Auto merge of #12820 - linyihai:broken-symlink-target, r=weihanglo

add detailed message when target folder path is invalid

# What does this PR try to resolve?
close #12789

add more detailed message when target folder path is invalid

# How should we test and review this PR?

Before this PR, if the target folder refer to broken symbolic link like /a/b/c, then run cargo build, the output is:

```
error: Not a directory (os error 20)
```
the detailed error message is missing.

This PR will add the error context for it, the finall output will be
```
cargo build
error: failed to create directory `/root/workspace/playground/target`

Caused by:
  Not a directory (os error 20)
```

Author: bors

crates/cargo-util/src/paths.rs

@@ -694,7 +694,8 @@ pub fn create_dir_all_excluded_from_backups_atomic(p: impl AsRef<Path>) -> Resul
     // we can infer from it's another cargo process doing work.
     if let Err(e) = fs::rename(tempdir.path(), path) {
         if !path.exists() {
-            return Err(anyhow::Error::from(e));
+            return Err(anyhow::Error::from(e))
+                .with_context(|| format!("failed to create directory `{}`", path.display()));
         }
     }
     Ok(())