373 lines
12 KiB
Plaintext
373 lines
12 KiB
Plaintext
error[E0499]: cannot borrow `x` as mutable more than once at a time
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--> $DIR/borrowck-describe-lvalue.rs:254:13
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LL | let y = &mut x;
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| ------ first mutable borrow occurs here
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LL | &mut x;
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| ^^^^^^ second mutable borrow occurs here
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LL | *y = 1;
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| ------ first borrow later used here
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error[E0499]: cannot borrow `x` as mutable more than once at a time
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--> $DIR/borrowck-describe-lvalue.rs:264:20
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LL | let y = &mut x;
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| ------ first mutable borrow occurs here
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LL | &mut x;
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| ^^^^^^ second mutable borrow occurs here
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LL | *y = 1;
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| ------ first borrow later used here
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error: captured variable cannot escape `FnMut` closure body
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--> $DIR/borrowck-describe-lvalue.rs:262:16
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LL | let mut x = 0;
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| ----- variable defined here
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LL | || {
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| - inferred to be a `FnMut` closure
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LL | / || {
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LL | | let y = &mut x;
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| | - variable captured here
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LL | | &mut x;
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LL | | *y = 1;
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LL | | drop(y);
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LL | | }
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| |_________________^ returns a closure that contains a reference to a captured variable, which then escapes the closure body
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= note: `FnMut` closures only have access to their captured variables while they are executing...
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= note: ...therefore, they cannot allow references to captured variables to escape
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help: consider adding 'move' keyword before the nested closure
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LL | move || {
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| ++++
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error[E0503]: cannot use `f.x` because it was mutably borrowed
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--> $DIR/borrowck-describe-lvalue.rs:37:9
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LL | let x = f.x();
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| ----- borrow of `f` occurs here
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LL | f.x;
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| ^^^ use of borrowed `f`
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LL | drop(x);
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| - borrow later used here
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error[E0503]: cannot use `g.0` because it was mutably borrowed
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--> $DIR/borrowck-describe-lvalue.rs:44:9
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LL | let x = g.x();
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| ----- borrow of `g` occurs here
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LL | g.0;
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| ^^^ use of borrowed `g`
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LL | drop(x);
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| - borrow later used here
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error[E0503]: cannot use `h.0` because it was mutably borrowed
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--> $DIR/borrowck-describe-lvalue.rs:51:9
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LL | let x = &mut h.0;
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| -------- borrow of `h.0` occurs here
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LL | h.0;
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| ^^^ use of borrowed `h.0`
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LL | drop(x);
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| - borrow later used here
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error[E0503]: cannot use `e.0` because it was mutably borrowed
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--> $DIR/borrowck-describe-lvalue.rs:59:20
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LL | let x = e.x();
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| ----- borrow of `e` occurs here
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LL | match e {
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LL | Baz::X(value) => value
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| ^^^^^ use of borrowed `e`
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LL | };
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LL | drop(x);
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| - borrow later used here
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error[E0503]: cannot use `u.a` because it was mutably borrowed
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--> $DIR/borrowck-describe-lvalue.rs:67:9
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LL | let x = &mut u.a;
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| -------- borrow of `u.a` occurs here
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LL | u.a;
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| ^^^ use of borrowed `u.a`
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LL | drop(x);
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| - borrow later used here
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error[E0503]: cannot use `f.x` because it was mutably borrowed
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--> $DIR/borrowck-describe-lvalue.rs:74:9
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LL | let x = f.x();
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| ----- borrow of `*f` occurs here
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LL | f.x;
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| ^^^ use of borrowed `*f`
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LL | drop(x);
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| - borrow later used here
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error[E0503]: cannot use `g.0` because it was mutably borrowed
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--> $DIR/borrowck-describe-lvalue.rs:81:9
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LL | let x = g.x();
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| ----- borrow of `*g` occurs here
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LL | g.0;
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| ^^^ use of borrowed `*g`
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LL | drop(x);
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| - borrow later used here
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error[E0503]: cannot use `h.0` because it was mutably borrowed
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--> $DIR/borrowck-describe-lvalue.rs:88:9
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LL | let x = &mut h.0;
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| -------- borrow of `h.0` occurs here
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LL | h.0;
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| ^^^ use of borrowed `h.0`
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LL | drop(x);
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| - borrow later used here
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error[E0503]: cannot use `e.0` because it was mutably borrowed
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--> $DIR/borrowck-describe-lvalue.rs:96:20
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LL | let x = e.x();
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| ----- borrow of `*e` occurs here
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LL | match *e {
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LL | Baz::X(value) => value
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| ^^^^^ use of borrowed `*e`
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...
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LL | drop(x);
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| - borrow later used here
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error[E0503]: cannot use `u.a` because it was mutably borrowed
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--> $DIR/borrowck-describe-lvalue.rs:105:9
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LL | let x = &mut u.a;
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| -------- borrow of `u.a` occurs here
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LL | u.a;
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| ^^^ use of borrowed `u.a`
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LL | drop(x);
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| - borrow later used here
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error[E0503]: cannot use `v[..]` because it was mutably borrowed
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--> $DIR/borrowck-describe-lvalue.rs:113:15
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LL | let x = &mut v;
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| ------ borrow of `v` occurs here
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LL | match v {
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LL | &[x, _, .., _, _] => println!("{}", x),
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| ^ use of borrowed `v`
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...
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LL | drop(x);
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| - borrow later used here
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error[E0503]: cannot use `v[..]` because it was mutably borrowed
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--> $DIR/borrowck-describe-lvalue.rs:118:18
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LL | let x = &mut v;
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| ------ borrow of `v` occurs here
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...
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LL | &[_, x, .., _, _] => println!("{}", x),
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| ^ use of borrowed `v`
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...
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LL | drop(x);
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| - borrow later used here
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error[E0503]: cannot use `v[..]` because it was mutably borrowed
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--> $DIR/borrowck-describe-lvalue.rs:123:25
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LL | let x = &mut v;
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| ------ borrow of `v` occurs here
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...
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LL | &[_, _, .., x, _] => println!("{}", x),
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| ^ use of borrowed `v`
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...
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LL | drop(x);
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| - borrow later used here
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error[E0503]: cannot use `v[..]` because it was mutably borrowed
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--> $DIR/borrowck-describe-lvalue.rs:128:28
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LL | let x = &mut v;
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| ------ borrow of `v` occurs here
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...
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LL | &[_, _, .., _, x] => println!("{}", x),
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| ^ use of borrowed `v`
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...
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LL | drop(x);
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| - borrow later used here
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error[E0503]: cannot use `v[..]` because it was mutably borrowed
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--> $DIR/borrowck-describe-lvalue.rs:139:15
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LL | let x = &mut v;
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| ------ borrow of `v` occurs here
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LL | match v {
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LL | &[x @ ..] => println!("{:?}", x),
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| ^ use of borrowed `v`
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...
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LL | drop(x);
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| - borrow later used here
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error[E0503]: cannot use `v[..]` because it was mutably borrowed
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--> $DIR/borrowck-describe-lvalue.rs:144:18
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LL | let x = &mut v;
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| ------ borrow of `v` occurs here
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...
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LL | &[_, x @ ..] => println!("{:?}", x),
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| ^ use of borrowed `v`
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...
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LL | drop(x);
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| - borrow later used here
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error[E0503]: cannot use `v[..]` because it was mutably borrowed
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--> $DIR/borrowck-describe-lvalue.rs:149:15
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LL | let x = &mut v;
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| ------ borrow of `v` occurs here
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...
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LL | &[x @ .., _] => println!("{:?}", x),
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| ^ use of borrowed `v`
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...
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LL | drop(x);
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| - borrow later used here
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error[E0503]: cannot use `v[..]` because it was mutably borrowed
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--> $DIR/borrowck-describe-lvalue.rs:154:18
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LL | let x = &mut v;
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| ------ borrow of `v` occurs here
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...
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LL | &[_, x @ .., _] => println!("{:?}", x),
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| ^ use of borrowed `v`
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...
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LL | drop(x);
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| - borrow later used here
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error[E0503]: cannot use `e` because it was mutably borrowed
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--> $DIR/borrowck-describe-lvalue.rs:166:15
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LL | let x = &mut e;
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| ------ borrow of `e` occurs here
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LL | match e {
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| ^ use of borrowed `e`
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...
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LL | drop(x);
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| - borrow later used here
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error[E0502]: cannot borrow `e.0` as immutable because it is also borrowed as mutable
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--> $DIR/borrowck-describe-lvalue.rs:168:18
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LL | let x = &mut e;
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| ------ mutable borrow occurs here
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...
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LL | E::A(ref ax) =>
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| ^^^^^^ immutable borrow occurs here
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...
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LL | drop(x);
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| - mutable borrow later used here
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error[E0502]: cannot borrow `e.x` as immutable because it is also borrowed as mutable
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--> $DIR/borrowck-describe-lvalue.rs:171:23
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LL | let x = &mut e;
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| ------ mutable borrow occurs here
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...
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LL | E::B { x: ref bx } =>
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| ^^^^^^ immutable borrow occurs here
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...
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LL | drop(x);
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| - mutable borrow later used here
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error[E0502]: cannot borrow `s.y.0` as immutable because it is also borrowed as mutable
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--> $DIR/borrowck-describe-lvalue.rs:184:22
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LL | let x = &mut s;
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| ------ mutable borrow occurs here
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LL | match s {
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LL | S { y: (ref y0, _), .. } =>
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| ^^^^^^ immutable borrow occurs here
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...
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LL | drop(x);
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| - mutable borrow later used here
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error[E0502]: cannot borrow `s.x.y` as immutable because it is also borrowed as mutable
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--> $DIR/borrowck-describe-lvalue.rs:190:28
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LL | let x = &mut s;
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| ------ mutable borrow occurs here
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...
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LL | S { x: F { y: ref x0, .. }, .. } =>
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| ^^^^^^ immutable borrow occurs here
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...
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LL | drop(x);
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| - mutable borrow later used here
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error[E0503]: cannot use `*v` because it was mutably borrowed
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--> $DIR/borrowck-describe-lvalue.rs:232:9
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LL | let x = &mut v;
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| ------ borrow of `v` occurs here
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LL | v[0].y;
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| ^^^^ use of borrowed `v`
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...
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LL | drop(x);
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| - borrow later used here
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error[E0503]: cannot use `v[_].y` because it was mutably borrowed
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--> $DIR/borrowck-describe-lvalue.rs:232:9
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LL | let x = &mut v;
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| ------ borrow of `v` occurs here
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LL | v[0].y;
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| ^^^^^^ use of borrowed `v`
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...
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LL | drop(x);
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| - borrow later used here
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error[E0502]: cannot borrow `v[..].x` as immutable because it is also borrowed as mutable
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--> $DIR/borrowck-describe-lvalue.rs:243:24
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LL | let x = &mut v;
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| ------ mutable borrow occurs here
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LL | match v {
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LL | &[_, F {x: ref xf, ..}] => println!("{}", xf),
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| ^^^^^^ immutable borrow occurs here
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...
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LL | drop(x);
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| - mutable borrow later used here
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error[E0502]: cannot borrow `*block.current` as immutable because it is also borrowed as mutable
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--> $DIR/borrowck-describe-lvalue.rs:206:29
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LL | let x = &mut block;
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| ---------- mutable borrow occurs here
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LL | let p: &'a u8 = &*block.current;
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| ^^^^^^^^^^^^^^^ immutable borrow occurs here
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...
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LL | drop(x);
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| - mutable borrow later used here
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error[E0502]: cannot borrow `*block.current` as immutable because it is also borrowed as mutable
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--> $DIR/borrowck-describe-lvalue.rs:221:33
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LL | let x = &mut block;
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| ---------- mutable borrow occurs here
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LL | let p : *const u8 = &*(*block).current;
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| ^^^^^^^^^^^^^^^^^^ immutable borrow occurs here
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...
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LL | drop(x);
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| - mutable borrow later used here
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error[E0382]: use of moved value: `x`
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--> $DIR/borrowck-describe-lvalue.rs:274:22
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LL | drop(x);
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| - value moved here
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LL | drop(x);
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| ^ value used here after move
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= note: move occurs because `x` has type `Vec<i32>`, which does not implement the `Copy` trait
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error: aborting due to 32 previous errors
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Some errors have detailed explanations: E0382, E0499, E0502, E0503.
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For more information about an error, try `rustc --explain E0382`.
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