Use older symfony/process version to support PHP 7.0 and 7.1

composer.json

@@ -21,7 +21,7 @@
         "symfony/console": "^3.4",
         "symfony/debug": "^3.4",
         "symfony/yaml": "^3.4",
-        "symfony/process": "^5.0"
+        "symfony/process": "^3"
     },
     "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": "bda3c6cb822164941a9e71f909c7468a",
+    "content-hash": "260e7772b01066cf4e3ce40e4933b07a",
     "packages": [
         {
             "name": "psr/log",
@@ -300,25 +300,25 @@
         },
         {
             "name": "symfony/process",
-            "version": "v5.0.5",
+            "version": "v3.4.38",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/process.git",
-                "reference": "fd4a86dd7e36437f2fc080d8c42c7415d828a0a8"
+                "reference": "b03b02dcea26ba4c65c16a73bab4f00c186b13da"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/process/zipball/fd4a86dd7e36437f2fc080d8c42c7415d828a0a8",
-                "reference": "fd4a86dd7e36437f2fc080d8c42c7415d828a0a8",
+                "url": "https://api.github.com/repos/symfony/process/zipball/b03b02dcea26ba4c65c16a73bab4f00c186b13da",
+                "reference": "b03b02dcea26ba4c65c16a73bab4f00c186b13da",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.2.5"
+                "php": "^5.5.9|>=7.0.8"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "5.0-dev"
+                    "dev-master": "3.4-dev"
                 }
             },
             "autoload": {
@@ -345,7 +345,7 @@
             ],
             "description": "Symfony Process Component",
             "homepage": "https://symfony.com",
-            "time": "2020-02-08T17:00:58+00:00"
+            "time": "2020-02-04T08:04:52+00:00"
         },
         {
             "name": "symfony/yaml",