Xcode log "Writing analzed variants"

Question

Running Xcode 13 I see the following log when launching my iOS app in the Simulator:

Writing analzed variants.

Note that this is, hopefully, a misspelling of the log:

Writing analyzed variants.

What is causing this log noise? Is something in my code triggering it?

How can I hide this "Writing analzed variants." Xcode log?

Answer 1

For me this issue warning coming because of keyboard was not working in my simulator, I have made some mistakes in my code in SceneDelegate for window initialisation, but once I have removed that line of code this message not showing in log/consol

these 2 lines I have removed from SceneDelegate, these two lines created this issue for me

let windowScene = UIWindowScene(session: session, connectionOptions: connectionOptions)
self.window = UIWindow(windowScene: windowScene)

So I have removed these from SceneDelegate

for SceneDelegate Code and the keybaord issue see this

Answer 2

According to Quinn “The Eskimo!” at Apple Developer Technical Support, this message is Xcode log noise and can be ignored.

An Apple bug report should be filed to help flag and silence the log.

• https://developers.apple.com/forums/thread/689066
• https://developer.apple.com/forums/thread/115461

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It’s important to keep an eye on log messages and fix any obvious problems they call out. However, if you see a log message that’s not obviously your fault, it could just be log noise.

There are two criteria you should apply here:

• Is the log message associated with a specific failure? That is, when you see the log message, do you also see other problems?
• Is the log message written in terms you understand? That is, does it reference APIs or data that you’re using?

If the answer to both of these questions is “No”, it’s reasonable to conclude that the log message is just noise and you can ignore it. If you find it to be particularly irksome, file a bug report requesting that it be silenced.

Answer 3

This was annoying me because the log lines seemed to be causing a delay, which made my UI feel sluggish. I tried a number of ways to speed up my segue code before seeing the lines in the log and thinking they might be taking time.

I was using a custom keyboard which didn't have an equivalent in iOS, and I'd left "Use the Same Keyboard Language as macOS" selected in the Input > Keyboard menu. Turning that off got rid of the logging, and fixed the associated slowdown.