[INFO] fetching crate rxrs 0.2.0-beta3...
[INFO] testing rxrs-0.2.0-beta3 against 1.60.0 for beta-1.61-1
[INFO] extracting crate rxrs 0.2.0-beta3 into /workspace/builds/worker-100/source
[INFO] validating manifest of crates.io crate rxrs 0.2.0-beta3 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rxrs 0.2.0-beta3
[INFO] finished tweaking crates.io crate rxrs 0.2.0-beta3
[INFO] tweaked toml for crates.io crate rxrs 0.2.0-beta3 written to /workspace/builds/worker-100/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40490fff216bcd758dee0ede0a1e78a456f58d7f48e78bfacb5fb521eabf856b
[INFO] running `Command { std: "docker" "start" "-a" "40490fff216bcd758dee0ede0a1e78a456f58d7f48e78bfacb5fb521eabf856b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40490fff216bcd758dee0ede0a1e78a456f58d7f48e78bfacb5fb521eabf856b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40490fff216bcd758dee0ede0a1e78a456f58d7f48e78bfacb5fb521eabf856b", kill_on_drop: false }`
[INFO] [stdout] 40490fff216bcd758dee0ede0a1e78a456f58d7f48e78bfacb5fb521eabf856b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f235df2b8ca826df743f015e4ad09dc7fa1c43da2e880ad58c33c6111da85d6
[INFO] running `Command { std: "docker" "start" "-a" "9f235df2b8ca826df743f015e4ad09dc7fa1c43da2e880ad58c33c6111da85d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling rxrs v0.2.0-beta3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:58
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(fn_traits, unboxed_closures, integer_atomics, optin_builtin_traits, fnbox, test, cell_update, box_syntax, impl_trait_in_bindin...
[INFO] [stdout]   |                                                          ^^^^^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: renamed to `auto_traits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:118
[INFO] [stdout]   |
[INFO] [stdout] 1 | ...its, fnbox, test, cell_update, box_syntax, impl_trait_in_bindings)]
[INFO] [stdout]   |                                               ^^^^^^^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: the implementation was not maintainable, the feature may get reintroduced once the current refactorings are done
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::boxed::FnBox`
[INFO] [stdout]  --> src/scheduler/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::boxed::FnBox;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ no `FnBox` in `boxed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(fn_traits, unboxed_closures, integer_atomics, optin_builtin_traits, fnbox, test, cell_update, box_syntax, impl_trait_in_bindings)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: auto traits are experimental and possibly buggy
[INFO] [stdout]   --> src/sync/yesno.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub unsafe auto trait No {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #13231 <https://github.com/rust-lang/rust/issues/13231> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now
[INFO] [stdout]   --> src/sync/yesno.rs:25:6
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl !No for YES {}
[INFO] [stdout]    |      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]  --> src/op/filter.rs:9:30
[INFO] [stdout]   |
[INFO] [stdout] 9 |     PhantomData: PhantomData<(SS)>
[INFO] [stdout]   |                              ^  ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout] 9 -     PhantomData: PhantomData<(SS)>
[INFO] [stdout] 9 +     PhantomData: PhantomData<SS>
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/op/take.rs:10:30
[INFO] [stdout]    |
[INFO] [stdout] 10 |     PhantomData: PhantomData<(SS)>
[INFO] [stdout]    |                              ^  ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 10 -     PhantomData: PhantomData<(SS)>
[INFO] [stdout] 10 +     PhantomData: PhantomData<SS>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]  --> src/op/skip.rs:9:30
[INFO] [stdout]   |
[INFO] [stdout] 9 |     PhantomData: PhantomData<(SS)>
[INFO] [stdout]   |                              ^  ^
[INFO] [stdout]   |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout] 9 -     PhantomData: PhantomData<(SS)>
[INFO] [stdout] 9 +     PhantomData: PhantomData<SS>
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]  --> src/unsub.rs:3:28
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::{Arc, Once, ONCE_INIT};
[INFO] [stdout]   |                            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/unsub.rs:108:33
[INFO] [stdout]     |
[INFO] [stdout] 108 |             static INIT: Once = ONCE_INIT;
[INFO] [stdout]     |                                 ^^^^^^^^^ help: replace the use of the deprecated constant: `Once::new()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/sync/re_spin_lock.rs:91:61
[INFO] [stdout]    |
[INFO] [stdout] 91 |         thread_local!(static KEY: u8 = unsafe { ::std::mem::uninitialized() });
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/observable.rs:13:36
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub(crate) src: std::sync::Arc<Observable<'o, SS, By> + 's>,
[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] 13 -     pub(crate) src: std::sync::Arc<Observable<'o, SS, By> + 's>,
[INFO] [stdout] 13 +     pub(crate) src: std::sync::Arc<dyn Observable<'o, SS, By> + 's>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/subject/subject.rs:9:19
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Next(Vec<(Arc<ActNext<'o, SS, Ref<V>>>, UnsafeCell<Option<Box<ActEcBox<'o, SS>>>>, Unsub<'o, SS>)>),
[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] 9 -     Next(Vec<(Arc<ActNext<'o, SS, Ref<V>>>, UnsafeCell<Option<Box<ActEcBox<'o, SS>>>>, Unsub<'o, SS>)>),
[INFO] [stdout] 9 +     Next(Vec<(Arc<dyn ActNext<'o, SS, Ref<V>>>, UnsafeCell<Option<Box<ActEcBox<'o, SS>>>>, Unsub<'o, SS>)>),
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/subject/subject.rs:9:67
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Next(Vec<(Arc<ActNext<'o, SS, Ref<V>>>, UnsafeCell<Option<Box<ActEcBox<'o, SS>>>>, Unsub<'o, SS>)>),
[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] 9 -     Next(Vec<(Arc<ActNext<'o, SS, Ref<V>>>, UnsafeCell<Option<Box<ActEcBox<'o, SS>>>>, Unsub<'o, SS>)>),
[INFO] [stdout] 9 +     Next(Vec<(Arc<ActNext<'o, SS, Ref<V>>>, UnsafeCell<Option<Box<dyn ActEcBox<'o, SS>>>>, Unsub<'o, SS>)>),
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/unsub.rs:10:33
[INFO] [stdout]    |
[INFO] [stdout] 10 |     cb:   UnsafeCell<Option<Box<ActBox<SS, ()>+'a>>>,
[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] 10 -     cb:   UnsafeCell<Option<Box<ActBox<SS, ()>+'a>>>,
[INFO] [stdout] 10 +     cb:   UnsafeCell<Option<Box<dyn ActBox<SS, ()>+'a>>>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/scheduler/event_loop_scheduler.rs:23:14
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fac: Arc<ThreadFactory+Send+Sync+'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] 23 -     fac: Arc<ThreadFactory+Send+Sync+'static>
[INFO] [stdout] 23 +     fac: Arc<dyn ThreadFactory+Send+Sync+'static>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/scheduler/event_loop_scheduler.rs:34:21
[INFO] [stdout]    |
[INFO] [stdout] 34 | type ArcActFn = Arc<Fn()+Send+Sync+'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] 34 - type ArcActFn = Arc<Fn()+Send+Sync+'static>;
[INFO] [stdout] 34 + type ArcActFn = Arc<dyn Fn()+Send+Sync+'static>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/scheduler/current_thread_scheduler.rs:11:19
[INFO] [stdout]    |
[INFO] [stdout] 11 | type RcActFn = Rc<Fn()+'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] 11 - type RcActFn = Rc<Fn()+'static>;
[INFO] [stdout] 11 + type RcActFn = Rc<dyn Fn()+'static>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/error.rs:9:14
[INFO] [stdout]   |
[INFO] [stdout] 9 |     err: Arc<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] 9 -     err: Arc<Error>,
[INFO] [stdout] 9 +     err: Arc<dyn Error>,
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:42:36
[INFO] [stdout]    |
[INFO] [stdout] 42 |         struct StrError(Option<Arc<Error+'static>>, String);
[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] 42 -         struct StrError(Option<Arc<Error+'static>>, String);
[INFO] [stdout] 42 +         struct StrError(Option<Arc<dyn Error+'static>>, String);
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/observable.rs:6:39
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, err_or_comp: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>;
[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] 6 -     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, err_or_comp: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>;
[INFO] [stdout] 6 +     fn subscribe_dyn(&self, next: Box<dyn ActNext<'o, SS, By>>, err_or_comp: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>;
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/observable.rs:6:78
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, err_or_comp: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>;
[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] 6 -     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, err_or_comp: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>;
[INFO] [stdout] 6 +     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, err_or_comp: Box<dyn ActEcBox<'o, SS>>) -> Unsub<'o, SS>;
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/observable.rs:27:41
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn from_arc(src: std::sync::Arc<Observable<'o, SS, By>+'s>) -> Self { DynObservable{ src }}
[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] 27 -     pub fn from_arc(src: std::sync::Arc<Observable<'o, SS, By>+'s>) -> Self { DynObservable{ src }}
[INFO] [stdout] 27 +     pub fn from_arc(src: std::sync::Arc<dyn Observable<'o, SS, By>+'s>) -> Self { DynObservable{ src }}
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/observable.rs:28:30
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn from_box(src: Box<Observable<'o, SS, By>+'s>) -> Self { DynObservable{ src: src.into() }}
[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] 28 -     pub fn from_box(src: Box<Observable<'o, SS, By>+'s>) -> Self { DynObservable{ src: src.into() }}
[INFO] [stdout] 28 +     pub fn from_box(src: Box<dyn Observable<'o, SS, By>+'s>) -> Self { DynObservable{ src: src.into() }}
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/observable.rs:30:45
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn as_impl(&self) -> std::sync::Arc<Observable<'o, SS, By>+'s> { self.src.clone() }
[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] 30 -     pub fn as_impl(&self) -> std::sync::Arc<Observable<'o, SS, By>+'s> { self.src.clone() }
[INFO] [stdout] 30 +     pub fn as_impl(&self) -> std::sync::Arc<dyn Observable<'o, SS, By>+'s> { self.src.clone() }
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/observable.rs:35:43
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, err_or_comp: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[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] 35 -     pub fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, err_or_comp: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout] 35 +     pub fn subscribe_dyn(&self, next: Box<dyn ActNext<'o, SS, By>>, err_or_comp: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/observable.rs:35:82
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, err_or_comp: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[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] 35 -     pub fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, err_or_comp: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout] 35 +     pub fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, err_or_comp: Box<dyn ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/observable.rs:50:39
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[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] 50 -     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout] 50 +     fn subscribe_dyn(&self, next: Box<dyn ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rxrs` due to 7 previous errors; 37 warnings emitted
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/observable.rs:50:69
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[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] 50 -     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout] 50 +     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<dyn ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/observable.rs:63:39
[INFO] [stdout]    |
[INFO] [stdout] 63 |     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[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] 63 -     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout] 63 +     fn subscribe_dyn(&self, next: Box<dyn ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/observable.rs:63:69
[INFO] [stdout]    |
[INFO] [stdout] 63 |     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[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] 63 -     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout] 63 +     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<dyn ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/observable.rs:80:39
[INFO] [stdout]    |
[INFO] [stdout] 80 |     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[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] 80 -     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout] 80 +     fn subscribe_dyn(&self, next: Box<dyn ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/observable.rs:80:69
[INFO] [stdout]    |
[INFO] [stdout] 80 |     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[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] 80 -     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout] 80 +     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<dyn ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/observable.rs:96:39
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[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] 96 -     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout] 96 +     fn subscribe_dyn(&self, next: Box<dyn ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/observable.rs:96:69
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[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] 96 -     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout] 96 +     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<dyn ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/observable.rs:109:39
[INFO] [stdout]     |
[INFO] [stdout] 109 |     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[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] 109 -     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout] 109 +     fn subscribe_dyn(&self, next: Box<dyn ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/observable.rs:109:69
[INFO] [stdout]     |
[INFO] [stdout] 109 |     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[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] 109 -     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout] 109 +     fn subscribe_dyn(&self, next: Box<ActNext<'o, SS, By>>, ec: Box<dyn ActEcBox<'o, SS>>) -> Unsub<'o, SS>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/observer.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 | for Box<ActNext<'o, SS, BY>>
[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] 90 - for Box<ActNext<'o, SS, BY>>
[INFO] [stdout] 90 + for Box<dyn ActNext<'o, SS, BY>>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/observer.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 | for Box<ActEcBox<'o, SS>>
[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] 98 - for Box<ActEcBox<'o, SS>>
[INFO] [stdout] 98 + for Box<dyn ActEcBox<'o, SS>>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:39:38
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn simple(source: Option<Arc<Error+'static>>, msg: impl Into<String>) -> Self
[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] 39 -     pub fn simple(source: Option<Arc<Error+'static>>, msg: impl Into<String>) -> Self
[INFO] [stdout] 39 +     pub fn simple(source: Option<Arc<dyn Error+'static>>, msg: impl Into<String>) -> Self
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:62:41
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn handle(mut self, f: impl Fn(&Error) -> Option<RxError>) -> Option<RxError>
[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] 62 -     pub fn handle(mut self, f: impl Fn(&Error) -> Option<RxError>) -> Option<RxError>
[INFO] [stdout] 62 +     pub fn handle(mut self, f: impl Fn(&dyn Error) -> Option<RxError>) -> Option<RxError>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/scheduler/mod.rs:17:35
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn start_dyn(&self, main: Box<FnBox()+Send+Sync+'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] 17 -     fn start_dyn(&self, main: Box<FnBox()+Send+Sync+'static>);
[INFO] [stdout] 17 +     fn start_dyn(&self, main: Box<dyn FnBox()+Send+Sync+'static>);
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors; 37 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0554, E0557, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9f235df2b8ca826df743f015e4ad09dc7fa1c43da2e880ad58c33c6111da85d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f235df2b8ca826df743f015e4ad09dc7fa1c43da2e880ad58c33c6111da85d6", kill_on_drop: false }`
[INFO] [stdout] 9f235df2b8ca826df743f015e4ad09dc7fa1c43da2e880ad58c33c6111da85d6