let tag = libpijul::tag::txn::TagTxn::new(&tag_path).unwrap();

                let tag = libpijul::tag::txn::TagTxn::new(&tag_path)?;

    #[error("Tag file is corrupt")]
    BincodeDe(bincode::Error),

        let header = bincode::deserialize(&off)?;

        let header = bincode::deserialize(&off).map_err(TagError::BincodeDe)?;

        Ok(bincode::deserialize_from(&mut self.file)?)

        Ok(bincode::deserialize_from(&mut self.file).map_err(TagError::BincodeDe)?)