Matchfields "pops the stack" too far and tells me the name of the type, not the type

[squeedee]

In this assertion: https://github.com/squeedee/cartographer/blob/effd797484083d3bf7663fc5529c9b17821d16e7/tests/integration/runnable/runnable_test.go#L843

I use MatchFields against a struct. If the fields actually match, then this test passes, but when they don't, the FailureMessage method of the fields.go matcher tells me that the "Expected" is a string, full error below:

• Failure [2.009 seconds]
Stamping a resource on Runnable Creation
/Users/vmware/workspace/cartographer/tests/integration/runnable/runnable_test.go:37
  Latest stampedObject is the status
  /Users/vmware/workspace/cartographer/tests/integration/runnable/runnable_test.go:710
    populates the runnable.Status.outputs properly [It]
    /Users/vmware/workspace/cartographer/tests/integration/runnable/runnable_test.go:745

    Timed out after 1.000s.
    Expected
        <string>: RunnableStatus   <<< #### this should be the struct ####
    to match fields: {
    .Conditions:
    	Expected
    	    <[]v1.Condition | len:3, cap:4>: [
    	        {
    	            Type: "RunTemplateReady",
    	            Status: "True",
    	            ObservedGeneration: 0,
    	            LastTransitionTime: {
    	                Time: 2022-06-14T10:45:39-04:00,
    	            },
    	            Reason: "Ready",
    	            Message: "",
    	        },
    	        {
    	            Type: "StampedObjectReady",
    	            Status: "Unknown",
    	            ObservedGeneration: 0,
    	            LastTransitionTime: {
    	                Time: 2022-06-14T10:45:39-04:00,
    	            },
    	            Reason: "StampedObjectStatusAbsent",
    	            Message: "",
    	        },
    	        {
    	            Type: "Ready",
    	            Status: "Unknown",
    	            ObservedGeneration: 0,
    	            LastTransitionTime: {
    	                Time: 2022-06-14T10:45:39-04:00,
    	            },
    	            Reason: "StampedObjectStatusAbsent",
    	            Message: "",
    	        },
    	    ]
    	to contain elements
    	    <[]*gstruct.FieldsMatcher | len:3, cap:3>: [
    	        {
    	            Fields: {
    	                "Type": <*matchers.EqualMatcher | 0xc000537ad0>{
    	                    Expected: <string>"Ready",
    	                },
    	                "Status": <*matchers.EqualMatcher | 0xc000537ae0>{
    	                    Expected: <v1.ConditionStatus>"False",
    	                },
    	            },
    	            IgnoreExtras: true,
    	            IgnoreMissing: false,
    	            failures: [
    	                <*errors.NestedError | 0xc000ae5380>{
    	                    Path: ".Status",
    	                    Err: <*errors.errorString | 0xc0005377b0>{
    	                        s: "Expected\n    <v1.ConditionStatus>: Unknown\nto equal\n    <v1.ConditionStatus>: False",
    	                    },
    	                },
    	            ],
    	        },
    	        {
    	            Fields: {
    	                "Type": <*matchers.EqualMatcher | 0xc000537af0>{
    	                    Expected: <string>"StampedObjectReady",
    	                },
    	                "Status": <*matchers.EqualMatcher | 0xc000537b00>{
    	                    Expected: <v1.ConditionStatus>"False",
    	                },
    	            },
    	            IgnoreExtras: true,
    	            IgnoreMissing: false,
    	            failures: [
    	                <*errors.NestedError | 0xc000ae53a0>{
    	                    Path: ".Type",
    	                    Err: <*errors.errorString | 0xc0005378e0>{
    	                        s: "Expected\n    <string>: Ready\nto equal\n    <string>: StampedObjectReady",
    	                    },
    	                },
    	                <*errors.NestedError | 0xc000ae53c0>{
    	                    Path: ".Status",
    	                    Err: <*errors.errorString | 0xc0005379d0>{
    	                        s: "Expected\n    <v1.ConditionStatus>: Unknown\nto equal\n    <v1.ConditionStatus>: False",
    	                    },
    	                },
    	            ],
    	        },
    	        {
    	            Fields: {
    	                "Type": <*matchers.EqualMatcher | 0xc000537b10>{
    	                    Expected: <string>"RunTemplateReady",
    	                },
    	                "Status": <*matchers.EqualMatcher | 0xc000537b20>{
    	                    Expected: <v1.ConditionStatus>"True",
    	                },
    	            },
    	            IgnoreExtras: true,
    	            IgnoreMissing: false,
    	            failures: [
    	                <*errors.NestedError | 0xc000ae5400>{
    	                    Path: ".Type",
    	                    Err: <*errors.errorString | 0xc000537c50>{
    	                        s: "Expected\n    <string>: Ready\nto equal\n    <string>: RunTemplateReady",
    	                    },
    	                },
    	                <*errors.NestedError | 0xc000ae5420>{
    	                    Path: ".Status",
    	                    Err: <*errors.errorString | 0xc000537d40>{
    	                        s: "Expected\n    <v1.ConditionStatus>: Unknown\nto equal\n    <v1.ConditionStatus>: True",
    	                    },
    	                },
    	            ],
    	        },
    	    ]
    	the missing elements were
    	    <[]*gstruct.FieldsMatcher | len:2, cap:2>: [
    	        {
    	            Fields: {
    	                "Type": <*matchers.EqualMatcher | 0xc000537ad0>{
    	                    Expected: <string>"Ready",
    	                },
    	                "Status": <*matchers.EqualMatcher | 0xc000537ae0>{
    	                    Expected: <v1.ConditionStatus>"False",
    	                },
    	            },
    	            IgnoreExtras: true,
    	            IgnoreMissing: false,
    	            failures: [
    	                <*errors.NestedError | 0xc000ae5380>{
    	                    Path: ".Status",
    	                    Err: <*errors.errorString | 0xc0005377b0>{
    	                        s: "Expected\n    <v1.ConditionStatus>: Unknown\nto equal\n    <v1.ConditionStatus>: False",
    	                    },
    	                },
    	            ],
    	        },
    	        {
    	            Fields: {
    	                "Status": <*matchers.EqualMatcher | 0xc000537b00>{
    	                    Expected: <v1.ConditionStatus>"False",
    	                },
    	                "Type": <*matchers.EqualMatcher | 0xc000537af0>{
    	                    Expected: <string>"StampedObjectReady",
    	                },
    	            },
    	            IgnoreExtras: true,
    	            IgnoreMissing: false,
    	            failures: [
    	                <*errors.NestedError | 0xc000ae53a0>{
    	                    Path: ".Type",
    	                    Err: <*errors.errorString | 0xc0005378e0>{
    	                        s: "Expected\n    <string>: Ready\nto equal\n    <string>: StampedObjectReady",
    	                    },
    	                },
    	                <*errors.NestedError | 0xc000ae53c0>{
    	                    Path: ".Status",
    	                    Err: <*errors.errorString | 0xc0005379d0>{
    	                        s: "Expected\n    <v1.ConditionStatus>: Unknown\nto equal\n    <v1.ConditionStatus>: False",
    	                    },
    	                },
    	            ],
    	        },
    	    ]
    }
    

    /Users/vmware/workspace/cartographer/tests/integration/runnable/runnable_test.go:847