diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 2b73add5a34a96c2a176a119b9d18ce9831587aa..70a75e6a1a324ce77a0348697803d7d22afa3ec5 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -13,7 +13,7 @@ stages:
     - test
 
 .rust_minimum:
-    image: "rust:1.81"
+    image: "rust:1.82"
 
     variables:
         CARGO_UPDATE_POLICY: newest
diff --git a/ghostflow-github/src/ghostflow.rs b/ghostflow-github/src/ghostflow.rs
index 8a8015512470be9f2300dd3c546608a0a8c6cd76..7b81d982ddc1f73aaec9905444dfecabcddea31f 100644
--- a/ghostflow-github/src/ghostflow.rs
+++ b/ghostflow-github/src/ghostflow.rs
@@ -1395,6 +1395,8 @@ impl Debug for GithubService {
 
 #[cfg(test)]
 mod tests {
+    use std::iter;
+
     use ghostflow::host::User;
 
     use crate::authorization::CurrentUser;
@@ -1446,9 +1448,13 @@ mod tests {
             trim_to_check_run_limit, GITHUB_CHECK_RUN_MESSAGE_LIMIT, GITHUB_OVERFLOW_INDICATOR,
         };
 
-        let just_short_enough = format!("{:width$}", 0, width = GITHUB_CHECK_RUN_MESSAGE_LIMIT);
+        let just_short_enough: String = iter::repeat_n(' ', GITHUB_CHECK_RUN_MESSAGE_LIMIT - 1)
+            .chain(iter::once('0'))
+            .collect();
         assert_eq!(just_short_enough.len(), GITHUB_CHECK_RUN_MESSAGE_LIMIT);
-        let long_text = format!("{:width$}", 0, width = GITHUB_CHECK_RUN_MESSAGE_LIMIT + 1);
+        let long_text: String = iter::repeat_n(' ', GITHUB_CHECK_RUN_MESSAGE_LIMIT)
+            .chain(iter::once('0'))
+            .collect();
         assert!(long_text.len() > GITHUB_CHECK_RUN_MESSAGE_LIMIT);
         let long_text_trimmed = format!(
             "{}{:width$}",