[BUG][Rust] Invalid Rust generated code

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

error[E0412]: cannot find type `GetWebsocketsTokenRequest` in module `crate::models`
   --> src\apis\user_data_api.rs:234:125
    |
234 | ...: crate::models::GetWebsocketsTokenRequest) -> Result<crate::models::Balance2, Error<GetAccountBalanceError>> {
    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^ help: a struct with a similar name exists: `GetWebsocketsToken200Response`
    |
   ::: src\models\get_websockets_token_200_response.rs:15:1
    |
15  | pub struct GetWebsocketsToken200Response {
    | ---------------------------------------- similarly named struct `GetWebsocketsToken200Response` defined here

error[E0412]: cannot find type `GetClosedOrdersRequestBody` in module `crate::models`
   --> src\apis\user_data_api.rs:279:125
    |
279 | ...ed_orders_request_body: crate::models::GetClosedOrdersRequestBody) -> Result<crate::models::Closed2, Error<GetClosedOrdersError>> {
    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `crate::models`

error[E0412]: cannot find type `GetLedgersInfoRequestBody` in module `crate::models`
   --> src\apis\user_data_api.rs:324:118
    |
324 | ...dgers_info_request_body: crate::models::GetLedgersInfoRequestBody) -> Result<crate::models::Info3, Error<GetLedgersError>> {
    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `crate::models`

error[E0412]: cannot find type `GetLedgerInfoRequestBody` in module `crate::models`
   --> src\apis\user_data_api.rs:369:122
    |
369 | ...edger_info_request_body: crate::models::GetLedgerInfoRequestBody) -> Result<crate::models::Query3, Error<GetLedgersInfoError>> {
    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^ not found in `crate::models`

error[E0412]: cannot find type `GetOpenOrdersRequestBody` in module `crate::models`
   --> src\apis\user_data_api.rs:414:121
    |
414 | ...pen_orders_request_body: crate::models::GetOpenOrdersRequestBody) -> Result<crate::models::Open2, Error<GetOpenOrdersError>> {
    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^ not found in `crate::models`

error[E0412]: cannot find type `UpdateAccountProfileRequest` in module `crate::models`
   --> src\apis\user_data_api.rs:569:125
    |
569 | ...ccount_profile_request: crate::models::UpdateAccountProfileRequest) -> Result<crate::models::Balance4, Error<GetTradeBalanceError>> {
    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `crate::models`

error[E0412]: cannot find type `GetTradesHistoryRequestBody` in module `crate::models`
   --> src\apis\user_data_api.rs:614:126
    |
614 | ...s_history_request_body: crate::models::GetTradesHistoryRequestBody) -> Result<crate::models::History2, Error<GetTradeHistoryError>> {
    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `crate::models`

error[E0412]: cannot find type `GetTradeVolume` in module `crate::models`
   --> src\apis\user_data_api.rs:659:122
    |
659 | ...t_trade_volume: crate::models::GetTradeVolume) -> Result<crate::models::Volume, Error<GetTradeVolumeError>> {
    |                                   ^^^^^^^^^^^^^^ help: a struct with a similar name exists: `TradeVolume`
    |
   ::: src\models\trade_volume.rs:16:1
    |
16  | pub struct TradeVolume {
    | ---------------------- similarly named struct `TradeVolume` defined here

error[E0412]: cannot find type `GetTradesInfoRequestBody` in module `crate::models`
   --> src\apis\user_data_api.rs:705:121
    |
705 | ...rades_info_request_body: crate::models::GetTradesInfoRequestBody) -> Result<crate::models::GetTradesInfo200Response, Error<GetTradesIn...
    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^ not found in `crate::models`

error[E0412]: cannot find type `BatchaddOrdersInner` in module `crate::models`
   --> src\apis\user_trading_api.rs:168:115
    |
168 | ...on, nonce: i32, orders: Vec<crate::models::BatchaddOrdersInner>, pair: &str, deadline: Option<&str>, validate: Option<bool>) -> Result...
    |                                               ^^^^^^^^^^^^^^^^^^^ not found in `crate::models`

error[E0412]: cannot find type `GetWebsocketsTokenRequest` in module `crate::models`
   --> src\apis\user_trading_api.rs:223:123
    |
223 | ...: crate::models::GetWebsocketsTokenRequest) -> Result<crate::models::CancelAllOrders200Response, Error<CancelAllOrdersError>> {
    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^ help: a struct with a similar name exists: `GetWebsocketsToken200Response`
    |
   ::: src\models\get_websockets_token_200_response.rs:15:1
    |
15  | pub struct GetWebsocketsToken200Response {
    | ---------------------------------------- similarly named struct `GetWebsocketsToken200Response` defined here

error[E0412]: cannot find type `CancelTxid` in module `crate::models`
   --> src\apis\user_trading_api.rs:316:106
    |
316 | ...onfiguration, nonce: i32, txid: crate::models::CancelTxid) -> Result<crate::models::Cancel2, Error<CancelOrderError>> {
    |                                                   ^^^^^^^^^^ not found in `crate::models`

error[E0412]: cannot find type `BatchcancelOrdersInner` in module `crate::models`
   --> src\apis\user_trading_api.rs:364:118
    |
364 | ..., nonce: i32, orders: Vec<crate::models::BatchcancelOrdersInner>) -> Result<crate::models::Batchcancel2, Error<CancelOrderBatchError>> {
    |                                             ^^^^^^^^^^^^^^^^^^^^^^ not found in `crate::models`

error[E0412]: cannot find type `EditTxid` in module `crate::models`
   --> src\apis\user_trading_api.rs:412:104
    |
412 | ...Configuration, nonce: i32, txid: crate::models::EditTxid, pair: &str, userref: Option<i32>, volume: Option<&str>, displayvol: Option<&...
    |                                                    ^^^^^^^^ not found in `crate::models`

error[E0412]: cannot find type `GetWebsocketsTokenRequest` in module `crate::models`
  --> src\apis\websockets_authentication_api.rs:27:126
   |
27 | ...: crate::models::GetWebsocketsTokenRequest) -> Result<crate::models::GetWebsocketsToken200Response, Error<GetWebsocketsTokenError>> {
   |                     ^^^^^^^^^^^^^^^^^^^^^^^^^ help: a struct with a similar name exists: `GetWebsocketsToken200Response`
   |
  ::: src\models\get_websockets_token_200_response.rs:15:1
   |
15 | pub struct GetWebsocketsToken200Response {
   | ---------------------------------------- similarly named struct `GetWebsocketsToken200Response` defined here

error[E0412]: cannot find type `Array` in module `crate::models`
  --> src\models\add_2.rs:19:42
   |
19 |     pub error: Option<Vec<crate::models::Array>>,
   |                                          ^^^^^ not found in `crate::models`
   |
help: there is an enum variant `serde_json::Value::Array`; try using the variant's enum
   |
19 |     pub error: Option<Vec<serde_json::Value>>,
   |                           ~~~~~~~~~~~~~~~~~

error[E0412]: cannot find type `Array` in module `crate::models`
  --> src\models\batchadd_2.rs:19:42
   |
19 |     pub error: Option<Vec<crate::models::Array>>,
   |                                          ^^^^^ not found in `crate::models`
   |
help: there is an enum variant `serde_json::Value::Array`; try using the variant's enum
   |
19 |     pub error: Option<Vec<serde_json::Value>>,
   |                           ~~~~~~~~~~~~~~~~~

error[E0412]: cannot find type `Array` in module `crate::models`
  --> src\models\batchcancel_2.rs:19:42
   |
19 |     pub error: Option<Vec<crate::models::Array>>,
   |                                          ^^^^^ not found in `crate::models`
   |
help: there is an enum variant `serde_json::Value::Array`; try using the variant's enum
   |
19 |     pub error: Option<Vec<serde_json::Value>>,
   |                           ~~~~~~~~~~~~~~~~~

error[E0412]: cannot find type `Array` in module `crate::models`
  --> src\models\cancel_2.rs:19:42
   |
19 |     pub error: Option<Vec<crate::models::Array>>,
   |                                          ^^^^^ not found in `crate::models`
   |
help: there is an enum variant `serde_json::Value::Array`; try using the variant's enum
   |
19 |     pub error: Option<Vec<serde_json::Value>>,
   |                           ~~~~~~~~~~~~~~~~~

error[E0412]: cannot find type `Array` in module `crate::models`
  --> src\models\edit_2.rs:19:42
   |
19 |     pub error: Option<Vec<crate::models::Array>>,
   |                                          ^^^^^ not found in `crate::models`
   |
help: there is an enum variant `serde_json::Value::Array`; try using the variant's enum
   |
19 |     pub error: Option<Vec<serde_json::Value>>,
   |                           ~~~~~~~~~~~~~~~~~

error[E0412]: cannot find type `Array` in module `crate::models`
  --> src\models\get_trades_info_200_response.rs:20:42
   |
20 |     pub error: Option<Vec<crate::models::Array>>,
   |                                          ^^^^^ not found in `crate::models`
   |
help: there is an enum variant `serde_json::Value::Array`; try using the variant's enum
   |
20 |     pub error: Option<Vec<serde_json::Value>>,
   |                           ~~~~~~~~~~~~~~~~~

error[E0283]: type annotations needed
  --> src\models\add_2.rs:19:5
   |
14 | #[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
   |                                   ------- in this derive macro expansion
...
19 |     pub error: Option<Vec<crate::models::Array>>,
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type
   |
   = note: cannot satisfy `_: Default`
   = note: this error originates in the derive macro `Default` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0282]: type annotations needed
  --> src\models\add_2.rs:26:20
   |
26 |             error: None,
   |                    ^^^^ cannot infer type of the type parameter `T` declared on the enum `Option`
   |
help: consider specifying the generic argument
   |
26 |             error: None::<T>,
   |                        +++++

error[E0283]: type annotations needed
  --> src\models\batchadd_2.rs:19:5
   |
14 | #[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
   |                                   ------- in this derive macro expansion
...
19 |     pub error: Option<Vec<crate::models::Array>>,
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type
   |
   = note: cannot satisfy `_: Default`
   = note: this error originates in the derive macro `Default` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0282]: type annotations needed
  --> src\models\batchadd_2.rs:26:20
   |
26 |             error: None,
   |                    ^^^^ cannot infer type of the type parameter `T` declared on the enum `Option`
   |
help: consider specifying the generic argument
   |
26 |             error: None::<T>,
   |                        +++++

error[E0283]: type annotations needed
  --> src\models\batchcancel_2.rs:19:5
   |
14 | #[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
   |                                   ------- in this derive macro expansion
...
19 |     pub error: Option<Vec<crate::models::Array>>,
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type
   |
   = note: cannot satisfy `_: Default`
   = note: this error originates in the derive macro `Default` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0282]: type annotations needed
  --> src\models\batchcancel_2.rs:26:20
   |
26 |             error: None,
   |                    ^^^^ cannot infer type of the type parameter `T` declared on the enum `Option`
   |
help: consider specifying the generic argument
   |
26 |             error: None::<T>,
   |                        +++++

error[E0283]: type annotations needed
  --> src\models\cancel_2.rs:19:5
   |
14 | #[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
   |                                   ------- in this derive macro expansion
...
19 |     pub error: Option<Vec<crate::models::Array>>,
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type
   |
   = note: cannot satisfy `_: Default`
   = note: this error originates in the derive macro `Default` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0282]: type annotations needed
  --> src\models\cancel_2.rs:26:20
   |
26 |             error: None,
   |                    ^^^^ cannot infer type of the type parameter `T` declared on the enum `Option`
   |
help: consider specifying the generic argument
   |
26 |             error: None::<T>,
   |                        +++++

error[E0283]: type annotations needed
  --> src\models\edit_2.rs:19:5
   |
14 | #[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
   |                                   ------- in this derive macro expansion
...
19 |     pub error: Option<Vec<crate::models::Array>>,
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type
   |
   = note: cannot satisfy `_: Default`
   = note: this error originates in the derive macro `Default` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0282]: type annotations needed
  --> src\models\edit_2.rs:26:20
   |
26 |             error: None,
   |                    ^^^^ cannot infer type of the type parameter `T` declared on the enum `Option`
   |
help: consider specifying the generic argument
   |
26 |             error: None::<T>,
   |                        +++++

error[E0283]: type annotations needed
  --> src\models\get_trades_info_200_response.rs:20:5
   |
14 | #[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
   |                                   ------- in this derive macro expansion
...
20 |     pub error: Option<Vec<crate::models::Array>>,
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type
   |
   = note: cannot satisfy `_: Default`
   = note: this error originates in the derive macro `Default` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0282]: type annotations needed
  --> src\models\get_trades_info_200_response.rs:27:20
   |
27 |             error: None,
   |                    ^^^^ cannot infer type of the type parameter `T` declared on the enum `Option`
   |
help: consider specifying the generic argument
   |
27 |             error: None::<T>,
   |                        +++++

openapi-generator version

openapitools/openapi-generator-cli:latest
openapitools/openapi-generator-cli:v6.2.1
openapitools/openapi-generator-cli:v5.4.0

OpenAPI declaration file content or url

https://docs.kraken.com/rest/

blob:https://docs.kraken.com/6e6b7eda-80e7-4190-9795-d3fe76784b87

Generation Details

Steps to reproduce

docker run --rm -v "${PWD}:/local" openapitools/openapi-generator-cli:latest generate -i /local/openapi.json -g rust -o /local/out/rust
cd out/rust
cargo build

Related issues/PRs

https://github.com/OpenAPITools/openapi-generator/issues/12464

Suggest a fix

Start with the generated references in src/apis/user_data_api.rs, src/apis/user_trading_api.rs, and src/apis/websockets_authentication_api.rs, then compare them with the models listed under src/models/. Trace why the referenced request and Array types are absent, and verify that the generated Rust crate compiles without the reported missing-type errors.