Doc-tests issues

running 1 test
test lib/common/issues/src/lib.rs - (line 7) ... FAILED

failures:

---- lib/common/issues/src/lib.rs - (line 7) stdout ----
error[E0407]: method `distinctive` is not a member of trait `Issue`
  --> lib/common/issues/src/lib.rs:25:5
   |
21 | /     fn distinctive(&self) -> &str {
22 | |         &self.distinctive
23 | |     }
   | |_____^ not a member of trait `Issue`

error[E0046]: not all trait items implemented, missing: `instance_id`
  --> lib/common/issues/src/lib.rs:24:1
   |
20 | impl Issue for DummyIssue {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^ missing `instance_id` in implementation
   |
   = help: implement the missing item: `fn instance_id(&self) -> &str { todo!() }`

error[E0599]: no method named `code` found for struct `DummyIssue` in the current scope
  --> lib/common/issues/src/lib.rs:47:41
   |
8  | pub(crate) struct DummyIssue {
   | ---------------------------- method `code` not found for this struct
...
43 | issues::solve(DummyIssue::new("issue1").code()); // returns true if the issue was solved
   |                                         ^^^^ method not found in `DummyIssue`