Life time error

gistfile1.txt

[bbatha@dev threadpool-rs]% cargo test
   Compiling threadpool v0.0.1 (file:///home/bbatha/projects/threadpool-rs)
src/lib.rs:42:12: 42:16 error: `pool` does not live long enough
src/lib.rs:42            pool.execute(move || {
                         ^~~~
src/lib.rs:38:19: 47:6 note: reference must be valid for the block at 38:18...
src/lib.rs:38     fn it_works() {
src/lib.rs:39         let mut pool = ScopedThreadPool::new(2);
src/lib.rs:40
src/lib.rs:41         for _ in (0..3) {
src/lib.rs:42            pool.execute(move || {
src/lib.rs:43                 thread::sleep_ms(1000);
              ...
src/lib.rs:39:49: 47:6 note: ...but borrowed value is only valid for the block suffix following statement 0 at 39:48
src/lib.rs:39         let mut pool = ScopedThreadPool::new(2);
src/lib.rs:40
src/lib.rs:41         for _ in (0..3) {
src/lib.rs:42            pool.execute(move || {
src/lib.rs:43                 thread::sleep_ms(1000);
src/lib.rs:44                 println!("Things are happening!");
              ...
error: aborting due to previous error
Build failed, waiting for other jobs to finish...
Could not compile `threadpool`.