MempoolNotifiesAsync times out often. This should help.
MODIFY
WalletWasabi.Tests/UnitTests/BitcoinCore/P2pBasedTests.cs
WalletWasabi.Tests/UnitTests/BitcoinCore/P2pBasedTests.cs
@@ -3,7 +3,6 @@ using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
-using System.Threading;
using System.Threading.Tasks;
using WalletWasabi.BitcoinCore;
using WalletWasabi.BitcoinCore.Rpc;
@@ -77,7 +76,7 @@ namespace WalletWasabi.Tests.UnitTests.BitcoinCore
Task rpcBatchTask = rpcBatch.SendBatchAsync();
// Wait until the mempool service receives all the sent transactions.
- IEnumerable<SmartTransaction> mempoolSmartTxs = await eventAwaiter.WaitAsync(TimeSpan.FromSeconds(30));
+ IEnumerable<SmartTransaction> mempoolSmartTxs = await eventAwaiter.WaitAsync(TimeSpan.FromMinutes(2));
await rpcBatchTask;

MempoolNotifiesAsync times out often. This should help.