I'm starting to *really* hate the new SDK

build.cake

@@ -371,7 +371,7 @@ Task("Run-Leak-Tests")
             System.IO.File.Delete(report);
         var proc = System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo
         {
-            FileName="tests\\Avalonia.LeakTests\\toolproject\\bin\\Release\\net461\\dotMemoryUnit.exe",
+            FileName="tests\\Avalonia.LeakTests\\toolproject\\bin\\dotMemoryUnit.exe",
             Arguments="-targetExecutable=\"tools\\xunit.runner.console\\tools\\xunit.console.x86.exe\" -returnTargetExitCode  -- tests\\Avalonia.LeakTests\\bin\\Release\\Avalonia.LeakTests.dll -xml tests\\Avalonia.LeakTests\\bin\\Release\\report.xml ",
             UseShellExecute = false,
         });

tests/Avalonia.LeakTests/toolproject/tool.csproj

@@ -1,5 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
   <PropertyGroup>
+    <OutputPath>$(MSBuildThisFileDirectory)\bin</OutputPath>
+    <OutDir>$(OutputPath)</OutDir>
     <TargetFrameworks>net461</TargetFrameworks>
     <OutputType>Library</OutputType>
   </PropertyGroup>