[INFO] fetching crate recompose_core 0.5.0...
[INFO] checking recompose_core-0.5.0 against try#8e819ff5434466e9a823e03871a1775ac7d84ddf for pr-156027
[INFO] extracting crate recompose_core 0.5.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate recompose_core 0.5.0
[INFO] finished tweaking crates.io crate recompose_core 0.5.0
[INFO] tweaked toml for crates.io crate recompose_core 0.5.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate recompose_core 0.5.0 on toolchain 8e819ff5434466e9a823e03871a1775ac7d84ddf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8e819ff5434466e9a823e03871a1775ac7d84ddf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate recompose_core 0.5.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8e819ff5434466e9a823e03871a1775ac7d84ddf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] error[E0499]: cannot borrow `scope.states` as mutable more than once at a time
[INFO] [stdout]    --> src/lib.rs:306:22
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let child = self.compose(scope);
[INFO] [stdout]     |                                  ----- first mutable borrow occurs here
[INFO] [stdout] 305 |
[INFO] [stdout] 306 |         for state in scope.states.iter_mut() {
[INFO] [stdout]     |                      ^^^^^^^^^^^^ second mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 344 |     }
[INFO] [stdout]     |     - first borrow might be used here, when `child` is dropped and runs the destructor for type `impl Compose + '_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0503]: cannot use `scope.entity` because it was mutably borrowed
[INFO] [stdout]    --> src/lib.rs:316:35
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let child = self.compose(scope);
[INFO] [stdout]     |                                  ----- `*scope` is borrowed here
[INFO] [stdout] ...
[INFO] [stdout] 316 |         let parent_entity = match scope.entity {
[INFO] [stdout]     |                                   ^^^^^^^^^^^^ use of borrowed `*scope`
[INFO] [stdout] ...
[INFO] [stdout] 327 |             child_scope.composer = Arc::new(child);
[INFO] [stdout]     |                                             ----- borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0503]: cannot use `scope.entity.0` because it was mutably borrowed
[INFO] [stdout]    --> src/lib.rs:317:18
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let child = self.compose(scope);
[INFO] [stdout]     |                                  ----- `*scope` is borrowed here
[INFO] [stdout] ...
[INFO] [stdout] 317 |             Some(entity) => entity,
[INFO] [stdout]     |                  ^^^^^^ use of borrowed `*scope`
[INFO] [stdout] ...
[INFO] [stdout] 327 |             child_scope.composer = Arc::new(child);
[INFO] [stdout]     |                                             ----- borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0503]: cannot use `scope.parent_entity` because it was mutably borrowed
[INFO] [stdout]    --> src/lib.rs:318:21
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let child = self.compose(scope);
[INFO] [stdout]     |                                  ----- `*scope` is borrowed here
[INFO] [stdout] ...
[INFO] [stdout] 318 |             None => scope.parent_entity,
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^ use of borrowed `*scope`
[INFO] [stdout] ...
[INFO] [stdout] 327 |             child_scope.composer = Arc::new(child);
[INFO] [stdout]     |                                             ----- borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0503]: cannot use `scope.entity` because it was mutably borrowed
[INFO] [stdout]    --> src/lib.rs:321:40
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let child = self.compose(scope);
[INFO] [stdout]     |                                  ----- `*scope` is borrowed here
[INFO] [stdout] ...
[INFO] [stdout] 321 |         let parent_child_index = match scope.entity {
[INFO] [stdout]     |                                        ^^^^^^^^^^^^ use of borrowed `*scope`
[INFO] [stdout] ...
[INFO] [stdout] 327 |             child_scope.composer = Arc::new(child);
[INFO] [stdout]     |                                             ----- borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `scope.child_index` as immutable because it is also borrowed as mutable
[INFO] [stdout]    --> src/lib.rs:323:21
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let child = self.compose(scope);
[INFO] [stdout]     |                                  ----- mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 323 |             None => scope.child_index.clone(),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^ immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 327 |             child_scope.composer = Arc::new(child);
[INFO] [stdout]     |                                             ----- mutable borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `scope.children` as mutable more than once at a time
[INFO] [stdout]    --> src/lib.rs:326:36
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let child = self.compose(scope);
[INFO] [stdout]     |                                  ----- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 326 |         if let Some(child_scope) = scope.children.first_mut() {
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^ second mutable borrow occurs here
[INFO] [stdout] 327 |             child_scope.composer = Arc::new(child);
[INFO] [stdout]     |                                             ----- first borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `scope.children` as mutable more than once at a time
[INFO] [stdout]    --> src/lib.rs:343:9
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let child = self.compose(scope);
[INFO] [stdout]     |                                  ----- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 343 |         scope.children.push(child_scope);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^ second mutable borrow occurs here
[INFO] [stdout] 344 |     }
[INFO] [stdout]     |     - first borrow might be used here, when `child_compose` is dropped and runs the `Drop` code for type `Arc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0499, E0502, E0503.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0499`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `recompose_core` (lib) due to 8 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0499]: cannot borrow `scope.states` as mutable more than once at a time
[INFO] [stdout]    --> src/lib.rs:306:22
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let child = self.compose(scope);
[INFO] [stdout]     |                                  ----- first mutable borrow occurs here
[INFO] [stdout] 305 |
[INFO] [stdout] 306 |         for state in scope.states.iter_mut() {
[INFO] [stdout]     |                      ^^^^^^^^^^^^ second mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 344 |     }
[INFO] [stdout]     |     - first borrow might be used here, when `child` is dropped and runs the destructor for type `impl Compose + '_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0503]: cannot use `scope.entity` because it was mutably borrowed
[INFO] [stdout]    --> src/lib.rs:316:35
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let child = self.compose(scope);
[INFO] [stdout]     |                                  ----- `*scope` is borrowed here
[INFO] [stdout] ...
[INFO] [stdout] 316 |         let parent_entity = match scope.entity {
[INFO] [stdout]     |                                   ^^^^^^^^^^^^ use of borrowed `*scope`
[INFO] [stdout] ...
[INFO] [stdout] 327 |             child_scope.composer = Arc::new(child);
[INFO] [stdout]     |                                             ----- borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0503]: cannot use `scope.entity.0` because it was mutably borrowed
[INFO] [stdout]    --> src/lib.rs:317:18
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let child = self.compose(scope);
[INFO] [stdout]     |                                  ----- `*scope` is borrowed here
[INFO] [stdout] ...
[INFO] [stdout] 317 |             Some(entity) => entity,
[INFO] [stdout]     |                  ^^^^^^ use of borrowed `*scope`
[INFO] [stdout] ...
[INFO] [stdout] 327 |             child_scope.composer = Arc::new(child);
[INFO] [stdout]     |                                             ----- borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0503]: cannot use `scope.parent_entity` because it was mutably borrowed
[INFO] [stdout]    --> src/lib.rs:318:21
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let child = self.compose(scope);
[INFO] [stdout]     |                                  ----- `*scope` is borrowed here
[INFO] [stdout] ...
[INFO] [stdout] 318 |             None => scope.parent_entity,
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^ use of borrowed `*scope`
[INFO] [stdout] ...
[INFO] [stdout] 327 |             child_scope.composer = Arc::new(child);
[INFO] [stdout]     |                                             ----- borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0503]: cannot use `scope.entity` because it was mutably borrowed
[INFO] [stdout]    --> src/lib.rs:321:40
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let child = self.compose(scope);
[INFO] [stdout]     |                                  ----- `*scope` is borrowed here
[INFO] [stdout] ...
[INFO] [stdout] 321 |         let parent_child_index = match scope.entity {
[INFO] [stdout]     |                                        ^^^^^^^^^^^^ use of borrowed `*scope`
[INFO] [stdout] ...
[INFO] [stdout] 327 |             child_scope.composer = Arc::new(child);
[INFO] [stdout]     |                                             ----- borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `scope.child_index` as immutable because it is also borrowed as mutable
[INFO] [stdout]    --> src/lib.rs:323:21
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let child = self.compose(scope);
[INFO] [stdout]     |                                  ----- mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 323 |             None => scope.child_index.clone(),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^ immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 327 |             child_scope.composer = Arc::new(child);
[INFO] [stdout]     |                                             ----- mutable borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `scope.children` as mutable more than once at a time
[INFO] [stdout]    --> src/lib.rs:326:36
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let child = self.compose(scope);
[INFO] [stdout]     |                                  ----- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 326 |         if let Some(child_scope) = scope.children.first_mut() {
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^ second mutable borrow occurs here
[INFO] [stdout] 327 |             child_scope.composer = Arc::new(child);
[INFO] [stdout]     |                                             ----- first borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `scope.children` as mutable more than once at a time
[INFO] [stdout]    --> src/lib.rs:343:9
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let child = self.compose(scope);
[INFO] [stdout]     |                                  ----- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 343 |         scope.children.push(child_scope);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^ second mutable borrow occurs here
[INFO] [stdout] 344 |     }
[INFO] [stdout]     |     - first borrow might be used here, when `child_compose` is dropped and runs the `Drop` code for type `Arc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0499, E0502, E0503.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0499`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `recompose_core` (lib test) due to 8 previous errors
[INFO] running `Command { std: "docker" "inspect" "dcff1561a8ca62ae23ea82e1260c163d5fdf31643156ac5532acb13844c526ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcff1561a8ca62ae23ea82e1260c163d5fdf31643156ac5532acb13844c526ad", kill_on_drop: false }`
[INFO] [stdout] dcff1561a8ca62ae23ea82e1260c163d5fdf31643156ac5532acb13844c526ad
