Code not getting hot swapped in emulator

everything was working fine, suddenly hot swap of code is not working. after i change anything in the code and rebuild and launch, console flashes this error:

Installation error: INSTALL_FAILED_CONTAINER_ERROR Please check logcat output for more details. Launch canceled!

here is the logcat:

I have to again and again resstart emulator to see my changes! 开发者_运维技巧I have tried restarting adb, wipe user data but :(

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ok from the logcat as it says could not delete "some" file, i went to the file explorer and deleted that file manually. Works now! ;)