Pin symfony/debug to ^3.4

composer.json

@@ -19,6 +19,7 @@
         "php": ">=7",
         "ext-mbstring": "*",
         "symfony/console": "^3.4",
+        "symfony/debug": "^3.4",
         "symfony/yaml": "^3.4"
     },
     "bin": ["bin/logchecker"]

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "48707cdd1b94a97eec608265a353ca7c",
+    "content-hash": "e1ff3740cf810891df5e6e67a8e72ebf",
     "packages": [
         {
             "name": "psr/log",
@@ -124,32 +124,32 @@
         },
         {
             "name": "symfony/debug",
-            "version": "v4.1.8",
+            "version": "v3.4.19",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/debug.git",
-                "reference": "f9eea0cff99d14f97d69b24b17164098ece3fd32"
+                "reference": "2016b3eec2e49c127dd02d0ef44a35c53181560d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/debug/zipball/f9eea0cff99d14f97d69b24b17164098ece3fd32",
-                "reference": "f9eea0cff99d14f97d69b24b17164098ece3fd32",
+                "url": "https://api.github.com/repos/symfony/debug/zipball/2016b3eec2e49c127dd02d0ef44a35c53181560d",
+                "reference": "2016b3eec2e49c127dd02d0ef44a35c53181560d",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.1.3",
+                "php": "^5.5.9|>=7.0.8",
                 "psr/log": "~1.0"
             },
             "conflict": {
-                "symfony/http-kernel": "<3.4"
+                "symfony/http-kernel": ">=2.3,<2.3.24|~2.4.0|>=2.5,<2.5.9|>=2.6,<2.6.2"
             },
             "require-dev": {
-                "symfony/http-kernel": "~3.4|~4.0"
+                "symfony/http-kernel": "~2.8|~3.0|~4.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.1-dev"
+                    "dev-master": "3.4-dev"
                 }
             },
             "autoload": {
@@ -176,7 +176,7 @@
             ],
             "description": "Symfony Debug Component",
             "homepage": "https://symfony.com",
-            "time": "2018-11-11T19:51:29+00:00"
+            "time": "2018-11-11T19:48:54+00:00"
         },
         {
             "name": "symfony/polyfill-ctype",