cargo build erorr

[mond77]

root@ubuntu-1:~/github/sealfs# cargo build
   Compiling sealfs v0.1.0 (/root/github/sealfs)
error[E0412]: cannot find type `Database` in this scope
  --> src/server/storage_engine/default_engine.rs:33:18
   |
33 |     pub file_db: Database,
   |                  ^^^^^^^^ not found in this scope

error[E0412]: cannot find type `Database` in this scope
  --> src/server/storage_engine/default_engine.rs:34:17
   |
34 |     pub dir_db: Database,
   |                 ^^^^^^^^ not found in this scope

error[E0412]: cannot find type `Database` in this scope
  --> src/server/storage_engine/default_engine.rs:35:23
   |
35 |     pub file_attr_db: Database,
   |                       ^^^^^^^^ not found in this scope

error[E0425]: cannot find value `file_db` in this scope
   --> src/server/storage_engine/default_engine.rs:127:13
    |
127 |             file_db,
    |             ^^^^^^^ a field by this name exists in `Self`

error[E0425]: cannot find value `dir_db` in this scope
   --> src/server/storage_engine/default_engine.rs:128:13
    |
128 |             dir_db,
    |             ^^^^^^ a field by this name exists in `Self`

error[E0425]: cannot find value `file_attr_db` in this scope
   --> src/server/storage_engine/default_engine.rs:129:13
    |
129 |             file_attr_db,
    |             ^^^^^^^^^^^^ a field by this name exists in `Self`

error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
   --> src/server/storage_engine/default_engine.rs:172:21
    |
172 |         if let Some(value) = self.file_attr_db.db.get(path.as_bytes())? {
    |                     ^^^^^ doesn't have a size known at compile-time
    |
    = help: the trait `Sized` is not implemented for `[u8]`
    = note: all local variables must have a statically known size
    = help: unsized locals are gated as an unstable feature

error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
   --> src/server/storage_engine/default_engine.rs:172:16
    |
172 |         if let Some(value) = self.file_attr_db.db.get(path.as_bytes())? {
    |                ^^^^^^^^^^^ doesn't have a size known at compile-time
    |
    = help: the trait `Sized` is not implemented for `[u8]`
note: required by a bound in `client::_::_serde::__private::Some`
   --> /root/.rustup/toolchains/1.62.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/option.rs:518:17
    |
518 | pub enum Option<T> {
    |                 ^ required by this bound in `client::_::_serde::__private::Some`

error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
   --> src/server/storage_engine/default_engine.rs:172:30
    |
172 |         if let Some(value) = self.file_attr_db.db.get(path.as_bytes())? {
    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
    |
    = help: the trait `Sized` is not implemented for `[u8]`
note: required by a bound in `std::option::Option`
   --> /root/.rustup/toolchains/1.62.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/option.rs:518:17
    |
518 | pub enum Option<T> {
    |                 ^ required by this bound in `std::option::Option`

error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
   --> src/server/storage_engine/default_engine.rs:173:74
    |
173 |             debug!("read_dir getting attr, path: {}, value: {:?}", path, value);
    |                                                                          ^^^^^ doesn't have a size known at compile-time
    |
    = help: the trait `Sized` is not implemented for `[u8]`
note: required by a bound in `ArgumentV1::<'a>::new_debug`
   --> /root/.rustup/toolchains/1.62.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/fmt/mod.rs:340:5
    |
340 |     arg_new!(new_debug, Debug);
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `ArgumentV1::<'a>::new_debug`
    = note: this error originates in the macro `format_args` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
   --> src/server/storage_engine/default_engine.rs:197:21
    |
197 |             Ok(Some(value)) => {
    |                     ^^^^^ doesn't have a size known at compile-time
    |
    = help: the trait `Sized` is not implemented for `[u8]`
    = note: all local variables must have a statically known size
    = help: unsized locals are gated as an unstable feature

error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
   --> src/server/storage_engine/default_engine.rs:197:16
    |
197 |             Ok(Some(value)) => {
    |                ^^^^^^^^^^^ doesn't have a size known at compile-time
    |
    = help: the trait `Sized` is not implemented for `[u8]`
note: required by a bound in `client::_::_serde::__private::Some`
   --> /root/.rustup/toolchains/1.62.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/option.rs:518:17
    |
518 | pub enum Option<T> {
    |                 ^ required by this bound in `client::_::_serde::__private::Some`

error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
   --> src/server/storage_engine/default_engine.rs:258:18
    |
258 |             Some(value) => {
    |                  ^^^^^ doesn't have a size known at compile-time
    |
    = help: the trait `Sized` is not implemented for `[u8]`
    = note: all local variables must have a statically known size
    = help: unsized locals are gated as an unstable feature

error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
   --> src/server/storage_engine/default_engine.rs:258:13
    |
258 |             Some(value) => {
    |             ^^^^^^^^^^^ doesn't have a size known at compile-time
    |
    = help: the trait `Sized` is not implemented for `[u8]`
note: required by a bound in `client::_::_serde::__private::Some`
   --> /root/.rustup/toolchains/1.62.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/option.rs:518:17
    |
518 | pub enum Option<T> {
    |                 ^ required by this bound in `client::_::_serde::__private::Some`

error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
   --> src/server/storage_engine/default_engine.rs:257:35
    |
257 |         let mut file_attr = match self.file_attr_db.db.get(path.as_bytes())? {
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
    |
    = help: the trait `Sized` is not implemented for `[u8]`
note: required by a bound in `std::option::Option`
   --> /root/.rustup/toolchains/1.62.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/option.rs:518:17
    |
518 | pub enum Option<T> {
    |                 ^ required by this bound in `std::option::Option`

error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
   --> src/server/storage_engine/default_engine.rs:273:13
    |
273 |             None => {
    |             ^^^^ doesn't have a size known at compile-time
    |
    = help: the trait `Sized` is not implemented for `[u8]`
note: required by a bound in `client::_::_serde::__private::None`
   --> /root/.rustup/toolchains/1.62.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/option.rs:518:17
    |
518 | pub enum Option<T> {
    |                 ^ required by this bound in `client::_::_serde::__private::None`

Some errors have detailed explanations: E0277, E0412, E0425.
For more information about an error, try `rustc --explain E0277`.
error: could not compile `sealfs` due to 16 previous errors

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