mac编译dbgen出错rand::rngs::OsRng
error[E0432]: unresolved import `rand::rngs::OsRng`
–> /Users/lanyuan/.cargo/registry/src/index.crates.io-6f17d22bba15001f/dbgen-0.8.0/src/cli.rs:19:27
|
19 | rngs::{mock::StepRng, OsRng},
| ^^^^^ no `OsRng` in `rngs`
|
note: found an item that was configured out
–> /Users/lanyuan/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rand-0.8.5/src/rngs/mod.rs:119:50
|
119 | #[cfg(feature = “getrandom”)] pub use rand_core::OsRng;
| ^^^^^
= note: the item is gated behind the `getrandom` feature
error[E0432]: unresolved import `rand::rngs::OsRng`
–> /Users/lanyuan/.cargo/registry/src/index.crates.io-6f17d22bba15001f/dbgen-0.8.0/src/schemagen_cli.rs:5:12
|
5 | use rand::{rngs::OsRng, seq::SliceRandom, Rng, RngCore, SeedableRng};
| ^^^^^^^^^^^ no `OsRng` in `rngs`
|
note: found an item that was configured out
–> /Users/lanyuan/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rand-0.8.5/src/rngs/mod.rs:119:50
|
119 | #[cfg(feature = “getrandom”)] pub use rand_core::OsRng;
| ^^^^^
= note: the item is gated behind the `getrandom` feature
分析：
网上和kimi提示添加依赖到Cargo.toml：
[dependencies]
rand = { version = “0.8”, features = [“getrandom”] }
根据编译路径，找到/Users/lanyuan/.cargo/registry/src/index.crates.io-6f17d22bba15001f/dbgen-0.8.0，打开Cargo.toml,长这样：
[dependencies.rand]
version = “0.8.5”
default-features = false
修改false为true解决。
语法差别是rust 1.49 2018版本同rust 1.79的区别。
For more information about this error, try `rustc –explain E0432`.
error: could not compile `dbgen` (lib) due to 2 previous errors
error: failed to compile `dbgen v0.8.0`, intermediate artifacts can be found at `/var/folders/qn/sls3xhws4218snv410vq6x380000gn/T/cargo-installNSCX7t`.
