{"record":{"id":"0db1eabdd1f9bfeb","repo":"Kuberwastaken/claurst","slug":"installed-binary-path-has-no-parent","errorCode":null,"errorMessage":"installed binary path has no parent: {}","messagePattern":"installed binary path has no parent: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"src-rust/crates/cli/src/upgrade.rs","lineNumber":314,"sourceCode":"#[cfg(unix)]\nstruct StagedBinary {\n    path: PathBuf,\n}\n\n#[cfg(unix)]\nimpl StagedBinary {\n    fn create_next_to(current: &Path) -> Result<(Self, std::fs::File)> {\n        use std::ffi::OsString;\n        use std::fs::OpenOptions;\n        use std::io::ErrorKind;\n        use std::sync::atomic::{AtomicU64, Ordering};\n\n        static NEXT_STAGE_ID: AtomicU64 = AtomicU64::new(0);\n        const MAX_ATTEMPTS: usize = 128;\n\n        let parent = current\n            .parent()\n            .ok_or_else(|| anyhow!(\"installed binary path has no parent: {}\", current.display()))?;\n        let file_name = current.file_name().ok_or_else(|| {\n            anyhow!(\n                \"installed binary path has no file name: {}\",\n                current.display()\n            )\n        })?;\n\n        for _ in 0..MAX_ATTEMPTS {\n            let id = NEXT_STAGE_ID.fetch_add(1, Ordering::Relaxed);\n            let mut staged_name = OsString::from(\".\");\n            staged_name.push(file_name);\n            staged_name.push(format!(\".upgrade-{}-{}\", std::process::id(), id));\n            let path = parent.join(staged_name);\n\n            match OpenOptions::new().write(true).create_new(true).open(&path) {\n                Ok(file) => return Ok((Self { path }, file)),\n                Err(error) if error.kind() == ErrorKind::AlreadyExists => continue,\n                Err(error) => {","sourceCodeStart":296,"sourceCodeEnd":332,"githubUrl":"https://github.com/Kuberwastaken/claurst/blob/b0637c97ec34144387cbf2f74f65df6d16a6cef1/src-rust/crates/cli/src/upgrade.rs#L296-L332","documentation":"In create_next_to, Path::parent() on the currently installed binary returned None, which happens only for a root-relative bare path like \"/bin\" or a bare file name with no directory component. The upgrade routine needs the parent directory to stage the new binary next to the old one.","triggerScenarios":"current_exe() or the configured binary path resolves to a path with no parent component (e.g. \"/\" child without intermediate dirs, or a bare relative name when current_dir metadata is odd), in create_next_to during upgrade.","commonSituations":"Binary copied/moved to an exotic location like filesystem root; running a binary whose path was canonicalized to \"/\"; custom PATH entry pointing at a bare name; sandboxed environments reporting odd exe paths.","solutions":["Install the binary in a normal directory (e.g. ~/.local/bin, /usr/local/bin) so it has a resolvable parent.","Check where the running binary lives (which claurst; readlink /proc/self/exe) and reinstall there properly.","Pass an explicit target/install path if the tool supports it.","Avoid running the binary directly from \"/\" or via a bare-name mount."],"exampleFix":"// before\n$ sudo cp claurst /           # path with no usable parent for staging\n// after\n$ sudo cp claurst /usr/local/bin/claurst","handlingStrategy":"validation","validationCode":"// validate the install path before upgrading\nlet path = std::env::current_exe()?;\nif path.parent().is_none() {\n    bail!(\"binary must be installed in a real directory, not {}\", path.display());\n}","typeGuard":null,"tryCatchPattern":null,"preventionTips":["Install binaries into standard bin directories (~/.local/bin, /usr/local/bin)","Never run an upgradable binary from the filesystem root","Canonicalize the exe path early so odd layouts surface as clear errors"],"tags":["filesystem","path","upgrade","self-update"],"backgroundTag":"path-is-not-a-directory","analyzedSha":"b0637c97ec34144387cbf2f74f65df6d16a6cef1","analyzedAt":"2026-09-10T00:24:58.650Z","contentChangedAt":"2026-09-10T00:24:58.650Z","schemaVersion":2},"datasetVersion":"2026-09-16T04:17:20.429Z"}