 +136,6 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#2r ()>, T))
            ]
-   = note: late-bound region ReFree(DefId(0/0:12 ~ projection_one_region_trait_bound_static_closure[317d]::one_region[0]), BrNamed(crate0:DefIndex(1:33), T)) is '_#3r
 
 note: No external requirements
   --> $DIR/projection-one-region-trait-bound-static-closure.rs:87:1

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

@@ -11,6 +11,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#3r ()>, T))
            ]
+   = note: late-bound region is '_#4r
    = note: number of external vids: 5
    = note: where <T as Anything<ReClosureBound('_#1r), ReClosureBound('_#2r)>>::AssocType: '_#3r
 
@@ -212,6 +213,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#2r ()>, T))
            ]
+   = note: late-bound region is '_#3r
    = note: number of external vids: 4
    = note: where <T as Anything<ReClosureBound('_#1r), ReClosureBound('_#1r)>>::AssocType: '_#2r
 

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

@@ -36,6 +36,7 @@ LL |     twice(cell, value, |a, b| invoke(a, b));
                i16,
                for<'r, 's> extern "rust-call" fn((std::option::Option<std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) ()>>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) T))
            ]
+   = note: late-bound region is '_#2r
    = note: number of external vids: 3
    = note: where T: '_#1r
 

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

@@ -16,6 +16,7 @@ LL | |     })
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#1r ()>, T))
            ]
+   = note: late-bound region is '_#2r
    = note: number of external vids: 3
    = note: where T: '_#1r
 
@@ -106,6 +107,7 @@ LL | |     })
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#2r ()>, T))
            ]
+   = note: late-bound region is '_#3r
    = note: number of external vids: 4
    = note: where T: '_#2r