diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 680d261af63..f0a3c064e1c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -205,7 +205,7 @@ jobs:
       - uses: actions-rs/cargo@v1
         with:
           command: install
-          args: cargo-nextest
+          args: cargo-nextest --locked
       - uses: actions-rs/cargo@v1
         with:
           command: nextest
diff --git a/massa-execution-worker/src/speculative_executed_denunciations.rs b/massa-execution-worker/src/speculative_executed_denunciations.rs
index 8c7466bc844..1c8f9bb2c13 100644
--- a/massa-execution-worker/src/speculative_executed_denunciations.rs
+++ b/massa-execution-worker/src/speculative_executed_denunciations.rs
@@ -73,10 +73,8 @@ impl SpeculativeExecutedDenunciations {
             HistorySearchResult::Present(_) => {
                 return true;
             }
-            HistorySearchResult::Absent => {
-                return false;
-            }
             HistorySearchResult::NoInfo => {}
+            HistorySearchResult::Absent => unreachable!(), // fetch_executed_denunciation does not return Absent
         }
 
         // check in the final state
diff --git a/massa-execution-worker/src/speculative_executed_ops.rs b/massa-execution-worker/src/speculative_executed_ops.rs
index 638d49bf247..f3a44386e69 100644
--- a/massa-execution-worker/src/speculative_executed_ops.rs
+++ b/massa-execution-worker/src/speculative_executed_ops.rs
@@ -67,10 +67,8 @@ impl SpeculativeExecutedOps {
             HistorySearchResult::Present(_) => {
                 return true;
             }
-            HistorySearchResult::Absent => {
-                return false;
-            }
             HistorySearchResult::NoInfo => {}
+            HistorySearchResult::Absent => unreachable!(), // fetch_executed_op does not return Absent
         }
 
         // check in the final state