[misc] removing node.js 6 from CI, ESLint 6 requiring 8 or newer

Author: rusher

.travis.yml

@@ -44,8 +44,6 @@ matrix:
   include:
   - node_js: "12"
     env: DB=build
-  - node_js: "6"
-    env: DB=mariadb:10.4 SKIP_LEAK=1
   - node_js: "8"
     env: DB=mariadb:10.4
   - node_js: "10"

.travis/script.sh

@@ -25,7 +25,7 @@ else
   docker-compose -f .travis/docker-compose.yml up -d
 fi
 
-if [ -z "$SKIP_LEAK" ] ; then npm install node-memwatch; fi
+npm install node-memwatch
 
 node .travis/wait-for-docker-up.js
 

appveyor.yml

@@ -12,11 +12,6 @@ environment:
   TEST_LOG_PACKETS: true
   matrix:
 
-    - DB: '10.4.6'
-      MEM: "21"
-      nodejs_version: "6"
-      SKIP_LEAK: "1"
-
     - DB: '10.4.6'
       MEM: "21"
       nodejs_version: "8"
@@ -92,7 +87,7 @@ build: off
 
 test_script:
   - node --version
-  - if "%SKIP_LEAK%" == "" npm install node-memwatch
+  - npm install node-memwatch
   - if "%BENCH%" == "1" ( npm install microtime ) else ( npm test )
   - if "%BENCH%" == "1" ( npm install promise-mysql mysql2 )
   - if "%BENCH%" == "1" ( node c:\projects\mariadb-connector-nodejs\benchmarks\benchmarks.js )