error: vtable entries: [
           MetadataDropInPlace,
           MetadataSize,
           MetadataAlign,
           Method(<S as A>::foo_a),
       ]
  --> $DIR/vtable-multiple.rs:18:1
   |
LL | impl A for S {}
   | ^^^^^^^^^^^^

error: vtable entries: [
           MetadataDropInPlace,
           MetadataSize,
           MetadataAlign,
           Method(<S as B>::foo_b),
       ]
  --> $DIR/vtable-multiple.rs:22:1
   |
LL | impl B for S {}
   | ^^^^^^^^^^^^

error: vtable entries: [
           MetadataDropInPlace,
           MetadataSize,
           MetadataAlign,
           Method(<S as A>::foo_a),
           Method(<S as B>::foo_b),
           TraitVPtr(<S as B>),
           Method(<S as C>::foo_c),
       ]
  --> $DIR/vtable-multiple.rs:26:1
   |
LL | impl C for S {}
   | ^^^^^^^^^^^^

error: aborting due to 3 previous errors