diff --git a/scripts/config.sh b/scripts/config.sh
index 2e03d30e..be7d48a5 100755
--- a/scripts/config.sh
+++ b/scripts/config.sh
@@ -76,23 +76,27 @@ ALL_PROJECT_DIRS=(
     "${CONTRIB_LIB_ROOT}"
 )
 
+function print_environment() {
+  echo "  ROCKET_VERSION: ${ROCKET_VERSION}"
+  echo "  CURRENT_RELEASE: ${CURRENT_RELEASE}"
+  echo "  PRE_RELEASE: ${PRE_RELEASE}"
+  echo "  VERSION_CODENAME: ${VERSION_CODENAME}"
+  echo "  SCRIPT_DIR: ${SCRIPT_DIR}"
+  echo "  PROJECT_ROOT: ${PROJECT_ROOT}"
+  echo "  CORE_ROOT: ${CORE_ROOT}"
+  echo "  CONTRIB_ROOT: ${CONTRIB_ROOT}"
+  echo "  SITE_ROOT: ${SITE_ROOT}"
+  echo "  CORE_LIB_ROOT: ${CORE_LIB_ROOT}"
+  echo "  CORE_CODEGEN_ROOT: ${CORE_CODEGEN_ROOT}"
+  echo "  CORE_HTTP_ROOT: ${CORE_HTTP_ROOT}"
+  echo "  CONTRIB_LIB_ROOT: ${CONTRIB_LIB_ROOT}"
+  echo "  CONTRIB_CODEGEN_ROOT: ${CONTRIB_CODEGEN_ROOT}"
+  echo "  EXAMPLES_DIR: ${EXAMPLES_DIR}"
+  echo "  DOC_DIR: ${DOC_DIR}"
+  echo "  ALL_PROJECT_DIRS: ${ALL_PROJECT_DIRS[*]}"
+  echo "  date(): $(future_date)"
+}
+
 if [ "${1}" = "-p" ]; then
-  echo "ROCKET_VERSION: ${ROCKET_VERSION}"
-  echo "CURRENT_RELEASE: ${CURRENT_RELEASE}"
-  echo "PRE_RELEASE: ${PRE_RELEASE}"
-  echo "VERSION_CODENAME: ${VERSION_CODENAME}"
-  echo "SCRIPT_DIR: ${SCRIPT_DIR}"
-  echo "PROJECT_ROOT: ${PROJECT_ROOT}"
-  echo "CORE_ROOT: ${CORE_ROOT}"
-  echo "CONTRIB_ROOT: ${CONTRIB_ROOT}"
-  echo "SITE_ROOT: ${SITE_ROOT}"
-  echo "CORE_LIB_ROOT: ${CORE_LIB_ROOT}"
-  echo "CORE_CODEGEN_ROOT: ${CORE_CODEGEN_ROOT}"
-  echo "CORE_HTTP_ROOT: ${CORE_HTTP_ROOT}"
-  echo "CONTRIB_LIB_ROOT: ${CONTRIB_LIB_ROOT}"
-  echo "CONTRIB_CODEGEN_ROOT: ${CONTRIB_CODEGEN_ROOT}"
-  echo "EXAMPLES_DIR: ${EXAMPLES_DIR}"
-  echo "DOC_DIR: ${DOC_DIR}"
-  echo "ALL_PROJECT_DIRS: ${ALL_PROJECT_DIRS[*]}"
-  echo "date(): $(future_date)"
+  print_environment
 fi
diff --git a/scripts/test.sh b/scripts/test.sh
index 3110477b..e9459b06 100755
--- a/scripts/test.sh
+++ b/scripts/test.sh
@@ -7,6 +7,8 @@ source "${SCRIPT_DIR}/config.sh"
 
 # Add Cargo to PATH.
 export PATH=${HOME}/.cargo/bin:${PATH}
+export CARGO_INCREMENTAL=0
+CARGO="cargo"
 
 # Checks that the versions for Cargo projects $@ all match
 function check_versions_match() {
@@ -49,6 +51,15 @@ function ensure_trailing_whitespace_free() {
   fi
 }
 
+if [[ $1 == +* ]]; then
+    CARGO="$CARGO $1"
+    shift
+fi
+
+echo ":: Preparing. Environment is..."
+print_environment
+echo "  CARGO: $CARGO"
+
 echo ":: Ensuring all crate versions match..."
 check_versions_match "${ALL_PROJECT_DIRS[@]}"
 
@@ -59,7 +70,7 @@ echo ":: Checking for trailing whitespace..."
 ensure_trailing_whitespace_free
 
 echo ":: Updating dependencies..."
-cargo update
+$CARGO update
 
 if [ "$1" = "--contrib" ]; then
   FEATURES=(
@@ -83,11 +94,11 @@ if [ "$1" = "--contrib" ]; then
   pushd "${CONTRIB_LIB_ROOT}" > /dev/null 2>&1
 
   echo ":: Building and testing contrib [default]..."
-  CARGO_INCREMENTAL=0 cargo test
+  $CARGO test
 
   for feature in "${FEATURES[@]}"; do
     echo ":: Building and testing contrib [${feature}]..."
-    CARGO_INCREMENTAL=0 cargo test --no-default-features --features "${feature}"
+    $CARGO test --no-default-features --features "${feature}"
   done
 
   popd > /dev/null 2>&1
@@ -100,16 +111,16 @@ elif [ "$1" = "--core" ]; then
   pushd "${CORE_LIB_ROOT}" > /dev/null 2>&1
 
   echo ":: Building and testing core [no features]..."
-  CARGO_INCREMENTAL=0 cargo test --no-default-features
+  $CARGO test --no-default-features
 
   for feature in "${FEATURES[@]}"; do
     echo ":: Building and testing core [${feature}]..."
 
-    CARGO_INCREMENTAL=0 cargo test --no-default-features --features "${feature}"
+    $CARGO test --no-default-features --features "${feature}"
   done
 
   popd > /dev/null 2>&1
 else
   echo ":: Building and testing libraries..."
-  CARGO_INCREMENTAL=0 cargo test --all-features --all $@
+  $CARGO test --all-features --all $@
 fi