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Workaround solution for: https://github.com/flutter/flutter/issues/121231
See https://github.com/flutter/flutter/issues/120808#issuecomment-1551826299 Error Case 2 for more information.
Sometimes the `ios-deploy` process does not return the logs from the application. We've been unable to figure out why. This is a solution to workaround that by using `idevicesyslog` alongside `ios-deploy` as a backup in getting the log for the Dart VM url. As explained in https://github.com/flutter/flutter/issues/120808#issuecomment-1551826299, when error case 2 happens, the `idevicesyslog` does successfully find the Dart VM.
Also, in the comments of the code it mentions `syslog` is not written on iOS 13+, this was added in response to this issue: https://github.com/flutter/flutter/issues/41133.
However, `idevicesyslog` does in fact work (at least for iOS 16), we use it to collect device logs for our CI tests already:
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| .. | ||
| code_signing_test.dart | ||
| devices_test.dart | ||
| ios_deploy_test.dart | ||
| ios_device_install_test.dart | ||
| ios_device_logger_test.dart | ||
| ios_device_port_forwarder_test.dart | ||
| ios_device_project_test.dart | ||
| ios_device_start_nonprebuilt_test.dart | ||
| ios_device_start_prebuilt_test.dart | ||
| ios_project_migration_test.dart | ||
| ios_workflow_test.dart | ||
| mac_test.dart | ||
| simulators_test.dart | ||
| xcodeproj_test.dart | ||
| xcresult_test_data.dart | ||
| xcresult_test.dart | ||