cargo-semver-checks 0.8.0

Scan your Rust crate for semver violations.
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SemverQuery(
    id: "sized_impl_removed",
    human_readable_name: "Sized no longer implemented",
    description: "A public type is no longer Sized.",
    required_update: Major,
    // TODO: Add a better reference link once the cargo semver reference has a section on Sized.
    reference_link: Some("https://doc.rust-lang.org/reference/special-types-and-traits.html#sized"),
    query: r#"
    {
        CrateDiff {
            baseline {
                item {
                    ... on ImplOwner {
                        visibility_limit @filter(op: "=", value: ["$public"]) @output
                        name @output @tag

                        importable_path {
                            path @output @tag
                        }

                        # rustdoc JSON currently *does not* explicitly state that Sized
                        # is implemented for a type. Therefore, a lack of a negative impl (!Sized)
                        # means the type is Sized.
                        #
                        # The following block says "there is no impl !Sized for our type."
                        impl @fold @transform(op: "count") @filter(op: "=", value: ["$zero"]) {
                            negative @filter(op: "=", value: ["$true"])

                            implemented_trait {
                                trait {
                                    canonical_path {
                                        path @filter(op: "=", value: ["$sized_path"])
                                    }
                                }
                            }
                        }
                    }
                }
            }
            current {
                item {
                    ... on ImplOwner {
                        visibility_limit @filter(op: "=", value: ["$public"])
                        name @filter(op: "=", value: ["%name"])

                        importable_path {
                            path @filter(op: "=", value: ["%path"])
                        }

                        impl {
                            negative @filter(op: "=", value: ["$true"])

                            implemented_trait {
                                trait {
                                    canonical_path {
                                        path @filter(op: "=", value: ["$sized_path"])
                                    }
                                }
                            }
                        }

                        span_: span @optional {
                            filename @output
                            begin_line @output
                        }
                    }
                }
            }
        }
    }"#,
    arguments: {
        "public": "public",
        "zero": 0,
        "true": true,
        "sized_path": ["core", "marker", "Sized"],
    },
    error_message: "A public type is no longer Sized.",
    per_result_error_template: Some("type {{name}} in {{span_filename}}:{{span_begin_line}}"),
)