diff --git a/.github/workflows/integrationtest.yml b/.github/workflows/integrationtest.yml
index 1f55a3b3..e82d4e48 100644
--- a/.github/workflows/integrationtest.yml
+++ b/.github/workflows/integrationtest.yml
@@ -10,6 +10,12 @@ on:
   # Allow manually triggering the workflow.
   workflow_dispatch:
 
+# Cancels all previous workflow runs for the same branch that have not yet completed.
+concurrency:
+  # The concurrency group contains the workflow name and the branch name.
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   test:
     runs-on: ubuntu-latest
@@ -145,21 +151,21 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php }}
-          ini-values: error_reporting=E_ALL, display_errors=On
+          ini-values: error_reporting=-1, display_errors=On
           coverage: none
 
       - name: 'Composer: set PHPCS version for tests'
-        run: composer require --no-update --no-scripts squizlabs/php_codesniffer:"${{ matrix.phpcs_version }}"
+        run: composer require --no-update --no-scripts squizlabs/php_codesniffer:"${{ matrix.phpcs_version }}" --no-interaction
 
       # Install PHPCompatibility 7.x/8.x for PHPCS < 2.3.
       - name: 'Composer: set PHPCompatibility version for tests (PHPCS < 2.3)'
         if: ${{ matrix.phpcompat != 'composer' }}
-        run: composer require --dev --no-update --no-scripts phpcompatibility/php-compatibility:"${{ matrix.phpcompat }}"
+        run: composer require --dev --no-update --no-scripts phpcompatibility/php-compatibility:"${{ matrix.phpcompat }}" --no-interaction
 
       # Install dependencies and handle caching in one go.
       # @link https://github.com/marketplace/actions/install-composer-dependencies
       - name: 'Install Composer dependencies'
-        uses: "ramsey/composer-install@v1"
+        uses: "ramsey/composer-install@v2"
         with:
           composer-options: --no-scripts --optimize-autoloader
 
diff --git a/.github/workflows/linting.yaml b/.github/workflows/linting.yaml
index 2f5c3fda..ab6595e3 100644
--- a/.github/workflows/linting.yaml
+++ b/.github/workflows/linting.yaml
@@ -7,11 +7,17 @@ on:
   - pull_request
   - workflow_dispatch
 
+# Cancels all previous workflow runs for the same branch that have not yet completed.
+concurrency:
+  # The concurrency group contains the workflow name and the branch name.
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   validate-composer:
     runs-on: ubuntu-18.04
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: Validate composer.json and composer.lock
         uses: "docker://composer"
         with:
@@ -20,7 +26,7 @@ jobs:
   lint-json:
     runs-on: ubuntu-18.04
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: Lint json
         uses: "docker://pipelinecomponents/jsonlint:latest"
         with:
@@ -29,20 +35,20 @@ jobs:
   yamllint:
     runs-on: ubuntu-18.04
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: Check yaml for issues
         uses: pipeline-components/yamllint@master
 
   php-codesniffer:
     runs-on: ubuntu-18.04
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: Check php for code style and php cross-version compatibility issues
         uses: pipeline-components/php-codesniffer@master
 
   lint-remark:
     runs-on: ubuntu-18.04
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: Check markdown
         uses: pipeline-components/remark-lint@master
diff --git a/.github/workflows/phplint.yml b/.github/workflows/phplint.yml
index 12c8f850..3f2d6642 100644
--- a/.github/workflows/phplint.yml
+++ b/.github/workflows/phplint.yml
@@ -8,6 +8,12 @@ on:
   # Allow manually triggering the workflow.
   - workflow_dispatch
 
+# Cancels all previous workflow runs for the same branch that have not yet completed.
+concurrency:
+  # The concurrency group contains the workflow name and the branch name.
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   phplint:
     runs-on: ubuntu-latest
@@ -32,7 +38,7 @@ jobs:
       # Install dependencies and handle caching in one go.
       # @link https://github.com/marketplace/actions/install-composer-dependencies
       - name: Install Composer dependencies
-        uses: "ramsey/composer-install@v1"
+        uses: "ramsey/composer-install@v2"
 
       - name: Lint against parse errors
         run: composer lint -- --checkstyle | cs2pr
diff --git a/.github/workflows/quicktest.yml b/.github/workflows/quicktest.yml
index f6155942..c27e5592 100644
--- a/.github/workflows/quicktest.yml
+++ b/.github/workflows/quicktest.yml
@@ -9,6 +9,12 @@ on:
   # Allow manually triggering the workflow.
   workflow_dispatch:
 
+# Cancels all previous workflow runs for the same branch that have not yet completed.
+concurrency:
+  # The concurrency group contains the workflow name and the branch name.
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   #### QUICK TEST STAGE ####
   # This is a much quicker test which only runs the integration tests against a limited set of
@@ -45,21 +51,21 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php }}
-          ini-values: error_reporting=E_ALL, display_errors=On
+          ini-values: error_reporting=-1, display_errors=On
           coverage: none
 
       - name: 'Composer: set PHPCS version for tests'
-        run: composer require --no-update --no-scripts squizlabs/php_codesniffer:"${{ matrix.phpcs_version }}"
+        run: composer require --no-update --no-scripts squizlabs/php_codesniffer:"${{ matrix.phpcs_version }}" --no-interaction
 
       # Install PHPCompatibility 7.x/8.x for PHPCS < 2.3.
       - name: 'Composer: set PHPCompatibility version for tests (PHPCS < 2.3)'
         if: ${{ matrix.phpcompat != 'composer' }}
-        run: composer require --dev --no-update --no-scripts phpcompatibility/php-compatibility:"${{ matrix.phpcompat }}"
+        run: composer require --dev --no-update --no-scripts phpcompatibility/php-compatibility:"${{ matrix.phpcompat }}" --no-interaction
 
       # Install dependencies and handle caching in one go.
       # @link https://github.com/marketplace/actions/install-composer-dependencies
       - name: 'Install Composer dependencies'
-        uses: "ramsey/composer-install@v1"
+        uses: "ramsey/composer-install@v2"
         with:
           composer-options: --no-scripts --optimize-autoloader
 
diff --git a/.github/workflows/securitycheck.yml b/.github/workflows/securitycheck.yml
index 3800428e..79a56e3e 100644
--- a/.github/workflows/securitycheck.yml
+++ b/.github/workflows/securitycheck.yml
@@ -8,6 +8,12 @@ on:
   # Allow manually triggering the workflow.
   - workflow_dispatch
 
+# Cancels all previous workflow runs for the same branch that have not yet completed.
+concurrency:
+  # The concurrency group contains the workflow name and the branch name.
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   security-check:
     runs-on: ubuntu-latest
@@ -30,13 +36,13 @@ jobs:
       # Install dependencies and handle caching in one go.
       # @link https://github.com/marketplace/actions/install-composer-dependencies
       - name: Install Composer dependencies
-        uses: "ramsey/composer-install@v1"
+        uses: "ramsey/composer-install@v2"
 
       - name: Download security checker
-        run: wget -P . https://github.com/fabpot/local-php-security-checker/releases/download/v1.0.0/local-php-security-checker_1.0.0_linux_amd64
+        run: wget -P . https://github.com/fabpot/local-php-security-checker/releases/download/v1.2.0/local-php-security-checker_1.2.0_linux_amd64
 
       - name: Make security checker executable
-        run: chmod +x ./local-php-security-checker_1.0.0_linux_amd64
+        run: chmod +x ./local-php-security-checker_1.2.0_linux_amd64
 
       - name: Check against insecure dependencies
-        run: ./local-php-security-checker_1.0.0_linux_amd64 --path=composer.lock
+        run: ./local-php-security-checker_1.2.0_linux_amd64 --path=composer.lock
diff --git a/src/Plugin.php b/src/Plugin.php
index 93ea7290..5ae09d03 100644
--- a/src/Plugin.php
+++ b/src/Plugin.php
@@ -34,7 +34,6 @@
  */
 class Plugin implements PluginInterface, EventSubscriberInterface
 {
-
     const KEY_MAX_DEPTH = 'phpcodesniffer-search-depth';
 
     const MESSAGE_ERROR_WRONG_MAX_DEPTH =