Remove no longer needed Travis CI support

Author: sergeyklay

.ci/after-failure.sh

@@ -17,17 +17,7 @@ do
   (>&1 printf ">>> START (%d)\\n%s\\n<<< END (%d)\\n\\n" $count "$(cat "$file")" $count)
 done < <(find ./tests -type f \( -name '*.out' -o -name '*.mem' \) -print0)
 
-# for some reason Ubuntu 18.04 on Travis CI doesn't install gdb
-function install_gdb() {
-  if [ "${CI}" = "true" ] && [ "$(command -v gdb 2>/dev/null)" = "" ]
-  then
-    (>&1 echo "Install gdb...")
-    sudo apt-get install --no-install-recommends --quiet --assume-yes gdb 1> /dev/null
-  fi
-}
-
 for i in /tmp/core.php.*; do
-  install_gdb
   (>&1 printf "Found core dump file: %s\\n\\n" "$i")
   gdb -q "$(phpenv which php)" "$i" <<EOF
 set pagination 0

.github/workflows/main.yml

@@ -61,7 +61,7 @@ jobs:
         if: runner.os == 'Linux'
         run: |
           sudo apt-get update --quiet --yes 1>/dev/null
-          sudo apt-get install --no-install-recommends --quiet --yes lcov
+          sudo apt-get install --no-install-recommends --quiet --yes lcov gdb
 
       - name: Setup Prerequisites (macOS)
         if: runner.os == 'macOS'
@@ -80,6 +80,7 @@ jobs:
           echo "::set-env name=RE2C_VERSION::${{ matrix.re2c }}"
           echo "::set-env name=PATH::$PATH:$HOME/bin:$(brew --prefix lcov)/bin"
           echo "::set-env name=MAKEFLAGS::-j$(getconf _NPROCESSORS_ONLN)"
+          echo "::set-env name=CI::true"
 
       - name: Setup Core Dump (Linux)
         if: runner.os == 'Linux'
@@ -108,12 +109,8 @@ jobs:
         run: make test NO_INTERACTION=1 REPORT_EXIT_STATUS=1
 
       - name: Print failures
-        if: failure()
-        run: |
-          re2c --version
-          php -v
-          php -m
-          .ci/after-failure.sh
+        if: failure() && runner.os == 'Linux'
+        run: .ci/after-failure.sh
 
       - name: Capture coverage data
         if: success() && matrix.ccov == 'ON'