[INFO] fetching crate task_kit 0.2.0...
[INFO] testing task_kit-0.2.0 against 1.64.0 for beta-1.65-1
[INFO] extracting crate task_kit 0.2.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate task_kit 0.2.0 on toolchain 1.64.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.64.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate task_kit 0.2.0
[INFO] finished tweaking crates.io crate task_kit 0.2.0
[INFO] tweaked toml for crates.io crate task_kit 0.2.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.64.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.64.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded slab v0.3.0
[INFO] [stderr]   Downloaded tokio-timer v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,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" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d1cd00eb6e6ea2a7969240779edeaeff35b24be85036c63b883ba933028a15f" "/opt/rustwide/cargo-home/bin/cargo" "+1.64.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] abae994ca674f3bdebee57b30a59a133648caa0f0f102f6cbb03fd4c040658d0
[INFO] running `Command { std: "docker" "start" "-a" "abae994ca674f3bdebee57b30a59a133648caa0f0f102f6cbb03fd4c040658d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "abae994ca674f3bdebee57b30a59a133648caa0f0f102f6cbb03fd4c040658d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abae994ca674f3bdebee57b30a59a133648caa0f0f102f6cbb03fd4c040658d0", kill_on_drop: false }`
[INFO] [stdout] abae994ca674f3bdebee57b30a59a133648caa0f0f102f6cbb03fd4c040658d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,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" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d1cd00eb6e6ea2a7969240779edeaeff35b24be85036c63b883ba933028a15f" "/opt/rustwide/cargo-home/bin/cargo" "+1.64.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3dd15d77d92d7cdb2300e29934060ef11182d575c2e6823f93c05271b2c8cb1f
[INFO] running `Command { std: "docker" "start" "-a" "3dd15d77d92d7cdb2300e29934060ef11182d575c2e6823f93c05271b2c8cb1f", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling task_kit v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/runner/task_queue.rs:6:41
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct TaskQueue(Arc<RwLock<Vec<Box<Executable>>>>);
[INFO] [stdout]   |                                         ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 6 - pub struct TaskQueue(Arc<RwLock<Vec<Box<Executable>>>>);
[INFO] [stdout] 6 + pub struct TaskQueue(Arc<RwLock<Vec<Box<dyn Executable>>>>);
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/task/task.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |   task: Box<FnMut() -> State<T, E> + 'a>,
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 51 -   task: Box<FnMut() -> State<T, E> + 'a>,
[INFO] [stdout] 51 +   task: Box<dyn FnMut() -> State<T, E> + 'a>,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/task_queue_set.rs:22:50
[INFO] [stdout]    |
[INFO] [stdout] 22 |   pub fn steal_from_rand_queue(&self) -> Vec<Box<Executable>> {
[INFO] [stdout]    |                                                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 -   pub fn steal_from_rand_queue(&self) -> Vec<Box<Executable>> {
[INFO] [stdout] 22 +   pub fn steal_from_rand_queue(&self) -> Vec<Box<dyn Executable>> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/task_queue_set.rs:33:46
[INFO] [stdout]    |
[INFO] [stdout] 33 |   pub fn push_to_rand_queue(&self, task: Box<Executable>) {
[INFO] [stdout]    |                                              ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 33 -   pub fn push_to_rand_queue(&self, task: Box<Executable>) {
[INFO] [stdout] 33 +   pub fn push_to_rand_queue(&self, task: Box<dyn Executable>) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/task_queue.rs:13:44
[INFO] [stdout]    |
[INFO] [stdout] 13 |   pub fn append(&self, tasks: &mut Vec<Box<Executable>>) {
[INFO] [stdout]    |                                            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 13 -   pub fn append(&self, tasks: &mut Vec<Box<Executable>>) {
[INFO] [stdout] 13 +   pub fn append(&self, tasks: &mut Vec<Box<dyn Executable>>) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/task_queue.rs:17:34
[INFO] [stdout]    |
[INFO] [stdout] 17 |   pub fn insert(&self, task: Box<Executable>) {
[INFO] [stdout]    |                                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 17 -   pub fn insert(&self, task: Box<Executable>) {
[INFO] [stdout] 17 +   pub fn insert(&self, task: Box<dyn Executable>) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/task_queue.rs:21:34
[INFO] [stdout]    |
[INFO] [stdout] 21 |   pub fn split(&self) -> Vec<Box<Executable>> {
[INFO] [stdout]    |                                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 21 -   pub fn split(&self) -> Vec<Box<Executable>> {
[INFO] [stdout] 21 +   pub fn split(&self) -> Vec<Box<dyn Executable>> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/task_queue.rs:32:36
[INFO] [stdout]    |
[INFO] [stdout] 32 |   pub fn next(&self) -> Option<Box<Executable>> {
[INFO] [stdout]    |                                    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 32 -   pub fn next(&self) -> Option<Box<Executable>> {
[INFO] [stdout] 32 +   pub fn next(&self) -> Option<Box<dyn Executable>> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.86s
[INFO] running `Command { std: "docker" "inspect" "3dd15d77d92d7cdb2300e29934060ef11182d575c2e6823f93c05271b2c8cb1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dd15d77d92d7cdb2300e29934060ef11182d575c2e6823f93c05271b2c8cb1f", kill_on_drop: false }`
[INFO] [stdout] 3dd15d77d92d7cdb2300e29934060ef11182d575c2e6823f93c05271b2c8cb1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,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" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d1cd00eb6e6ea2a7969240779edeaeff35b24be85036c63b883ba933028a15f" "/opt/rustwide/cargo-home/bin/cargo" "+1.64.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5a53e47128546015ae91dac8d86e0705ee935633a4dba333adcdf28b2fa4116
[INFO] running `Command { std: "docker" "start" "-a" "b5a53e47128546015ae91dac8d86e0705ee935633a4dba333adcdf28b2fa4116", kill_on_drop: false }`
[INFO] [stderr]    Compiling slab v0.3.0
[INFO] [stderr]    Compiling futures v0.1.31
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/runner/task_queue.rs:6:41
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct TaskQueue(Arc<RwLock<Vec<Box<Executable>>>>);
[INFO] [stdout]   |                                         ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 6 - pub struct TaskQueue(Arc<RwLock<Vec<Box<Executable>>>>);
[INFO] [stdout] 6 + pub struct TaskQueue(Arc<RwLock<Vec<Box<dyn Executable>>>>);
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/task/task.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |   task: Box<FnMut() -> State<T, E> + 'a>,
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 51 -   task: Box<FnMut() -> State<T, E> + 'a>,
[INFO] [stdout] 51 +   task: Box<dyn FnMut() -> State<T, E> + 'a>,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/task_queue_set.rs:22:50
[INFO] [stdout]    |
[INFO] [stdout] 22 |   pub fn steal_from_rand_queue(&self) -> Vec<Box<Executable>> {
[INFO] [stdout]    |                                                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 -   pub fn steal_from_rand_queue(&self) -> Vec<Box<Executable>> {
[INFO] [stdout] 22 +   pub fn steal_from_rand_queue(&self) -> Vec<Box<dyn Executable>> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/task_queue_set.rs:33:46
[INFO] [stdout]    |
[INFO] [stdout] 33 |   pub fn push_to_rand_queue(&self, task: Box<Executable>) {
[INFO] [stdout]    |                                              ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 33 -   pub fn push_to_rand_queue(&self, task: Box<Executable>) {
[INFO] [stdout] 33 +   pub fn push_to_rand_queue(&self, task: Box<dyn Executable>) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/task_queue.rs:13:44
[INFO] [stdout]    |
[INFO] [stdout] 13 |   pub fn append(&self, tasks: &mut Vec<Box<Executable>>) {
[INFO] [stdout]    |                                            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 13 -   pub fn append(&self, tasks: &mut Vec<Box<Executable>>) {
[INFO] [stdout] 13 +   pub fn append(&self, tasks: &mut Vec<Box<dyn Executable>>) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/task_queue.rs:17:34
[INFO] [stdout]    |
[INFO] [stdout] 17 |   pub fn insert(&self, task: Box<Executable>) {
[INFO] [stdout]    |                                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 17 -   pub fn insert(&self, task: Box<Executable>) {
[INFO] [stdout] 17 +   pub fn insert(&self, task: Box<dyn Executable>) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/task_queue.rs:21:34
[INFO] [stdout]    |
[INFO] [stdout] 21 |   pub fn split(&self) -> Vec<Box<Executable>> {
[INFO] [stdout]    |                                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 21 -   pub fn split(&self) -> Vec<Box<Executable>> {
[INFO] [stdout] 21 +   pub fn split(&self) -> Vec<Box<dyn Executable>> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/task_queue.rs:32:36
[INFO] [stdout]    |
[INFO] [stdout] 32 |   pub fn next(&self) -> Option<Box<Executable>> {
[INFO] [stdout]    |                                    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 32 -   pub fn next(&self) -> Option<Box<Executable>> {
[INFO] [stdout] 32 +   pub fn next(&self) -> Option<Box<dyn Executable>> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tokio-timer v0.1.2
[INFO] [stderr]    Compiling task_kit v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/runner/task_queue.rs:6:41
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct TaskQueue(Arc<RwLock<Vec<Box<Executable>>>>);
[INFO] [stdout]   |                                         ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 6 - pub struct TaskQueue(Arc<RwLock<Vec<Box<Executable>>>>);
[INFO] [stdout] 6 + pub struct TaskQueue(Arc<RwLock<Vec<Box<dyn Executable>>>>);
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/task/task.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |   task: Box<FnMut() -> State<T, E> + 'a>,
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 51 -   task: Box<FnMut() -> State<T, E> + 'a>,
[INFO] [stdout] 51 +   task: Box<dyn FnMut() -> State<T, E> + 'a>,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/task_queue_set.rs:22:50
[INFO] [stdout]    |
[INFO] [stdout] 22 |   pub fn steal_from_rand_queue(&self) -> Vec<Box<Executable>> {
[INFO] [stdout]    |                                                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 -   pub fn steal_from_rand_queue(&self) -> Vec<Box<Executable>> {
[INFO] [stdout] 22 +   pub fn steal_from_rand_queue(&self) -> Vec<Box<dyn Executable>> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/task_queue_set.rs:33:46
[INFO] [stdout]    |
[INFO] [stdout] 33 |   pub fn push_to_rand_queue(&self, task: Box<Executable>) {
[INFO] [stdout]    |                                              ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 33 -   pub fn push_to_rand_queue(&self, task: Box<Executable>) {
[INFO] [stdout] 33 +   pub fn push_to_rand_queue(&self, task: Box<dyn Executable>) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/task_queue.rs:13:44
[INFO] [stdout]    |
[INFO] [stdout] 13 |   pub fn append(&self, tasks: &mut Vec<Box<Executable>>) {
[INFO] [stdout]    |                                            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 13 -   pub fn append(&self, tasks: &mut Vec<Box<Executable>>) {
[INFO] [stdout] 13 +   pub fn append(&self, tasks: &mut Vec<Box<dyn Executable>>) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/task_queue.rs:17:34
[INFO] [stdout]    |
[INFO] [stdout] 17 |   pub fn insert(&self, task: Box<Executable>) {
[INFO] [stdout]    |                                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 17 -   pub fn insert(&self, task: Box<Executable>) {
[INFO] [stdout] 17 +   pub fn insert(&self, task: Box<dyn Executable>) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/task_queue.rs:21:34
[INFO] [stdout]    |
[INFO] [stdout] 21 |   pub fn split(&self) -> Vec<Box<Executable>> {
[INFO] [stdout]    |                                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 21 -   pub fn split(&self) -> Vec<Box<Executable>> {
[INFO] [stdout] 21 +   pub fn split(&self) -> Vec<Box<dyn Executable>> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/task_queue.rs:32:36
[INFO] [stdout]    |
[INFO] [stdout] 32 |   pub fn next(&self) -> Option<Box<Executable>> {
[INFO] [stdout]    |                                    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 32 -   pub fn next(&self) -> Option<Box<Executable>> {
[INFO] [stdout] 32 +   pub fn next(&self) -> Option<Box<dyn Executable>> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.65s
[INFO] running `Command { std: "docker" "inspect" "b5a53e47128546015ae91dac8d86e0705ee935633a4dba333adcdf28b2fa4116", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5a53e47128546015ae91dac8d86e0705ee935633a4dba333adcdf28b2fa4116", kill_on_drop: false }`
[INFO] [stdout] b5a53e47128546015ae91dac8d86e0705ee935633a4dba333adcdf28b2fa4116
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,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" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d1cd00eb6e6ea2a7969240779edeaeff35b24be85036c63b883ba933028a15f" "/opt/rustwide/cargo-home/bin/cargo" "+1.64.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3fa33bed3558133ad8e634e073b39537f0eba3eab36546a12fed99e81bd94d98
[INFO] running `Command { std: "docker" "start" "-a" "3fa33bed3558133ad8e634e073b39537f0eba3eab36546a12fed99e81bd94d98", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout] running 5 tests
[INFO] [stderr]  --> src/runner/task_queue.rs:6:41
[INFO] [stdout] test task::task::tests::can_chain_tasks ... ok
[INFO] [stderr]   |
[INFO] [stdout] test task::task::tests::can_create_task ... ok
[INFO] [stderr] 6 | pub struct TaskQueue(Arc<RwLock<Vec<Box<Executable>>>>);
[INFO] [stdout] test task::task::tests::can_wait_for_value ... ok
[INFO] [stderr]   |                                         ^^^^^^^^^^
[INFO] [stdout] test task::task::tests::can_use_done ... ok
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]   |
[INFO] [stderr] 6 - pub struct TaskQueue(Arc<RwLock<Vec<Box<Executable>>>>);
[INFO] [stderr] 6 + pub struct TaskQueue(Arc<RwLock<Vec<Box<dyn Executable>>>>);
[INFO] [stderr]   |
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/task/task.rs:51:13
[INFO] [stderr]    |
[INFO] [stderr] 51 |   task: Box<FnMut() -> State<T, E> + 'a>,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 51 -   task: Box<FnMut() -> State<T, E> + 'a>,
[INFO] [stderr] 51 +   task: Box<dyn FnMut() -> State<T, E> + 'a>,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/runner/task_queue_set.rs:22:50
[INFO] [stderr]    |
[INFO] [stderr] 22 |   pub fn steal_from_rand_queue(&self) -> Vec<Box<Executable>> {
[INFO] [stderr]    |                                                  ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 22 -   pub fn steal_from_rand_queue(&self) -> Vec<Box<Executable>> {
[INFO] [stderr] 22 +   pub fn steal_from_rand_queue(&self) -> Vec<Box<dyn Executable>> {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/runner/task_queue_set.rs:33:46
[INFO] [stderr]    |
[INFO] [stderr] 33 |   pub fn push_to_rand_queue(&self, task: Box<Executable>) {
[INFO] [stderr]    |                                              ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 33 -   pub fn push_to_rand_queue(&self, task: Box<Executable>) {
[INFO] [stderr] 33 +   pub fn push_to_rand_queue(&self, task: Box<dyn Executable>) {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/runner/task_queue.rs:13:44
[INFO] [stderr]    |
[INFO] [stderr] 13 |   pub fn append(&self, tasks: &mut Vec<Box<Executable>>) {
[INFO] [stderr]    |                                            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 13 -   pub fn append(&self, tasks: &mut Vec<Box<Executable>>) {
[INFO] [stderr] 13 +   pub fn append(&self, tasks: &mut Vec<Box<dyn Executable>>) {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/runner/task_queue.rs:17:34
[INFO] [stderr]    |
[INFO] [stderr] 17 |   pub fn insert(&self, task: Box<Executable>) {
[INFO] [stderr]    |                                  ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 17 -   pub fn insert(&self, task: Box<Executable>) {
[INFO] [stderr] 17 +   pub fn insert(&self, task: Box<dyn Executable>) {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/runner/task_queue.rs:21:34
[INFO] [stderr]    |
[INFO] [stderr] 21 |   pub fn split(&self) -> Vec<Box<Executable>> {
[INFO] [stderr]    |                                  ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 21 -   pub fn split(&self) -> Vec<Box<Executable>> {
[INFO] [stderr] 21 +   pub fn split(&self) -> Vec<Box<dyn Executable>> {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/runner/task_queue.rs:32:36
[INFO] [stderr]    |
[INFO] [stderr] 32 |   pub fn next(&self) -> Option<Box<Executable>> {
[INFO] [stderr]    |                                    ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 32 -   pub fn next(&self) -> Option<Box<Executable>> {
[INFO] [stderr] 32 +   pub fn next(&self) -> Option<Box<dyn Executable>> {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `task_kit` (lib) generated 8 warnings
[INFO] [stderr] warning: `task_kit` (lib test) generated 8 warnings (8 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/task_kit-24bd48335159bca4)
[INFO] [stdout] test task::task::tests::can_poll_for_value ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests task_kit
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/task/task.rs - task::task::Task (line 19) ... ok
[INFO] [stdout] test src/task/task.rs - task::task::Task::with (line 148) ... ok
[INFO] [stdout] test src/task/task.rs - task::task::Task (line 37) ... ok
[INFO] [stdout] test src/task/task.rs - task::task::Task::join (line 180) ... ok
[INFO] [stdout] test src/task/task.rs - task::task::Task::from (line 104) ... ok
[INFO] [stdout] test src/task/task.rs - task::task::Task::new (line 75) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.27s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3fa33bed3558133ad8e634e073b39537f0eba3eab36546a12fed99e81bd94d98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fa33bed3558133ad8e634e073b39537f0eba3eab36546a12fed99e81bd94d98", kill_on_drop: false }`
[INFO] [stdout] 3fa33bed3558133ad8e634e073b39537f0eba3eab36546a12fed99e81bd94d98