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Posted to dev@tinkerpop.apache.org by "Stephen Mallette (Jira)" <ji...@apache.org> on 2020/05/30 10:31:00 UTC
[jira] [Created] (TINKERPOP-2377) Investigate intermittent .NET GLV
test failures
Stephen Mallette created TINKERPOP-2377:
-------------------------------------------
Summary: Investigate intermittent .NET GLV test failures
Key: TINKERPOP-2377
URL: https://issues.apache.org/jira/browse/TINKERPOP-2377
Project: TinkerPop
Issue Type: Improvement
Components: dotnet
Affects Versions: 3.4.6
Reporter: Stephen Mallette
Travis builds of .NET seem instable. Some of that instability is out of our control and bound to the travis environment but I've noticed at least one odd pattern of failure around these tests:
{code}
Failures and skipped scenarios:
1) g_V_constantXnullX: Failed
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
---> System.ArgumentNullException: Value cannot be null. (Parameter 'key')
at System.Collections.Generic.Dictionary`2.FindEntry(TKey key)
at System.Collections.Generic.Dictionary`2.TryGetValue(TKey key, TValue& value)
at Gremlin.Net.Process.Traversal.Bindings.GetBoundVariable[TV](TV value) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bindings.cs:line 66
at Gremlin.Net.Process.Traversal.Bytecode.ConvertArgument(Object argument, Boolean searchBindings) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 113
at Gremlin.Net.Process.Traversal.Bytecode.FlattenArguments(Object[] arguments) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 105
at Gremlin.Net.Process.Traversal.Bytecode.AddStep(String stepName, Object[] args) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 88
at Gremlin.Net.Process.Traversal.GraphTraversal`2.Constant[E2](E2 e) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/GraphTraversal.cs:line 428
--- End of inner exception stack trace ---
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at Gremlin.Net.IntegrationTest.Gherkin.TraversalEvaluation.TraversalParser.GetTraversalFromTokens(IList`1 tokens, GraphTraversalSource g, IDictionary`2 contextParameterValues, String traversalText) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs:line 78
at Gremlin.Net.IntegrationTest.Gherkin.TraversalEvaluation.TraversalParser.GetTraversal(String traversalText, GraphTraversalSource g, IDictionary`2 contextParameterValues) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs:line 69
at Gremlin.Net.IntegrationTest.Gherkin.CommonSteps.TranslateTraversal(String traversalText) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/CommonSteps.cs:line 108
2) g_V_outE_propertyXweight_nullX: Failed
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
---> System.ArgumentNullException: Value cannot be null. (Parameter 'key')
at System.Collections.Generic.Dictionary`2.FindEntry(TKey key)
at System.Collections.Generic.Dictionary`2.TryGetValue(TKey key, TValue& value)
at Gremlin.Net.Process.Traversal.Bindings.GetBoundVariable[TV](TV value) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bindings.cs:line 66
at Gremlin.Net.Process.Traversal.Bytecode.ConvertArgument(Object argument, Boolean searchBindings) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 113
at Gremlin.Net.Process.Traversal.Bytecode.FlattenArguments(Object[] arguments) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 105
at Gremlin.Net.Process.Traversal.Bytecode.AddStep(String stepName, Object[] args) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 88
at Gremlin.Net.Process.Traversal.GraphTraversal`2.Property(Object key, Object value, Object[] keyValues) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/GraphTraversal.cs:line 1265
--- End of inner exception stack trace ---
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at Gremlin.Net.IntegrationTest.Gherkin.TraversalEvaluation.TraversalParser.GetTraversalFromTokens(IList`1 tokens, GraphTraversalSource g, IDictionary`2 contextParameterValues, String traversalText) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs:line 78
at Gremlin.Net.IntegrationTest.Gherkin.TraversalEvaluation.TraversalParser.GetTraversal(String traversalText, GraphTraversalSource g, IDictionary`2 contextParameterValues) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs:line 69
at Gremlin.Net.IntegrationTest.Gherkin.CommonSteps.TranslateTraversal(String traversalText) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/CommonSteps.cs:line 108
3) g_V_mapXconstantXnullXX: Failed
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
---> System.ArgumentNullException: Value cannot be null. (Parameter 'key')
at System.Collections.Generic.Dictionary`2.FindEntry(TKey key)
at System.Collections.Generic.Dictionary`2.TryGetValue(TKey key, TValue& value)
at Gremlin.Net.Process.Traversal.Bindings.GetBoundVariable[TV](TV value) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bindings.cs:line 66
at Gremlin.Net.Process.Traversal.Bytecode.ConvertArgument(Object argument, Boolean searchBindings) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 113
at Gremlin.Net.Process.Traversal.Bytecode.FlattenArguments(Object[] arguments) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 105
at Gremlin.Net.Process.Traversal.Bytecode.AddStep(String stepName, Object[] args) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 88
at Gremlin.Net.Process.Traversal.GraphTraversal`2.Constant[E2](E2 e) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/GraphTraversal.cs:line 428
at Gremlin.Net.Process.Traversal.__.Constant[E2](E2 a) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/__.cs:line 278
--- End of inner exception stack trace ---
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at Gremlin.Net.IntegrationTest.Gherkin.TraversalEvaluation.TraversalParser.GetTraversalFromTokens(IList`1 tokens, GraphTraversalSource g, IDictionary`2 contextParameterValues, String traversalText) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs:line 78
at Gremlin.Net.IntegrationTest.Gherkin.TraversalEvaluation.StaticTraversalParameter.GetValue() in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/StaticTraversalParameter.cs:line 64
at Gremlin.Net.IntegrationTest.Gherkin.TraversalEvaluation.TraversalParser.BuildParameters(MethodInfo method, Token token, IDictionary`2& genericParameterTypes) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs:line 247
at Gremlin.Net.IntegrationTest.Gherkin.TraversalEvaluation.TraversalParser.GetTraversalFromTokens(IList`1 tokens, GraphTraversalSource g, IDictionary`2 contextParameterValues, String traversalText) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs:line 78
at Gremlin.Net.IntegrationTest.Gherkin.TraversalEvaluation.TraversalParser.GetTraversal(String traversalText, GraphTraversalSource g, IDictionary`2 contextParameterValues) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs:line 69
at Gremlin.Net.IntegrationTest.Gherkin.CommonSteps.TranslateTraversal(String traversalText) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/CommonSteps.cs:line 108
4) g_V_hasLabelXpersonX_propertyXname_nullX: Failed
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
---> System.ArgumentNullException: Value cannot be null. (Parameter 'key')
at System.Collections.Generic.Dictionary`2.FindEntry(TKey key)
at System.Collections.Generic.Dictionary`2.TryGetValue(TKey key, TValue& value)
at Gremlin.Net.Process.Traversal.Bindings.GetBoundVariable[TV](TV value) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bindings.cs:line 66
at Gremlin.Net.Process.Traversal.Bytecode.ConvertArgument(Object argument, Boolean searchBindings) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 113
at Gremlin.Net.Process.Traversal.Bytecode.FlattenArguments(Object[] arguments) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 105
at Gremlin.Net.Process.Traversal.Bytecode.AddStep(String stepName, Object[] args) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 88
at Gremlin.Net.Process.Traversal.GraphTraversal`2.Property(Object key, Object value, Object[] keyValues) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/GraphTraversal.cs:line 1265
--- End of inner exception stack trace ---
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at Gremlin.Net.IntegrationTest.Gherkin.TraversalEvaluation.TraversalParser.GetTraversalFromTokens(IList`1 tokens, GraphTraversalSource g, IDictionary`2 contextParameterValues, String traversalText) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs:line 78
at Gremlin.Net.IntegrationTest.Gherkin.TraversalEvaluation.TraversalParser.GetTraversal(String traversalText, GraphTraversalSource g, IDictionary`2 contextParameterValues) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs:line 69
at Gremlin.Net.IntegrationTest.Gherkin.CommonSteps.TranslateTraversal(String traversalText) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/CommonSteps.cs:line 108
5) g_addVXnullX_propertyXid_nullX: Failed
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
---> System.ArgumentNullException: Value cannot be null. (Parameter 'key')
at System.Collections.Generic.Dictionary`2.FindEntry(TKey key)
at System.Collections.Generic.Dictionary`2.TryGetValue(TKey key, TValue& value)
at Gremlin.Net.Process.Traversal.Bindings.GetBoundVariable[TV](TV value) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bindings.cs:line 66
at Gremlin.Net.Process.Traversal.Bytecode.ConvertArgument(Object argument, Boolean searchBindings) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 113
at Gremlin.Net.Process.Traversal.Bytecode.FlattenArguments(Object[] arguments) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 105
at Gremlin.Net.Process.Traversal.Bytecode.AddStep(String stepName, Object[] args) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 88
at Gremlin.Net.Process.Traversal.GraphTraversalSource.AddV(ITraversal vertexLabelTraversal) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/GraphTraversalSource.cs:line 337
--- End of inner exception stack trace ---
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at Gremlin.Net.IntegrationTest.Gherkin.TraversalEvaluation.TraversalParser.GetTraversalFromTokens(IList`1 tokens, GraphTraversalSource g, IDictionary`2 contextParameterValues, String traversalText) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs:line 78
at Gremlin.Net.IntegrationTest.Gherkin.TraversalEvaluation.TraversalParser.GetTraversal(String traversalText, GraphTraversalSource g, IDictionary`2 contextParameterValues) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs:line 69
at Gremlin.Net.IntegrationTest.Gherkin.CommonSteps.TranslateTraversal(String traversalText) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/CommonSteps.cs:line 108
6) g_V_group_byXageX: Scenario ignored
7) g_injectXnull_1_3_nullX: Failed
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
---> System.ArgumentNullException: Value cannot be null. (Parameter 'key')
at System.Collections.Generic.Dictionary`2.FindEntry(TKey key)
at System.Collections.Generic.Dictionary`2.TryGetValue(TKey key, TValue& value)
at Gremlin.Net.Process.Traversal.Bindings.GetBoundVariable[TV](TV value) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bindings.cs:line 66
at Gremlin.Net.Process.Traversal.Bytecode.ConvertArgument(Object argument, Boolean searchBindings) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 113
at Gremlin.Net.Process.Traversal.Bytecode.FlattenArguments(Object[] arguments) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 105
at Gremlin.Net.Process.Traversal.Bytecode.AddStep(String stepName, Object[] args) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 88
at Gremlin.Net.Process.Traversal.GraphTraversalSource.Inject[S](S[] starts) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/GraphTraversalSource.cs:line 350
--- End of inner exception stack trace ---
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at Gremlin.Net.IntegrationTest.Gherkin.TraversalEvaluation.TraversalParser.GetTraversalFromTokens(IList`1 tokens, GraphTraversalSource g, IDictionary`2 contextParameterValues, String traversalText) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs:line 78
at Gremlin.Net.IntegrationTest.Gherkin.TraversalEvaluation.TraversalParser.GetTraversal(String traversalText, GraphTraversalSource g, IDictionary`2 contextParameterValues) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs:line 69
at Gremlin.Net.IntegrationTest.Gherkin.CommonSteps.TranslateTraversal(String traversalText) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/CommonSteps.cs:line 108
8) g_injectX10_20_null_20_10_10X_groupCountXxX_dedup_asXyX_projectXa_bX_by_byXselectXxX_selectXselectXyXXX: Failed
System.ArgumentNullException: Value cannot be null. (Parameter 'key')
at System.Collections.Generic.Dictionary`2.FindEntry(TKey key)
at System.Collections.Generic.Dictionary`2.TryGetValue(TKey key, TValue& value)
at Gremlin.Net.Process.Traversal.Bindings.GetBoundVariable[TV](TV value) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bindings.cs:line 66
at Gremlin.Net.Process.Traversal.Bytecode.ConvertArgument(Object argument, Boolean searchBindings) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 113
at Gremlin.Net.Process.Traversal.Bytecode.FlattenArguments(Object[] arguments) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 105
at Gremlin.Net.Process.Traversal.Bytecode.AddStep(String stepName, Object[] args) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 88
at Gremlin.Net.Process.Traversal.GraphTraversalSource.Inject[S](S[] starts) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/GraphTraversalSource.cs:line 350
at Gremlin.Net.IntegrationTest.Gherkin.TraversalEvaluation.TraversalParser.<>c.<.cctor>b__23_1(GraphTraversalSource g) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs:line 41
at Gremlin.Net.IntegrationTest.Gherkin.TraversalEvaluation.TraversalParser.GetTraversal(String traversalText, GraphTraversalSource g, IDictionary`2 contextParameterValues) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs:line 69
at Gremlin.Net.IntegrationTest.Gherkin.CommonSteps.TranslateTraversal(String traversalText) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/CommonSteps.cs:line 108
9) g_injectXname_marko_age_nullX_selectXname_ageX: Failed
System.ArgumentNullException: Value cannot be null. (Parameter 'key')
at System.Collections.Generic.Dictionary`2.FindEntry(TKey key)
at System.Collections.Generic.Dictionary`2.TryGetValue(TKey key, TValue& value)
at Gremlin.Net.Process.Traversal.Bindings.GetBoundVariable[TV](TV value) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bindings.cs:line 66
at Gremlin.Net.Process.Traversal.Bytecode.ConvertArgument(Object argument, Boolean searchBindings) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 113
at Gremlin.Net.Process.Traversal.Bytecode.ConvertArgument(Object argument, Boolean searchBindings) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 128
at Gremlin.Net.Process.Traversal.Bytecode.FlattenArguments(Object[] arguments) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 105
at Gremlin.Net.Process.Traversal.Bytecode.AddStep(String stepName, Object[] args) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Bytecode.cs:line 88
at Gremlin.Net.Process.Traversal.GraphTraversalSource.Inject[S](S[] starts) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/GraphTraversalSource.cs:line 350
at Gremlin.Net.IntegrationTest.Gherkin.TraversalEvaluation.TraversalParser.<>c.<.cctor>b__23_2(GraphTraversalSource g) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs:line 42
at Gremlin.Net.IntegrationTest.Gherkin.TraversalEvaluation.TraversalParser.GetTraversal(String traversalText, GraphTraversalSource g, IDictionary`2 contextParameterValues) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs:line 69
at Gremlin.Net.IntegrationTest.Gherkin.CommonSteps.TranslateTraversal(String traversalText) in /home/travis/build/apache/tinkerpop/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/CommonSteps.cs:line 108
{code}
I'm not sure if anything can be discerned from these stracktraces, but, if not, the next time they fail in this way I will be sure to grab the entire travis output.
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