error: expected one of `async`, `const`, `existential`, `extern`, `fn`, `type`, or `unsafe`, found `pub`
  --> $DIR/default.rs:22:13
   |
LL |     default pub fn foo<T: Default>() -> T { T::default() }
   |             ^^^ expected one of 7 possible tokens here

error[E0449]: unnecessary visibility qualifier
  --> $DIR/default.rs:16:5
   |
LL |     pub default fn foo<T: Default>() -> T {
   |     ^^^ `pub` not permitted here because it's implied

error[E0046]: not all trait items implemented, missing: `foo`
  --> $DIR/default.rs:21:1
   |
LL |     fn foo<T: Default>() -> T;
   |     -------------------------- `foo` from trait
...
LL | impl Foo for u32 {
   | ^^^^^^^^^^^^^^^^ missing `foo` in implementation

error: aborting due to 3 previous errors

Some errors have detailed explanations: E0046, E0449.
For more information about an error, try `rustc --explain E0046`.