An offline generic-type API fixture author needs which parameters must remain in...
https://detect.halowerk.com/v1/F-A-NIGHT-OS-RUST-VARIANCE/rust-generic-variance-constraint-fixedpointOverview
An offline generic-type API fixture author needs which parameters must remain invariant after changing recursive field/function/reference definitions, rather than pairwise subtyping of already-instantiated closed values.
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detect
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Indexed
2026-11-02 17:26:23
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unknown
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Input Schema
{
"body": {
"artifact": {
"rust_variance": {
"claim": 1,
"definitions": [
{
"fields": [
{
"kind": "mutable",
"target": {
"index": 0,
"kind": "param"
}
}
],
"parameters": 1
}
]
}
}
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Output Schema
{
"example": {
"billable": true,
"findings": [
{
"confidence": 100,
"evidence": [],
"limits": [
"Only the explicitly supplied bounded anonymous operand model and exact integer claim are evaluated.",
"No external resource or native system is queried or changed; source contents and contact values are not returned.",
"This is a declared-model correspondence finding without a security, legal, operational or compliance verdict."
],
"module": "rust-generic-variance-constraint-fixedpoint",
"state": "not_observed",
"value": {
"claim_matches": true,
"contravariant_parameters": 0,
"covariant_parameters": 0,
"definition_variances": [
[
3
]
],
"invariant_parameters": 1,
"parameter_occurrence_constraints": [
[
0,
0,
3,
0
]
],
"refinement_rounds": 1,
"statistic": 1,
"variance_history": [
[
[
0
]
],
[
[
3
]
]
]
},
"warnings": []
}
],
"known_count": 1,
"scope": {
"contact_values_returned": false,
"network": false,
"supplied_artifact_only": true
},
"warnings": []
},
"type": "json"
}