diff --git a/scripts/arcanist.php b/scripts/arcanist.php
--- a/scripts/arcanist.php
+++ b/scripts/arcanist.php
@@ -55,9 +55,6 @@
       'help'    => pht('Load a libphutil library.'),
       'repeat'  => true,
     ),
-    array(
-      'name'    => 'skip-arcconfig',
-    ),
     array(
       'name'    => 'arcrc-file',
       'param'   => 'filename',
@@ -76,17 +73,6 @@
       'name' => 'anonymous',
       'help' => pht('Run workflow as a public user, without authenticating.'),
     ),
-    array(
-      'name'    => 'conduit-version',
-      'param'   => 'version',
-      'help'    => pht(
-        '(Developers) Mock client version in protocol handshake.'),
-    ),
-    array(
-      'name'    => 'conduit-timeout',
-      'param'   => 'timeout',
-      'help'    => pht('Set Conduit timeout (in seconds).'),
-    ),
     array(
       'name'   => 'config',
       'param'  => 'key=value',
@@ -101,9 +87,6 @@
 
 $force_conduit = $base_args->getArg('conduit-uri');
 $force_token = $base_args->getArg('conduit-token');
-$force_conduit_version = $base_args->getArg('conduit-version');
-$conduit_timeout = $base_args->getArg('conduit-timeout');
-$skip_arcconfig = $base_args->getArg('skip-arcconfig');
 $custom_arcrc = $base_args->getArg('arcrc-file');
 $is_anonymous = $base_args->getArg('anonymous');
 $load = $base_args->getArg('load-phutil-library');
@@ -157,12 +140,8 @@
   $system_config = $configuration_manager->readSystemArcConfig();
   $runtime_config = $configuration_manager->applyRuntimeArcConfig($base_args);
 
-  if ($skip_arcconfig) {
-    $working_copy = ArcanistWorkingCopyIdentity::newDummyWorkingCopy();
-  } else {
-    $working_copy =
-      ArcanistWorkingCopyIdentity::newFromPath($working_directory);
-  }
+  $working_copy =
+    ArcanistWorkingCopyIdentity::newFromPath($working_directory);
   $configuration_manager->setWorkingCopyIdentity($working_copy);
 
   // Load additional libraries, which can provide new classes like configuration
@@ -221,13 +200,7 @@
   }
 
   $user_config = $configuration_manager->readUserConfigurationFile();
-
-  $config_class = $working_copy->getProjectConfig('arcanist_configuration');
-  if ($config_class) {
-    $config = new $config_class();
-  } else {
-    $config = new ArcanistConfiguration();
-  }
+  $config = new ArcanistConfiguration();
 
   $command = strtolower($args[0]);
   $args = array_slice($args, 1);
@@ -247,13 +220,6 @@
   // their behaviors.
   putenv('ARCANIST='.$command);
 
-  if ($force_conduit_version) {
-    $workflow->forceConduitVersion($force_conduit_version);
-  }
-  if ($conduit_timeout) {
-    $workflow->setConduitTimeout($conduit_timeout);
-  }
-
   $need_working_copy = $workflow->requiresWorkingCopy();
 
   $supported_vcs_types = $workflow->getSupportedRevisionControlSystems();
@@ -378,20 +344,9 @@
   );
   $workflow->setConduitCredentials($credentials);
 
-  $basic_user = $configuration_manager->getConfigFromAnySource(
-    'http.basicauth.user');
-  $basic_pass = $configuration_manager->getConfigFromAnySource(
-    'http.basicauth.pass');
-
   $engine = id(new ArcanistConduitEngine())
     ->setConduitURI($conduit_uri)
-    ->setConduitToken($conduit_token)
-    ->setBasicAuthUser($basic_user)
-    ->setBasicAuthPass($basic_pass);
-
-  if ($conduit_timeout) {
-    $engine->setConduitTimeout($conduit_timeout);
-  }
+    ->setConduitToken($conduit_token);
 
   $workflow->setConduitEngine($engine);
 
diff --git a/src/config/arc/ArcanistArcConfigurationEngineExtension.php b/src/config/arc/ArcanistArcConfigurationEngineExtension.php
--- a/src/config/arc/ArcanistArcConfigurationEngineExtension.php
+++ b/src/config/arc/ArcanistArcConfigurationEngineExtension.php
@@ -79,14 +79,6 @@
           "behind HTTPS signed by your organization's internal CA."),
         'example' => 'support/yourca.pem',
       ),
-      'https.blindly-trust-domains' => array(
-        'type' => 'list',
-        'help' => pht(
-          'List of domains to blindly trust SSL certificates for. '.
-          'Disables peer verification.'),
-        'default' => array(),
-        'example' => '["secure.mycompany.com"]',
-      ),
       'browser' => array(
         'type' => 'string',
         'help' => pht('Command to use to invoke a web browser.'),
diff --git a/src/configuration/ArcanistSettings.php b/src/configuration/ArcanistSettings.php
--- a/src/configuration/ArcanistSettings.php
+++ b/src/configuration/ArcanistSettings.php
@@ -108,14 +108,6 @@
           "behind HTTPS signed by your organization's internal CA."),
         'example' => 'support/yourca.pem',
       ),
-      'https.blindly-trust-domains' => array(
-        'type' => 'list',
-        'help' => pht(
-          'List of domains to blindly trust SSL certificates for. '.
-          'Disables peer verification.'),
-        'default' => array(),
-        'example' => '["secure.mycompany.com"]',
-      ),
       'browser' => array(
         'type' => 'string',
         'help' => pht('Command to use to invoke a web browser.'),
@@ -127,16 +119,6 @@
         'default' => array(),
         'example' => '["ExampleEventListener"]',
       ),
-      'http.basicauth.user' => array(
-        'type' => 'string',
-        'help' => pht('Username to use for basic auth over HTTP transports.'),
-        'example' => '"bob"',
-      ),
-      'http.basicauth.pass' => array(
-        'type' => 'string',
-        'help' => pht('Password to use for basic auth over HTTP transports.'),
-        'example' => '"bobhasasecret"',
-      ),
       'arc.autostash' => array(
         'type' => 'bool',
         'help' => pht(
diff --git a/src/workflow/ArcanistWorkflow.php b/src/workflow/ArcanistWorkflow.php
--- a/src/workflow/ArcanistWorkflow.php
+++ b/src/workflow/ArcanistWorkflow.php
@@ -45,7 +45,6 @@
   private $conduitURI;
   private $conduitCredentials;
   private $conduitAuthenticated;
-  private $forcedConduitVersion;
   private $conduitTimeout;
 
   private $userPHID;
@@ -319,12 +318,6 @@
       $this->conduit->setTimeout($this->conduitTimeout);
     }
 
-    $user = $this->getConfigFromAnySource('http.basicauth.user');
-    $pass = $this->getConfigFromAnySource('http.basicauth.pass');
-    if ($user !== null && $pass !== null) {
-      $this->conduit->setBasicAuthCredentials($user, $pass);
-    }
-
     return $this;
   }
 
@@ -363,24 +356,6 @@
   }
 
 
-  /**
-   * Force arc to identify with a specific Conduit version during the
-   * protocol handshake. This is primarily useful for development (especially
-   * for sending diffs which bump the client Conduit version), since the client
-   * still actually speaks the builtin version of the protocol.
-   *
-   * Controlled by the --conduit-version flag.
-   *
-   * @param int Version the client should pretend to be.
-   * @return this
-   * @task conduit
-   */
-  final public function forceConduitVersion($version) {
-    $this->forcedConduitVersion = $version;
-    return $this;
-  }
-
-
   /**
    * Get the protocol version the client should identify with.
    *
@@ -388,25 +363,7 @@
    * @task conduit
    */
   final public function getConduitVersion() {
-    return nonempty($this->forcedConduitVersion, 6);
-  }
-
-
-  /**
-   * Override the default timeout for Conduit.
-   *
-   * Controlled by the --conduit-timeout flag.
-   *
-   * @param float Timeout, in seconds.
-   * @return this
-   * @task conduit
-   */
-  final public function setConduitTimeout($timeout) {
-    $this->conduitTimeout = $timeout;
-    if ($this->conduit) {
-      $this->conduit->setConduitTimeout($timeout);
-    }
-    return $this;
+    return 6;
   }