Update ui tests for warning on colliding aliases

test_suite/tests/ui/conflict/alias.stderr

@@ -1,35 +1,43 @@
-error: alias `b` conflicts with deserialization name of other field
- --> tests/ui/conflict/alias.rs:5:5
-  |
-5 | /     /// Expected error on "alias b", because this is a name of other field
-6 | |     /// Error on "alias a" is not expected because this is a name of this field
-7 | |     /// Error on "alias c" is not expected because field `c` is skipped
-8 | |     #[serde(alias = "a", alias = "b", alias = "c")]
-9 | |     a: (),
-  | |_________^
-
-error: alias `c` already used by field a
-  --> tests/ui/conflict/alias.rs:11:5
+error: expected expression, found `@`
+  --> tests/ui/conflict/alias.rs:41:5
    |
-11 | /     /// Expected error on "alias c", because it is already used as alias of `a`
-12 | |     #[serde(alias = "c")]
-13 | |     b: (),
-   | |_________^
+41 |     @//fail
+   |     ^ expected expression
 
-error: alias `c` conflicts with deserialization name of other field
-  --> tests/ui/conflict/alias.rs:21:5
+warning: unreachable pattern
+  --> tests/ui/conflict/alias.rs:13:5
    |
-21 | /     /// Expected error on "alias c", because this is a name of other field after
-22 | |     /// applying rename rules
-23 | |     #[serde(alias = "b", alias = "c")]
-24 | |     a: (),
-   | |_________^
+8  |     #[serde(alias = "a", alias = "b", alias = "c")]
+   |                                  --- matches all the relevant values
+...
+13 |     b: (),
+   |     ^ no value can reach this
+   |
+   = note: `#[warn(unreachable_patterns)]` on by default
 
-error: alias `B` conflicts with deserialization name of other field
-  --> tests/ui/conflict/alias.rs:33:5
+warning: unreachable pattern
+  --> tests/ui/conflict/alias.rs:12:21
    |
-33 | /     /// Expected error on "alias B", because this is a name of field after
-34 | |     /// applying rename rules
-35 | |     #[serde(alias = "B", alias = "c")]
-36 | |     a: (),
-   | |_________^
+8  |     #[serde(alias = "a", alias = "b", alias = "c")]
+   |                                               --- matches all the relevant values
+...
+12 |     #[serde(alias = "c")]
+   |                     ^^^ no value can reach this
+
+warning: unreachable pattern
+  --> tests/ui/conflict/alias.rs:26:22
+   |
+23 |     #[serde(alias = "b", alias = "c")]
+   |                                  --- matches all the relevant values
+...
+26 |     #[serde(rename = "c")]
+   |                      ^^^ no value can reach this
+
+warning: unreachable pattern
+  --> tests/ui/conflict/alias.rs:37:5
+   |
+35 |     #[serde(alias = "B", alias = "c")]
+   |                     --- matches all the relevant values
+36 |     a: (),
+37 |     b: (),
+   |     ^ no value can reach this