diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 9c9e2b22..6ddc8a4d 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -7,10 +7,9 @@ on:
     branches: [main]
 
 env:
-  COLUMNS: 250
+  COLUMNS: 80
   CARGO_INCREMENTAL: 0
-  # TODO: Would be nice to disable warnings here too, but there are too many of them.
-  RUSTFLAGS: "-W rust-2021-compatibility"
+  RUSTFLAGS: "-W rust-2021-compatibility -D warnings"
   RUST_BACKTRACE: short
   NEXTEST_PROFILE: ci
   CI: 1
diff --git a/tests/ui-tests/tests/cases/enum-guess-validation.rs b/tests/ui-tests/tests/cases/enum-guess-validation.rs
index 2c8d7c55..a2f542da 100644
--- a/tests/ui-tests/tests/cases/enum-guess-validation.rs
+++ b/tests/ui-tests/tests/cases/enum-guess-validation.rs
@@ -9,6 +9,7 @@ mod schema {
     schema_path = "../../../../schemas/simple.graphql",
     graphql_type = "Desseqt"
 )]
+#[allow(non_camel_case_types)]
 enum Dessert {
     CHEESECAKE,
     ICE_CREAM,
diff --git a/tests/ui-tests/tests/cases/enum-guess-validation.stderr b/tests/ui-tests/tests/cases/enum-guess-validation.stderr
index 13709ec1..62a867f5 100644
--- a/tests/ui-tests/tests/cases/enum-guess-validation.stderr
+++ b/tests/ui-tests/tests/cases/enum-guess-validation.stderr
@@ -3,11 +3,3 @@ error: Could not find a type named `Desseqt` in the schema
    |
 10 |     graphql_type = "Desseqt"
    |                    ^^^^^^^^^
-
-warning: variant `ICE_CREAM` should have an upper camel case name
-  --> tests/cases/enum-guess-validation.rs:14:5
-   |
-14 |     ICE_CREAM,
-   |     ^^^^^^^^^ help: convert the identifier to upper camel case: `IceCream`
-   |
-   = note: `#[warn(non_camel_case_types)]` on by default