error[E0425]: cannot find value `__FAIL__` in this scope
  --> tests/ui/conflict/alias.rs:38:5
   |
38 |     __FAIL__;
   |     ^^^^^^^^ not found in this scope

warning: unreachable pattern
  --> tests/ui/conflict/alias.rs:10:5
   |
 5 |     #[serde(alias = "a", alias = "b", alias = "c")]
   |                                  --- matches all the relevant values
...
10 |     b: (),
   |     ^ no value can reach this
   |
   = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default

warning: unreachable pattern
 --> tests/ui/conflict/alias.rs:9:21
  |
5 |     #[serde(alias = "a", alias = "b", alias = "c")]
  |                                               --- matches all the relevant values
...
9 |     #[serde(alias = "c")]
  |                     ^^^ no value can reach this

warning: unreachable pattern
  --> tests/ui/conflict/alias.rs:22:22
   |
18 |     #[serde(alias = "b", alias = "c")]
   |                                  --- matches all the relevant values
...
22 |     #[serde(rename = "c")]
   |                      ^^^ no value can reach this

warning: unreachable pattern
  --> tests/ui/conflict/alias.rs:34:5
   |
29 |     #[serde(alias = "B", alias = "c")]
   |                     --- matches all the relevant values
...
34 |     b: (),
   |     ^ no value can reach this