error[E0308]: mismatched types
  --> $DIR/variance-btree-invariant-types.rs:4:5
   |
LL |     v
   |     ^ lifetime mismatch
   |
   = note: expected struct `std::collections::btree_map::IterMut<'_, &'new (), _>`
              found struct `std::collections::btree_map::IterMut<'_, &'static (), _>`
note: the lifetime `'new` as defined here...
  --> $DIR/variance-btree-invariant-types.rs:3:21
   |
LL | fn iter_cov_key<'a, 'new>(v: IterMut<'a, &'static (), ()>) -> IterMut<'a, &'new (), ()> {
   |                     ^^^^
   = note: ...does not necessarily outlive the static lifetime

error[E0308]: mismatched types
  --> $DIR/variance-btree-invariant-types.rs:7:5
   |
LL |     v
   |     ^ lifetime mismatch
   |
   = note: expected struct `std::collections::btree_map::IterMut<'_, _, &'new ()>`
              found struct `std::collections::btree_map::IterMut<'_, _, &'static ()>`
note: the lifetime `'new` as defined here...
  --> $DIR/variance-btree-invariant-types.rs:6:21
   |
LL | fn iter_cov_val<'a, 'new>(v: IterMut<'a, (), &'static ()>) -> IterMut<'a, (), &'new ()> {
   |                     ^^^^
   = note: ...does not necessarily outlive the static lifetime

error[E0308]: mismatched types
  --> $DIR/variance-btree-invariant-types.rs:10:5
   |
LL |     v
   |     ^ lifetime mismatch
   |
   = note: expected struct `std::collections::btree_map::IterMut<'_, &'static (), _>`
              found struct `std::collections::btree_map::IterMut<'_, &'new (), _>`
note: the lifetime `'new` as defined here...
  --> $DIR/variance-btree-invariant-types.rs:9:24
   |
LL | fn iter_contra_key<'a, 'new>(v: IterMut<'a, &'new (), ()>) -> IterMut<'a, &'static (), ()> {
   |                        ^^^^
   = note: ...does not necessarily outlive the static lifetime

error[E0308]: mismatched types
  --> $DIR/variance-btree-invariant-types.rs:13:5
   |
LL |     v
   |     ^ lifetime mismatch
   |
   = note: expected struct `std::collections::btree_map::IterMut<'_, _, &'static ()>`
              found struct `std::collections::btree_map::IterMut<'_, _, &'new ()>`
note: the lifetime `'new` as defined here...
  --> $DIR/variance-btree-invariant-types.rs:12:24
   |
LL | fn iter_contra_val<'a, 'new>(v: IterMut<'a, (), &'new ()>) -> IterMut<'a, (), &'static ()> {
   |                        ^^^^
   = note: ...does not necessarily outlive the static lifetime

error[E0308]: mismatched types
  --> $DIR/variance-btree-invariant-types.rs:17:5
   |
LL |     v
   |     ^ lifetime mismatch
   |
   = note: expected struct `RangeMut<'_, &'new (), _>`
              found struct `RangeMut<'_, &'static (), _>`
note: the lifetime `'new` as defined here...
  --> $DIR/variance-btree-invariant-types.rs:16:22
   |
LL | fn range_cov_key<'a, 'new>(v: RangeMut<'a, &'static (), ()>) -> RangeMut<'a, &'new (), ()> {
   |                      ^^^^
   = note: ...does not necessarily outlive the static lifetime

error[E0308]: mismatched types
  --> $DIR/variance-btree-invariant-types.rs:20:5
   |
LL |     v
   |     ^ lifetime mismatch
   |
   = note: expected struct `RangeMut<'_, _, &'new ()>`
              found struct `RangeMut<'_, _, &'static ()>`
note: the lifetime `'new` as defined here...
  --> $DIR/variance-btree-invariant-types.rs:19:22
   |
LL | fn range_cov_val<'a, 'new>(v: RangeMut<'a, (), &'static ()>) -> RangeMut<'a, (), &'new ()> {
   |                      ^^^^
   = note: ...does not necessarily outlive the static lifetime

error[E0308]: mismatched types
  --> $DIR/variance-btree-invariant-types.rs:23:5
   |
LL |     v
   |     ^ lifetime mismatch
   |
   = note: expected struct `RangeMut<'_, &'static (), _>`
              found struct `RangeMut<'_, &'new (), _>`
note: the lifetime `'new` as defined here...
  --> $DIR/variance-btree-invariant-types.rs:22:25
   |
LL | fn range_contra_key<'a, 'new>(v: RangeMut<'a, &'new (), ()>) -> RangeMut<'a, &'static (), ()> {
   |                         ^^^^
   = note: ...does not necessarily outlive the static lifetime

error[E0308]: mismatched types
  --> $DIR/variance-btree-invariant-types.rs:26:5
   |
LL |     v
   |     ^ lifetime mismatch
   |
   = note: expected struct `RangeMut<'_, _, &'static ()>`
              found struct `RangeMut<'_, _, &'new ()>`
note: the lifetime `'new` as defined here...
  --> $DIR/variance-btree-invariant-types.rs:25:25
   |
LL | fn range_contra_val<'a, 'new>(v: RangeMut<'a, (), &'new ()>) -> RangeMut<'a, (), &'static ()> {
   |                         ^^^^
   = note: ...does not necessarily outlive the static lifetime

error[E0308]: mismatched types
  --> $DIR/variance-btree-invariant-types.rs:31:5
   |
LL |     v
   |     ^ lifetime mismatch
   |
   = note: expected struct `std::collections::btree_map::OccupiedEntry<'_, &'new (), _>`
              found struct `std::collections::btree_map::OccupiedEntry<'_, &'static (), _>`
note: the lifetime `'new` as defined here...
  --> $DIR/variance-btree-invariant-types.rs:29:20
   |
LL | fn occ_cov_key<'a, 'new>(v: OccupiedEntry<'a, &'static (), ()>)
   |                    ^^^^
   = note: ...does not necessarily outlive the static lifetime

error[E0308]: mismatched types
  --> $DIR/variance-btree-invariant-types.rs:35:5
   |
LL |     v
   |     ^ lifetime mismatch
   |
   = note: expected struct `std::collections::btree_map::OccupiedEntry<'_, _, &'new ()>`
              found struct `std::collections::btree_map::OccupiedEntry<'_, _, &'static ()>`
note: the lifetime `'new` as defined here...
  --> $DIR/variance-btree-invariant-types.rs:33:20
   |
LL | fn occ_cov_val<'a, 'new>(v: OccupiedEntry<'a, (), &'static ()>)
   |                    ^^^^
   = note: ...does not necessarily outlive the static lifetime

error[E0308]: mismatched types
  --> $DIR/variance-btree-invariant-types.rs:39:5
   |
LL |     v
   |     ^ lifetime mismatch
   |
   = note: expected struct `std::collections::btree_map::OccupiedEntry<'_, &'static (), _>`
              found struct `std::collections::btree_map::OccupiedEntry<'_, &'new (), _>`
note: the lifetime `'new` as defined here...
  --> $DIR/variance-btree-invariant-types.rs:37:23
   |
LL | fn occ_contra_key<'a, 'new>(v: OccupiedEntry<'a, &'new (), ()>)
   |                       ^^^^
   = note: ...does not necessarily outlive the static lifetime

error[E0308]: mismatched types
  --> $DIR/variance-btree-invariant-types.rs:43:5
   |
LL |     v
   |     ^ lifetime mismatch
   |
   = note: expected struct `std::collections::btree_map::OccupiedEntry<'_, _, &'static ()>`
              found struct `std::collections::btree_map::OccupiedEntry<'_, _, &'new ()>`
note: the lifetime `'new` as defined here...
  --> $DIR/variance-btree-invariant-types.rs:41:23
   |
LL | fn occ_contra_val<'a, 'new>(v: OccupiedEntry<'a, (), &'new ()>)
   |                       ^^^^
   = note: ...does not necessarily outlive the static lifetime

error[E0308]: mismatched types
  --> $DIR/variance-btree-invariant-types.rs:48:5
   |
LL |     v
   |     ^ lifetime mismatch
   |
   = note: expected struct `std::collections::btree_map::VacantEntry<'_, &'new (), _>`
              found struct `std::collections::btree_map::VacantEntry<'_, &'static (), _>`
note: the lifetime `'new` as defined here...
  --> $DIR/variance-btree-invariant-types.rs:46:20
   |
LL | fn vac_cov_key<'a, 'new>(v: VacantEntry<'a, &'static (), ()>)
   |                    ^^^^
   = note: ...does not necessarily outlive the static lifetime

error[E0308]: mismatched types
  --> $DIR/variance-btree-invariant-types.rs:52:5
   |
LL |     v
   |     ^ lifetime mismatch
   |
   = note: expected struct `std::collections::btree_map::VacantEntry<'_, _, &'new ()>`
              found struct `std::collections::btree_map::VacantEntry<'_, _, &'static ()>`
note: the lifetime `'new` as defined here...
  --> $DIR/variance-btree-invariant-types.rs:50:20
   |
LL | fn vac_cov_val<'a, 'new>(v: VacantEntry<'a, (), &'static ()>)
   |                    ^^^^
   = note: ...does not necessarily outlive the static lifetime

error[E0308]: mismatched types
  --> $DIR/variance-btree-invariant-types.rs:56:5
   |
LL |     v
   |     ^ lifetime mismatch
   |
   = note: expected struct `std::collections::btree_map::VacantEntry<'_, &'static (), _>`
              found struct `std::collections::btree_map::VacantEntry<'_, &'new (), _>`
note: the lifetime `'new` as defined here...
  --> $DIR/variance-btree-invariant-types.rs:54:23
   |
LL | fn vac_contra_key<'a, 'new>(v: VacantEntry<'a, &'new (), ()>)
   |                       ^^^^
   = note: ...does not necessarily outlive the static lifetime

error[E0308]: mismatched types
  --> $DIR/variance-btree-invariant-types.rs:60:5
   |
LL |     v
   |     ^ lifetime mismatch
   |
   = note: expected struct `std::collections::btree_map::VacantEntry<'_, _, &'static ()>`
              found struct `std::collections::btree_map::VacantEntry<'_, _, &'new ()>`
note: the lifetime `'new` as defined here...
  --> $DIR/variance-btree-invariant-types.rs:58:23
   |
LL | fn vac_contra_val<'a, 'new>(v: VacantEntry<'a, (), &'new ()>)
   |                       ^^^^
   = note: ...does not necessarily outlive the static lifetime

error: aborting due to 16 previous errors

For more information about this error, try `rustc --explain E0308`.