这是我尝试在项目中运行cargo test时得到的错误。这是什么意思?我怎么修理它?
我可以尝试更新更多的细节，但我不能用一个最小的例子来复制它，不幸的是…
完全错误:
cargo test
Compiling ranges v0.1.0 (file:///Users/user/code/rust-project)
error: cannot satisfy dependencies so `std` only shows up once
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= help: having upstream crates all available in one format will likely make this go away
error: cannot satisfy dependencies so `core` only shows up once
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= help: having upstream crates all available in one format will likely make this go away
error: cannot satisfy dependencies so `collections` only shows up once
|
= help: having upstream crates all available in one format will likely make this go away
error: cannot satisfy dependencies so `rustc_unicode` only shows up once
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= help: having upstream crates all available in one format will likely make this go away
error: cannot satisfy dependencies so `alloc` only shows up once
|
= help: having upstream crates all available in one format will likely make this go away
error: cannot satisfy dependencies so `rand` only shows up once
|
= help: having upstream crates all available in one format will likely make this go away
error: cannot satisfy dependencies so `libc` only shows up once
|
= help: having upstream crates all available in one format will likely make this go away
error: cannot satisfy dependencies so `unwind` only shows up once
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= help: having upstream crates all available in one format will likely make this go away
error: cannot satisfy dependencies so `panic_unwind` only shows up once
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= help: having upstream crates all available in one format will likely make this go away
error: cannot link together two allocators: alloc_jemalloc and alloc_system
error: aborting due to 10 previous errors
在编译步骤中，当我尝试通过extern crate运行使用crate的测试时，就会发生这种情况，例如:我如何从我的测试目录中的文件访问src目录中的文件?
在OS X上，rustc 1.12.0 (3191fbae9 2016-09-23)
感谢Matthieu M.为我指出正确的github问题!
修复是在我的Cargo.toml中放入以下内容:
crate-type = ["rlib", "dylib"]
如果你使用的是rustc选项
-C prefer-dynamic