error[E0425]: cannot find value `oops` in this scope
  --> $DIR/fn-help-with-err.rs:3:35
   |
LL |     let arc = std::sync::Arc::new(oops);
   |                                   ^^^^ not found in this scope

error[E0599]: no method named `blablabla` found for struct `Arc<_>` in the current scope
  --> $DIR/fn-help-with-err.rs:7:9
   |
LL |     arc.blablabla();
   |         ^^^^^^^^^ method not found in `Arc<_>`

error[E0599]: no method named `blablabla` found for struct `Arc<[closure@$DIR/fn-help-with-err.rs:10:36: 10:38]>` in the current scope
  --> $DIR/fn-help-with-err.rs:12:10
   |
LL |     arc2.blablabla();
   |     ---- ^^^^^^^^^ method not found in `Arc<[closure@$DIR/fn-help-with-err.rs:10:36: 10:38]>`
   |     |
   |     this is a function, perhaps you wish to call it

error: aborting due to 3 previous errors

Some errors have detailed explanations: E0425, E0599.
For more information about an error, try `rustc --explain E0425`.