use crate::{pack, pack::index};use git_object::owned;use quick_error::quick_error; quick_error! {    #[derive(Debug)]    pub enum Error {        Processor(err: Box<dyn std::error::Error + Send + Sync>) {            display("One of the traversal processors failed")            source(&**err)            from()        }        Verify(err: index::verify::Error) {            display("Index file, pack file or object verification failed")            source(err)            from()        }        Tree(err: pack::tree::from_offsets::Error) {            display("The pack delta tree index could not be built")            from()            source(err)        }        TreeTraversal(err: pack::tree::traverse::Error) {            display("The tree traversal failed")            from()            source(err)        }        PackChecksum(err: pack::data::verify::Error) {            display("The pack of this index file failed to verify its checksums")            from()            source(err)        }        PackDecode(err: pack::data::decode::Error, id: owned::Id, offset: u64) {            display("Object {} at offset {} could not be decoded", id, offset)            source(err)        }        PackMismatch { expected: owned::Id, actual: owned::Id } {            display("The packfiles checksum didn't match the index file checksum: expected {}, got {}", expected, actual)        }        PackObjectMismatch { expected: owned::Id, actual: owned::Id, offset: u64, kind: git_object::Kind} {            display("The SHA1 of {} object at offset {} didn't match the checksum in the index file: expected {}, got {}", kind, offset, expected, actual)        }        Crc32Mismatch { expected: u32, actual: u32, offset: u64, kind: git_object::Kind} {            display("The CRC32 of {} object at offset {} didn't match the checksum in the index file: expected {}, got {}", kind, offset, expected, actual)        }        Interrupted {            display("Interrupted")        }    }}