cargo-semver-checks 0.48.0

Scan your Rust crate for semver violations.
Documentation 
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SemverQuery(
    id: "trait_associated_const_added",
    human_readable_name: "non-sealed trait added associated constant without default value",
    description: "A non-sealed trait has gained an associated constant without a default value, which breaks downstream implementations of the trait",
    required_update: Major,
    lint_level: Deny,
    reference_link: Some("https://doc.rust-lang.org/cargo/reference/semver.html#trait-new-item-no-default"),
    query: r#"
    {
        CrateDiff {
            current {
                item {
                    ... on Trait {
                        visibility_limit @filter(op: "=", value: ["$public"])

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

                        associated_constant {
                            associated_constant: name @output @tag
                            default @filter(op: "is_null") @output

                            span_: span @optional {
                                filename @output
                                begin_line @output
                                end_line @output
                            }
                        }
                    }
                }
            }
            baseline {
                item {
                    ... on Trait {
                        visibility_limit @filter(op: "=", value: ["$public"]) @output
                        public_api_sealed @filter(op: "!=", value: ["$true"])

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

                        associated_constant @fold @transform(op: "count") @filter(op: "=", value: ["$zero"]) {
                            name @filter(op: "=", value: ["%associated_constant"])
                        }
                    }
                }
            }
        }
    }"#,
    arguments: {
        "public": "public",
        "true": true,
        "zero": 0,
    },
    error_message: "A non-sealed trait has gained an associated constant without a default value, which breaks downstream implementations of the trait",
    per_result_error_template: Some("trait constant {{join \"::\" path}}::{{associated_constant}} in file {{span_filename}}:{{span_begin_line}}"),
)