Memory woes

gistfile1.txt

example.rs:16:18: 16:25 error: `src` does not live long enough
example.rs:16             src: &'a src
                                                                        ^~~~~~~
example.rs:14:40: 18:6 note: reference must be valid for the lifetime &'a  as defined on the block at 14:39...
example.rs:14     pub fn make(src : R) -> Lex<'a, R> {
example.rs:15         Lex {
example.rs:16             src: &'a src
example.rs:17         }
example.rs:18     }
example.rs:14:40: 18:6 note: ...but borrowed value is only valid for the block at 14:39
example.rs:14     pub fn make(src : R) -> Lex<'a, R> {
example.rs:15         Lex {
example.rs:16             src: &'a src
example.rs:17         }
example.rs:18     }
example.rs:21:26: 21:34 error: cannot borrow immutable dereference of `&`-pointer `*self.src` as mutable
example.rs:21         let line = match self.src.read_line() {
                                                                                ^~~~~~~~
example.rs:27:19: 27:23 error: `line` does not live long enough
example.rs:27         let brw = line.as_slice();
                                                                         ^~~~
example.rs:20:47: 29:6 note: reference must be valid for the lifetime &'a  as defined on the block at 20:46...
example.rs:20     pub fn results(&mut self) -> Transfer<'a> {
example.rs:21         let line = match self.src.read_line() {
example.rs:22             Ok(line) => {
example.rs:23                 line
example.rs:24             },
example.rs:25             _ => ~""
                                                       ...
example.rs:20:47: 29:6 note: ...but borrowed value is only valid for the block at 20:46
example.rs:20     pub fn results(&mut self) -> Transfer<'a> {
example.rs:21         let line = match self.src.read_line() {
example.rs:22             Ok(line) => {
example.rs:23                 line
example.rs:24             },
example.rs:25             _ => ~""
                                                       ...