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0741cc0ea7
Add `File already exists` error doc to `hard_link` function
## Description
If the link path already exists, the error `AlreadyExists` is returned. This commit adds this error to the docs.
I tested it with the current rust master version, this error was returned when there is already a link for the file is present.
This was the error returned:
```
[harshit:../Desktop/rust_compiler_testing/hard_link (master|…5)] cargo +stage1 run
Compiling hard_link v0.1.0 (/home/harshit/Desktop/rust_compiler_testing/hard_link)
Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
Running `target/debug/hard_link`
Err(Os { code: 17, kind: AlreadyExists, message: "File exists" })
```
This is my first PR on rust, any suggestions on which issue I can take next are most welcome 😄
Fixes #130117
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| benches | ||
| src | ||
| tests | ||
| build.rs | ||
| Cargo.toml | ||