do not merge: try installing as of 2 months ago

Author: ljharb

.travis.yml

@@ -13,8 +13,9 @@ node_js:
   - "0.10"
 before_install:
   - 'nvm install-latest-npm'
+  - 'npm install -g npm@~6.13'
 install:
-  - 'if [ "${TRAVIS_NODE_VERSION}" = "0.6" ]; then nvm install --latest-npm 0.8 && npm install && nvm use "${TRAVIS_NODE_VERSION}"; else npm install; fi;'
+  - 'if [ "${TRAVIS_NODE_VERSION}" = "0.6" ]; then nvm install --latest-npm 0.8 && npm install && nvm use "${TRAVIS_NODE_VERSION}"; else npm install --before=2020-02-02; fi;'
   - 'npm ls > /dev/null'
 script:
   - 'if [ -n "${PRETEST-}" ]; then npm run pretest ; fi'