Hi! I'm trying to compile code: <div class="snippet-clipboard-content notransl

Next problem which I faced is <div class="snippet-clipboard-content notranslate po

Compiler gives error on r2d2::Pool<r2d2_mysql::MysqlConnectionManager>,about outersky/r2d2-mysql

Comments (4)

shahmuratov commented on July 1, 2024

So I figured it out. I've fixed version of r2d2 to 0.6.4 everything works. Hence I think problem in Error type (v0.7.0: * Add an Error bound to ManageConnection::Error)

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shahmuratov commented on July 1, 2024

Next problem which I faced is

let config = r2d2::Config::builder()
        .pool_size(100)
        .build();
    let manager = r2d2_mysql::MysqlConnectionManager::new("localhost:1234");

    let pool = Arc::new(r2d2::Pool::new(config, manager).unwrap());

doesn't compile.

src/main.rs:110:25: 110:40 error: the trait bound `std::result::Result<r2d2_mysql::MysqlConnectionManager, r2d2_mysql::Error>: r2d2::ManageConnection` is not satisfied [E0277]
src/main.rs:110     let pool = Arc::new(r2d2::Pool::new(config, manager).unwrap());
                                        ^~~~~~~~~~~~~~~
src/main.rs:110:25: 110:40 help: run `rustc --explain E0277` to see a detailed explanation
src/main.rs:110:25: 110:40 note: required by `r2d2::Pool::new`

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shahmuratov commented on July 1, 2024

So the last problem was in my code and I fixed it, but main problem remains: error should implement std::error::Error trait. Current workaround is to fix version of r2d2 to 0.6.4

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outersky commented on July 1, 2024

please try version 7.1.0 again ( already published to crate.io ), upgraded to the latest version of mysql and r2d2.

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