try hyphens

.travis.yml

@@ -27,14 +27,14 @@ matrix:
       if: type = cron
     # stable
     # TODO: make cron only
-    - name: "ARCH=arm64 REPO=4.18"
-      env: ARCH=arm64 REPO="4.18"
-    - name: "ARCH=arm64 REPO=4.14"
-      env: ARCH=arm64 REPO="4.14"
-    - name: "ARCH=arm64 REPO=4.9"
-      env: ARCH=arm64 REPO="4.9"
-    - name: "ARCH=arm64 REPO=4.4"
-      env: ARCH=arm64 REPO="4.4"
+    - name: "ARCH=arm64 REPO=4-18"
+      env: ARCH=arm64 REPO=4.18
+    - name: "ARCH=arm64 REPO=4-14"
+      env: ARCH=arm64 REPO=4-14
+    - name: "ARCH=arm64 REPO=4-9"
+      env: ARCH=arm64 REPO=4-9
+    - name: "ARCH=arm64 REPO=4-4"
+      env: ARCH=arm64 REPO=4-4
 compiler: gcc
 os: linux
 dist: trusty

driver.sh

@@ -26,10 +26,10 @@ setup_variables() {
         echo "       Nicknames for trees:"
         echo "         linux (default)"
         echo "         linux-next"
-        echo "         4.18"
-        echo "         4.14"
-        echo "         4.9"
-        echo "         4.4"
+        echo "         4-18"
+        echo "         4-14"
+        echo "         4-9"
+        echo "         4-4"
         echo
         echo " Optional parameters:"
         echo "   -c | --clean:"
@@ -93,19 +93,19 @@ setup_variables() {
       owner=next
       tree=linux-next
       branch=master ;;
-    "4.18")
+    "4-18")
       owner=stable
       tree=linux
       branch=linux-4.18.y ;;
-    "4.14")
+    "4-14")
       owner=stable
       tree=linux
       branch=linux-4.14.y ;;
-    "4.9")
+    "4-9")
       owner=stable
       tree=linux
       branch=linux-4.9.y ;;
-    "4.4")
+    "4-4")
       owner=stable
       tree=linux
       branch=linux-4.4.y ;;