[INFO] fetching crate squark 0.7.1...
[INFO] testing squark-0.7.1 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate squark 0.7.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate squark 0.7.1 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate squark 0.7.1
[INFO] finished tweaking crates.io crate squark 0.7.1
[INFO] tweaked toml for crates.io crate squark 0.7.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af97ea01deda9e395c9d725ab611dd12ea306ccca93afe69c8088313d6770d60
[INFO] running `Command { std: "docker" "start" "-a" "af97ea01deda9e395c9d725ab611dd12ea306ccca93afe69c8088313d6770d60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af97ea01deda9e395c9d725ab611dd12ea306ccca93afe69c8088313d6770d60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af97ea01deda9e395c9d725ab611dd12ea306ccca93afe69c8088313d6770d60", kill_on_drop: false }`
[INFO] [stdout] af97ea01deda9e395c9d725ab611dd12ea306ccca93afe69c8088313d6770d60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 268e7cb7b5d0ff60950e7a87dbc5191ef6d629a4aa0b16d4f42a3882df1198a4
[INFO] running `Command { std: "docker" "start" "-a" "268e7cb7b5d0ff60950e7a87dbc5191ef6d629a4aa0b16d4f42a3882df1198a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling libc v0.2.123
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling itoa v1.0.1
[INFO] [stderr]    Compiling ryu v1.0.9
[INFO] [stderr]    Compiling futures v0.1.31
[INFO] [stderr]    Compiling uuid v0.7.4
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling squark v0.7.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vdom.rs:30:42
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub(crate) type HandlerFunction<A> = Box<Fn(HandlerArg) -> Option<A>>;
[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 2018) 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] 30 - pub(crate) type HandlerFunction<A> = Box<Fn(HandlerArg) -> Option<A>>;
[INFO] [stdout] 30 + pub(crate) type HandlerFunction<A> = Box<dyn Fn(HandlerArg) -> Option<A>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:75:28
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub struct Task<A>(Vec<Box<Future<Item = A, Error = ()>>>);
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 75 - pub struct Task<A>(Vec<Box<Future<Item = A, Error = ()>>>);
[INFO] [stdout] 75 + pub struct Task<A>(Vec<Box<dyn Future<Item = A, Error = ()>>>);
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:102:89
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn handle_future<T: Serialize + 'static, E: Serialize + 'static>(&self, future: Box<Future<Item = T, Error = E>>);
[INFO] [stdout]     |                                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 102 -     fn handle_future<T: Serialize + 'static, E: Serialize + 'static>(&self, future: Box<Future<Item = T, Error = E>>);
[INFO] [stdout] 102 +     fn handle_future<T: Serialize + 'static, E: Serialize + 'static>(&self, future: Box<dyn Future<Item = T, Error = E>>);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:151:37
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn emit_future(&self, task: Box<Future<Item = A::Action, Error = ()>>) {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 151 -     fn emit_future(&self, task: Box<Future<Item = A::Action, Error = ()>>) {
[INFO] [stdout] 151 +     fn emit_future(&self, task: Box<dyn Future<Item = A::Action, Error = ()>>) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:158:51
[INFO] [stdout]     |
[INFO] [stdout] 158 |     fn pop_handler(&self, id: &str) -> Option<Box<Fn(HandlerArg)>> {
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 158 -     fn pop_handler(&self, id: &str) -> Option<Box<Fn(HandlerArg)>> {
[INFO] [stdout] 158 +     fn pop_handler(&self, id: &str) -> Option<Box<dyn Fn(HandlerArg)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:88:42
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn into_futures(self) -> Vec<Box<Future<Item = A, Error = ()>>> {
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 88 -     pub fn into_futures(self) -> Vec<Box<Future<Item = A, Error = ()>>> {
[INFO] [stdout] 88 +     pub fn into_futures(self) -> Vec<Box<dyn Future<Item = A, Error = ()>>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:92:40
[INFO] [stdout]    |
[INFO] [stdout] 92 |     pub fn push(&mut self, future: Box<Future<Item = A, Error = ()>>) {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 92 -     pub fn push(&mut self, future: Box<Future<Item = A, Error = ()>>) {
[INFO] [stdout] 92 +     pub fn push(&mut self, future: Box<dyn Future<Item = A, Error = ()>>) {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.44s
[INFO] running `Command { std: "docker" "inspect" "268e7cb7b5d0ff60950e7a87dbc5191ef6d629a4aa0b16d4f42a3882df1198a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "268e7cb7b5d0ff60950e7a87dbc5191ef6d629a4aa0b16d4f42a3882df1198a4", kill_on_drop: false }`
[INFO] [stdout] 268e7cb7b5d0ff60950e7a87dbc5191ef6d629a4aa0b16d4f42a3882df1198a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3706db4ca13d28082cbf2336e04c582520a49e194a0789346f1c0b13f931685a
[INFO] running `Command { std: "docker" "start" "-a" "3706db4ca13d28082cbf2336e04c582520a49e194a0789346f1c0b13f931685a", kill_on_drop: false }`
[INFO] [stderr]    Compiling squark v0.7.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vdom.rs:30:42
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub(crate) type HandlerFunction<A> = Box<Fn(HandlerArg) -> Option<A>>;
[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 2018) 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] 30 - pub(crate) type HandlerFunction<A> = Box<Fn(HandlerArg) -> Option<A>>;
[INFO] [stdout] 30 + pub(crate) type HandlerFunction<A> = Box<dyn Fn(HandlerArg) -> Option<A>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:75:28
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub struct Task<A>(Vec<Box<Future<Item = A, Error = ()>>>);
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 75 - pub struct Task<A>(Vec<Box<Future<Item = A, Error = ()>>>);
[INFO] [stdout] 75 + pub struct Task<A>(Vec<Box<dyn Future<Item = A, Error = ()>>>);
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:102:89
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn handle_future<T: Serialize + 'static, E: Serialize + 'static>(&self, future: Box<Future<Item = T, Error = E>>);
[INFO] [stdout]     |                                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 102 -     fn handle_future<T: Serialize + 'static, E: Serialize + 'static>(&self, future: Box<Future<Item = T, Error = E>>);
[INFO] [stdout] 102 +     fn handle_future<T: Serialize + 'static, E: Serialize + 'static>(&self, future: Box<dyn Future<Item = T, Error = E>>);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:151:37
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn emit_future(&self, task: Box<Future<Item = A::Action, Error = ()>>) {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 151 -     fn emit_future(&self, task: Box<Future<Item = A::Action, Error = ()>>) {
[INFO] [stdout] 151 +     fn emit_future(&self, task: Box<dyn Future<Item = A::Action, Error = ()>>) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:158:51
[INFO] [stdout]     |
[INFO] [stdout] 158 |     fn pop_handler(&self, id: &str) -> Option<Box<Fn(HandlerArg)>> {
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 158 -     fn pop_handler(&self, id: &str) -> Option<Box<Fn(HandlerArg)>> {
[INFO] [stdout] 158 +     fn pop_handler(&self, id: &str) -> Option<Box<dyn Fn(HandlerArg)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:88:42
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn into_futures(self) -> Vec<Box<Future<Item = A, Error = ()>>> {
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 88 -     pub fn into_futures(self) -> Vec<Box<Future<Item = A, Error = ()>>> {
[INFO] [stdout] 88 +     pub fn into_futures(self) -> Vec<Box<dyn Future<Item = A, Error = ()>>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:92:40
[INFO] [stdout]    |
[INFO] [stdout] 92 |     pub fn push(&mut self, future: Box<Future<Item = A, Error = ()>>) {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 92 -     pub fn push(&mut self, future: Box<Future<Item = A, Error = ()>>) {
[INFO] [stdout] 92 +     pub fn push(&mut self, future: Box<dyn Future<Item = A, Error = ()>>) {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vdom.rs:30:42
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub(crate) type HandlerFunction<A> = Box<Fn(HandlerArg) -> Option<A>>;
[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 2018) 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] 30 - pub(crate) type HandlerFunction<A> = Box<Fn(HandlerArg) -> Option<A>>;
[INFO] [stdout] 30 + pub(crate) type HandlerFunction<A> = Box<dyn Fn(HandlerArg) -> Option<A>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:75:28
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub struct Task<A>(Vec<Box<Future<Item = A, Error = ()>>>);
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 75 - pub struct Task<A>(Vec<Box<Future<Item = A, Error = ()>>>);
[INFO] [stdout] 75 + pub struct Task<A>(Vec<Box<dyn Future<Item = A, Error = ()>>>);
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:102:89
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn handle_future<T: Serialize + 'static, E: Serialize + 'static>(&self, future: Box<Future<Item = T, Error = E>>);
[INFO] [stdout]     |                                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 102 -     fn handle_future<T: Serialize + 'static, E: Serialize + 'static>(&self, future: Box<Future<Item = T, Error = E>>);
[INFO] [stdout] 102 +     fn handle_future<T: Serialize + 'static, E: Serialize + 'static>(&self, future: Box<dyn Future<Item = T, Error = E>>);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:151:37
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn emit_future(&self, task: Box<Future<Item = A::Action, Error = ()>>) {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 151 -     fn emit_future(&self, task: Box<Future<Item = A::Action, Error = ()>>) {
[INFO] [stdout] 151 +     fn emit_future(&self, task: Box<dyn Future<Item = A::Action, Error = ()>>) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:158:51
[INFO] [stdout]     |
[INFO] [stdout] 158 |     fn pop_handler(&self, id: &str) -> Option<Box<Fn(HandlerArg)>> {
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 158 -     fn pop_handler(&self, id: &str) -> Option<Box<Fn(HandlerArg)>> {
[INFO] [stdout] 158 +     fn pop_handler(&self, id: &str) -> Option<Box<dyn Fn(HandlerArg)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:88:42
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn into_futures(self) -> Vec<Box<Future<Item = A, Error = ()>>> {
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 88 -     pub fn into_futures(self) -> Vec<Box<Future<Item = A, Error = ()>>> {
[INFO] [stdout] 88 +     pub fn into_futures(self) -> Vec<Box<dyn Future<Item = A, Error = ()>>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:92:40
[INFO] [stdout]    |
[INFO] [stdout] 92 |     pub fn push(&mut self, future: Box<Future<Item = A, Error = ()>>) {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 92 -     pub fn push(&mut self, future: Box<Future<Item = A, Error = ()>>) {
[INFO] [stdout] 92 +     pub fn push(&mut self, future: Box<dyn Future<Item = A, Error = ()>>) {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.76s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/squark-6bab9ed10e050bf2)
[INFO] running `Command { std: "docker" "inspect" "3706db4ca13d28082cbf2336e04c582520a49e194a0789346f1c0b13f931685a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3706db4ca13d28082cbf2336e04c582520a49e194a0789346f1c0b13f931685a", kill_on_drop: false }`
[INFO] [stdout] 3706db4ca13d28082cbf2336e04c582520a49e194a0789346f1c0b13f931685a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a334c62a0660672e04ef3d9dc5c725b828ee7f6869aff3f5cb681eb854fc26e8
[INFO] running `Command { std: "docker" "start" "-a" "a334c62a0660672e04ef3d9dc5c725b828ee7f6869aff3f5cb681eb854fc26e8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vdom.rs:30:42
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub(crate) type HandlerFunction<A> = Box<Fn(HandlerArg) -> Option<A>>;
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) 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] 30 - pub(crate) type HandlerFunction<A> = Box<Fn(HandlerArg) -> Option<A>>;
[INFO] [stderr] 30 + pub(crate) type HandlerFunction<A> = Box<dyn Fn(HandlerArg) -> Option<A>>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:75:28
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub struct Task<A>(Vec<Box<Future<Item = A, Error = ()>>>);
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) 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] 75 - pub struct Task<A>(Vec<Box<Future<Item = A, Error = ()>>>);
[INFO] [stderr] 75 + pub struct Task<A>(Vec<Box<dyn Future<Item = A, Error = ()>>>);
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:102:89
[INFO] [stderr]     |
[INFO] [stderr] 102 |     fn handle_future<T: Serialize + 'static, E: Serialize + 'static>(&self, future: Box<Future<Item = T, Error = E>>);
[INFO] [stderr]     |                                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) 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] 102 -     fn handle_future<T: Serialize + 'static, E: Serialize + 'static>(&self, future: Box<Future<Item = T, Error = E>>);
[INFO] [stderr] 102 +     fn handle_future<T: Serialize + 'static, E: Serialize + 'static>(&self, future: Box<dyn Future<Item = T, Error = E>>);
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:151:37
[INFO] [stderr]     |
[INFO] [stderr] 151 |     fn emit_future(&self, task: Box<Future<Item = A::Action, Error = ()>>) {
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) 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] 151 -     fn emit_future(&self, task: Box<Future<Item = A::Action, Error = ()>>) {
[INFO] [stderr] 151 +     fn emit_future(&self, task: Box<dyn Future<Item = A::Action, Error = ()>>) {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:158:51
[INFO] [stderr]     |
[INFO] [stderr] 158 |     fn pop_handler(&self, id: &str) -> Option<Box<Fn(HandlerArg)>> {
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) 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] 158 -     fn pop_handler(&self, id: &str) -> Option<Box<Fn(HandlerArg)>> {
[INFO] [stderr] 158 +     fn pop_handler(&self, id: &str) -> Option<Box<dyn Fn(HandlerArg)>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:88:42
[INFO] [stderr]    |
[INFO] [stderr] 88 |     pub fn into_futures(self) -> Vec<Box<Future<Item = A, Error = ()>>> {
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) 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] 88 -     pub fn into_futures(self) -> Vec<Box<Future<Item = A, Error = ()>>> {
[INFO] [stderr] 88 +     pub fn into_futures(self) -> Vec<Box<dyn Future<Item = A, Error = ()>>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:92:40
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn push(&mut self, future: Box<Future<Item = A, Error = ()>>) {
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) 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] 92 -     pub fn push(&mut self, future: Box<Future<Item = A, Error = ()>>) {
[INFO] [stderr] 92 +     pub fn push(&mut self, future: Box<dyn Future<Item = A, Error = ()>>) {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: `squark` (lib) generated 7 warnings
[INFO] [stderr] warning: `squark` (lib test) generated 7 warnings (7 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.22s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/squark-6bab9ed10e050bf2)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests squark
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a334c62a0660672e04ef3d9dc5c725b828ee7f6869aff3f5cb681eb854fc26e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a334c62a0660672e04ef3d9dc5c725b828ee7f6869aff3f5cb681eb854fc26e8", kill_on_drop: false }`
[INFO] [stdout] a334c62a0660672e04ef3d9dc5c725b828ee7f6869aff3f5cb681eb854fc26e8