[INFO] cloning repository https://github.com/sindreij/rusty-elm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sindreij/rusty-elm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsindreij%2Frusty-elm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsindreij%2Frusty-elm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c4379987ee9cb1b568e955154491d413b4e0687d
[INFO] testing sindreij/rusty-elm against master#0d13f6afeba4935499abe0c9a07426c94492c94e for pr-96025
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsindreij%2Frusty-elm" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sindreij/rusty-elm on toolchain 0d13f6afeba4935499abe0c9a07426c94492c94e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sindreij/rusty-elm
[INFO] finished tweaking git repo https://github.com/sindreij/rusty-elm
[INFO] tweaked toml for git repo https://github.com/sindreij/rusty-elm written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/sindreij/rusty-elm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 91f54c7d2a1205f907693a60af62f3a42b8e568769793b9fbd33cfeba4865a22
[INFO] running `Command { std: "docker" "start" "-a" "91f54c7d2a1205f907693a60af62f3a42b8e568769793b9fbd33cfeba4865a22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91f54c7d2a1205f907693a60af62f3a42b8e568769793b9fbd33cfeba4865a22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91f54c7d2a1205f907693a60af62f3a42b8e568769793b9fbd33cfeba4865a22", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5bf5b84a651818b9e893925f26490d35619ab6879ac83097b9561e0b7228b328
[INFO] running `Command { std: "docker" "start" "-a" "5bf5b84a651818b9e893925f26490d35619ab6879ac83097b9561e0b7228b328", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling lazy_static v1.2.0
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[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling wasm-bindgen v0.2.27
[INFO] [stderr]    Compiling regex v1.0.6
[INFO] [stderr]    Compiling ucd-util v0.1.2
[INFO] [stderr]    Compiling rustc-demangle v0.1.9
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[INFO] [stderr]    Compiling utf8-ranges v1.0.2
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[INFO] [stderr]    Compiling serde v1.0.80
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[INFO] [stderr]    Compiling log v0.4.6
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[INFO] [stderr]    Compiling heck v0.3.0
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling quote v0.6.9
[INFO] [stderr]    Compiling syn v0.15.18
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling nom v4.1.1
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling weedle v0.8.0
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling serde_json v1.0.32
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.27
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.27
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.27
[INFO] [stderr]    Compiling failure v0.1.3
[INFO] [stderr]    Compiling wasm-bindgen-webidl v0.2.21
[INFO] [stderr]    Compiling js-sys v0.3.4
[INFO] [stderr]    Compiling console_error_panic_hook v0.1.5
[INFO] [stderr]    Compiling web-sys v0.3.4
[INFO] [stderr]    Compiling willow v0.1.0 (/opt/rustwide/workdir/willow)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> willow/src/html.rs:44:25
[INFO] [stdout]    |
[INFO] [stdout] 44 |             .join("\n");;
[INFO] [stdout]    |                         ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> willow/src/program.rs:10:19
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub view: Box<Fn(&Model) -> Html<Msg>>,
[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] 10 -     pub view: Box<Fn(&Model) -> Html<Msg>>,
[INFO] [stdout] 10 +     pub view: Box<dyn Fn(&Model) -> Html<Msg>>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> willow/src/program.rs:11:21
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub update: Box<Fn(&Msg, &mut Model) -> Box<Cmd<Msg>>>,
[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] 11 -     pub update: Box<Fn(&Msg, &mut Model) -> Box<Cmd<Msg>>>,
[INFO] [stdout] 11 +     pub update: Box<dyn Fn(&Msg, &mut Model) -> Box<Cmd<Msg>>>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> willow/src/program.rs:11:49
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub update: Box<Fn(&Msg, &mut Model) -> Box<Cmd<Msg>>>,
[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] 11 -     pub update: Box<Fn(&Msg, &mut Model) -> Box<Cmd<Msg>>>,
[INFO] [stdout] 11 +     pub update: Box<Fn(&Msg, &mut Model) -> Box<dyn Cmd<Msg>>>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> willow/src/html.rs:69:75
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub struct JsClosure(pub Rc<RefCell<Option<wasm_bindgen::closure::Closure<Fn(web_sys::Event)>>>>);
[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] 69 - pub struct JsClosure(pub Rc<RefCell<Option<wasm_bindgen::closure::Closure<Fn(web_sys::Event)>>>>);
[INFO] [stdout] 69 + pub struct JsClosure(pub Rc<RefCell<Option<wasm_bindgen::closure::Closure<dyn Fn(web_sys::Event)>>>>);
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> willow/src/html.rs:172:46
[INFO] [stdout]     |
[INFO] [stdout] 172 | pub struct RcEventClosure<Input, Msg>(pub Rc<EventClosure<Input, Msg>>);
[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] 172 - pub struct RcEventClosure<Input, Msg>(pub Rc<EventClosure<Input, Msg>>);
[INFO] [stdout] 172 + pub struct RcEventClosure<Input, Msg>(pub Rc<dyn EventClosure<Input, Msg>>);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> willow/src/html.rs:138:32
[INFO] [stdout]     |
[INFO] [stdout] 138 |     fn eq_rc(&self, other: &Rc<EventClosure<Input, Msg>>) -> bool;
[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] 138 -     fn eq_rc(&self, other: &Rc<EventClosure<Input, Msg>>) -> bool;
[INFO] [stdout] 138 +     fn eq_rc(&self, other: &Rc<dyn EventClosure<Input, Msg>>) -> bool;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> willow/src/html.rs:122:74
[INFO] [stdout]     |
[INFO] [stdout] 122 |     pub fn set_js_closure(&self, closure: wasm_bindgen::closure::Closure<Fn(web_sys::Event)>) {
[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] 122 -     pub fn set_js_closure(&self, closure: wasm_bindgen::closure::Closure<Fn(web_sys::Event)>) {
[INFO] [stdout] 122 +     pub fn set_js_closure(&self, closure: wasm_bindgen::closure::Closure<dyn Fn(web_sys::Event)>) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> willow/src/html.rs:160:32
[INFO] [stdout]     |
[INFO] [stdout] 160 |     fn eq_rc(&self, other: &Rc<EventClosure<Input, Msg>>) -> bool {
[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] 160 -     fn eq_rc(&self, other: &Rc<EventClosure<Input, Msg>>) -> bool {
[INFO] [stdout] 160 +     fn eq_rc(&self, other: &Rc<dyn EventClosure<Input, Msg>>) -> bool {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> willow/src/program.rs:24:47
[INFO] [stdout]    |
[INFO] [stdout] 24 |         UpdateFn: Fn(&Msg, &mut Model) -> Box<Cmd<Msg>> + 'static,
[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] 24 -         UpdateFn: Fn(&Msg, &mut Model) -> Box<Cmd<Msg>> + 'static,
[INFO] [stdout] 24 +         UpdateFn: Fn(&Msg, &mut Model) -> Box<dyn Cmd<Msg>> + 'static,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> willow/src/html.rs:161:31
[INFO] [stdout]     |
[INFO] [stdout] 161 |         let other = other as &Any;
[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] 161 -         let other = other as &Any;
[INFO] [stdout] 161 +         let other = other as &dyn Any;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> willow/src/render.rs:344:27
[INFO] [stdout]     |
[INFO] [stdout] 344 |                 }) as Box<Fn(_)>);
[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] 344 -                 }) as Box<Fn(_)>);
[INFO] [stdout] 344 +                 }) as Box<dyn Fn(_)>);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling example-counter v0.1.0 (/opt/rustwide/workdir/examples/counter)
[INFO] [stderr]    Compiling example-todomvc v0.1.0 (/opt/rustwide/workdir/examples/todomvc)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> examples/counter/src/app.rs:23:48
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn update(msg: &Msg, model: &mut Model) -> Box<Cmd<Msg>> {
[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] 23 - fn update(msg: &Msg, model: &mut Model) -> Box<Cmd<Msg>> {
[INFO] [stdout] 23 + fn update(msg: &Msg, model: &mut Model) -> Box<dyn Cmd<Msg>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> examples/todomvc/src/app.rs:61:48
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn update(msg: &Msg, model: &mut Model) -> Box<Cmd<Msg>> {
[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] 61 - fn update(msg: &Msg, model: &mut Model) -> Box<Cmd<Msg>> {
[INFO] [stdout] 61 + fn update(msg: &Msg, model: &mut Model) -> Box<dyn Cmd<Msg>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.53s
[INFO] running `Command { std: "docker" "inspect" "5bf5b84a651818b9e893925f26490d35619ab6879ac83097b9561e0b7228b328", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bf5b84a651818b9e893925f26490d35619ab6879ac83097b9561e0b7228b328", kill_on_drop: false }`
[INFO] [stdout] 5bf5b84a651818b9e893925f26490d35619ab6879ac83097b9561e0b7228b328
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f63178b360dfda3253df44e8c08022a599ee5db4247139d819b6273e95b0be40
[INFO] running `Command { std: "docker" "start" "-a" "f63178b360dfda3253df44e8c08022a599ee5db4247139d819b6273e95b0be40", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures v0.1.25
[INFO] [stderr]    Compiling scoped-tls v0.1.2
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.2.27
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> willow/src/html.rs:44:25
[INFO] [stdout]    |
[INFO] [stdout] 44 |             .join("\n");;
[INFO] [stdout]    |                         ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> willow/src/program.rs:10:19
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub view: Box<Fn(&Model) -> Html<Msg>>,
[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] 10 -     pub view: Box<Fn(&Model) -> Html<Msg>>,
[INFO] [stdout] 10 +     pub view: Box<dyn Fn(&Model) -> Html<Msg>>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> willow/src/program.rs:11:21
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub update: Box<Fn(&Msg, &mut Model) -> Box<Cmd<Msg>>>,
[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] 11 -     pub update: Box<Fn(&Msg, &mut Model) -> Box<Cmd<Msg>>>,
[INFO] [stdout] 11 +     pub update: Box<dyn Fn(&Msg, &mut Model) -> Box<Cmd<Msg>>>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> willow/src/program.rs:11:49
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub update: Box<Fn(&Msg, &mut Model) -> Box<Cmd<Msg>>>,
[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] 11 -     pub update: Box<Fn(&Msg, &mut Model) -> Box<Cmd<Msg>>>,
[INFO] [stdout] 11 +     pub update: Box<Fn(&Msg, &mut Model) -> Box<dyn Cmd<Msg>>>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> willow/src/html.rs:69:75
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub struct JsClosure(pub Rc<RefCell<Option<wasm_bindgen::closure::Closure<Fn(web_sys::Event)>>>>);
[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] 69 - pub struct JsClosure(pub Rc<RefCell<Option<wasm_bindgen::closure::Closure<Fn(web_sys::Event)>>>>);
[INFO] [stdout] 69 + pub struct JsClosure(pub Rc<RefCell<Option<wasm_bindgen::closure::Closure<dyn Fn(web_sys::Event)>>>>);
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> willow/src/html.rs:172:46
[INFO] [stdout]     |
[INFO] [stdout] 172 | pub struct RcEventClosure<Input, Msg>(pub Rc<EventClosure<Input, Msg>>);
[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] 172 - pub struct RcEventClosure<Input, Msg>(pub Rc<EventClosure<Input, Msg>>);
[INFO] [stdout] 172 + pub struct RcEventClosure<Input, Msg>(pub Rc<dyn EventClosure<Input, Msg>>);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> willow/src/html.rs:138:32
[INFO] [stdout]     |
[INFO] [stdout] 138 |     fn eq_rc(&self, other: &Rc<EventClosure<Input, Msg>>) -> bool;
[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] 138 -     fn eq_rc(&self, other: &Rc<EventClosure<Input, Msg>>) -> bool;
[INFO] [stdout] 138 +     fn eq_rc(&self, other: &Rc<dyn EventClosure<Input, Msg>>) -> bool;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> willow/src/html.rs:122:74
[INFO] [stdout]     |
[INFO] [stdout] 122 |     pub fn set_js_closure(&self, closure: wasm_bindgen::closure::Closure<Fn(web_sys::Event)>) {
[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] 122 -     pub fn set_js_closure(&self, closure: wasm_bindgen::closure::Closure<Fn(web_sys::Event)>) {
[INFO] [stdout] 122 +     pub fn set_js_closure(&self, closure: wasm_bindgen::closure::Closure<dyn Fn(web_sys::Event)>) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> willow/src/html.rs:160:32
[INFO] [stdout]     |
[INFO] [stdout] 160 |     fn eq_rc(&self, other: &Rc<EventClosure<Input, Msg>>) -> bool {
[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] 160 -     fn eq_rc(&self, other: &Rc<EventClosure<Input, Msg>>) -> bool {
[INFO] [stdout] 160 +     fn eq_rc(&self, other: &Rc<dyn EventClosure<Input, Msg>>) -> bool {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> willow/src/program.rs:24:47
[INFO] [stdout]    |
[INFO] [stdout] 24 |         UpdateFn: Fn(&Msg, &mut Model) -> Box<Cmd<Msg>> + 'static,
[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] 24 -         UpdateFn: Fn(&Msg, &mut Model) -> Box<Cmd<Msg>> + 'static,
[INFO] [stdout] 24 +         UpdateFn: Fn(&Msg, &mut Model) -> Box<dyn Cmd<Msg>> + 'static,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling willow v0.1.0 (/opt/rustwide/workdir/willow)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> willow/src/html.rs:161:31
[INFO] [stdout]     |
[INFO] [stdout] 161 |         let other = other as &Any;
[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] 161 -         let other = other as &Any;
[INFO] [stdout] 161 +         let other = other as &dyn Any;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> willow/src/render.rs:344:27
[INFO] [stdout]     |
[INFO] [stdout] 344 |                 }) as Box<Fn(_)>);
[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] 344 -                 }) as Box<Fn(_)>);
[INFO] [stdout] 344 +                 }) as Box<dyn Fn(_)>);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> examples/counter/src/app.rs:23:48
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn update(msg: &Msg, model: &mut Model) -> Box<Cmd<Msg>> {
[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] 23 - fn update(msg: &Msg, model: &mut Model) -> Box<Cmd<Msg>> {
[INFO] [stdout] 23 + fn update(msg: &Msg, model: &mut Model) -> Box<dyn Cmd<Msg>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> examples/todomvc/src/app.rs:61:48
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn update(msg: &Msg, model: &mut Model) -> Box<Cmd<Msg>> {
[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] 61 - fn update(msg: &Msg, model: &mut Model) -> Box<Cmd<Msg>> {
[INFO] [stdout] 61 + fn update(msg: &Msg, model: &mut Model) -> Box<dyn Cmd<Msg>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> willow/src/html.rs:44:25
[INFO] [stdout]    |
[INFO] [stdout] 44 |             .join("\n");;
[INFO] [stdout]    |                         ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> willow/src/program.rs:10:19
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub view: Box<Fn(&Model) -> Html<Msg>>,
[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] 10 -     pub view: Box<Fn(&Model) -> Html<Msg>>,
[INFO] [stdout] 10 +     pub view: Box<dyn Fn(&Model) -> Html<Msg>>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> willow/src/program.rs:11:21
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub update: Box<Fn(&Msg, &mut Model) -> Box<Cmd<Msg>>>,
[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] 11 -     pub update: Box<Fn(&Msg, &mut Model) -> Box<Cmd<Msg>>>,
[INFO] [stdout] 11 +     pub update: Box<dyn Fn(&Msg, &mut Model) -> Box<Cmd<Msg>>>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> willow/src/program.rs:11:49
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub update: Box<Fn(&Msg, &mut Model) -> Box<Cmd<Msg>>>,
[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] 11 -     pub update: Box<Fn(&Msg, &mut Model) -> Box<Cmd<Msg>>>,
[INFO] [stdout] 11 +     pub update: Box<Fn(&Msg, &mut Model) -> Box<dyn Cmd<Msg>>>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> willow/src/html.rs:69:75
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub struct JsClosure(pub Rc<RefCell<Option<wasm_bindgen::closure::Closure<Fn(web_sys::Event)>>>>);
[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] 69 - pub struct JsClosure(pub Rc<RefCell<Option<wasm_bindgen::closure::Closure<Fn(web_sys::Event)>>>>);
[INFO] [stdout] 69 + pub struct JsClosure(pub Rc<RefCell<Option<wasm_bindgen::closure::Closure<dyn Fn(web_sys::Event)>>>>);
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> willow/src/html.rs:172:46
[INFO] [stdout]     |
[INFO] [stdout] 172 | pub struct RcEventClosure<Input, Msg>(pub Rc<EventClosure<Input, Msg>>);
[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] 172 - pub struct RcEventClosure<Input, Msg>(pub Rc<EventClosure<Input, Msg>>);
[INFO] [stdout] 172 + pub struct RcEventClosure<Input, Msg>(pub Rc<dyn EventClosure<Input, Msg>>);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> willow/src/html.rs:138:32
[INFO] [stdout]     |
[INFO] [stdout] 138 |     fn eq_rc(&self, other: &Rc<EventClosure<Input, Msg>>) -> bool;
[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] 138 -     fn eq_rc(&self, other: &Rc<EventClosure<Input, Msg>>) -> bool;
[INFO] [stdout] 138 +     fn eq_rc(&self, other: &Rc<dyn EventClosure<Input, Msg>>) -> bool;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> willow/src/html.rs:122:74
[INFO] [stdout]     |
[INFO] [stdout] 122 |     pub fn set_js_closure(&self, closure: wasm_bindgen::closure::Closure<Fn(web_sys::Event)>) {
[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] 122 -     pub fn set_js_closure(&self, closure: wasm_bindgen::closure::Closure<Fn(web_sys::Event)>) {
[INFO] [stdout] 122 +     pub fn set_js_closure(&self, closure: wasm_bindgen::closure::Closure<dyn Fn(web_sys::Event)>) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> willow/src/html.rs:160:32
[INFO] [stdout]     |
[INFO] [stdout] 160 |     fn eq_rc(&self, other: &Rc<EventClosure<Input, Msg>>) -> bool {
[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] 160 -     fn eq_rc(&self, other: &Rc<EventClosure<Input, Msg>>) -> bool {
[INFO] [stdout] 160 +     fn eq_rc(&self, other: &Rc<dyn EventClosure<Input, Msg>>) -> bool {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> willow/src/program.rs:24:47
[INFO] [stdout]    |
[INFO] [stdout] 24 |         UpdateFn: Fn(&Msg, &mut Model) -> Box<Cmd<Msg>> + 'static,
[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] 24 -         UpdateFn: Fn(&Msg, &mut Model) -> Box<Cmd<Msg>> + 'static,
[INFO] [stdout] 24 +         UpdateFn: Fn(&Msg, &mut Model) -> Box<dyn Cmd<Msg>> + 'static,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> willow/src/html.rs:161:31
[INFO] [stdout]     |
[INFO] [stdout] 161 |         let other = other as &Any;
[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] 161 -         let other = other as &Any;
[INFO] [stdout] 161 +         let other = other as &dyn Any;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> willow/src/render.rs:344:27
[INFO] [stdout]     |
[INFO] [stdout] 344 |                 }) as Box<Fn(_)>);
[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] 344 -                 }) as Box<Fn(_)>);
[INFO] [stdout] 344 +                 }) as Box<dyn Fn(_)>);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling wasm-bindgen-futures v0.3.4
[INFO] [stderr]    Compiling wasm-bindgen-test v0.2.27
[INFO] [stderr]    Compiling example-counter v0.1.0 (/opt/rustwide/workdir/examples/counter)
[INFO] [stderr]    Compiling example-todomvc v0.1.0 (/opt/rustwide/workdir/examples/todomvc)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> examples/counter/src/app.rs:23:48
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn update(msg: &Msg, model: &mut Model) -> Box<Cmd<Msg>> {
[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] 23 - fn update(msg: &Msg, model: &mut Model) -> Box<Cmd<Msg>> {
[INFO] [stdout] 23 + fn update(msg: &Msg, model: &mut Model) -> Box<dyn Cmd<Msg>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> examples/todomvc/src/app.rs:61:48
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn update(msg: &Msg, model: &mut Model) -> Box<Cmd<Msg>> {
[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] 61 - fn update(msg: &Msg, model: &mut Model) -> Box<Cmd<Msg>> {
[INFO] [stdout] 61 + fn update(msg: &Msg, model: &mut Model) -> Box<dyn Cmd<Msg>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.96s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/example_counter-9db8cf91d899db95)
[INFO] [stderr]   Executable tests/web.rs (/opt/rustwide/target/debug/deps/web-189faa2c02de0151)
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/example_todomvc-8d4b2d3ce308b1e9)
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/willow-10e55e79c4a2f29f)
[INFO] running `Command { std: "docker" "inspect" "f63178b360dfda3253df44e8c08022a599ee5db4247139d819b6273e95b0be40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f63178b360dfda3253df44e8c08022a599ee5db4247139d819b6273e95b0be40", kill_on_drop: false }`
[INFO] [stdout] f63178b360dfda3253df44e8c08022a599ee5db4247139d819b6273e95b0be40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 37fce6cff55f2ef365fb235c70e9f42721014a8c8fa835d85c5cf652897f17b5
[INFO] running `Command { std: "docker" "start" "-a" "37fce6cff55f2ef365fb235c70e9f42721014a8c8fa835d85c5cf652897f17b5", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> willow/src/html.rs:44:25
[INFO] [stderr]    |
[INFO] [stderr] 44 |             .join("\n");;
[INFO] [stderr]    |                         ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> willow/src/program.rs:10:19
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub view: Box<Fn(&Model) -> Html<Msg>>,
[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] 10 -     pub view: Box<Fn(&Model) -> Html<Msg>>,
[INFO] [stderr] 10 +     pub view: Box<dyn Fn(&Model) -> Html<Msg>>,
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> willow/src/program.rs:11:21
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub update: Box<Fn(&Msg, &mut Model) -> Box<Cmd<Msg>>>,
[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] 11 -     pub update: Box<Fn(&Msg, &mut Model) -> Box<Cmd<Msg>>>,
[INFO] [stderr] 11 +     pub update: Box<dyn Fn(&Msg, &mut Model) -> Box<Cmd<Msg>>>,
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> willow/src/program.rs:11:49
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub update: Box<Fn(&Msg, &mut Model) -> Box<Cmd<Msg>>>,
[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] 11 -     pub update: Box<Fn(&Msg, &mut Model) -> Box<Cmd<Msg>>>,
[INFO] [stderr] 11 +     pub update: Box<Fn(&Msg, &mut Model) -> Box<dyn Cmd<Msg>>>,
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> willow/src/html.rs:69:75
[INFO] [stderr]    |
[INFO] [stderr] 69 | pub struct JsClosure(pub Rc<RefCell<Option<wasm_bindgen::closure::Closure<Fn(web_sys::Event)>>>>);
[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] 69 - pub struct JsClosure(pub Rc<RefCell<Option<wasm_bindgen::closure::Closure<Fn(web_sys::Event)>>>>);
[INFO] [stderr] 69 + pub struct JsClosure(pub Rc<RefCell<Option<wasm_bindgen::closure::Closure<dyn Fn(web_sys::Event)>>>>);
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> willow/src/html.rs:172:46
[INFO] [stderr]     |
[INFO] [stderr] 172 | pub struct RcEventClosure<Input, Msg>(pub Rc<EventClosure<Input, Msg>>);
[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] 172 - pub struct RcEventClosure<Input, Msg>(pub Rc<EventClosure<Input, Msg>>);
[INFO] [stderr] 172 + pub struct RcEventClosure<Input, Msg>(pub Rc<dyn EventClosure<Input, Msg>>);
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> willow/src/html.rs:138:32
[INFO] [stderr]     |
[INFO] [stderr] 138 |     fn eq_rc(&self, other: &Rc<EventClosure<Input, Msg>>) -> bool;
[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] 138 -     fn eq_rc(&self, other: &Rc<EventClosure<Input, Msg>>) -> bool;
[INFO] [stderr] 138 +     fn eq_rc(&self, other: &Rc<dyn EventClosure<Input, Msg>>) -> bool;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> willow/src/html.rs:122:74
[INFO] [stderr]     |
[INFO] [stderr] 122 |     pub fn set_js_closure(&self, closure: wasm_bindgen::closure::Closure<Fn(web_sys::Event)>) {
[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] 122 -     pub fn set_js_closure(&self, closure: wasm_bindgen::closure::Closure<Fn(web_sys::Event)>) {
[INFO] [stderr] 122 +     pub fn set_js_closure(&self, closure: wasm_bindgen::closure::Closure<dyn Fn(web_sys::Event)>) {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> willow/src/html.rs:160:32
[INFO] [stderr]     |
[INFO] [stderr] 160 |     fn eq_rc(&self, other: &Rc<EventClosure<Input, Msg>>) -> bool {
[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] 160 -     fn eq_rc(&self, other: &Rc<EventClosure<Input, Msg>>) -> bool {
[INFO] [stderr] 160 +     fn eq_rc(&self, other: &Rc<dyn EventClosure<Input, Msg>>) -> bool {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> willow/src/program.rs:24:47
[INFO] [stderr]    |
[INFO] [stderr] 24 |         UpdateFn: Fn(&Msg, &mut Model) -> Box<Cmd<Msg>> + 'static,
[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] 24 -         UpdateFn: Fn(&Msg, &mut Model) -> Box<Cmd<Msg>> + 'static,
[INFO] [stderr] 24 +         UpdateFn: Fn(&Msg, &mut Model) -> Box<dyn Cmd<Msg>> + 'static,
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> willow/src/html.rs:161:31
[INFO] [stderr]     |
[INFO] [stderr] 161 |         let other = other as &Any;
[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] 161 -         let other = other as &Any;
[INFO] [stderr] 161 +         let other = other as &dyn Any;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> willow/src/render.rs:344:27
[INFO] [stderr]     |
[INFO] [stderr] 344 |                 }) as Box<Fn(_)>);
[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] 344 -                 }) as Box<Fn(_)>);
[INFO] [stderr] 344 +                 }) as Box<dyn Fn(_)>);
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: `willow` (lib) generated 12 warnings
[INFO] [stderr] warning: `willow` (lib test) generated 12 warnings (12 duplicates)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> examples/counter/src/app.rs:23:48
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn update(msg: &Msg, model: &mut Model) -> Box<Cmd<Msg>> {
[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] 23 - fn update(msg: &Msg, model: &mut Model) -> Box<Cmd<Msg>> {
[INFO] [stderr] 23 + fn update(msg: &Msg, model: &mut Model) -> Box<dyn Cmd<Msg>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> examples/todomvc/src/app.rs:61:48
[INFO] [stderr]    |
[INFO] [stderr] 61 | fn update(msg: &Msg, model: &mut Model) -> Box<Cmd<Msg>> {
[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] 61 - fn update(msg: &Msg, model: &mut Model) -> Box<Cmd<Msg>> {
[INFO] [stderr] 61 + fn update(msg: &Msg, model: &mut Model) -> Box<dyn Cmd<Msg>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: `example-counter` (lib) generated 1 warning
[INFO] [stderr] warning: `example-todomvc` (lib) generated 1 warning
[INFO] [stderr] warning: `example-todomvc` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `example-counter` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/example_counter-9db8cf91d899db95)
[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]      Running tests/web.rs (/opt/rustwide/target/debug/deps/web-189faa2c02de0151)
[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]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/example_todomvc-8d4b2d3ce308b1e9)
[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]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/willow-10e55e79c4a2f29f)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests example-counter
[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 example-todomvc
[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 willow
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> /opt/rustwide/workdir/willow/src/html.rs:44:25
[INFO] [stderr]    |
[INFO] [stderr] 44 |             .join("\n");;
[INFO] [stderr]    |                         ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[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" "37fce6cff55f2ef365fb235c70e9f42721014a8c8fa835d85c5cf652897f17b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37fce6cff55f2ef365fb235c70e9f42721014a8c8fa835d85c5cf652897f17b5", kill_on_drop: false }`
[INFO] [stdout] 37fce6cff55f2ef365fb235c70e9f42721014a8c8fa835d85c5cf652897f17b5