Why can't I find System.Web.pdb on referencesource.microsoft.com?

Question

SYMSRV:  http://referencesource.microsoft.com/symbols/System.Web.pdb/E6EBD6B61CEA407591438CC4E48036891/System.Web.pdb not found

http://referencesource.microsoft.com/symbols: Symbols not found on symbol server.
SYMSRV:  System.Web.pdb from http://msdl.microsoft.com/download/symbols: 131401 bytes 

http://msdl.microsoft.com/download/symbols: Symbols downloaded from symbol server.
C:\Users\Micah\Symbols\System.Web.pdb\E6EBD6B61CEA407591438CC4E48036891\System.Web.pdb: Symbols loaded.

Notice how it was unable to find System.Web.pdb on referencesource.microsoft.com. It found it on msdl.microsoft.com but those don't come with source files/lines. I have downloaded the source code for System.Web.dll from referencesource.microsoft.com so I know the source is available. It was my understanding that referencesource.microsoft.com was supposed to have PDBs for all released versions of the .NET Framework (including patches)?

The version of System.Web.dll that is currently being loaded is the 64-bit version found in the GAC marked as version 4.0.30319.34212. It has a release date of 5/29/2014. As far as I know, it is the latest release of System.Web.dll, though if I am wrong on that I don't mind upgrading if it resolves this problem.

Answer 1

It is indexed: https://referencesource.microsoft.com/indexedpdbs.txt

And you can find the project here: https://referencesource.microsoft.com/#System.Web.Services