diff --git a/libcxx/utils/ci/run-buildbot b/libcxx/utils/ci/run-buildbot
--- a/libcxx/utils/ci/run-buildbot
+++ b/libcxx/utils/ci/run-buildbot
@@ -370,13 +370,14 @@
           -DLLVM_RUNTIME_TARGETS="$(${CXX} --print-target-triple)" \
           -DLLVM_TARGETS_TO_BUILD="host" \
           -DRUNTIMES_BUILD_ALLOW_DARWIN=ON \
-          -DLLVM_ENABLE_ASSERTIONS=ON
+          -DLLVM_ENABLE_ASSERTIONS=ON \
+          -DLLVM_LIT_ARGS="-sv --show-unsupported --xunit-xml-output test-results.xml --timeout=1500 --time-tests"
 
     echo "+++ Running the libc++ and libc++abi tests"
-    ${NINJA} -C "${BUILD_DIR}" check-runtimes
+    ${NINJA} -vC "${BUILD_DIR}" check-runtimes
 
     echo "--- Installing libc++ and libc++abi to a fake location"
-    ${NINJA} -C "${BUILD_DIR}" install-runtimes
+    ${NINJA} -vC "${BUILD_DIR}" install-runtimes
 
     ccache -s
 ;;