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"Failed to inflate ColorStateList" when showing setup wizard

The Huawei Ascend Y330 logs the following stacktrace when showing the new setup wizard:

12-01 12:48:16.402 19705-19705/org.briarproject.briar.beta.debug E/AppCompatResources: Failed to inflate ColorStateList, leaving it to the framework
java.lang.UnsupportedOperationException: Can't convert to color: type=0x2
    at android.content.res.TypedArray.getColor(TypedArray.java:334)
    at android.support.v7.content.res.AppCompatColorStateListInflater.inflate(AppCompatColorStateListInflater.java:114)
    at android.support.v7.content.res.AppCompatColorStateListInflater.createFromXmlInner(AppCompatColorStateListInflater.java:88)
    at android.support.v7.content.res.AppCompatColorStateListInflater.createFromXml(AppCompatColorStateListInflater.java:67)
    at android.support.v7.content.res.AppCompatResources.inflateColorStateList(AppCompatResources.java:116)
    at android.support.v7.content.res.AppCompatResources.getColorStateList(AppCompatResources.java:74)
    at android.support.v7.widget.TintTypedArray.getColorStateList(TintTypedArray.java:170)
    at android.support.v7.widget.AppCompatTextHelper.onSetTextAppearance(AppCompatTextHelper.java:296)
    at android.support.v7.widget.AppCompatTextView.setTextAppearance(AppCompatTextView.java:160)
    at android.support.v4.widget.TextViewCompat$TextViewCompatBaseImpl.setTextAppearance(TextViewCompat.java:155)
    at android.support.v4.widget.TextViewCompat.setTextAppearance(TextViewCompat.java:476)
    at android.support.design.widget.TextInputLayout.setErrorEnabled(TextInputLayout.java:632)
    at android.support.design.widget.TextInputLayout.<init>(TextInputLayout.java:255)
    at android.support.design.widget.TextInputLayout.<init>(TextInputLayout.java:185)
    at java.lang.reflect.Constructor.constructNative(Native Method)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:417)
    at android.view.LayoutInflater.createView(LayoutInflater.java:587)
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:687)
    at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
    at android.view.LayoutInflater.rInflate(LayoutInflater.java:749)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
    at org.briarproject.briar.android.login.AuthorNameFragment.onCreateView(AuthorNameFragment.java:36)
    at android.support.v4.app.Fragment.performCreateView(Fragment.java:2261)
    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1419)
    at android.support.v4.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManager.java:1750)
    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1819)
    at android.support.v4.app.BackStackRecord.executeOps(BackStackRecord.java:797)
    at android.support.v4.app.FragmentManagerImpl.executeOps(FragmentManager.java:2590)
    at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2377)
    at android.support.v4.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2332)
    at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2239)
    at android.support.v4.app.FragmentManagerImpl.dispatchStateChange(FragmentManager.java:3231)
    at android.support.v4.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:3181)
    at android.support.v4.app.FragmentController.dispatchActivityCreated(FragmentController.java:192)
    at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:572)
    at android.support.v7.app.AppCompatActivity.onStart(AppCompatActivity.java:177)
    at org.briarproject.briar.android.activity.BaseActivity.onStart(BaseActivity.java:95)
    at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1167)
    at android.app.Activity.performStart(Activity.java:5221)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2337)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2416)
    at android.app.ActivityThread.access$600(ActivityThread.java:166)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1379)
    at android.os.Handler.dispatchMessage(Handler.java:107)
    at android.os.Looper.loop(Looper.java:194)

The same exception is logged for the two TextInputLayouts in the PasswordFragment.

There's no apparent issue with the appearance or behaviour of the TextInputLayouts, so this may be harmless.