Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 579 insertions, 0 deletions

diff --git a/tests/ui/traits/alias/no-extra-traits.stderr b/tests/ui/traits/alias/no-extra-traits.stderr
new file mode 100644
index 000000000..4b1ddf684
--- /dev/null
+++ b/tests/ui/traits/alias/no-extra-traits.stderr
@@ -0,0 +1,579 @@
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:16:22
+   |
+LL | trait _0 = ObjA;
+   |            ---- first non-auto trait
+...
+LL | type _T00 = dyn _0 + ObjB;
+   |                 --   ^^^^ additional non-auto trait
+   |                 |
+   |                 trait alias used in trait object type (first use)
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjA + ObjB {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:19:24
+   |
+LL | trait _0 = ObjA;
+   |            ---- additional non-auto trait
+...
+LL | type _T01 = dyn ObjB + _0;
+   |                 ----   ^^ trait alias used in trait object type (additional use)
+   |                 |
+   |                 first non-auto trait
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjB + ObjA {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:22:24
+   |
+LL | trait _0 = ObjA;
+   |            ---- additional non-auto trait
+LL | trait _1 = _0;
+   |            -- referenced here (additional use)
+...
+LL | type _T02 = dyn ObjB + _1;
+   |                 ----   ^^ trait alias used in trait object type (additional use)
+   |                 |
+   |                 first non-auto trait
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjB + ObjA {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:25:22
+   |
+LL | trait _0 = ObjA;
+   |            ---- first non-auto trait
+LL | trait _1 = _0;
+   |            -- referenced here (first use)
+...
+LL | type _T03 = dyn _1 + ObjB;
+   |                 --   ^^^^ additional non-auto trait
+   |                 |
+   |                 trait alias used in trait object type (first use)
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjA + ObjB {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:34:22
+   |
+LL | trait _2 = ObjB;
+   |            ----
+   |            |
+   |            additional non-auto trait
+   |            first non-auto trait
+LL | trait _3 = _2;
+   |            -- referenced here (additional use)
+...
+LL | type _T10 = dyn _2 + _3;
+   |                 --   ^^ trait alias used in trait object type (additional use)
+   |                 |
+   |                 trait alias used in trait object type (first use)
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjB + ObjB {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:37:22
+   |
+LL | trait _2 = ObjB;
+   |            ----
+   |            |
+   |            additional non-auto trait
+   |            first non-auto trait
+LL | trait _3 = _2;
+   |            -- referenced here (first use)
+...
+LL | type _T11 = dyn _3 + _2;
+   |                 --   ^^ trait alias used in trait object type (additional use)
+   |                 |
+   |                 trait alias used in trait object type (first use)
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjB + ObjB {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:40:22
+   |
+LL | trait _2 = ObjB;
+   |            ----
+   |            |
+   |            additional non-auto trait
+   |            first non-auto trait
+LL | trait _3 = _2;
+   |            -- referenced here (additional use)
+LL | trait _4 = _3;
+   |            -- referenced here (additional use)
+...
+LL | type _T12 = dyn _2 + _4;
+   |                 --   ^^ trait alias used in trait object type (additional use)
+   |                 |
+   |                 trait alias used in trait object type (first use)
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjB + ObjB {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:43:22
+   |
+LL | trait _2 = ObjB;
+   |            ----
+   |            |
+   |            additional non-auto trait
+   |            first non-auto trait
+LL | trait _3 = _2;
+   |            -- referenced here (first use)
+LL | trait _4 = _3;
+   |            -- referenced here (first use)
+...
+LL | type _T13 = dyn _4 + _2;
+   |                 --   ^^ trait alias used in trait object type (additional use)
+   |                 |
+   |                 trait alias used in trait object type (first use)
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjB + ObjB {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:50:22
+   |
+LL | trait _0 = ObjA;
+   |            ---- additional non-auto trait
+LL | trait _1 = _0;
+   |            -- referenced here (additional use)
+...
+LL | trait _5 = Sync + ObjB + Send;
+   |                   ---- first non-auto trait
+LL |
+LL | type _T20 = dyn _5 + _1;
+   |                 --   ^^ trait alias used in trait object type (additional use)
+   |                 |
+   |                 trait alias used in trait object type (first use)
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjB + ObjA {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:53:22
+   |
+LL | trait _0 = ObjA;
+   |            ---- first non-auto trait
+LL | trait _1 = _0;
+   |            -- referenced here (first use)
+...
+LL | trait _5 = Sync + ObjB + Send;
+   |                   ---- additional non-auto trait
+...
+LL | type _T21 = dyn _1 + _5;
+   |                 --   ^^ trait alias used in trait object type (additional use)
+   |                 |
+   |                 trait alias used in trait object type (first use)
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjA + ObjB {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:56:22
+   |
+LL | trait _5 = Sync + ObjB + Send;
+   |                   ---- first non-auto trait
+...
+LL | type _T22 = dyn _5 + ObjA;
+   |                 --   ^^^^ additional non-auto trait
+   |                 |
+   |                 trait alias used in trait object type (first use)
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjB + ObjA {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:59:24
+   |
+LL | trait _5 = Sync + ObjB + Send;
+   |                   ---- additional non-auto trait
+...
+LL | type _T23 = dyn ObjA + _5;
+   |                 ----   ^^ trait alias used in trait object type (additional use)
+   |                 |
+   |                 first non-auto trait
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjA + ObjB {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:62:29
+   |
+LL | trait _0 = ObjA;
+   |            ---- additional non-auto trait
+LL | trait _1 = _0;
+   |            -- referenced here (additional use)
+...
+LL | trait _5 = Sync + ObjB + Send;
+   |                   ---- first non-auto trait
+...
+LL | type _T24 = dyn Send + _5 + _1 + Sync;
+   |                        --   ^^ trait alias used in trait object type (additional use)
+   |                        |
+   |                        trait alias used in trait object type (first use)
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjB + ObjA {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:65:29
+   |
+LL | trait _0 = ObjA;
+   |            ---- first non-auto trait
+LL | trait _1 = _0;
+   |            -- referenced here (first use)
+...
+LL | trait _5 = Sync + ObjB + Send;
+   |                   ---- additional non-auto trait
+...
+LL | type _T25 = dyn _1 + Sync + _5 + Send;
+   |                 --          ^^ trait alias used in trait object type (additional use)
+   |                 |
+   |                 trait alias used in trait object type (first use)
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjA + ObjB {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:68:36
+   |
+LL | trait _5 = Sync + ObjB + Send;
+   |                   ---- first non-auto trait
+...
+LL | type _T26 = dyn Sync + Send + _5 + ObjA;
+   |                               --   ^^^^ additional non-auto trait
+   |                               |
+   |                               trait alias used in trait object type (first use)
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjB + ObjA {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:71:38
+   |
+LL | trait _5 = Sync + ObjB + Send;
+   |                   ---- additional non-auto trait
+...
+LL | type _T27 = dyn Send + Sync + ObjA + _5;
+   |                               ----   ^^ trait alias used in trait object type (additional use)
+   |                               |
+   |                               first non-auto trait
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjA + ObjB {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:80:17
+   |
+LL | trait _0 = ObjA;
+   |            ---- first non-auto trait
+LL | trait _1 = _0;
+   |            -- referenced here (first use)
+...
+LL | trait _5 = Sync + ObjB + Send;
+   |                   ---- additional non-auto trait
+...
+LL | trait _6 = _1 + _5;
+   |            --   -- referenced here (additional use)
+   |            |
+   |            referenced here (first use)
+...
+LL | type _T30 = dyn _6;
+   |                 ^^
+   |                 |
+   |                 trait alias used in trait object type (additional use)
+   |                 trait alias used in trait object type (first use)
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjA + ObjB {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:83:17
+   |
+LL | trait _0 = ObjA;
+   |            ---- first non-auto trait
+LL | trait _1 = _0;
+   |            -- referenced here (first use)
+...
+LL | trait _5 = Sync + ObjB + Send;
+   |                   ---- additional non-auto trait
+...
+LL | trait _6 = _1 + _5;
+   |            --   -- referenced here (additional use)
+   |            |
+   |            referenced here (first use)
+...
+LL | type _T31 = dyn _6 + Send;
+   |                 ^^
+   |                 |
+   |                 trait alias used in trait object type (additional use)
+   |                 trait alias used in trait object type (first use)
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjA + ObjB {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:86:24
+   |
+LL | trait _0 = ObjA;
+   |            ---- first non-auto trait
+LL | trait _1 = _0;
+   |            -- referenced here (first use)
+...
+LL | trait _5 = Sync + ObjB + Send;
+   |                   ---- additional non-auto trait
+...
+LL | trait _6 = _1 + _5;
+   |            --   -- referenced here (additional use)
+   |            |
+   |            referenced here (first use)
+...
+LL | type _T32 = dyn Send + _6;
+   |                        ^^
+   |                        |
+   |                        trait alias used in trait object type (additional use)
+   |                        trait alias used in trait object type (first use)
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjA + ObjB {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:89:17
+   |
+LL | trait _0 = ObjA;
+   |            ---- first non-auto trait
+LL | trait _1 = _0;
+   |            -- referenced here (first use)
+...
+LL | trait _5 = Sync + ObjB + Send;
+   |                   ---- additional non-auto trait
+...
+LL | trait _6 = _1 + _5;
+   |            --   -- referenced here (additional use)
+   |            |
+   |            referenced here (first use)
+LL | trait _7 = _6;
+   |            --
+   |            |
+   |            referenced here (additional use)
+   |            referenced here (first use)
+LL | trait _8 = _7;
+   |            --
+   |            |
+   |            referenced here (additional use)
+   |            referenced here (first use)
+...
+LL | type _T33 = dyn _8;
+   |                 ^^
+   |                 |
+   |                 trait alias used in trait object type (additional use)
+   |                 trait alias used in trait object type (first use)
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjA + ObjB {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:92:17
+   |
+LL | trait _0 = ObjA;
+   |            ---- first non-auto trait
+LL | trait _1 = _0;
+   |            -- referenced here (first use)
+...
+LL | trait _5 = Sync + ObjB + Send;
+   |                   ---- additional non-auto trait
+...
+LL | trait _6 = _1 + _5;
+   |            --   -- referenced here (additional use)
+   |            |
+   |            referenced here (first use)
+LL | trait _7 = _6;
+   |            --
+   |            |
+   |            referenced here (additional use)
+   |            referenced here (first use)
+LL | trait _8 = _7;
+   |            --
+   |            |
+   |            referenced here (additional use)
+   |            referenced here (first use)
+...
+LL | type _T34 = dyn _8 + Send;
+   |                 ^^
+   |                 |
+   |                 trait alias used in trait object type (additional use)
+   |                 trait alias used in trait object type (first use)
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjA + ObjB {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:95:24
+   |
+LL | trait _0 = ObjA;
+   |            ---- first non-auto trait
+LL | trait _1 = _0;
+   |            -- referenced here (first use)
+...
+LL | trait _5 = Sync + ObjB + Send;
+   |                   ---- additional non-auto trait
+...
+LL | trait _6 = _1 + _5;
+   |            --   -- referenced here (additional use)
+   |            |
+   |            referenced here (first use)
+LL | trait _7 = _6;
+   |            --
+   |            |
+   |            referenced here (additional use)
+   |            referenced here (first use)
+LL | trait _8 = _7;
+   |            --
+   |            |
+   |            referenced here (additional use)
+   |            referenced here (first use)
+...
+LL | type _T35 = dyn Send + _8;
+   |                        ^^
+   |                        |
+   |                        trait alias used in trait object type (additional use)
+   |                        trait alias used in trait object type (first use)
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjA + ObjB {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:103:23
+   |
+LL | trait _5 = Sync + ObjB + Send;
+   |                   ---- first non-auto trait
+...
+LL | trait _9 = _5 + Sync;
+   |            -- referenced here (first use)
+LL | trait _10 = Unpin + _9;
+   |                     -- referenced here (first use)
+LL |
+LL | type _T40 = dyn _10 + ObjA;
+   |                 ---   ^^^^ additional non-auto trait
+   |                 |
+   |                 trait alias used in trait object type (first use)
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjB + ObjA {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:106:24
+   |
+LL | trait _5 = Sync + ObjB + Send;
+   |                   ---- additional non-auto trait
+...
+LL | trait _9 = _5 + Sync;
+   |            -- referenced here (additional use)
+LL | trait _10 = Unpin + _9;
+   |                     -- referenced here (additional use)
+...
+LL | type _T41 = dyn ObjA + _10;
+   |                 ----   ^^^ trait alias used in trait object type (additional use)
+   |                 |
+   |                 first non-auto trait
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjA + ObjB {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:109:23
+   |
+LL | trait _0 = ObjA;
+   |            ---- additional non-auto trait
+LL | trait _1 = _0;
+   |            -- referenced here (additional use)
+...
+LL | trait _5 = Sync + ObjB + Send;
+   |                   ---- first non-auto trait
+...
+LL | trait _9 = _5 + Sync;
+   |            -- referenced here (first use)
+LL | trait _10 = Unpin + _9;
+   |                     -- referenced here (first use)
+...
+LL | type _T42 = dyn _10 + _1;
+   |                 ---   ^^ trait alias used in trait object type (additional use)
+   |                 |
+   |                 trait alias used in trait object type (first use)
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjB + ObjA {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:112:37
+   |
+LL | trait _5 = Sync + ObjB + Send;
+   |                   ---- first non-auto trait
+...
+LL | trait _9 = _5 + Sync;
+   |            -- referenced here (first use)
+LL | trait _10 = Unpin + _9;
+   |                     -- referenced here (first use)
+...
+LL | type _T43 = dyn Send + _10 + Sync + ObjA;
+   |                        ---          ^^^^ additional non-auto trait
+   |                        |
+   |                        trait alias used in trait object type (first use)
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjB + ObjA {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:115:24
+   |
+LL | trait _5 = Sync + ObjB + Send;
+   |                   ---- additional non-auto trait
+...
+LL | trait _9 = _5 + Sync;
+   |            -- referenced here (additional use)
+LL | trait _10 = Unpin + _9;
+   |                     -- referenced here (additional use)
+...
+LL | type _T44 = dyn ObjA + _10 + Send + Sync;
+   |                 ----   ^^^ trait alias used in trait object type (additional use)
+   |                 |
+   |                 first non-auto trait
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjA + ObjB {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error[E0225]: only auto traits can be used as additional traits in a trait object
+  --> $DIR/no-extra-traits.rs:118:37
+   |
+LL | trait _0 = ObjA;
+   |            ---- additional non-auto trait
+LL | trait _1 = _0;
+   |            -- referenced here (additional use)
+...
+LL | trait _5 = Sync + ObjB + Send;
+   |                   ---- first non-auto trait
+...
+LL | trait _9 = _5 + Sync;
+   |            -- referenced here (first use)
+LL | trait _10 = Unpin + _9;
+   |                     -- referenced here (first use)
+...
+LL | type _T45 = dyn Sync + Send + _10 + _1;
+   |                               ---   ^^ trait alias used in trait object type (additional use)
+   |                               |
+   |                               trait alias used in trait object type (first use)
+   |
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: ObjB + ObjA {}`
+   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
+
+error: aborting due to 28 previous errors
+
+For more information about this error, try `rustc --explain E0225`.