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What's Changed
Do not build a held registration's pipeline early by @tillig in #1504 (fixes #1503) - a regression introduced in 9.3.3. Registering an open generic for several services (.As(typeof(IFirstService<>)).As(typeof(ISecondService<>))) threw InvalidOperationException: Component pipeline has already been built, and cannot be modified. on first resolve whenever anything attached to PipelineBuilding from the component registry's Registered event. Autofac.Extensions.DependencyInjection attaches exactly that way on every registration, so ASP.NET Core applications using a multi-service open generic registration hit it deterministically. The fix restores the ordering 9.3.2 had, where the pipeline is built only after Registered has been raised.
If you are on 9.3.3 and register an open generic against more than one service, upgrade. Thanks to @hjalle for the report and for pinning it to the exact line.
Full Changelog: v9.3.3...v9.3.4
