Cannot inject mutation error since 0.21

Describe the bug Since updating to 0.21.0 (and 21.1) from 0.20.0 Stryker fails on every run with an exception.

Logs

I’m working on the log files (the failures were on Jenkins), the exception / stack trace are:

System.InvalidOperationException: Cannot inject mutation '!(            Int64.TryParse(x.Val, out var val)
01:51:15  )' in 'new User(
01:51:15                  id: "48622c30-5900-4e49-a847-cacf922048c0",
01:51:15                  name: "User")' because we cannot find the original code.
01:51:15     at Stryker.Core.Helpers.RoslynHelper.InjectMutation[T](T original, Mutation mutation)
01:51:15     at Stryker.Core.Mutants.NodeOrchestrators.PropertyDeclarationOrchestrator.<>c__DisplayClass1_0.<InjectMutations>b__0(Mutant m)
01:51:15     at System.Linq.Enumerable.SelectEnumerableIterator`2.MoveNext()
01:51:15     at System.Linq.Enumerable.Aggregate[TSource,TAccumulate](IEnumerable`1 source, TAccumulate seed, Func`3 func)
01:51:15     at Stryker.Core.Mutants.MutantPlacer.PlaceStatementControlledMutations(StatementSyntax original, IEnumerable`1 mutations)
01:51:15     at Stryker.Core.Mutants.NodeOrchestrators.PropertyDeclarationOrchestrator.InjectMutations(PropertyDeclarationSyntax sourceNode, BasePropertyDeclarationSyntax targetNode, MutationContext context)
01:51:15     at Stryker.Core.Mutants.NodeOrchestrators.NodeSpecificOrchestrator`2.Mutate(SyntaxNode node, MutationContext context)
01:51:15     at Stryker.Core.Mutants.CsharpMutantOrchestrator.Mutate(SyntaxNode currentNode, MutationContext context)
01:51:15     at Stryker.Core.Mutants.NodeOrchestrators.NodeSpecificOrchestrator`2.<>c__DisplayClass11_0.<OrchestrateChildrenMutation>b__0(SyntaxNode original, SyntaxNode _)
01:51:15     at Microsoft.CodeAnalysis.CSharp.Syntax.SyntaxReplacer.Replacer`1.Visit(SyntaxNode node)
01:51:15     at Microsoft.CodeAnalysis.CSharp.CSharpSyntaxRewriter.VisitListElement[TNode](TNode node)
01:51:15     at Microsoft.CodeAnalysis.CSharp.CSharpSyntaxRewriter.VisitList[TNode](SyntaxList`1 list)
01:51:15     at Microsoft.CodeAnalysis.CSharp.CSharpSyntaxRewriter.VisitClassDeclaration(ClassDeclarationSyntax node)
01:51:15     at Microsoft.CodeAnalysis.CSharp.Syntax.ClassDeclarationSyntax.Accept[TResult](CSharpSyntaxVisitor`1 visitor)
01:51:15     at Microsoft.CodeAnalysis.CSharp.CSharpSyntaxRewriter.Visit(SyntaxNode node)
01:51:15     at Microsoft.CodeAnalysis.CSharp.Syntax.SyntaxReplacer.Replacer`1.Visit(SyntaxNode node)
01:51:15     at Microsoft.CodeAnalysis.CSharp.Syntax.SyntaxReplacer.Replace[TNode](SyntaxNode root, IEnumerable`1 nodes, Func`3 computeReplacementNode, IEnumerable`1 tokens, Func`3 computeReplacementToken, IEnumerable`1 trivia, Func`3 computeReplacementTrivia)
01:51:15     at Microsoft.CodeAnalysis.CSharp.CSharpSyntaxNode.ReplaceCore[TNode](IEnumerable`1 nodes, Func`3 computeReplacementNode, IEnumerable`1 tokens, Func`3 computeReplacementToken, IEnumerable`1 trivia, Func`3 computeReplacementTrivia)
01:51:15     at Microsoft.CodeAnalysis.SyntaxNodeExtensions.ReplaceNodes[TRoot,TNode](TRoot root, IEnumerable`1 nodes, Func`3 computeReplacementNode)
01:51:15     at Stryker.Core.Mutants.NodeOrchestrators.NodeSpecificOrchestrator`2.OrchestrateChildrenMutation(TNode node, MutationContext context)
01:51:15     at Stryker.Core.Mutants.NodeOrchestrators.NodeSpecificOrchestrator`2.Mutate(SyntaxNode node, MutationContext context)
01:51:15     at Stryker.Core.Mutants.CsharpMutantOrchestrator.Mutate(SyntaxNode currentNode, MutationContext context)
01:51:15     at Stryker.Core.Mutants.NodeOrchestrators.NodeSpecificOrchestrator`2.<>c__DisplayClass11_0.<OrchestrateChildrenMutation>b__0(SyntaxNode original, SyntaxNode _)
01:51:15     at Microsoft.CodeAnalysis.CSharp.Syntax.SyntaxReplacer.Replacer`1.Visit(SyntaxNode node)
01:51:15     at Microsoft.CodeAnalysis.CSharp.CSharpSyntaxRewriter.VisitListElement[TNode](TNode node)
01:51:15     at Microsoft.CodeAnalysis.CSharp.CSharpSyntaxRewriter.VisitList[TNode](SyntaxList`1 list)
01:51:15     at Microsoft.CodeAnalysis.CSharp.CSharpSyntaxRewriter.VisitNamespaceDeclaration(NamespaceDeclarationSyntax node)
01:51:15     at Microsoft.CodeAnalysis.CSharp.Syntax.NamespaceDeclarationSyntax.Accept[TResult](CSharpSyntaxVisitor`1 visitor)
01:51:15     at Microsoft.CodeAnalysis.CSharp.CSharpSyntaxRewriter.Visit(SyntaxNode node)
01:51:15     at Microsoft.CodeAnalysis.CSharp.Syntax.SyntaxReplacer.Replacer`1.Visit(SyntaxNode node)
01:51:15     at Microsoft.CodeAnalysis.CSharp.Syntax.SyntaxReplacer.Replace[TNode](SyntaxNode root, IEnumerable`1 nodes, Func`3 computeReplacementNode, IEnumerable`1 tokens, Func`3 computeReplacementToken, IEnumerable`1 trivia, Func`3 computeReplacementTrivia)
01:51:15     at Microsoft.CodeAnalysis.CSharp.CSharpSyntaxNode.ReplaceCore[TNode](IEnumerable`1 nodes, Func`3 computeReplacementNode, IEnumerable`1 tokens, Func`3 computeReplacementToken, IEnumerable`1 trivia, Func`3 computeReplacementTrivia)
01:51:15     at Microsoft.CodeAnalysis.SyntaxNodeExtensions.ReplaceNodes[TRoot,TNode](TRoot root, IEnumerable`1 nodes, Func`3 computeReplacementNode)
01:51:15     at Stryker.Core.Mutants.NodeOrchestrators.NodeSpecificOrchestrator`2.OrchestrateChildrenMutation(TNode node, MutationContext context)
01:51:15     at Stryker.Core.Mutants.NodeOrchestrators.NodeSpecificOrchestrator`2.Mutate(SyntaxNode node, MutationContext context)
01:51:15     at Stryker.Core.Mutants.CsharpMutantOrchestrator.Mutate(SyntaxNode currentNode, MutationContext context)
01:51:15     at Stryker.Core.Mutants.NodeOrchestrators.NodeSpecificOrchestrator`2.<>c__DisplayClass11_0.<OrchestrateChildrenMutation>b__0(SyntaxNode original, SyntaxNode _)
01:51:15     at Microsoft.CodeAnalysis.CSharp.Syntax.SyntaxReplacer.Replacer`1.Visit(SyntaxNode node)
01:51:15     at Microsoft.CodeAnalysis.CSharp.CSharpSyntaxRewriter.VisitListElement[TNode](TNode node)
01:51:15     at Microsoft.CodeAnalysis.CSharp.CSharpSyntaxRewriter.VisitList[TNode](SyntaxList`1 list)
01:51:15     at Microsoft.CodeAnalysis.CSharp.CSharpSyntaxRewriter.VisitCompilationUnit(CompilationUnitSyntax node)
01:51:15     at Microsoft.CodeAnalysis.CSharp.Syntax.CompilationUnitSyntax.Accept[TResult](CSharpSyntaxVisitor`1 visitor)
01:51:15     at Microsoft.CodeAnalysis.CSharp.CSharpSyntaxRewriter.Visit(SyntaxNode node)
01:51:15     at Microsoft.CodeAnalysis.CSharp.Syntax.SyntaxReplacer.Replacer`1.Visit(SyntaxNode node)
01:51:15     at Microsoft.CodeAnalysis.CSharp.Syntax.SyntaxReplacer.Replace[TNode](SyntaxNode root, IEnumerable`1 nodes, Func`3 computeReplacementNode, IEnumerable`1 tokens, Func`3 computeReplacementToken, IEnumerable`1 trivia, Func`3 computeReplacementTrivia)
01:51:15     at Microsoft.CodeAnalysis.CSharp.CSharpSyntaxNode.ReplaceCore[TNode](IEnumerable`1 nodes, Func`3 computeReplacementNode, IEnumerable`1 tokens, Func`3 computeReplacementToken, IEnumerable`1 trivia, Func`3 computeReplacementTrivia)
01:51:15     at Microsoft.CodeAnalysis.SyntaxNodeExtensions.ReplaceNodes[TRoot,TNode](TRoot root, IEnumerable`1 nodes, Func`3 computeReplacementNode)
01:51:15     at Stryker.Core.Mutants.NodeOrchestrators.NodeSpecificOrchestrator`2.OrchestrateChildrenMutation(TNode node, MutationContext context)
01:51:15     at Stryker.Core.Mutants.NodeOrchestrators.NodeSpecificOrchestrator`2.Mutate(SyntaxNode node, MutationContext context)
01:51:15     at Stryker.Core.Mutants.CsharpMutantOrchestrator.Mutate(SyntaxNode currentNode, MutationContext context)
01:51:15     at Stryker.Core.Mutants.CsharpMutantOrchestrator.Mutate(SyntaxNode input)
01:51:15     at Stryker.Core.MutationTest.CsharpMutationProcess.Mutate()
01:51:15     at Stryker.Core.MutationTest.MutationTestProcess.Mutate()
01:51:15     at Stryker.Core.Initialisation.ProjectMutator.MutateProject(IStrykerOptions options, IReporter reporters)
01:51:15     at Stryker.Core.Initialisation.ProjectOrchestrator.MutateProjects(StrykerOptions options, IReporter reporters)+MoveNext()
01:51:15     at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
01:51:15     at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
01:51:15     at Stryker.Core.StrykerRunner.RunMutationTest(StrykerOptions options, IEnumerable`1 initialLogMessages)

Expected behavior Stryker does not fail

Desktop (please complete the following information):

• OS: Debian buster
• Type of project: netcore
• Framework Version: target netcoreapp3.1, running on net5.0 sdk
• Stryker Version 0.21.0 / 0.21.1

Additional context Let me know if there’s more information I can provide. This is a closed source application so I cannot share too much details.

[dupdob]

Don’t worry: I am working on a fix.

[rouke-broersma]

@Dave-EMIS Thank you for the report! I think these logs are enough for us to investigate the issue. If not we’ll let you know!