Microsoft.Extensions.Caching.Memory.MemoryCacheSetAndRemoveTests.OvercapacityPurge_AreThreadSafe test failure

[PranavSenthilnathan]

Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1492040
Build error leg or test failing: Microsoft.Extensions.Caching.Memory.MemoryCacheSetAndRemoveTests.OvercapacityPurge_AreThreadSafe

Error Message

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": "Microsoft.Extensions.Caching.Memory.MemoryCacheSetAndRemoveTests.OvercapacityPurge_AreThreadSafe [FAIL]",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1492040
Error message validated: [src/libraries/Microsoft.Extensions.Caching.Memory/tests/MemoryCacheSetAndRemoveTests.cs(654,0): at Microsoft.Extensions.Caching.Memory.MemoryCacheSetAndRemoveTests.OvercapacityPurge_AreThreadSafe()]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 7/2/2026 7:58:40 PM UTC

Report

Build	Repository	Test	Pull Request
1492040	dotnet/runtime	Microsoft.Extensions.Caching.Memory.MemoryCacheSetAndRemoveTests.OvercapacityPurge_AreThreadSafe	#130136

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
1	1	1

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1492040
Error message validated: [Microsoft.Extensions.Caching.Memory.MemoryCacheSetAndRemoveTests.OvercapacityPurge_AreThreadSafe [FAIL]]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 7/2/2026 9:55:16 PM UTC

Report

Build	Repository	Test	Pull Request
1492040	dotnet/runtime	Microsoft.Extensions.Caching.Memory.MemoryCacheSetAndRemoveTests.OvercapacityPurge_AreThreadSafe	#130136

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
1	1	1

Report

Build	Repository	Test	Pull Request
1492515	dotnet/runtime	Microsoft.Extensions.Caching.Memory.MemoryCacheSetAndRemoveTests.OvercapacityPurge_AreThreadSafe	#129924
1492343	dotnet/runtime	Microsoft.Extensions.Caching.Memory.MemoryCacheSetAndRemoveTests.OvercapacityPurge_AreThreadSafe	#130142
1492309	dotnet/runtime	Microsoft.Extensions.Caching.Memory.MemoryCacheSetAndRemoveTests.OvercapacityPurge_AreThreadSafe	#130137
1492040	dotnet/runtime	Microsoft.Extensions.Caching.Memory.MemoryCacheSetAndRemoveTests.OvercapacityPurge_AreThreadSafe	#130136

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
4	4	4

[dotnet-policy-service]

Tagging subscribers to this area: @dotnet/area-extensions-caching
See info in area-owners.md if you want to be subscribed.

[PranavSenthilnathan]

Likely due to #129897

[VincentBu]

Failed in: runtime-coreclr crossgen2 20260701.1

Failed tests:

net11.0-windows-Release-x64-TestReadyToRun_Release-(Windows.Nano.1809.Amd64.Open)windows.10.amd64.serverrs5.open@mcr.microsoft.com/dotnet-buildtools/prereqs:nanoserver-1809-helix-amd64@sha256:b37663ac0c14e420084a5d64fa20bd6e5d820fc4569653d6c5c2de1b7374b465
- Microsoft.Extensions.Caching.Memory.MemoryCacheSetAndRemoveTests.OvercapacityPurge_AreThreadSafe
- Microsoft.Extensions.Caching.Memory.MemoryCacheSetAndRemoveTests.OvercapacityPurge_AreThreadSafe

Error message:

System.AggregateException : One or more errors occurred. (Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5) (Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5) (Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5) (Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5) (Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5) (Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5) (Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5) (Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5) (Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5) (Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5) (Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5) (Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5)

---- Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5

---- Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5

---- Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5

---- Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5

---- Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5

---- Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5

---- Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5

---- Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5

---- Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5

---- Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5

---- Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5

---- Assert.Equal() Failure: Values differ

Expected: 7

Actual:   5

Stack trace:

   at System.RetryHelper.Execute(Action test, Int32 maxAttempts, Func`2 backoffFunc, Predicate`1 retryWhen, String testName) in /_/src/libraries/Common/tests/TestUtilities/System/RetryHelper.cs:line 54
   at Microsoft.Extensions.Caching.Memory.CapacityTests.AssertCacheSize(Int64 size, MemoryCache cache) in /_/src/libraries/Microsoft.Extensions.Caching.Memory/tests/CapacityTests.cs:line 491
   at Microsoft.Extensions.Caching.Memory.MemoryCacheSetAndRemoveTests.OvercapacityPurge_AreThreadSafe() in /_/src/libraries/Microsoft.Extensions.Caching.Memory/tests/MemoryCacheSetAndRemoveTests.cs:line 654
   at System.Reflection.MethodBaseInvoker.InterpretedInvoke_Method(Object obj, IntPtr* args)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
----- Inner Stack Trace #1 (Xunit.Sdk.EqualException) -----
   at System.RetryHelper.Execute(Action test, Int32 maxAttempts, Func`2 backoffFunc, Predicate`1 retryWhen, String testName) in /_/src/libraries/Common/tests/TestUtilities/System/RetryHelper.cs:line 45
----- Inner Stack Trace #2 (Xunit.Sdk.EqualException) -----
   at System.RetryHelper.Execute(Action test, Int32 maxAttempts, Func`2 backoffFunc, Predicate`1 retryWhen, String testName) in /_/src/libraries/Common/tests/TestUtilities/System/RetryHelper.cs:line 45
----- Inner Stack Trace #3 (Xunit.Sdk.EqualException) -----
   at System.RetryHelper.Execute(Action test, Int32 maxAttempts, Func`2 backoffFunc, Predicate`1 retryWhen, String testName) in /_/src/libraries/Common/tests/TestUtilities/System/RetryHelper.cs:line 45
----- Inner Stack Trace #4 (Xunit.Sdk.EqualException) -----
   at System.RetryHelper.Execute(Action test, Int32 maxAttempts, Func`2 backoffFunc, Predicate`1 retryWhen, String testName) in /_/src/libraries/Common/tests/TestUtilities/System/RetryHelper.cs:line 45
----- Inner Stack Trace #5 (Xunit.Sdk.EqualException) -----
   at System.RetryHelper.Execute(Action test, Int32 maxAttempts, Func`2 backoffFunc, Predicate`1 retryWhen, String testName) in /_/src/libraries/Common/tests/TestUtilities/System/RetryHelper.cs:line 45
----- Inner Stack Trace #6 (Xunit.Sdk.EqualException) -----
   at System.RetryHelper.Execute(Action test, Int32 maxAttempts, Func`2 backoffFunc, Predicate`1 retryWhen, String testName) in /_/src/libraries/Common/tests/TestUtilities/System/RetryHelper.cs:line 45
----- Inner Stack Trace #7 (Xunit.Sdk.EqualException) -----
   at System.RetryHelper.Execute(Action test, Int32 maxAttempts, Func`2 backoffFunc, Predicate`1 retryWhen, String testName) in /_/src/libraries/Common/tests/TestUtilities/System/RetryHelper.cs:line 45
----- Inner Stack Trace #8 (Xunit.Sdk.EqualException) -----
   at System.RetryHelper.Execute(Action test, Int32 maxAttempts, Func`2 backoffFunc, Predicate`1 retryWhen, String testName) in /_/src/libraries/Common/tests/TestUtilities/System/RetryHelper.cs:line 45
----- Inner Stack Trace #9 (Xunit.Sdk.EqualException) -----
   at System.RetryHelper.Execute(Action test, Int32 maxAttempts, Func`2 backoffFunc, Predicate`1 retryWhen, String testName) in /_/src/libraries/Common/tests/TestUtilities/System/RetryHelper.cs:line 45
----- Inner Stack Trace #10 (Xunit.Sdk.EqualException) -----
   at System.RetryHelper.Execute(Action test, Int32 maxAttempts, Func`2 backoffFunc, Predicate`1 retryWhen, String testName) in /_/src/libraries/Common/tests/TestUtilities/System/RetryHelper.cs:line 45
----- Inner Stack Trace #11 (Xunit.Sdk.EqualException) -----
   at System.RetryHelper.Execute(Action test, Int32 maxAttempts, Func`2 backoffFunc, Predicate`1 retryWhen, String testName) in /_/src/libraries/Common/tests/TestUtilities/System/RetryHelper.cs:line 45
----- Inner Stack Trace #12 (Xunit.Sdk.EqualException) -----
   at System.RetryHelper.Execute(Action test, Int32 maxAttempts, Func`2 backoffFunc, Predicate`1 retryWhen, String testName) in /_/src/libraries/Common/tests/TestUtilities/System/RetryHelper.cs:line 45