Backend compiling error while "cargo run"

[lovelord83]

Hello there,
I'm in trouble compiling project on a fresh new ubuntu 20.04 (behind details)

Distributor ID: Ubuntu
Description:    Ubuntu 20.04.3 LTS
Release:        20.04
Codename:       focal


Linux docker 5.13.0-30-generic #33~20.04.1-Ubuntu SMP Mon Feb 7 14:25:10 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

running "cargo run" from /LegacyPlayersV3/Backend

I receive those errors:

Compiling backend v0.2.0 (/LegacyPlayersV3/Backend)
error[E0599]: no function or associated item named `with_options` found for struct `std::fs::File` in the current scope
   --> Backend/src/modules/live_data_processor/tools/server/server_post_processing.rs:323:47
    |
323 |         let mut open_options = std::fs::File::with_options();
    |                                               ^^^^^^^^^^^^ function or associated item not found in `std::fs::File`

error[E0308]: mismatched types
  --> Backend/src/modules/live_data_processor/transfer/package.rs:19:60
   |
19 |     let mut multipart_form_data = MultipartFormData::parse(content_type, data, options).unwrap();
   |                                                            ^^^^^^^^^^^^ expected struct `rocket_http::header::content_type::Conte                  ntType`, found struct `rocket::http::ContentType`
   |
   = note: expected reference `&rocket_http::header::content_type::ContentType`
              found reference `&rocket::http::ContentType`

error[E0308]: mismatched types
  --> Backend/src/modules/live_data_processor/transfer/package.rs:19:74
   |
19 |     let mut multipart_form_data = MultipartFormData::parse(content_type, data, options).unwrap();
   |                                                                          ^^^^ expected struct `rocket::data::data::Data`, found s                  truct `rocket::Data`
   |
   = note: perhaps two different versions of crate `rocket` are being used?

error[E0599]: no method named `unwrap` found for opaque type `impl std::future::Future<Output = Result<MultipartFormData, MultipartFor                  mDataError>>` in the current scope
  --> Backend/src/modules/live_data_processor/transfer/package.rs:19:89
   |
19 |     let mut multipart_form_data = MultipartFormData::parse(content_type, data, options).unwrap();
   |                                                                                         ^^^^^^ method not found in `impl std::fut                  ure::Future<Output = Result<MultipartFormData, MultipartFormDataError>>`
   |
help: consider `await`ing on the `Future` and calling the method on its `Output`
   |
19 |     let mut multipart_form_data = MultipartFormData::parse(content_type, data, options).await.unwrap();
   |                                                                                         ++++++

error[E0308]: mismatched types
  --> Backend/src/modules/live_data_processor/transfer/upload.rs:32:60
   |
32 |     let mut multipart_form_data = MultipartFormData::parse(content_type, form_data, options).unwrap();
   |                                                            ^^^^^^^^^^^^ expected struct `rocket_http::header::content_type::Conte                  ntType`, found struct `rocket::http::ContentType`
   |
   = note: expected reference `&rocket_http::header::content_type::ContentType`
              found reference `&rocket::http::ContentType`

error[E0308]: mismatched types
  --> Backend/src/modules/live_data_processor/transfer/upload.rs:32:74
   |
32 |     let mut multipart_form_data = MultipartFormData::parse(content_type, form_data, options).unwrap();
   |                                                                          ^^^^^^^^^ expected struct `rocket::data::data::Data`, fo                  und struct `rocket::Data`
   |
   = note: perhaps two different versions of crate `rocket` are being used?

error[E0599]: no method named `unwrap` found for opaque type `impl std::future::Future<Output = Result<MultipartFormData, MultipartFor                  mDataError>>` in the current scope
  --> Backend/src/modules/live_data_processor/transfer/upload.rs:32:94
   |
32 |     let mut multipart_form_data = MultipartFormData::parse(content_type, form_data, options).unwrap();
   |                                                                                              ^^^^^^ method not found in `impl std                  ::future::Future<Output = Result<MultipartFormData, MultipartFormDataError>>`
   |
help: consider `await`ing on the `Future` and calling the method on its `Output`
   |
32 |     let mut multipart_form_data = MultipartFormData::parse(content_type, form_data, options).await.unwrap();
   |                                                                                              ++++++

Some errors have detailed explanations: E0308, E0599.
For more information about an error, try `rustc --explain E0308`.
error: could not compile `backend` due to 7 previous errors
root@docker:/LegacyPlayersV3/Backend# cargo run
   Compiling backend v0.2.0 (/LegacyPlayersV3/Backend)
error[E0599]: no function or associated item named `with_options` found for struct `std::fs::File` in the current scope
   --> Backend/src/modules/live_data_processor/tools/server/server_post_processing.rs:323:47
    |
323 |         let mut open_options = std::fs::File::with_options();
    |                                               ^^^^^^^^^^^^ function or associated item not found in `std::fs::File`

error[E0308]: mismatched types
  --> Backend/src/modules/live_data_processor/transfer/package.rs:19:60
   |
19 |     let mut multipart_form_data = MultipartFormData::parse(content_type, data, options).unwrap();
   |                                                            ^^^^^^^^^^^^ expected struct `rocket_http::header::content_type::Conte                  ntType`, found struct `rocket::http::ContentType`
   |
   = note: expected reference `&rocket_http::header::content_type::ContentType`
              found reference `&rocket::http::ContentType`

error[E0308]: mismatched types
  --> Backend/src/modules/live_data_processor/transfer/package.rs:19:74
   |
19 |     let mut multipart_form_data = MultipartFormData::parse(content_type, data, options).unwrap();
   |                                                                          ^^^^ expected struct `rocket::data::data::Data`, found s                  truct `rocket::Data`
   |
   = note: perhaps two different versions of crate `rocket` are being used?

error[E0599]: no method named `unwrap` found for opaque type `impl std::future::Future<Output = Result<MultipartFormData, MultipartFor                  mDataError>>` in the current scope
  --> Backend/src/modules/live_data_processor/transfer/package.rs:19:89
   |
19 |     let mut multipart_form_data = MultipartFormData::parse(content_type, data, options).unwrap();
   |                                                                                         ^^^^^^ method not found in `impl std::fut                  ure::Future<Output = Result<MultipartFormData, MultipartFormDataError>>`
   |
help: consider `await`ing on the `Future` and calling the method on its `Output`
   |
19 |     let mut multipart_form_data = MultipartFormData::parse(content_type, data, options).await.unwrap();
   |                                                                                         ++++++

error[E0308]: mismatched types
  --> Backend/src/modules/live_data_processor/transfer/upload.rs:32:60
   |
32 |     let mut multipart_form_data = MultipartFormData::parse(content_type, form_data, options).unwrap();
   |                                                            ^^^^^^^^^^^^ expected struct `rocket_http::header::content_type::Conte                  ntType`, found struct `rocket::http::ContentType`
   |
   = note: expected reference `&rocket_http::header::content_type::ContentType`
              found reference `&rocket::http::ContentType`

error[E0308]: mismatched types
  --> Backend/src/modules/live_data_processor/transfer/upload.rs:32:74
   |
32 |     let mut multipart_form_data = MultipartFormData::parse(content_type, form_data, options).unwrap();
   |                                                                          ^^^^^^^^^ expected struct `rocket::data::data::Data`, fo                  und struct `rocket::Data`
   |
   = note: perhaps two different versions of crate `rocket` are being used?

error[E0599]: no method named `unwrap` found for opaque type `impl std::future::Future<Output = Result<MultipartFormData, MultipartFor                  mDataError>>` in the current scope
  --> Backend/src/modules/live_data_processor/transfer/upload.rs:32:94
   |
32 |     let mut multipart_form_data = MultipartFormData::parse(content_type, form_data, options).unwrap();
   |                                                                                              ^^^^^^ method not found in `impl std                  ::future::Future<Output = Result<MultipartFormData, MultipartFormDataError>>`
   |
help: consider `await`ing on the `Future` and calling the method on its `Output`
   |
32 |     let mut multipart_form_data = MultipartFormData::parse(content_type, form_data, options).await.unwrap();
   |                                                                                              ++++++

Some errors have detailed explanations: E0308, E0599.
For more information about an error, try `rustc --explain E0308`.
error: could not compile `backend` due to 7 previous errors

[Geigerkind]

You may have to use an older version now of Rust. As the instructions were written 2 years ago now.