gistfile1.rs

The error:

rustc: x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc
/vagrant/rust/src/librustc/metadata/loader.rs:209:32: 281:10 error: closure requires unique access to `self` but `self.filesearch` is already borrowed
/vagrant/rust/src/librustc/metadata/loader.rs:209         self.filesearch.search(|path| {
/vagrant/rust/src/librustc/metadata/loader.rs:210             let file = match path.filename_str() {
/vagrant/rust/src/librustc/metadata/loader.rs:211                 None => return FileDoesntMatch,
/vagrant/rust/src/librustc/metadata/loader.rs:212                 Some(file) => file,
/vagrant/rust/src/librustc/metadata/loader.rs:213             };
/vagrant/rust/src/librustc/metadata/loader.rs:214             if file.starts_with(rlib_prefix.as_slice()) &&
                                                  ...
/vagrant/rust/src/librustc/metadata/loader.rs:217:23: 217:27 note: borrow occurs due to use of `self` in closure
/vagrant/rust/src/librustc/metadata/loader.rs:217                 match self.try_match(file, rlib_prefix.as_slice(), ".rlib") {
                                                                        ^~~~
/vagrant/rust/src/librustc/metadata/loader.rs:209:9: 209:24 note: previous borrow of `self.filesearch` occurs here; the immutable borrow prevents subsequent moves or mutable borrows of `self.filesearch` until the borrow ends
/vagrant/rust/src/librustc/metadata/loader.rs:209         self.filesearch.search(|path| {
                                                          ^~~~~~~~~~~~~~~
/vagrant/rust/src/librustc/metadata/loader.rs:281:11: 281:11 note: previous borrow ends here
/vagrant/rust/src/librustc/metadata/loader.rs:209         self.filesearch.search(|path| {
...
/vagrant/rust/src/librustc/metadata/loader.rs:281         });


The line in question is at line 58.


self.filesearch.search(|path| {
    let file = match path.filename_str() {
        None => return FileDoesntMatch,
        Some(file) => file,
    };
    if file.starts_with(rlib_prefix.as_slice()) &&
            file.ends_with(".rlib") {
        info!("rlib candidate: {}", path.display());
        match self.try_match(file, rlib_prefix.as_slice(), ".rlib") {
            Some(hash) => {
                info!("rlib accepted, hash: {}", hash);
                let slot = candidates.find_or_insert_with(hash, |_| {
                    (HashSet::new(), HashSet::new(), HashSet::new())
                });
                let (ref mut rlibs, _, _) = *slot;
                rlibs.insert(fs::realpath(path).unwrap());
                FileMatches
            }
            None => {
                info!("rlib rejected");
                FileDoesntMatch
            }
        }
    } else if file.starts_with(rlib_prefix.as_slice()) &&
            file.ends_with(staticlib_suffix) {

        match self.try_match(file, 
                             rlib_prefix.as_slice(),
                             staticlib_suffix) {
            Some(hash) => {
                self.rejected_via_staticlib.push(CrateMismatch {
                    path: path.clone(),
                    got: "test".to_string()
                });
                info!("staticlib rejected");
                FileDoesntMatch
            }
            None => {
                info!("staticlib rejected");
                FileDoesntMatch
            }
        }
    } else if file.starts_with(dylib_prefix.as_slice()) &&
            file.ends_with(dysuffix){
        info!("dylib candidate: {}", path.display());
        match self.try_match(file,
                             dylib_prefix.as_slice(),
                             dysuffix) {
            Some(hash) => {
                info!("dylib accepted, hash: {}", hash);
                let slot = candidates.find_or_insert_with(hash, |_| {
                    (HashSet::new(), HashSet::new(), HashSet::new())
                });
                let (_, _, ref mut dylibs) = *slot;
                dylibs.insert(fs::realpath(path).unwrap());
                FileMatches
            }
            None => {
                info!("dylib rejected");
                FileDoesntMatch
            }
        }
    } else {
        FileDoesntMatch
    }
});