cargo-semver-checks 0.43.0

Scan your Rust crate for semver violations.
Documentation 
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SemverQuery(
    id: "trait_requires_more_const_generic_params",
    human_readable_name: "trait now requires more const generic parameters",
    description: "A trait now requires more const generic parameters than before.",
    required_update: Major,
    lint_level: Deny,
    reference_link: Some("https://doc.rust-lang.org/reference/items/generics.html#const-generics"),
    query: r#"
    {
        CrateDiff {
            baseline {
                item {
                    ... on ImplOwner {
                        visibility_limit @filter(op: "=", value: ["$public"])
                        name @output

                        importable_path {
                            path @tag @output
                            public_api @filter(op: "=", value: ["$true"])
                        }

                        generic_parameter @fold
                                        @transform(op: "count")
                                        @tag(name: "old_required_const_count")
                                        @output(name: "old_required_const_count") {
                            ... on GenericConstParameter {
                                old_required_consts: name @output
                                has_default @filter(op: "!=", value: ["$true"])
                            }
                        }
                    }
                }
            }
            current {
                item {
                    ... on ImplOwner {
                        visibility_limit @filter(op: "=", value: ["$public"]) @output

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

                        generic_parameter @fold
                                          @transform(op: "count")
                                          @filter(op: ">", value: ["%old_required_const_count"])
                                          @output(name: "new_required_const_count") {
                            ... on GenericConstParameter {
                                new_required_consts: name @output
                                has_default @filter(op: "!=", value: ["$true"])
                            }
                        }

                        span_: span @optional {
                            filename @output
                            begin_line @output
                            end_line @output
                        }
                    }
                }
            }
        }
    }"#,
    arguments: {
        "public": "public",
        "true": true,
    },
    error_message: "A trait now requires more const generic parameters than it used to. Uses of this trait that supplied the previously-required number of const generics will be broken. To fix this, consider supplying default values for newly-added const generics.",
    per_result_error_template: Some("trait {{name}} ({{old_required_const_count}} -> {{new_required_const_count}} required const generics) in {{span_filename}}:{{span_begin_line}}"),
    // TODO: see https://github.com/obi1kenobi/cargo-semver-checks/blob/main/CONTRIBUTING.md#adding-a-witness
    // for information about this field.
    //
    // The witness would be a type ascription with the old number
    // of required const generics, which is insufficient for the new definition.
    witness: None,
)