composer win10下卡死在 [ 2.0 版本 ]

Reading bower.json of bower-asset/yii2-pjax (v2.0.4)
Reading bower.json of bower-asset/jquery.inputmask (3.1.21)
Reading bower.json of bower-asset/jquery (1.10.1)
E:\wamp\www\yii2>composer create-project --prefer-dist yiisoft/yii2-app-basic basic
Deprecation Notice: The Composer\Package\LinkConstraint\MultiConstraint class is deprecated, use Composer\Semver\Constraint\MultiConstraint instead. in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Package/LinkConstraint/MultiConstraint.php:17
Deprecation Notice: The Composer\Package\LinkConstraint\LinkConstraintInterface interface is deprecated, use Composer\Semver\Constraint\ConstraintInterface instead. in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Package/LinkConstraint/LinkConstraintInterface.php:17
Installing yiisoft/yii2-app-basic (2.0.10)

• Installing yiisoft/yii2-app-basic (2.0.10)
  Loading from cache

Created project in basic
Loading composer repositories with package information
Updating dependencies (including require-dev)
Reading bower.json of bower-asset/jquery (1.9.0)

Created project in basic
Loading composer repositories with package information
Updating dependencies (including require-dev)

• Installing yiisoft/yii2-composer (2.0.4)
  Downloading: Connecting...

就是不走，该如何是好？
vendor目录就是更新不下来，有人知道怎么办不？