Failure to use rusti's :load command

[minhnhdo]

error log

WARNING: The Rust REPL is experimental and may be
unstable. If you encounter problems, please use the
compiler instead. Type :help for help.
rusti> :load fact
compiling fact.rs...
warning: missing crate link meta `name`, using `fact` as default
warning: missing crate link meta `vers`, using `0.0` as default
pushed .
crates loaded: fact
rusti> fact::factorial(12)
<anon>:5:12: 5:28 error: can't find crate for `fact`
<anon>:5             extern mod fact;
                     ^~~~~~~~~~~~~~~~
task <unnamed> failed at 'explicit failure', /home/minh/Documents/Workplace/rust/rust/src/libsyntax/diagnostic.rs:69
rusti>

content of fact.rs

fn factorial(n: uint) -> uint {
    let mut r = 1;
    for i in range(2, n) {
        r *= i;
    }
    r
}

After running the above section, a file named fact.o is created.

[minhnhdo]

I'd love to work on fixing this if you guys are short on man power.

[minhnhdo]

when I manually compile fact.rs using rustc --lib fact.rs, resulting in a libfact-<hash>-0.0.so file, and then :load fact in rusti, rusti can find the library but it dumps core after I call fact::factorial(12)

output

WARNING: The Rust REPL is experimental and may be
unstable. If you encounter problems, please use the
compiler instead. Type :help for help.
rusti> :load fact
crates loaded: fact
rusti> fact::factorial(12)
[1]    8330 abort (core dumped)  rusti