azure-pipelines-tasks: msbuild.exe fails randomly with exit code -1

Last couple days, we are seeing random errors using Hosted VS2017 build agent tasks. Our build includes all of the following:

• Sql Proeject (dacpac)
• asp.net mvc4 project
• asp.net web forms project
• asp.net core web project

failures are random as to which it fails on, but always just seem to be abrupt immediate return of -1.

exact same source has shown the following failures (in different retries of the build):

(on the sql project) 2017-05-09T14:39:27.0162445Z PrepareForBuild: 2017-05-09T14:39:27.0542610Z Creating directory "bin\Release\". 2017-05-09T14:39:27.0552617Z Creating directory "obj\Release\". 2017-05-09T14:39:27.0562622Z CoreCompile: 2017-05-09T14:39:27.0562622Z C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\15.0\Bin\Roslyn\csc.exe /noconfig /nowarn:1701,1702 /nostdlib+ /errorreport:prompt /warn:4 /define:TRACE /highentropyva+ /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\mscorlib.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.Data.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.Xml.dll" /debug:pdbonly /optimize+ /out:obj\Release\PracticeEngine.Database.dll /ruleset:"C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Team Tools\Static Analysis Tools\\Rule Sets\MinimumRecommendedRules.ruleset" /subsystemversion:6.00 /target:library /warnaserror- /utf8output "C:\a\_temp\.NETFramework,Version=v4.6.1.SqlClrAttributes.cs" 2017-05-09T14:39:27.0662663Z Using shared compilation with compiler from directory: C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\15.0\Bin\Roslyn 2017-05-09T14:39:28.5125683Z SqlBuild: 2017-05-09T14:39:28.5125683Z Creating a model to represent the project... 2017-05-09T14:39:30.0411754Z Loading project references... 2017-05-09T14:39:31.4858210Z Loading project files... 2017-05-09T14:39:35.6346146Z ##[error]Process 'msbuild.exe' exited with code '-1'.

(on the web forms project) 017-05-09T10:44:55.3929685Z Adding file (C:\a\1\s\Releases\9.6\Classic\Websites\PracEng\obj\Release\Package\PackageTmp\bin\System.Web.Razor.dll). 2017-05-09T10:44:55.4189665Z Adding file (C:\a\1\s\Releases\9.6\Classic\Websites\PracEng\obj\Release\Package\PackageTmp\bin\System.Web.WebPages.Deployment.dll). 2017-05-09T10:44:55.4229665Z Adding file (C:\a\1\s\Releases\9.6\Classic\Websites\PracEng\obj\Release\Package\PackageTmp\bin\System.Web.WebPages.dll). 2017-05-09T10:44:55.4409651Z Adding file (C:\a\1\s\Releases\9.6\Classic\Websites\PracEng\obj\Release\Package\PackageTmp\bin\System.Web.WebPages.Razor.dll). 2017-05-09T10:44:55.4439648Z Adding file (C:\a\1\s\Releases\9.6\Classic\Websites\PracEng\obj\Release\Package\PackageTmp\bin\Telerik.Web.UI.dll). 2017-05-09T10:44:56.7588905Z Adding file (C:\a\1\s\Releases\9.6\Classic\Websites\PracEng\obj\Release\Package\PackageTmp\bin\Telerik.Web.UI.Skins.dll). 2017-05-09T10:44:57.4008408Z ##[error]Process 'msbuild.exe' exited with code '-1'.

(on the mvc 4 project) 2017-05-09T10:50:10.0370603Z Done Building Project "C:\a\1\s\Releases\9.6\PE.Storage.Interfaces\PE.Storage.Interfaces.csproj" (default targets). 2017-05-09T10:50:11.1260927Z CoreResGen: 2017-05-09T10:50:11.1260927Z "C:\Program Files (x86)\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.6.1 Tools\resgen.exe" /useSourcePath /r:C:\a\1\s\Releases\9.6\packages\AutoMapper.4.1.1\lib\net45\AutoMapper.dll /r:C:\a\1\s\Releases\9.6\packages\CsvHelper.2.13.5.0\lib\net40-client\CsvHelper.dll /r:C:\a\1\s\Releases\9.6\packages\EntityFramework.6.1.2\lib\net45\EntityFramework.dll /r:C:\a\1\s\Releases\9.6\packages\EntityFramework.6.1.2\lib\net45\EntityFramework.SqlServer.dll /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Microsoft.CSharp.dll" /r:C:\a\1\s\Releases\9.6\packages\Unity.3.5.1404.0\lib\net45\Microsoft.Practices.Unity.Configuration.dll /r:C:\a\1\s\Releases\9.6\packages\Unity.3.5.1404.0\lib\net45\Microsoft.Practices.Unity.dll /r:C:\a\1\s\Releases\9.6\packages\Unity.3.5.1404.0\lib\net45\Microsoft.Practices.Unity.RegistrationByConvention.dll /r:C:\a\1\s\Releases\9.6\packages\Microsoft.Web.Infrastructure.1.0.0.0\lib\net40\Microsoft.Web.Infrastructure.dll /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\mscorlib.dll" /r:C:\a\1\s\Releases\9.6\packages\Newtonsoft.Json.7.0.1\lib\net45\Newtonsoft.Json.dll /r:C:\a\1\s\Releases\9.6\PE.CacheProvider.Interfaces\bin\Release\PE.CacheProvider.Interfaces.dll /r:C:\a\1\s\Releases\9.6\PE.Dal.Interfaces\bin\Release\PE.Dal.Interfaces.dll /r:C:\a\1\s\Releases\9.6\PE.Data\bin\Release\PE.Data.dll /r:C:\a\1\s\Releases\9.6\PE.DoubleMetaphone\bin\Release\PE.DoubleMetaphone.dll /r:C:\a\1\s\Releases\9.6\PE.References\bin\Release\PE.References.dll /r:C:\a\1\s\Releases\9.6\PE.ReportEngine.Interfaces\bin\Release\PE.ReportEngine.Interfaces.dll /r:C:\a\1\s\Releases\9.6\PE.Services.Interfaces\bin\Release\PE.Services.Interfaces.dll /r:C:\a\1\s\Releases\9.6\PE.Storage.Interfaces\bin\Release\PE.Storage.Interfaces.dll /r:C:\a\1\s\Releases\9.6\PE.TaskRunner.Interfaces\bin\Release\PE.TaskRunner.Interfaces.dll /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.ComponentModel.DataAnnotations.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.Configuration.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.Core.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.Data.DataSetExtensions.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.Data.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.Drawing.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.Web.ApplicationServices.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.Web.dll" /r:C:\a\1\s\Releases\9.6\packages\Microsoft.AspNet.WebPages.3.2.2\lib\net45\System.Web.Helpers.dll /r:C:\a\1\s\Releases\9.6\packages\Microsoft.AspNet.Razor.3.2.2\lib\net45\System.Web.Razor.dll /r:C:\a\1\s\Releases\9.6\packages\Microsoft.AspNet.WebPages.3.2.2\lib\net45\System.Web.WebPages.Deployment.dll /r:C:\a\1\s\Releases\9.6\packages\Microsoft.AspNet.WebPages.3.2.2\lib\net45\System.Web.WebPages.dll /r:C:\a\1\s\Releases\9.6\packages\Microsoft.AspNet.WebPages.3.2.2\lib\net45\System.Web.WebPages.Razor.dll /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.Windows.Forms.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.Xml.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.Xml.Linq.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Collections.Concurrent.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Collections.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.ComponentModel.Annotations.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.ComponentModel.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.ComponentModel.EventBasedAsync.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Diagnostics.Contracts.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Diagnostics.Debug.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Diagnostics.Tools.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Diagnostics.Tracing.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Dynamic.Runtime.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Globalization.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.IO.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Linq.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Linq.Expressions.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Linq.Parallel.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Linq.Queryable.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Net.NetworkInformation.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Net.Primitives.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Net.Requests.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Net.WebHeaderCollection.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.ObjectModel.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Reflection.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Reflection.Emit.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Reflection.Emit.ILGeneration.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Reflection.Emit.Lightweight.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Reflection.Extensions.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Reflection.Primitives.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Resources.ResourceManager.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Runtime.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Runtime.Extensions.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Runtime.Handles.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Runtime.InteropServices.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Runtime.InteropServices.WindowsRuntime.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Runtime.Numerics.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Runtime.Serialization.Json.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Runtime.Serialization.Primitives.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Runtime.Serialization.Xml.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Security.Principal.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.ServiceModel.Duplex.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.ServiceModel.Http.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.ServiceModel.NetTcp.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.ServiceModel.Primitives.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.ServiceModel.Security.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Text.Encoding.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Text.Encoding.Extensions.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Text.RegularExpressions.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Threading.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Threading.Tasks.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Threading.Tasks.Parallel.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Threading.Timer.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Xml.ReaderWriter.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Xml.XDocument.dll" /r:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Xml.XmlSerializer.dll" /compile Base64Types.resx,obj\Release\PE.Services.Base64Types.resources 2017-05-09T10:50:11.1290971Z Processing resource file "Base64Types.resx" into "obj\Release\PE.Services.Base64Types.resources". 2017-05-09T10:50:11.1440899Z GenerateTargetFrameworkMonikerAttribute: 2017-05-09T10:50:11.1450900Z Skipping target "GenerateTargetFrameworkMonikerAttribute" because all output files are up-to-date with respect to the input files. 2017-05-09T10:50:11.1500903Z CoreCompile: 2017-05-09T10:50:11.1510897Z C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\15.0\Bin\Roslyn\csc.exe /noconfig /nowarn:1701,1702 /nostdlib+ /errorreport:prompt /warn:4 /define:TRACE /highentropyva+ /reference:C:\a\1\s\Releases\9.6\packages\AutoMapper.4.1.1\lib\net45\AutoMapper.dll /reference:C:\a\1\s\Releases\9.6\packages\CsvHelper.2.13.5.0\lib\net40-client\CsvHelper.dll /reference:C:\a\1\s\Releases\9.6\packages\EntityFramework.6.1.2\lib\net45\EntityFramework.dll /reference:C:\a\1\s\Releases\9.6\packages\EntityFramework.6.1.2\lib\net45\EntityFramework.SqlServer.dll /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Microsoft.CSharp.dll" /reference:C:\a\1\s\Releases\9.6\packages\Unity.3.5.1404.0\lib\net45\Microsoft.Practices.Unity.Configuration.dll /reference:C:\a\1\s\Releases\9.6\packages\Unity.3.5.1404.0\lib\net45\Microsoft.Practices.Unity.dll /reference:C:\a\1\s\Releases\9.6\packages\Unity.3.5.1404.0\lib\net45\Microsoft.Practices.Unity.RegistrationByConvention.dll /reference:C:\a\1\s\Releases\9.6\packages\Microsoft.Web.Infrastructure.1.0.0.0\lib\net40\Microsoft.Web.Infrastructure.dll /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\mscorlib.dll" /reference:C:\a\1\s\Releases\9.6\packages\Newtonsoft.Json.7.0.1\lib\net45\Newtonsoft.Json.dll /reference:C:\a\1\s\Releases\9.6\PE.CacheProvider.Interfaces\bin\Release\PE.CacheProvider.Interfaces.dll /reference:C:\a\1\s\Releases\9.6\PE.Dal.Interfaces\bin\Release\PE.Dal.Interfaces.dll /reference:C:\a\1\s\Releases\9.6\PE.Data\bin\Release\PE.Data.dll /reference:C:\a\1\s\Releases\9.6\PE.DoubleMetaphone\bin\Release\PE.DoubleMetaphone.dll /reference:C:\a\1\s\Releases\9.6\PE.References\bin\Release\PE.References.dll /reference:C:\a\1\s\Releases\9.6\PE.ReportEngine.Interfaces\bin\Release\PE.ReportEngine.Interfaces.dll /reference:C:\a\1\s\Releases\9.6\PE.Services.Interfaces\bin\Release\PE.Services.Interfaces.dll /reference:C:\a\1\s\Releases\9.6\PE.Storage.Interfaces\bin\Release\PE.Storage.Interfaces.dll /reference:C:\a\1\s\Releases\9.6\PE.TaskRunner.Interfaces\bin\Release\PE.TaskRunner.Interfaces.dll /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.ComponentModel.DataAnnotations.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.Configuration.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.Core.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.Data.DataSetExtensions.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.Data.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.Drawing.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.Web.ApplicationServices.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.Web.dll" /reference:C:\a\1\s\Releases\9.6\packages\Microsoft.AspNet.WebPages.3.2.2\lib\net45\System.Web.Helpers.dll /reference:C:\a\1\s\Releases\9.6\packages\Microsoft.AspNet.Razor.3.2.2\lib\net45\System.Web.Razor.dll /reference:C:\a\1\s\Releases\9.6\packages\Microsoft.AspNet.WebPages.3.2.2\lib\net45\System.Web.WebPages.Deployment.dll /reference:C:\a\1\s\Releases\9.6\packages\Microsoft.AspNet.WebPages.3.2.2\lib\net45\System.Web.WebPages.dll /reference:C:\a\1\s\Releases\9.6\packages\Microsoft.AspNet.WebPages.3.2.2\lib\net45\System.Web.WebPages.Razor.dll /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.Windows.Forms.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.Xml.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.Xml.Linq.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Collections.Concurrent.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Collections.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.ComponentModel.Annotations.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.ComponentModel.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.ComponentModel.EventBasedAsync.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Diagnostics.Contracts.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Diagnostics.Debug.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Diagnostics.Tools.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Diagnostics.Tracing.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Dynamic.Runtime.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Globalization.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.IO.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Linq.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Linq.Expressions.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Linq.Parallel.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Linq.Queryable.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Net.NetworkInformation.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Net.Primitives.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Net.Requests.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Net.WebHeaderCollection.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.ObjectModel.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Reflection.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Reflection.Emit.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Reflection.Emit.ILGeneration.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Reflection.Emit.Lightweight.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Reflection.Extensions.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Reflection.Primitives.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Resources.ResourceManager.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Runtime.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Runtime.Extensions.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Runtime.Handles.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Runtime.InteropServices.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Runtime.InteropServices.WindowsRuntime.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Runtime.Numerics.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Runtime.Serialization.Json.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Runtime.Serialization.Primitives.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Runtime.Serialization.Xml.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Security.Principal.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.ServiceModel.Duplex.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.ServiceModel.Http.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.ServiceModel.NetTcp.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.ServiceModel.Primitives.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.ServiceModel.Security.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Text.Encoding.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Text.Encoding.Extensions.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Text.RegularExpressions.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Threading.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Threading.Tasks.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Threading.Tasks.Parallel.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Threading.Timer.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Xml.ReaderWriter.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Xml.XDocument.dll" /reference:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\Facades\System.Xml.XmlSerializer.dll" /debug:pdbonly /filealign:512 /optimize+ /out:obj\Release\PE.Services.dll /ruleset:"C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Team Tools\Static Analysis Tools\\Rule Sets\MinimumRecommendedRules.ruleset" /subsystemversion:6.00 /resource:obj\Release\PE.Services.Base64Types.resources /target:library /utf8output Admin\AdminPasswordService.cs Admin\SystemOptionService.cs Clients\ClientOriginationService.cs Engine\BlobService.cs Expenses\AllocationService.cs Expenses\DisbursementsGridService.cs Expenses\ClaimsGridService.cs Expenses\DisbursementBatchService.cs Expenses\ExpenseClaimService.cs Expenses\ReceiptsService.cs Integration\IntegrationImportStatusService.cs Integration\IntegrationExportStatusService.cs MappingProfiles\AdminMappingProfile.cs MappingProfiles\ClientMappingProfile.cs MappingProfiles\ExpenseMappingProfile.cs MappingProfiles\ReportEngineMappingProfile.cs MappingProfiles\StaffMappingProfile.cs MappingProfiles\TimesheetMappingProfile.cs MaskingService.cs Email\EmailStatusService.cs PESystem\TaggingService.cs Properties\AssemblyInfo.cs AttributeServiceBase.cs GridServiceOfT.cs Admin\AlertService.cs Admin\AdminService.cs Assurance\AssuranceContactAttributeService.cs Assurance\AssuranceClientAttributeService.cs Assurance\AssuranceDetailService.cs Assurance\AssuranceQuestionnaireService.cs Assurance\AssuranceRequestService.cs Clients\ClientServiceService.cs Clients\ClientsService.cs Contacts\ContactsService.cs Dashlets\DashletService.cs Fees\FeeService.cs Jobs\JobDetailsService.cs Jobs\JobsService.cs Jobs\JobTaxService.cs Email\SendMailService.cs Engine\ClientService.cs Engine\ContactService.cs Engine\LookupService.cs Engine\StaffLoginService.cs Lockout\LockoutService.cs MappingProfiles\AssuranceMappingProfile.cs MappingProfiles\JobMappingProfile.cs Prospects\ProspectAttributeService.cs Prospects\ProspectsService.cs Questionnaires\QuestionnaireService.cs ReportEngine\ReportEngineService.cs ReportEngine\ReportService.cs Schedules\ScheduleService.cs Security\DataSecurityService.cs Security\PermissionsService.cs Security\PEWebSecurity.cs Security\RolesWrapper.cs Security\TicketService.cs Security\UserInfoService.cs Staff\StaffFavouritesService.cs Staff\StaffService.cs PESystem\GradeDefaultService.cs PESystem\LicenceService.cs PESystem\StoredProcedureService.cs PESystem\DashboardService.cs PESystem\MenuService.cs Timesheets\TimesheetApprovalService.cs Timesheets\TimesheetJobGridService.cs Timesheets\TimesheetEntryGridService.cs Timesheets\TimesheetHeaderAdminGridService.cs Timesheets\TimesheetAdminService.cs Timesheets\TimesheetExtenderService.cs Timesheets\TimesheetPostingGridService.cs Timesheets\TimesheetService.cs Timesheets\TimesheetWeeklyGridService.cs Utils\ErrorLogService.cs Utils\ErrorLogGridService.cs Utils\MimeTypeMappingService.cs Utils\ThumbnailCreatorService.cs "C:\a\_temp\.NETFramework,Version=v4.6.1.AssemblyAttributes.cs" 2017-05-09T10:50:11.1540893Z Using shared compilation with compiler from directory: C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\15.0\Bin\Roslyn 2017-05-09T10:50:11.6400930Z ##[error]Process 'msbuild.exe' exited with code '-1'.

Not sure if it’s a task issue or an environment issue, but it’s a major problem for us at the moment!