{"record":{"id":"f45bd6564d2b8070","repo":"GitoxideLabs/gitoxide","slug":"tried-to-use-as-tag-but-was","errorCode":null,"errorMessage":"Tried to use {} as tag, but was {}","messagePattern":"Tried to use (.+?) as tag, but was (.+?)","errorType":"panic","errorClass":null,"httpStatus":null,"severity":"error","filePath":"gix/src/object/mod.rs","lineNumber":104,"sourceCode":"        match self.try_into() {\n            Ok(tree) => tree,\n            Err(this) => panic!(\"Tried to use {} as tree, but was {}\", this.id, this.kind),\n        }\n    }\n\n    /// Transform this object into a commit, or panic if it is none.\n    pub fn into_commit(self) -> Commit<'repo> {\n        match self.try_into() {\n            Ok(commit) => commit,\n            Err(this) => panic!(\"Tried to use {} as commit, but was {}\", this.id, this.kind),\n        }\n    }\n\n    /// Transform this object into a tag, or panic if it is none.\n    pub fn into_tag(self) -> Tag<'repo> {\n        match self.try_into() {\n            Ok(tag) => tag,\n            Err(this) => panic!(\"Tried to use {} as tag, but was {}\", this.id, this.kind),\n        }\n    }\n\n    /// Transform this object into a commit, or return it as part of the `Err` if it is no commit.\n    pub fn try_into_commit(self) -> Result<Commit<'repo>, try_into::Error> {\n        self.try_into().map_err(|this: Self| try_into::Error {\n            id: this.id,\n            actual: this.kind,\n            expected: gix_object::Kind::Commit,\n        })\n    }\n\n    /// Transform this object into a tag, or return it as part of the `Err` if it is no commit.\n    pub fn try_into_tag(self) -> Result<Tag<'repo>, try_into::Error> {\n        self.try_into().map_err(|this: Self| try_into::Error {\n            id: this.id,\n            actual: this.kind,\n            expected: gix_object::Kind::Commit,","sourceCodeStart":86,"sourceCodeEnd":122,"githubUrl":"https://github.com/GitoxideLabs/gitoxide/blob/e73179060badf27222d790981fac3f84c1830a7e/gix/src/object/mod.rs#L86-L122","documentation":"This panic comes from `Object::into_tag()` in gix, the panic-based conversion of a generic `Object` handle into a `Tag`. The library throws it because the object is not an annotated tag (its kind was Blob, Tree, or Commit). The fallible counterpart is `try_into_tag()`, so the panic signals a caller assumption that the id denotes a tag object.","triggerScenarios":"Calling `object.into_tag()` on an id that resolves to a blob, tree, or lightweight-commit reference. Happens when dereferencing refs without checking whether they point to annotated tag objects.","commonSituations":"Loading the object a `refs/tags/*` ref points at when the tag is lightweight (pointing straight at a commit); iterating repository objects and converting each to a tag; confusing tag names with tag objects.","solutions":["Check `object.kind == gix::object::Kind::Tag` before calling `into_tag()`.","Use `try_into_tag()` and handle the `Err` case to get the original object back instead of a panic.","For lightweight tags, treat the target object by its own kind rather than assuming a tag object exists.","Verify with `git cat-file -t <id>` that the id is of type `tag`."],"exampleFix":"// before\nlet tag = repo.find_object(id)?.into_tag();\n\n// after\nlet object = repo.find_object(id)?;\nif object.kind == gix::object::Kind::Tag {\n    let tag = object.try_into_tag().expect(\"kind checked as tag\");\n} else {\n    // lightweight tag: object is the target itself\n}","handlingStrategy":"type-guard","validationCode":"let object = repo.find_object(tag_id)?;\nif object.kind != gix::object::Kind::Tag {\n    return Err(anyhow::anyhow!(\"id {} is {:?}, not an annotated tag\", tag_id, object.kind));\n}","typeGuard":"fn as_tag(object: gix::Object<'_>) -> Option<gix::Tag<'_>> {\n    (object.kind == gix::object::Kind::Tag).then(|| object.try_into_tag().expect(\"kind checked\"))\n}","tryCatchPattern":"let tag = match object.try_into_tag() {\n    Ok(tag) => tag,\n    Err(obj) => return Err(anyhow::anyhow!(\"object {} was {:?}, not a tag\", obj.id, obj.kind)),\n};","preventionTips":["Check `object.kind == Kind::Tag` before `into_tag()`.","Remember lightweight tags point directly at commits — they have no tag object.","Use `try_into_tag()` and handle the returned object in the error path."],"tags":["panic","git","object-model","type-mismatch"],"backgroundTag":"type-mismatch","analyzedSha":"e73179060badf27222d790981fac3f84c1830a7e","analyzedAt":"2026-09-08T11:26:50.865Z","contentChangedAt":"2026-09-08T11:26:50.865Z","schemaVersion":2},"datasetVersion":"2026-09-15T23:17:13.987Z"}