diff --git a/.github/workflows/ubuntu_x86_64_nix_debug.yml b/.github/workflows/ubuntu_x86_64_nix_debug.yml
index 05835bb932..9ec90dede6 100644
--- a/.github/workflows/ubuntu_x86_64_nix_debug.yml
+++ b/.github/workflows/ubuntu_x86_64_nix_debug.yml
@@ -24,4 +24,4 @@ jobs:
 
         # for skipped tests; see #6946, #6947
         - name: cargo test without --release
-          run: nix develop -c sh -c 'export ROC_CHECK_MONO_IR=1 && cargo test -- --skip tests/exhaustive/match_on_result_with_uninhabited_error_destructuring_in_lambda_syntax.txt --skip tests::identity_lambda --skip tests::issue_2300 --skip tests::issue_2582_specialize_result_value --skip tests::sum_lambda'
+          run: nix develop -c sh -c 'export ROC_CHECK_MONO_IR=1 && cargo test'
diff --git a/crates/compiler/uitest/src/uitest.rs b/crates/compiler/uitest/src/uitest.rs
index 5c792aadff..449b67c538 100644
--- a/crates/compiler/uitest/src/uitest.rs
+++ b/crates/compiler/uitest/src/uitest.rs
@@ -77,6 +77,14 @@ fn collect_uitest_files() -> io::Result<Vec<PathBuf>> {
             }
 
             if path.extension() == Some(OsStr::new("txt")) {
+                // see issue 6947
+                if cfg!(debug_assertions)
+                    && path.to_string_lossy().contains(
+                        "match_on_result_with_uninhabited_error_destructuring_in_lambda_syntax",
+                    )
+                {
+                    continue;
+                }
                 tests.push(path);
             }
         }
diff --git a/crates/repl_test/src/tests.rs b/crates/repl_test/src/tests.rs
index 7af99812c7..db99012d9d 100644
--- a/crates/repl_test/src/tests.rs
+++ b/crates/repl_test/src/tests.rs
@@ -624,12 +624,15 @@ fn list_of_3_field_records() {
     );
 }
 
+// not(debug_assertions) because of issue #6946
+#[cfg(not(debug_assertions))]
 #[test]
 fn identity_lambda() {
     expect_success("\\x -> x", "<function> : a -> a");
 }
 
-#[cfg(not(feature = "wasm"))]
+// not(debug_assertions) because of issue #6946
+#[cfg(all(not(feature = "wasm"), not(debug_assertions)))]
 #[test]
 fn sum_lambda() {
     expect_success("\\x, y -> x + y", "<function> : Num a, Num a -> Num a");
@@ -1049,7 +1052,8 @@ fn large_nullable_wrapped_tag_union() {
     )
 }
 
-#[cfg(not(feature = "wasm"))]
+// not(debug_assertions) because of issue #6946
+#[cfg(all(not(feature = "wasm"), not(debug_assertions)))]
 #[test]
 fn issue_2300() {
     expect_success(
@@ -1330,7 +1334,8 @@ fn box_box_type_alias() {
 }
 
 #[test]
-#[cfg(not(feature = "wasm"))]
+// not(debug_assertions) because of issue #6946
+#[cfg(all(not(feature = "wasm"), not(debug_assertions)))]
 fn issue_2582_specialize_result_value() {
     expect_success(
         r#"\x, list -> if x > 0 then List.first list else Ok """#,