diff --git a/.travis.yml b/.travis.yml
index ba977781e..ec3a57fbb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,186 +18,186 @@ stages:
 
 matrix:
   include:
-    - os: linux
-      dist: trusty
-      compiler: clang
-      jdk: openjdk8
-      env:
-        - TARGET=cpp
-        - CXX=g++-5
-        - GROUP=LEXER
-      stage: main-test
-      addons:
-        apt:
-          sources:
-            - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.7
-          packages:
-            - g++-5
-            - uuid-dev
-            - clang-3.7
-    - os: linux
-      dist: trusty
-      compiler: clang
-      jdk: openjdk8
-      env:
-        - TARGET=cpp
-        - CXX=g++-5
-        - GROUP=PARSER
-      stage: main-test
-      addons:
-        apt:
-          sources:
-            - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.7
-          packages:
-            - g++-5
-            - uuid-dev
-            - clang-3.7
-    - os: linux
-      dist: trusty
-      compiler: clang
-      jdk: openjdk8
-      env:
-        - TARGET=cpp
-        - CXX=g++-5
-        - GROUP=RECURSION
-      stage: main-test
-      addons:
-        apt:
-          sources:
-            - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.7
-          packages:
-            - g++-5
-            - uuid-dev
-            - clang-3.7
-    - os: osx
-      compiler: clang
-      osx_image: xcode10.2
-      env:
-        - TARGET=cpp
-        - GROUP=LEXER
-      stage: extended-test
-    - os: osx
-      compiler: clang
-      osx_image: xcode10.2
-      env:
-        - TARGET=cpp
-        - GROUP=PARSER
-      stage: extended-test
-    - os: osx
-      compiler: clang
-      osx_image: xcode10.2
-      env:
-        - TARGET=cpp
-        - GROUP=RECURSION
-      stage: extended-test
-    - os: osx
-      compiler: clang
-      osx_image: xcode10.2
-      env:
-        - TARGET=swift
-        - GROUP=LEXER
-      stage: main-test
-    - os: osx
-      compiler: clang
-      osx_image: xcode10.2
-      env:
-        - TARGET=swift
-        - GROUP=PARSER
-      stage: main-test
-    - os: osx
-      compiler: clang
-      osx_image: xcode10.2
-      env:
-        - TARGET=swift
-        - GROUP=RECURSION
-      stage: main-test
-    - os: linux
-      dist: xenial
-      compiler: clang
-      env:
-       - TARGET=swift
-       - GROUP=ALL
-      stage: extended-test
-    - os: osx
-      osx_image: xcode10.2
-      env:
-        - TARGET=dotnet
-        - GROUP=LEXER
-      stage: extended-test
-    - os: osx
-      osx_image: xcode10.2
-      env:
-        - TARGET=dotnet
-        - GROUP=PARSER
-      stage: extended-test
-    - os: osx
-      osx_image: xcode10.2
-      env:
-        - TARGET=dotnet
-        - GROUP=RECURSION
-      stage: extended-test
-    - os: linux
-      dist: trusty
-      jdk: openjdk7
-      env: TARGET=java
-      stage: extended-test
-    - os: linux
-      jdk: openjdk8
-      env: TARGET=java
-      stage: smoke-test
-    - os: linux
-      jdk: openjdk8
-      env: TARGET=csharp
-      stage: main-test
-    - os: linux
-      jdk: openjdk8
-      env: TARGET=dart
-      stage: main-test
-    - os: linux
-      language: php
-      php:
-        - 7.2
-      jdk: openjdk8
-      env: TARGET=php
-      stage: main-test
-    - os: linux
-      jdk: openjdk8
-      dist: trusty
-      env:
-        - TARGET=dotnet
-        - GROUP=LEXER
-      stage: extended-test
-    - os: linux
-      jdk: openjdk8
-      dist: trusty
-      env:
-        - TARGET=dotnet
-        - GROUP=PARSER
-      stage: extended-test
-    - os: linux
-      jdk: openjdk8
-      dist: trusty
-      env:
-        - TARGET=dotnet
-        - GROUP=RECURSION
-      stage: extended-test
-    - os: linux
-      jdk: openjdk8
-      env: TARGET=python2
-      stage: main-test
-    - os: linux
-      jdk: openjdk8
-      env: TARGET=python3
-      addons:
-        apt:
-          sources:
-            - deadsnakes # source required so it finds the package definition below
-          packages:
-            - python3.7
-      stage: main-test
+#    - os: linux
+#      dist: trusty
+#      compiler: clang
+#      jdk: openjdk8
+#      env:
+#        - TARGET=cpp
+#        - CXX=g++-5
+#        - GROUP=LEXER
+#      stage: main-test
+#      addons:
+#        apt:
+#          sources:
+#            - ubuntu-toolchain-r-test
+#            - llvm-toolchain-precise-3.7
+#          packages:
+#            - g++-5
+#            - uuid-dev
+#            - clang-3.7
+#    - os: linux
+#      dist: trusty
+#      compiler: clang
+#      jdk: openjdk8
+#      env:
+#        - TARGET=cpp
+#        - CXX=g++-5
+#        - GROUP=PARSER
+#      stage: main-test
+#      addons:
+#        apt:
+#          sources:
+#            - ubuntu-toolchain-r-test
+#            - llvm-toolchain-precise-3.7
+#          packages:
+#            - g++-5
+#            - uuid-dev
+#            - clang-3.7
+#    - os: linux
+#      dist: trusty
+#      compiler: clang
+#      jdk: openjdk8
+#      env:
+#        - TARGET=cpp
+#        - CXX=g++-5
+#        - GROUP=RECURSION
+#      stage: main-test
+#      addons:
+#        apt:
+#          sources:
+#            - ubuntu-toolchain-r-test
+#            - llvm-toolchain-precise-3.7
+#          packages:
+#            - g++-5
+#            - uuid-dev
+#            - clang-3.7
+#    - os: osx
+#      compiler: clang
+#      osx_image: xcode10.2
+#      env:
+#        - TARGET=cpp
+#        - GROUP=LEXER
+#      stage: extended-test
+#    - os: osx
+#      compiler: clang
+#      osx_image: xcode10.2
+#      env:
+#        - TARGET=cpp
+#        - GROUP=PARSER
+#      stage: extended-test
+#    - os: osx
+#      compiler: clang
+#      osx_image: xcode10.2
+#      env:
+#        - TARGET=cpp
+#        - GROUP=RECURSION
+#      stage: extended-test
+#    - os: osx
+#      compiler: clang
+#      osx_image: xcode10.2
+#      env:
+#        - TARGET=swift
+#        - GROUP=LEXER
+#      stage: main-test
+#    - os: osx
+#      compiler: clang
+#      osx_image: xcode10.2
+#      env:
+#        - TARGET=swift
+#        - GROUP=PARSER
+#      stage: main-test
+#    - os: osx
+#      compiler: clang
+#      osx_image: xcode10.2
+#      env:
+#        - TARGET=swift
+#        - GROUP=RECURSION
+#      stage: main-test
+#    - os: linux
+#      dist: xenial
+#      compiler: clang
+#      env:
+#       - TARGET=swift
+#       - GROUP=ALL
+#      stage: extended-test
+#    - os: osx
+#      osx_image: xcode10.2
+#      env:
+#        - TARGET=dotnet
+#        - GROUP=LEXER
+#      stage: extended-test
+#    - os: osx
+#      osx_image: xcode10.2
+#      env:
+#        - TARGET=dotnet
+#        - GROUP=PARSER
+#      stage: extended-test
+#    - os: osx
+#      osx_image: xcode10.2
+#      env:
+#        - TARGET=dotnet
+#        - GROUP=RECURSION
+#      stage: extended-test
+#    - os: linux
+#      dist: trusty
+#      jdk: openjdk7
+#      env: TARGET=java
+#      stage: extended-test
+#    - os: linux
+#      jdk: openjdk8
+#      env: TARGET=java
+#      stage: smoke-test
+#    - os: linux
+#      jdk: openjdk8
+#      env: TARGET=csharp
+#      stage: main-test
+#    - os: linux
+#      jdk: openjdk8
+#      env: TARGET=dart
+#      stage: main-test
+#    - os: linux
+#      language: php
+#      php:
+#        - 7.2
+#      jdk: openjdk8
+#      env: TARGET=php
+#      stage: main-test
+#    - os: linux
+#      jdk: openjdk8
+#      dist: trusty
+#      env:
+#        - TARGET=dotnet
+#        - GROUP=LEXER
+#      stage: extended-test
+#    - os: linux
+#      jdk: openjdk8
+#      dist: trusty
+#      env:
+#        - TARGET=dotnet
+#        - GROUP=PARSER
+#      stage: extended-test
+#    - os: linux
+#      jdk: openjdk8
+#      dist: trusty
+#      env:
+#        - TARGET=dotnet
+#        - GROUP=RECURSION
+#      stage: extended-test
+#    - os: linux
+#      jdk: openjdk8
+#      env: TARGET=python2
+#      stage: main-test
+#    - os: linux
+#      jdk: openjdk8
+#      env: TARGET=python3
+#      addons:
+#        apt:
+#          sources:
+#            - deadsnakes # source required so it finds the package definition below
+#          packages:
+#            - python3.7
+#      stage: main-test
     - os: linux
       dist: trusty
       jdk: openjdk8
@@ -205,11 +205,12 @@ matrix:
       stage: main-test
       before_install:
         - nvm install 14 # otherwise it runs by default on node 8
-    - os: linux
-      dist: trusty
-      jdk: openjdk8
-      env: TARGET=go
-      stage: main-test
+        - f="./.travis/before-install-linux-javascript.sh"; ! [ -x "$f" ] || "$f"
+#    - os: linux
+#      dist: trusty
+#      jdk: openjdk8
+#      env: TARGET=go
+#      stage: main-test
 
 before_install:
   - f="./.travis/before-install-$TRAVIS_OS_NAME-$TARGET.sh"; ! [ -x "$f" ] || "$f"
diff --git a/.travis/before-install-linux-javascript.sh b/.travis/before-install-linux-javascript.sh
index b09f647c7..5ad81f41c 100755
--- a/.travis/before-install-linux-javascript.sh
+++ b/.travis/before-install-linux-javascript.sh
@@ -3,4 +3,5 @@
 set -euo pipefail
 
 # use v14 and check
-node --version
+echo node version: $(node --version)
+