Node.js 20 actions are deprecated. The following actions are running on Node.js 20 and may not work as expected: actions/cache@v4, actions/checkout@v4, actions/setup-dotnet@v4, actions/upload-artifact@v4. Actions will be forced to run with Node.js 24 by default starting June 16th, 2026. Node.js 20 will be removed from the runner on September 16th, 2026. Please check if updated versions of these actions are available that support Node.js 24. To opt into Node.js 24 now, set the FORCE_JAVASCRIPT_ACTIONS_TO_NODE24=true environment variable on the runner or in your workflow file. Once Node.js 24 becomes the default, you can temporarily opt out by setting ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION=true. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Possible null reference argument for parameter 'user' in 'Task UserStatsRanksService.SortedSetAddOrUpdateUserStats(UserStats stats, User user)'.

Possible null reference argument for parameter 'user' in 'Task<double> CalculatorService.CalculateUserWeightedPerformance(User user, GameMode mode)'.

Dereference of a possibly null reference.

Dereference of a possibly null reference.

Argument of type 'List<User?>' cannot be used for parameter 'users' of type 'List<User>' in 'Task<(Dictionary<int, long>, Dictionary<int, long>)> UserStatsRanksService.GetUsersRanks(List<User> users, GameMode mode, CancellationToken ct = default(CancellationToken))' due to differences in the nullability of reference types.

Possible null reference argument for parameter 's' in 'DateTime DateTime.Parse(string s)'.

Possible null reference return.

Possible null reference return.

'OsuVersion' defines operator == or operator != but does not override Object.GetHashCode()