diff --git a/Dockerfile b/Dockerfile
index a60e697..186bd1d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,7 @@ RUN apt-get update \
  # Install required build and runtime dependencies, cannot use `--no-install-recommends`
  && apt-get install -y jq wget unzip libmpfr6 libwebkit2gtk-4.1-0 libpcre3 \
  # Fetch pre-built nightly release and install it
- && wget --quiet --output-document arturo.zip https://github.com/arturo-lang/nightly/releases/download/2025-07-05/arturo-nightly.2025-07-04-amd64-linux-full.zip \
+ && wget --quiet --output-document arturo.zip https://github.com/arturo-lang/nightly/releases/download/2025-04-01/arturo-nightly.2025-03-31-amd64-linux-full.zip \
  && unzip -d /usr/local/bin arturo.zip arturo \
  && rm arturo.zip \
  # Install unitt test framework
diff --git a/tests/all-fail/expected_results.json b/tests/all-fail/expected_results.json
index 1382e86..ae9f9da 100644
--- a/tests/all-fail/expected_results.json
+++ b/tests/all-fail/expected_results.json
@@ -1,5 +1,5 @@
 {
   "version": 1,
   "status": "fail",
-  "message": "\n===== tests/test-all-fail.art =====\n\nDescription: Leap \n \n    \u001b[0;33m❌ - assert that a year not divisible by 4 is a common year\u001b[0m\n_repr\nthis\\_condition\n         \u001b[0;31m❌: false\u001b[0m\n\n    \u001b[0;33m❌ - assert that a year divisible by 2 and not divisible by 4 is a common year\u001b[0m\n_repr\nthis\\_condition\n         \u001b[0;31m❌: false\u001b[0m\n\n    \u001b[0;33m❌ - assert that a year divisible by 4 and not divisible by 100 is a leap year\u001b[0m\n_repr\nthis\\_condition\n         \u001b[0;31m❌: false\u001b[0m\n\n    \u001b[0;33m❌ - assert that a year divisible by 4 and 5 is still a leap year\u001b[0m\n_repr\nthis\\_condition\n         \u001b[0;31m❌: false\u001b[0m\n\n    \u001b[0;33m❌ - assert that a year divisible by 100 and not divisible by 400 is a common year\u001b[0m\n_repr\nthis\\_condition\n         \u001b[0;31m❌: false\u001b[0m\n\n    \u001b[0;33m❌ - assert that a year divisible by 100 but not divisible by 3 is still not a leap year\u001b[0m\n_repr\nthis\\_condition\n         \u001b[0;31m❌: false\u001b[0m\n\n    \u001b[0;33m❌ - assert that a year divisible by 400 is a leap year\u001b[0m\n_repr\nthis\\_condition\n         \u001b[0;31m❌: false\u001b[0m\n\n    \u001b[0;33m❌ - assert that a year divisible by 400 but not by 125 is still a leap year\u001b[0m\n_repr\nthis\\_condition\n         \u001b[0;31m❌: false\u001b[0m\n\n    \u001b[0;33m❌ - assert that a year divisible by 200 and not divisible by 400 is a common year\u001b[0m\n_repr\nthis\\_condition\n         \u001b[0;31m❌: false\u001b[0m\n\n\n\n===== Statistics =====\n\n ⏏️   TOTAL: 9 assertions\n✅  PASSED: 0 assertions\n⏩ SKIPPED: 0 assertions\n❌  FAILED: 9 assertions\n\n===== ========== =====\n\n\n\u001b[0;31m══╡ \u001b[1;31mProgram Error\u001b[0;31m ╞═════════════════════════════════════════════════ <script> ══\u001b[0m\n\n  Some tests have been failed!"
+  "message": "\n===== tests/test-all-fail.art =====\n\nDescription: Leap \n \n    \u001b[0;33m❌ - assert that a year not divisible by 4 is a common year\u001b[0m\n         \u001b[0;31m❌: false = true\u001b[0m\n\n    \u001b[0;33m❌ - assert that a year divisible by 2 and not divisible by 4 is a common year\u001b[0m\n         \u001b[0;31m❌: false = true\u001b[0m\n\n    \u001b[0;33m❌ - assert that a year divisible by 4 and not divisible by 100 is a leap year\u001b[0m\n         \u001b[0;31m❌: true = false\u001b[0m\n\n    \u001b[0;33m❌ - assert that a year divisible by 4 and 5 is still a leap year\u001b[0m\n         \u001b[0;31m❌: true = false\u001b[0m\n\n    \u001b[0;33m❌ - assert that a year divisible by 100 and not divisible by 400 is a common year\u001b[0m\n         \u001b[0;31m❌: false = true\u001b[0m\n\n    \u001b[0;33m❌ - assert that a year divisible by 100 but not divisible by 3 is still not a leap year\u001b[0m\n         \u001b[0;31m❌: false = true\u001b[0m\n\n    \u001b[0;33m❌ - assert that a year divisible by 400 is a leap year\u001b[0m\n         \u001b[0;31m❌: true = false\u001b[0m\n\n    \u001b[0;33m❌ - assert that a year divisible by 400 but not by 125 is still a leap year\u001b[0m\n         \u001b[0;31m❌: true = false\u001b[0m\n\n    \u001b[0;33m❌ - assert that a year divisible by 200 and not divisible by 400 is a common year\u001b[0m\n         \u001b[0;31m❌: false = true\u001b[0m\n\n\n\n===== Statistics =====\n\n ⏏️   TOTAL: 9 assertions\n✅  PASSED: 0 assertions\n⏩ SKIPPED: 0 assertions\n❌  FAILED: 9 assertions\n\n===== ========== =====\n\n\n\u001b[0;31m══╡ \u001b[1;31mProgram Error\u001b[0;31m ╞═════════════════════════════════════════════════ <script> ══\u001b[0m\n\n  Some tests have been failed!"
 }
diff --git a/tests/panic-fails/expected_results.json b/tests/panic-fails/expected_results.json
index c703c81..6fb4d52 100644
--- a/tests/panic-fails/expected_results.json
+++ b/tests/panic-fails/expected_results.json
@@ -1,5 +1,5 @@
 {
   "version": 1,
   "status": "fail",
-  "message": "\n===== tests/test-panic-fails.art =====\n\nDescription: Panic fails a test suite \n \n    \u001b[0;33m✅ - assert that alwaysTrue passes because implemented\u001b[0m\n_repr\nthis\\_condition\n         \u001b[0;32m✅: true\u001b[0m\n\n\n\u001b[0;31m══╡ \u001b[1;31mType Error\u001b[0;31m ╞════════════════════════════════════════════════════ <script> ══\u001b[0m\n\n  Erroneous type found\u001b[0m\n\n  Cannot call function:\n      \u001b[1mpanic\u001b[0m .code:\u001b[0;31m ◄\u001b[0m\n  \n  Wrong attribute value: \n      \u001b[1;32mtrue\u001b[0;90m :logical\u001b[0m\n  \n  Expected: \n      :integer\n\n  \u001b[0;90m┃ \u001b[1;90mFile: \u001b[0;90m/root/.arturo/packages/cache/unitt/2.0.1/src/internal/runner.art\n  \u001b[0;90m┃ \u001b[1;90mLine: \u001b[0;90m32\n  \u001b[0;90m┃ \u001b[0m\n  \u001b[0;90m┃   30 ║      ]\u001b[0m\n  \u001b[0;90m┃   31 ║  \u001b[0m\n  \u001b[0;90m┃ \u001b[1;90m  32\u001b[0;90m ║\u001b[0;31m►\u001b[0;90m \u001b[1;90m    fail: method [][\u001b[0;90m\u001b[0m\n  \u001b[0;90m┃   33 ║          panic.code: 1 \"Some tests have been failed!\"\u001b[0m\n  \u001b[0;90m┃   34 ║      ]\u001b[0m"
+  "message": "\n===== tests/test-panic-fails.art =====\n\nDescription: Panic fails a test suite \n \n    \u001b[0;33m✅ - assert that alwaysTrue passes because implemented\u001b[0m\n         \u001b[0;32m✅: true\u001b[0m\n\n\n\u001b[0;31m══╡ \u001b[1;31mType Error\u001b[0;31m ╞════════════════════════════════════════════════════ <script> ══\u001b[0m\n\n  Erroneous type found\u001b[0m\n\n  Cannot call function:\n      \u001b[1mpanic\u001b[0m .code:\u001b[0;31m ◄\u001b[0m\n  \n  Wrong attribute value: \n      \u001b[1;32mtrue\u001b[0;90m :logical\u001b[0m\n  \n  Expected: \n      :integer\n\n  \u001b[0;90m┃ \u001b[1;90mFile: \u001b[0;90m/root/.arturo/packages/cache/unitt/2.0.1/src/internal/runner.art\n  \u001b[0;90m┃ \u001b[1;90mLine: \u001b[0;90m32\n  \u001b[0;90m┃ \u001b[0m\n  \u001b[0;90m┃   30 ║      ]\u001b[0m\n  \u001b[0;90m┃   31 ║  \u001b[0m\n  \u001b[0;90m┃ \u001b[1;90m  32\u001b[0;90m ║\u001b[0;31m►\u001b[0;90m \u001b[1;90m    fail: method [][\u001b[0;90m\u001b[0m\n  \u001b[0;90m┃   33 ║          panic.code: 1 \"Some tests have been failed!\"\u001b[0m\n  \u001b[0;90m┃   34 ║      ]\u001b[0m"
 }
diff --git a/tests/partial-fail/expected_results.json b/tests/partial-fail/expected_results.json
index 71e5306..690ea29 100644
--- a/tests/partial-fail/expected_results.json
+++ b/tests/partial-fail/expected_results.json
@@ -1,5 +1,5 @@
 {
   "version": 1,
   "status": "fail",
-  "message": "\n===== tests/test-partial-fail.art =====\n\nDescription: Leap \n \n    \u001b[0;33m❌ - assert that a year not divisible by 4 is a common year\u001b[0m\n_repr\nthis\\_condition\n         \u001b[0;31m❌: false\u001b[0m\n\n    \u001b[0;33m❌ - assert that a year divisible by 2 and not divisible by 4 is a common year\u001b[0m\n_repr\nthis\\_condition\n         \u001b[0;31m❌: false\u001b[0m\n\n    \u001b[0;33m❌ - assert that a year divisible by 4 and not divisible by 100 is a leap year\u001b[0m\n_repr\nthis\\_condition\n         \u001b[0;31m❌: false\u001b[0m\n\n    \u001b[0;33m✅ - assert that a year divisible by 4 and 5 is still a leap year\u001b[0m\n_repr\nthis\\_condition\n         \u001b[0;32m✅: true\u001b[0m\n\n    \u001b[0;33m✅ - assert that a year divisible by 100 and not divisible by 400 is a common year\u001b[0m\n_repr\nthis\\_condition\n         \u001b[0;32m✅: true\u001b[0m\n\n    \u001b[0;33m✅ - assert that a year divisible by 100 but not divisible by 3 is still not a leap year\u001b[0m\n_repr\nthis\\_condition\n         \u001b[0;32m✅: true\u001b[0m\n\n    \u001b[0;33m✅ - assert that a year divisible by 400 is a leap year\u001b[0m\n_repr\nthis\\_condition\n         \u001b[0;32m✅: true\u001b[0m\n\n    \u001b[0;33m✅ - assert that a year divisible by 400 but not by 125 is still a leap year\u001b[0m\n_repr\nthis\\_condition\n         \u001b[0;32m✅: true\u001b[0m\n\n    \u001b[0;33m✅ - assert that a year divisible by 200 and not divisible by 400 is a common year\u001b[0m\n_repr\nthis\\_condition\n         \u001b[0;32m✅: true\u001b[0m\n\n\n\n===== Statistics =====\n\n ⏏️   TOTAL: 9 assertions\n✅  PASSED: 6 assertions\n⏩ SKIPPED: 0 assertions\n❌  FAILED: 3 assertions\n\n===== ========== =====\n\n\n\u001b[0;31m══╡ \u001b[1;31mProgram Error\u001b[0;31m ╞═════════════════════════════════════════════════ <script> ══\u001b[0m\n\n  Some tests have been failed!"
+  "message": "\n===== tests/test-partial-fail.art =====\n\nDescription: Leap \n \n    \u001b[0;33m❌ - assert that a year not divisible by 4 is a common year\u001b[0m\n         \u001b[0;31m❌: false = true\u001b[0m\n\n    \u001b[0;33m❌ - assert that a year divisible by 2 and not divisible by 4 is a common year\u001b[0m\n         \u001b[0;31m❌: false = true\u001b[0m\n\n    \u001b[0;33m❌ - assert that a year divisible by 4 and not divisible by 100 is a leap year\u001b[0m\n         \u001b[0;31m❌: true = false\u001b[0m\n\n    \u001b[0;33m✅ - assert that a year divisible by 4 and 5 is still a leap year\u001b[0m\n         \u001b[0;32m✅: true = true\u001b[0m\n\n    \u001b[0;33m✅ - assert that a year divisible by 100 and not divisible by 400 is a common year\u001b[0m\n         \u001b[0;32m✅: false = false\u001b[0m\n\n    \u001b[0;33m✅ - assert that a year divisible by 100 but not divisible by 3 is still not a leap year\u001b[0m\n         \u001b[0;32m✅: false = false\u001b[0m\n\n    \u001b[0;33m✅ - assert that a year divisible by 400 is a leap year\u001b[0m\n         \u001b[0;32m✅: true = true\u001b[0m\n\n    \u001b[0;33m✅ - assert that a year divisible by 400 but not by 125 is still a leap year\u001b[0m\n         \u001b[0;32m✅: true = true\u001b[0m\n\n    \u001b[0;33m✅ - assert that a year divisible by 200 and not divisible by 400 is a common year\u001b[0m\n         \u001b[0;32m✅: false = false\u001b[0m\n\n\n\n===== Statistics =====\n\n ⏏️   TOTAL: 9 assertions\n✅  PASSED: 6 assertions\n⏩ SKIPPED: 0 assertions\n❌  FAILED: 3 assertions\n\n===== ========== =====\n\n\n\u001b[0;31m══╡ \u001b[1;31mProgram Error\u001b[0;31m ╞═════════════════════════════════════════════════ <script> ══\u001b[0m\n\n  Some tests have been failed!"
 }