xcode - CocoaPods: App.xcworkspace does not exists -

this happened:

$ pod lib lint   -> mxkit (5.2.2)     - error | [ios] xcodebuild: returned unsuccessful exit code. can use `--verbose` more information.     - note  | [ios] xcodebuild:  xcodebuild: error: 'app.xcworkspace' not exist.  [!] mxkit did not pass validation, due 1 error. can use `--no-clean` option inspect issue. 

i'm using:

• cocoapods 1.0.1
• ruby 2.2.2
• xcode 8.0
• os x 10.12

by add --verbose option:

$ pod lib lint --verbose      mxkit (5.2.2) - analyzing on ios 8.0 platform.   preparing  analyzing dependencies  inspecting targets integrate   using `archs` setting build architectures of target `pods-app`: (``)  fetching external sources -> fetching podspec `mxkit` `/users/meniny/mxdevelop/mxprojects/mxkit-in-objective-c`  resolving dependencies of   comparing resolved specification sandbox manifest   mxkit  downloading dependencies  -> installing mxkit (5.2.2)   - running pre install hooks  generating pods project   - creating pods project   - adding source files pods project   - adding frameworks pods project   - adding libraries pods project   - adding resources pods project   - linking headers   - installing targets     - installing target `mxkit` ios 8.0       - generating info.plist file @       `../../../../../private/var/folders/rf/gj7xyczj0t14ggvbvh9jldf80000gn/t/cocoapods/lint/pods/target       support files/mxkit/info.plist`       - generating module map file @       `../../../../../private/var/folders/rf/gj7xyczj0t14ggvbvh9jldf80000gn/t/cocoapods/lint/pods/target       support files/mxkit/mxkit.modulemap`       - generating umbrella header @       `../../../../../private/var/folders/rf/gj7xyczj0t14ggvbvh9jldf80000gn/t/cocoapods/lint/pods/target       support files/mxkit/mxkit-umbrella.h`     - installing target `pods-app` ios 8.0       - generating info.plist file @       `../../../../../private/var/folders/rf/gj7xyczj0t14ggvbvh9jldf80000gn/t/cocoapods/lint/pods/target       support files/pods-app/info.plist`       - generating module map file @       `../../../../../private/var/folders/rf/gj7xyczj0t14ggvbvh9jldf80000gn/t/cocoapods/lint/pods/target       support files/pods-app/pods-app.modulemap`       - generating umbrella header @       `../../../../../private/var/folders/rf/gj7xyczj0t14ggvbvh9jldf80000gn/t/cocoapods/lint/pods/target       support files/pods-app/pods-app-umbrella.h`   - running post install hooks   - writing xcode project file   `../../../../../private/var/folders/rf/gj7xyczj0t14ggvbvh9jldf80000gn/t/cocoapods/lint/pods/pods.xcodeproj`   - writing lockfile in   `../../../../../var/folders/rf/gj7xyczj0t14ggvbvh9jldf80000gn/t/cocoapods/lint/podfile.lock`   - writing manifest in   `../../../../../private/var/folders/rf/gj7xyczj0t14ggvbvh9jldf80000gn/t/cocoapods/lint/pods/manifest.lock`  integrating client project  [!] please close current xcode sessions , use `app.xcworkspace` project on.  integrating target `pods-app` (`../../../../../var/folders/rf/gj7xyczj0t14ggvbvh9jldf80000gn/t/cocoapods/lint/app.xcodeproj` project)   adding build phase '[cp] embed pods frameworks' project.   adding build phase '[cp] copy pods resources' project.   adding build phase '[cp] check pods manifest.lock' project.   - running post install hooks   pod installation complete! there 1 dependency podfile , 1 total pod   installed.    building xcodebuild.  xcodebuild clean build -workspace app.xcworkspace -scheme app -configuration release code_sign_identity=- -sdk iphonesimulator -destination id=df8b8bb3-28d5-40fc-8150-7febd5be12bf 2016-09-22 18:53:33.285 xcodebuild[44725:412823] [mt] dvtpluginmanager: required plug-in compatibility uuid 8a66e736-a720-4b3c-92f1-33d9962c69df ksimagenamed.ideplugin (com.ksuther.ksimagenamed) not present build settings command line:     code_sign_identity = -     sdkroot = iphonesimulator10.0  xcodebuild: error: 'app.xcworkspace' not exist.  -> mxkit (5.2.2)     - error | [ios] xcodebuild: returned unsuccessful exit code.     - note  | [ios] xcodebuild:  xcodebuild: error: 'app.xcworkspace' not exist.  [!] mxkit did not pass validation, due 1 error. can use `--no-clean` option inspect issue.  /users/meniny/.rvm/gems/ruby-2.2.2/gems/cocoapods-1.0.1/lib/cocoapods/command/lib/lint.rb:75:in `block in run' /users/meniny/.rvm/gems/ruby-2.2.2/gems/cocoapods-1.0.1/lib/cocoapods/command/lib/lint.rb:47:in `each' /users/meniny/.rvm/gems/ruby-2.2.2/gems/cocoapods-1.0.1/lib/cocoapods/command/lib/lint.rb:47:in `run' /users/meniny/.rvm/gems/ruby-2.2.2/gems/claide-1.0.0/lib/claide/command.rb:334:in `run' /users/meniny/.rvm/gems/ruby-2.2.2/gems/cocoapods-1.0.1/lib/cocoapods/command.rb:50:in `run' /users/meniny/.rvm/gems/ruby-2.2.2/gems/cocoapods-1.0.1/bin/pod:55:in `<top (required)>' /users/meniny/.rvm/gems/ruby-2.2.2/bin/pod:23:in `load' /users/meniny/.rvm/gems/ruby-2.2.2/bin/pod:23:in `<main>' /users/meniny/.rvm/gems/ruby-2.2.2/bin/ruby_executable_hooks:15:in `eval' /users/meniny/.rvm/gems/ruby-2.2.2/bin/ruby_executable_hooks:15:in `<main>' 

today installed new system (macos sierra 10.12) parallels desktop 12, and:

• downloaded xcode 8 (and installed components)
• installed rvm 1.27.0 (latest)
• updated gem 2.6.6
• installed cocoapods 1.0.1

but pod lib lint , pod trunk push commands still doesn't work.

:(

sudo gem install cocoapods --pre 

when updated cocoapods 1.1.0.rc.2, error has gone. hope can you.