[INFO] fetching crate some_local_executor 0.1.2...
[INFO] checking some_local_executor-0.1.2 against 49a6044d37d694890450f52ceaceb66277a36b1e for pr-161154
[INFO] extracting crate some_local_executor 0.1.2 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate some_local_executor 0.1.2
[INFO] finished tweaking crates.io crate some_local_executor 0.1.2
[INFO] tweaked toml for crates.io crate some_local_executor 0.1.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate some_local_executor 0.1.2 on toolchain 49a6044d37d694890450f52ceaceb66277a36b1e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+49a6044d37d694890450f52ceaceb66277a36b1e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate some_local_executor 0.1.2 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" "+49a6044d37d694890450f52ceaceb66277a36b1e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4e2c681e355b8293e6d9ad9d5a9d47146c0c6f250259b0c0af51178b856261fc
[INFO] running `Command { std: "docker" "start" "4e2c681e355b8293e6d9ad9d5a9d47146c0c6f250259b0c0af51178b856261fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e2c681e355b8293e6d9ad9d5a9d47146c0c6f250259b0c0af51178b856261fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4e2c681e355b8293e6d9ad9d5a9d47146c0c6f250259b0c0af51178b856261fc" "/opt/rustwide/cargo-home/bin/cargo" "+49a6044d37d694890450f52ceaceb66277a36b1e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e2c681e355b8293e6d9ad9d5a9d47146c0c6f250259b0c0af51178b856261fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4e2c681e355b8293e6d9ad9d5a9d47146c0c6f250259b0c0af51178b856261fc" "/opt/rustwide/cargo-home/bin/cargo" "+49a6044d37d694890450f52ceaceb66277a36b1e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling logwise_proc v0.1.1
[INFO] [stderr]     Checking priority v0.1.1
[INFO] [stderr]     Checking some_executor v0.4.1
[INFO] [stderr]     Checking logwise v0.2.3
[INFO] [stderr]     Checking some_local_executor v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:118:26
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn new(task: Pin<Box<(dyn DynLocalSpawnedTask<Executor<'executor>> + 'executor)>>, sender: Sender) -> Self {
[INFO] [stdout]     |                          ^                                                        ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 118 -     fn new(task: Pin<Box<(dyn DynLocalSpawnedTask<Executor<'executor>> + 'executor)>>, sender: Sender) -> Self {
[INFO] [stdout] 118 +     fn new(task: Pin<Box<dyn DynLocalSpawnedTask<Executor<'executor>> + 'executor>>, sender: Sender) -> Self {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:321:46
[INFO] [stdout]     |
[INFO] [stdout] 321 |     fn enqueue_task(&mut self, task: Pin<Box<(dyn DynLocalSpawnedTask<Executor<'tasks>> + 'tasks)>>) {
[INFO] [stdout]     |                                              ^                                                  ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 321 -     fn enqueue_task(&mut self, task: Pin<Box<(dyn DynLocalSpawnedTask<Executor<'tasks>> + 'tasks)>>) {
[INFO] [stdout] 321 +     fn enqueue_task(&mut self, task: Pin<Box<dyn DynLocalSpawnedTask<Executor<'tasks>> + 'tasks>>) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:370:118
[INFO] [stdout]     |
[INFO] [stdout] 370 | ...ture<Output=Box<dyn Any>>>>, Box<dyn ObserverNotified<(dyn Any + 'static)>>>) -> Box<dyn Observer<Value=Box<dyn Any>, Output = F...
[INFO] [stdout]     |                                                          ^                 ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 370 -     fn spawn_local_objsafe(&mut self, task: Task<Pin<Box<dyn Future<Output=Box<dyn Any>>>>, Box<dyn ObserverNotified<(dyn Any + 'static)>>>) -> Box<dyn Observer<Value=Box<dyn Any>, Output = FinishedObservation<Box<dyn Any>>>> {
[INFO] [stdout] 370 +     fn spawn_local_objsafe(&mut self, task: Task<Pin<Box<dyn Future<Output=Box<dyn Any>>>>, Box<dyn ObserverNotified<dyn Any + 'static>>>) -> Box<dyn Observer<Value=Box<dyn Any>, Output = FinishedObservation<Box<dyn Any>>>> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:376:131
[INFO] [stdout]     |
[INFO] [stdout] 376 | ...ture<Output=Box<dyn Any>>>>, Box<dyn ObserverNotified<(dyn Any + 'static)>>>) -> Box<dyn Future<Output=Box<dyn Observer<Value=Bo...
[INFO] [stdout]     |                                                          ^                 ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 376 -     fn spawn_local_objsafe_async<'s>(&'s mut self, task: Task<Pin<Box<dyn Future<Output=Box<dyn Any>>>>, Box<dyn ObserverNotified<(dyn Any + 'static)>>>) -> Box<dyn Future<Output=Box<dyn Observer<Value=Box<dyn Any>, Output = FinishedObservation<Box<dyn Any>>>>> + 's> {
[INFO] [stdout] 376 +     fn spawn_local_objsafe_async<'s>(&'s mut self, task: Task<Pin<Box<dyn Future<Output=Box<dyn Any>>>>, Box<dyn ObserverNotified<dyn Any + 'static>>>) -> Box<dyn Future<Output=Box<dyn Observer<Value=Box<dyn Any>, Output = FinishedObservation<Box<dyn Any>>>>> + 's> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:118:26
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn new(task: Pin<Box<(dyn DynLocalSpawnedTask<Executor<'executor>> + 'executor)>>, sender: Sender) -> Self {
[INFO] [stdout]     |                          ^                                                        ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 118 -     fn new(task: Pin<Box<(dyn DynLocalSpawnedTask<Executor<'executor>> + 'executor)>>, sender: Sender) -> Self {
[INFO] [stdout] 118 +     fn new(task: Pin<Box<dyn DynLocalSpawnedTask<Executor<'executor>> + 'executor>>, sender: Sender) -> Self {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:321:46
[INFO] [stdout]     |
[INFO] [stdout] 321 |     fn enqueue_task(&mut self, task: Pin<Box<(dyn DynLocalSpawnedTask<Executor<'tasks>> + 'tasks)>>) {
[INFO] [stdout]     |                                              ^                                                  ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 321 -     fn enqueue_task(&mut self, task: Pin<Box<(dyn DynLocalSpawnedTask<Executor<'tasks>> + 'tasks)>>) {
[INFO] [stdout] 321 +     fn enqueue_task(&mut self, task: Pin<Box<dyn DynLocalSpawnedTask<Executor<'tasks>> + 'tasks>>) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:370:118
[INFO] [stdout]     |
[INFO] [stdout] 370 | ...ture<Output=Box<dyn Any>>>>, Box<dyn ObserverNotified<(dyn Any + 'static)>>>) -> Box<dyn Observer<Value=Box<dyn Any>, Output = F...
[INFO] [stdout]     |                                                          ^                 ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 370 -     fn spawn_local_objsafe(&mut self, task: Task<Pin<Box<dyn Future<Output=Box<dyn Any>>>>, Box<dyn ObserverNotified<(dyn Any + 'static)>>>) -> Box<dyn Observer<Value=Box<dyn Any>, Output = FinishedObservation<Box<dyn Any>>>> {
[INFO] [stdout] 370 +     fn spawn_local_objsafe(&mut self, task: Task<Pin<Box<dyn Future<Output=Box<dyn Any>>>>, Box<dyn ObserverNotified<dyn Any + 'static>>>) -> Box<dyn Observer<Value=Box<dyn Any>, Output = FinishedObservation<Box<dyn Any>>>> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:376:131
[INFO] [stdout]     |
[INFO] [stdout] 376 | ...ture<Output=Box<dyn Any>>>>, Box<dyn ObserverNotified<(dyn Any + 'static)>>>) -> Box<dyn Future<Output=Box<dyn Observer<Value=Bo...
[INFO] [stdout]     |                                                          ^                 ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 376 -     fn spawn_local_objsafe_async<'s>(&'s mut self, task: Task<Pin<Box<dyn Future<Output=Box<dyn Any>>>>, Box<dyn ObserverNotified<(dyn Any + 'static)>>>) -> Box<dyn Future<Output=Box<dyn Observer<Value=Box<dyn Any>, Output = FinishedObservation<Box<dyn Any>>>>> + 's> {
[INFO] [stdout] 376 +     fn spawn_local_objsafe_async<'s>(&'s mut self, task: Task<Pin<Box<dyn Future<Output=Box<dyn Any>>>>, Box<dyn ObserverNotified<dyn Any + 'static>>>) -> Box<dyn Future<Output=Box<dyn Observer<Value=Box<dyn Any>, Output = FinishedObservation<Box<dyn Any>>>>> + 's> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `executor` as mutable more than once at a time
[INFO] [stdout]    --> src/lib.rs:447:13
[INFO] [stdout]     |
[INFO] [stdout] 445 |         let observer = executor.spawn_local(task);
[INFO] [stdout]     |                        -------- first mutable borrow occurs here
[INFO] [stdout] 446 |         for _ in 0..9 {
[INFO] [stdout] 447 |             executor.do_some();
[INFO] [stdout]     |             ^^^^^^^^ second mutable borrow occurs here
[INFO] [stdout] 448 |             assert_eq!(observer.observe(), Observation::Pending);
[INFO] [stdout]     |                        -------- first borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `executor` as mutable more than once at a time
[INFO] [stdout]    --> src/lib.rs:449:13
[INFO] [stdout]     |
[INFO] [stdout] 445 |         let observer = executor.spawn_local(task);
[INFO] [stdout]     |                        -------- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 449 |             executor.park_if_needed();
[INFO] [stdout]     |             ^^^^^^^^ second mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 452 |     }
[INFO] [stdout]     |     - first borrow might be used here, when `observer` is dropped and runs the destructor for type `impl Observer<Value = <PollCounter as Future>::Output>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0499`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `some_local_executor` (lib test) due to 2 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "4e2c681e355b8293e6d9ad9d5a9d47146c0c6f250259b0c0af51178b856261fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e2c681e355b8293e6d9ad9d5a9d47146c0c6f250259b0c0af51178b856261fc", kill_on_drop: false }`
[INFO] [stdout] 4e2c681e355b8293e6d9ad9d5a9d47146c0c6f250259b0c0af51178b856261fc
