[INFO] fetching crate kick 0.1.2...
[INFO] testing kick-0.1.2 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate kick 0.1.2 into /workspace/builds/worker-30/source
[INFO] validating manifest of crates.io crate kick 0.1.2 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kick 0.1.2
[INFO] finished tweaking crates.io crate kick 0.1.2
[INFO] tweaked toml for crates.io crate kick 0.1.2 written to /workspace/builds/worker-30/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ebd1bd32d028f1cb86e84582b11bb49e908a1d8328538bb67e08d2ea12c074db
[INFO] running `Command { std: "docker" "start" "-a" "ebd1bd32d028f1cb86e84582b11bb49e908a1d8328538bb67e08d2ea12c074db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebd1bd32d028f1cb86e84582b11bb49e908a1d8328538bb67e08d2ea12c074db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebd1bd32d028f1cb86e84582b11bb49e908a1d8328538bb67e08d2ea12c074db", kill_on_drop: false }`
[INFO] [stdout] ebd1bd32d028f1cb86e84582b11bb49e908a1d8328538bb67e08d2ea12c074db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f2c0c01a01ece66960a68db20bde806b997e52157787fd32f01db7a46c3a93a3
[INFO] running `Command { std: "docker" "start" "-a" "f2c0c01a01ece66960a68db20bde806b997e52157787fd32f01db7a46c3a93a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling kick v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/stream/slot.rs:54:44
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn push(&mut self, t: T) -> Option<(Box<MomentBox<'b, (), Tr>>)> {
[INFO] [stdout]    |                                            ^                          ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 54 -     pub fn push(&mut self, t: T) -> Option<(Box<MomentBox<'b, (), Tr>>)> {
[INFO] [stdout] 54 +     pub fn push(&mut self, t: T) -> Option<Box<MomentBox<'b, (), Tr>>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/moment.rs:20:55
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub type MomentBox<'a, T, Tr: Transaction<'a> + 'a> = StateBox<Tr, Output = T> + 'a;
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 20 - pub type MomentBox<'a, T, Tr: Transaction<'a> + 'a> = StateBox<Tr, Output = T> + 'a;
[INFO] [stdout] 20 + pub type MomentBox<'a, T, Tr: Transaction<'a> + 'a> = dyn StateBox<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/stream/slot.rs:13:64
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 13 - pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout] 13 + pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = dyn Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/stream/slot.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     FnMut(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 15 -     FnMut(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout] 15 +     dyn FnMut(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/moment.rs:17:56
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub type MomentOnce<'a, T, Tr: Transaction<'a> + 'a> = StateOnce<Tr, Output = T> + 'a;
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 17 - pub type MomentOnce<'a, T, Tr: Transaction<'a> + 'a> = StateOnce<Tr, Output = T> + 'a;
[INFO] [stdout] 17 + pub type MomentOnce<'a, T, Tr: Transaction<'a> + 'a> = dyn StateOnce<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/moment.rs:23:55
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub type MomentMut<'a, T, Tr: Transaction<'a> + 'a> = StateMut<Tr, Output = T> + 'a;
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 - pub type MomentMut<'a, T, Tr: Transaction<'a> + 'a> = StateMut<Tr, Output = T> + 'a;
[INFO] [stdout] 23 + pub type MomentMut<'a, T, Tr: Transaction<'a> + 'a> = dyn StateMut<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/moment.rs:26:52
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub type Moment<'a, T, Tr: Transaction<'a> + 'a> = State<Tr, Output = T> + 'a;
[INFO] [stdout]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 - pub type Moment<'a, T, Tr: Transaction<'a> + 'a> = State<Tr, Output = T> + 'a;
[INFO] [stdout] 26 + pub type Moment<'a, T, Tr: Transaction<'a> + 'a> = dyn State<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/state/refs.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn run_once(mut self, state: &mut S) -> Self::Output {
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/stream/slot.rs:61:23
[INFO] [stdout]    |
[INFO] [stdout] 61 |             Slot::Mut(mut f) => f(t).map(move |r| (Some(Slot::Mut(f)), r)),
[INFO] [stdout]    |                       ----^
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/moment.rs:17:32
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub type MomentOnce<'a, T, Tr: Transaction<'a> + 'a> = StateOnce<Tr, Output = T> + 'a;
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^   ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 17 - pub type MomentOnce<'a, T, Tr: Transaction<'a> + 'a> = StateOnce<Tr, Output = T> + 'a;
[INFO] [stdout] 17 + pub type MomentOnce<'a, T, Tr> = StateOnce<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/moment.rs:20:31
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub type MomentBox<'a, T, Tr: Transaction<'a> + 'a> = StateBox<Tr, Output = T> + 'a;
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^   ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 20 - pub type MomentBox<'a, T, Tr: Transaction<'a> + 'a> = StateBox<Tr, Output = T> + 'a;
[INFO] [stdout] 20 + pub type MomentBox<'a, T, Tr> = StateBox<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/moment.rs:23:31
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub type MomentMut<'a, T, Tr: Transaction<'a> + 'a> = StateMut<Tr, Output = T> + 'a;
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^   ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 23 - pub type MomentMut<'a, T, Tr: Transaction<'a> + 'a> = StateMut<Tr, Output = T> + 'a;
[INFO] [stdout] 23 + pub type MomentMut<'a, T, Tr> = StateMut<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/moment.rs:26:28
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub type Moment<'a, T, Tr: Transaction<'a> + 'a> = State<Tr, Output = T> + 'a;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^   ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 26 - pub type Moment<'a, T, Tr: Transaction<'a> + 'a> = State<Tr, Output = T> + 'a;
[INFO] [stdout] 26 + pub type Moment<'a, T, Tr> = State<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/cell/mod.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |         ::std::mem::replace(&mut *self.0.borrow_mut(), value);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/stream/slot.rs:13:25
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    |                         ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 13 - pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout] 13 + pub type SlotFn<'a, 'b, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/stream/slot.rs:13:32
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    |                                ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 13 - pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout] 13 + pub type SlotFn<'a, 'b: 'a, T, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/stream/slot.rs:13:40
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^   ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 13 - pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout] 13 + pub type SlotFn<'a, 'b: 'a, T: 'a, Tr> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/stream/slot.rs:14:28
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stdout]    |                            ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 14 - pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stdout] 14 + pub type SlotFnMut<'a, 'b, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/stream/slot.rs:14:35
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stdout]    |                                   ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 14 - pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stdout] 14 + pub type SlotFnMut<'a, 'b: 'a, T, Tr: Transaction<'b> + 'b> =
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/stream/slot.rs:14:43
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^   ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 14 - pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stdout] 14 + pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr> =
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/stream/slot.rs:69:17
[INFO] [stdout]    |
[INFO] [stdout] 69 |                 ::std::mem::replace(self, slot);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.21s
[INFO] running `Command { std: "docker" "inspect" "f2c0c01a01ece66960a68db20bde806b997e52157787fd32f01db7a46c3a93a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2c0c01a01ece66960a68db20bde806b997e52157787fd32f01db7a46c3a93a3", kill_on_drop: false }`
[INFO] [stdout] f2c0c01a01ece66960a68db20bde806b997e52157787fd32f01db7a46c3a93a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 71c400353ecab5e5b992dcbfff950e71c327a10058b813621590cb6babddaa7a
[INFO] running `Command { std: "docker" "start" "-a" "71c400353ecab5e5b992dcbfff950e71c327a10058b813621590cb6babddaa7a", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/stream/slot.rs:54:44
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn push(&mut self, t: T) -> Option<(Box<MomentBox<'b, (), Tr>>)> {
[INFO] [stdout]    |                                            ^                          ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 54 -     pub fn push(&mut self, t: T) -> Option<(Box<MomentBox<'b, (), Tr>>)> {
[INFO] [stdout] 54 +     pub fn push(&mut self, t: T) -> Option<Box<MomentBox<'b, (), Tr>>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/moment.rs:20:55
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub type MomentBox<'a, T, Tr: Transaction<'a> + 'a> = StateBox<Tr, Output = T> + 'a;
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 20 - pub type MomentBox<'a, T, Tr: Transaction<'a> + 'a> = StateBox<Tr, Output = T> + 'a;
[INFO] [stdout] 20 + pub type MomentBox<'a, T, Tr: Transaction<'a> + 'a> = dyn StateBox<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/stream/slot.rs:13:64
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 13 - pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout] 13 + pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = dyn Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling kick v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/stream/slot.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     FnMut(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 15 -     FnMut(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout] 15 +     dyn FnMut(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/moment.rs:17:56
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub type MomentOnce<'a, T, Tr: Transaction<'a> + 'a> = StateOnce<Tr, Output = T> + 'a;
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 17 - pub type MomentOnce<'a, T, Tr: Transaction<'a> + 'a> = StateOnce<Tr, Output = T> + 'a;
[INFO] [stdout] 17 + pub type MomentOnce<'a, T, Tr: Transaction<'a> + 'a> = dyn StateOnce<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/moment.rs:23:55
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub type MomentMut<'a, T, Tr: Transaction<'a> + 'a> = StateMut<Tr, Output = T> + 'a;
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 - pub type MomentMut<'a, T, Tr: Transaction<'a> + 'a> = StateMut<Tr, Output = T> + 'a;
[INFO] [stdout] 23 + pub type MomentMut<'a, T, Tr: Transaction<'a> + 'a> = dyn StateMut<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/moment.rs:26:52
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub type Moment<'a, T, Tr: Transaction<'a> + 'a> = State<Tr, Output = T> + 'a;
[INFO] [stdout]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 - pub type Moment<'a, T, Tr: Transaction<'a> + 'a> = State<Tr, Output = T> + 'a;
[INFO] [stdout] 26 + pub type Moment<'a, T, Tr: Transaction<'a> + 'a> = dyn State<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/state/refs.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn run_once(mut self, state: &mut S) -> Self::Output {
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/stream/slot.rs:61:23
[INFO] [stdout]    |
[INFO] [stdout] 61 |             Slot::Mut(mut f) => f(t).map(move |r| (Some(Slot::Mut(f)), r)),
[INFO] [stdout]    |                       ----^
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/moment.rs:17:32
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub type MomentOnce<'a, T, Tr: Transaction<'a> + 'a> = StateOnce<Tr, Output = T> + 'a;
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^   ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 17 - pub type MomentOnce<'a, T, Tr: Transaction<'a> + 'a> = StateOnce<Tr, Output = T> + 'a;
[INFO] [stdout] 17 + pub type MomentOnce<'a, T, Tr> = StateOnce<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/moment.rs:20:31
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub type MomentBox<'a, T, Tr: Transaction<'a> + 'a> = StateBox<Tr, Output = T> + 'a;
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^   ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 20 - pub type MomentBox<'a, T, Tr: Transaction<'a> + 'a> = StateBox<Tr, Output = T> + 'a;
[INFO] [stdout] 20 + pub type MomentBox<'a, T, Tr> = StateBox<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/moment.rs:23:31
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub type MomentMut<'a, T, Tr: Transaction<'a> + 'a> = StateMut<Tr, Output = T> + 'a;
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^   ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 23 - pub type MomentMut<'a, T, Tr: Transaction<'a> + 'a> = StateMut<Tr, Output = T> + 'a;
[INFO] [stdout] 23 + pub type MomentMut<'a, T, Tr> = StateMut<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/moment.rs:26:28
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub type Moment<'a, T, Tr: Transaction<'a> + 'a> = State<Tr, Output = T> + 'a;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^   ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 26 - pub type Moment<'a, T, Tr: Transaction<'a> + 'a> = State<Tr, Output = T> + 'a;
[INFO] [stdout] 26 + pub type Moment<'a, T, Tr> = State<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/cell/mod.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |         ::std::mem::replace(&mut *self.0.borrow_mut(), value);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/stream/slot.rs:13:25
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    |                         ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 13 - pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout] 13 + pub type SlotFn<'a, 'b, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/stream/slot.rs:13:32
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    |                                ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 13 - pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout] 13 + pub type SlotFn<'a, 'b: 'a, T, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/stream/slot.rs:13:40
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^   ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 13 - pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout] 13 + pub type SlotFn<'a, 'b: 'a, T: 'a, Tr> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/stream/slot.rs:14:28
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stdout]    |                            ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 14 - pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stdout] 14 + pub type SlotFnMut<'a, 'b, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/stream/slot.rs:14:35
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stdout]    |                                   ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 14 - pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stdout] 14 + pub type SlotFnMut<'a, 'b: 'a, T, Tr: Transaction<'b> + 'b> =
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/stream/slot.rs:14:43
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^   ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 14 - pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stdout] 14 + pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr> =
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/stream/slot.rs:69:17
[INFO] [stdout]    |
[INFO] [stdout] 69 |                 ::std::mem::replace(self, slot);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/tests/mod.rs:108:19
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn test_cell_1() {;
[INFO] [stdout]     |                   ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/stream/slot.rs:54:44
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn push(&mut self, t: T) -> Option<(Box<MomentBox<'b, (), Tr>>)> {
[INFO] [stdout]    |                                            ^                          ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 54 -     pub fn push(&mut self, t: T) -> Option<(Box<MomentBox<'b, (), Tr>>)> {
[INFO] [stdout] 54 +     pub fn push(&mut self, t: T) -> Option<Box<MomentBox<'b, (), Tr>>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/moment.rs:20:55
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub type MomentBox<'a, T, Tr: Transaction<'a> + 'a> = StateBox<Tr, Output = T> + 'a;
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 20 - pub type MomentBox<'a, T, Tr: Transaction<'a> + 'a> = StateBox<Tr, Output = T> + 'a;
[INFO] [stdout] 20 + pub type MomentBox<'a, T, Tr: Transaction<'a> + 'a> = dyn StateBox<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/stream/slot.rs:13:64
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 13 - pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout] 13 + pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = dyn Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/stream/slot.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     FnMut(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 15 -     FnMut(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout] 15 +     dyn FnMut(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/moment.rs:17:56
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub type MomentOnce<'a, T, Tr: Transaction<'a> + 'a> = StateOnce<Tr, Output = T> + 'a;
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 17 - pub type MomentOnce<'a, T, Tr: Transaction<'a> + 'a> = StateOnce<Tr, Output = T> + 'a;
[INFO] [stdout] 17 + pub type MomentOnce<'a, T, Tr: Transaction<'a> + 'a> = dyn StateOnce<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/moment.rs:23:55
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub type MomentMut<'a, T, Tr: Transaction<'a> + 'a> = StateMut<Tr, Output = T> + 'a;
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 - pub type MomentMut<'a, T, Tr: Transaction<'a> + 'a> = StateMut<Tr, Output = T> + 'a;
[INFO] [stdout] 23 + pub type MomentMut<'a, T, Tr: Transaction<'a> + 'a> = dyn StateMut<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/moment.rs:26:52
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub type Moment<'a, T, Tr: Transaction<'a> + 'a> = State<Tr, Output = T> + 'a;
[INFO] [stdout]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 - pub type Moment<'a, T, Tr: Transaction<'a> + 'a> = State<Tr, Output = T> + 'a;
[INFO] [stdout] 26 + pub type Moment<'a, T, Tr: Transaction<'a> + 'a> = dyn State<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/tests/mod.rs:56:18
[INFO] [stdout]    |
[INFO] [stdout] 56 |         st(move |s: &mut _| x * 2) => x;
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/tests/mod.rs:57:18
[INFO] [stdout]    |
[INFO] [stdout] 57 |         st(move |s: &mut _| x + 6).map(|x| x * 3).map(|x| st(move |s: &mut _| x / 2)).join()
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/tests/mod.rs:57:68
[INFO] [stdout]    |
[INFO] [stdout] 57 |         st(move |s: &mut _| x + 6).map(|x| x * 3).map(|x| st(move |s: &mut _| x / 2)).join()
[INFO] [stdout]    |                                                                    ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/tests/mod.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |         st(|s: &mut _| 1)
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> src/tests/mod.rs:184:33
[INFO] [stdout]     |
[INFO] [stdout] 184 |     let m = m.bind(|x| st(move |s: &mut _| x + 6)); // (10)
[INFO] [stdout]     |                                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> src/tests/mod.rs:186:32
[INFO] [stdout]     |
[INFO] [stdout] 186 |     let m = m.map(|x| st(move |s: &mut _| x / 2)); // ((15))
[INFO] [stdout]     |                                ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/state/refs.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn run_once(mut self, state: &mut S) -> Self::Output {
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/stream/slot.rs:61:23
[INFO] [stdout]    |
[INFO] [stdout] 61 |             Slot::Mut(mut f) => f(t).map(move |r| (Some(Slot::Mut(f)), r)),
[INFO] [stdout]    |                       ----^
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_macro_1`
[INFO] [stdout]   --> src/tests/mod.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn test_macro_1() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/moment.rs:17:32
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub type MomentOnce<'a, T, Tr: Transaction<'a> + 'a> = StateOnce<Tr, Output = T> + 'a;
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^   ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 17 - pub type MomentOnce<'a, T, Tr: Transaction<'a> + 'a> = StateOnce<Tr, Output = T> + 'a;
[INFO] [stdout] 17 + pub type MomentOnce<'a, T, Tr> = StateOnce<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/moment.rs:20:31
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub type MomentBox<'a, T, Tr: Transaction<'a> + 'a> = StateBox<Tr, Output = T> + 'a;
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^   ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 20 - pub type MomentBox<'a, T, Tr: Transaction<'a> + 'a> = StateBox<Tr, Output = T> + 'a;
[INFO] [stdout] 20 + pub type MomentBox<'a, T, Tr> = StateBox<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/moment.rs:23:31
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub type MomentMut<'a, T, Tr: Transaction<'a> + 'a> = StateMut<Tr, Output = T> + 'a;
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^   ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 23 - pub type MomentMut<'a, T, Tr: Transaction<'a> + 'a> = StateMut<Tr, Output = T> + 'a;
[INFO] [stdout] 23 + pub type MomentMut<'a, T, Tr> = StateMut<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/moment.rs:26:28
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub type Moment<'a, T, Tr: Transaction<'a> + 'a> = State<Tr, Output = T> + 'a;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^   ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 26 - pub type Moment<'a, T, Tr: Transaction<'a> + 'a> = State<Tr, Output = T> + 'a;
[INFO] [stdout] 26 + pub type Moment<'a, T, Tr> = State<Tr, Output = T> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/cell/mod.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |         ::std::mem::replace(&mut *self.0.borrow_mut(), value);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/stream/slot.rs:13:25
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    |                         ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 13 - pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout] 13 + pub type SlotFn<'a, 'b, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/stream/slot.rs:13:32
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    |                                ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 13 - pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout] 13 + pub type SlotFn<'a, 'b: 'a, T, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/stream/slot.rs:13:40
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^   ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 13 - pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout] 13 + pub type SlotFn<'a, 'b: 'a, T: 'a, Tr> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/stream/slot.rs:14:28
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stdout]    |                            ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 14 - pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stdout] 14 + pub type SlotFnMut<'a, 'b, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/stream/slot.rs:14:35
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stdout]    |                                   ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 14 - pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stdout] 14 + pub type SlotFnMut<'a, 'b: 'a, T, Tr: Transaction<'b> + 'b> =
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/stream/slot.rs:14:43
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^   ^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 14 - pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stdout] 14 + pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr> =
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/stream/slot.rs:69:17
[INFO] [stdout]    |
[INFO] [stdout] 69 |                 ::std::mem::replace(self, slot);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.86s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/kick-74b341bcc743425b)
[INFO] running `Command { std: "docker" "inspect" "71c400353ecab5e5b992dcbfff950e71c327a10058b813621590cb6babddaa7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71c400353ecab5e5b992dcbfff950e71c327a10058b813621590cb6babddaa7a", kill_on_drop: false }`
[INFO] [stdout] 71c400353ecab5e5b992dcbfff950e71c327a10058b813621590cb6babddaa7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 22d12c49ab48d3f038476f5cb3c0cf498cc953a0e4172a98dcb21cc37f4d9ee8
[INFO] running `Command { std: "docker" "start" "-a" "22d12c49ab48d3f038476f5cb3c0cf498cc953a0e4172a98dcb21cc37f4d9ee8", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stdout] 
[INFO] [stderr]   --> src/stream/slot.rs:54:44
[INFO] [stdout] running 11 tests
[INFO] [stderr]    |
[INFO] [stdout] test tests::test_cell_1 ... ok
[INFO] [stderr] 54 |     pub fn push(&mut self, t: T) -> Option<(Box<MomentBox<'b, (), Tr>>)> {
[INFO] [stdout] test tests::test_cell_2 ... ok
[INFO] [stderr]    |                                            ^                          ^
[INFO] [stdout] test tests::test_event ... ok
[INFO] [stderr]    |
[INFO] [stdout] test tests::test_context ... ok
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] test tests::test_lazy ... ok
[INFO] [stderr] help: remove these parentheses
[INFO] [stdout] test tests::test_hold ... ok
[INFO] [stderr]    |
[INFO] [stdout] test tests::test_once_and_shared ... ok
[INFO] [stderr] 54 -     pub fn push(&mut self, t: T) -> Option<(Box<MomentBox<'b, (), Tr>>)> {
[INFO] [stdout] test tests::test_macro_2 ... ok
[INFO] [stderr] 54 +     pub fn push(&mut self, t: T) -> Option<Box<MomentBox<'b, (), Tr>>> {
[INFO] [stdout] test tests::test_state ... ok
[INFO] [stderr]    | 
[INFO] [stdout] test tests::test_unit ... ok
[INFO] [stderr] 
[INFO] [stdout] test tests::test_var ... ok
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout] 
[INFO] [stderr]   --> src/moment.rs:20:55
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 20 | pub type MomentBox<'a, T, Tr: Transaction<'a> + 'a> = StateBox<Tr, Output = T> + 'a;
[INFO] [stderr]    |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 20 - pub type MomentBox<'a, T, Tr: Transaction<'a> + 'a> = StateBox<Tr, Output = T> + 'a;
[INFO] [stderr] 20 + pub type MomentBox<'a, T, Tr: Transaction<'a> + 'a> = dyn StateBox<Tr, Output = T> + 'a;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/stream/slot.rs:13:64
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stderr]    |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 13 - pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stderr] 13 + pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = dyn Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/stream/slot.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     FnMut(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 15 -     FnMut(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stderr] 15 +     dyn FnMut(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/moment.rs:17:56
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub type MomentOnce<'a, T, Tr: Transaction<'a> + 'a> = StateOnce<Tr, Output = T> + 'a;
[INFO] [stderr]    |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 17 - pub type MomentOnce<'a, T, Tr: Transaction<'a> + 'a> = StateOnce<Tr, Output = T> + 'a;
[INFO] [stderr] 17 + pub type MomentOnce<'a, T, Tr: Transaction<'a> + 'a> = dyn StateOnce<Tr, Output = T> + 'a;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/moment.rs:23:55
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub type MomentMut<'a, T, Tr: Transaction<'a> + 'a> = StateMut<Tr, Output = T> + 'a;
[INFO] [stderr]    |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 23 - pub type MomentMut<'a, T, Tr: Transaction<'a> + 'a> = StateMut<Tr, Output = T> + 'a;
[INFO] [stderr] 23 + pub type MomentMut<'a, T, Tr: Transaction<'a> + 'a> = dyn StateMut<Tr, Output = T> + 'a;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/moment.rs:26:52
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub type Moment<'a, T, Tr: Transaction<'a> + 'a> = State<Tr, Output = T> + 'a;
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 26 - pub type Moment<'a, T, Tr: Transaction<'a> + 'a> = State<Tr, Output = T> + 'a;
[INFO] [stderr] 26 + pub type Moment<'a, T, Tr: Transaction<'a> + 'a> = dyn State<Tr, Output = T> + 'a;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/state/refs.rs:18:17
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn run_once(mut self, state: &mut S) -> Self::Output {
[INFO] [stderr]    |                 ----^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/stream/slot.rs:61:23
[INFO] [stderr]    |
[INFO] [stderr] 61 |             Slot::Mut(mut f) => f(t).map(move |r| (Some(Slot::Mut(f)), r)),
[INFO] [stderr]    |                       ----^
[INFO] [stderr]    |                       |
[INFO] [stderr]    |                       help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/moment.rs:17:32
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub type MomentOnce<'a, T, Tr: Transaction<'a> + 'a> = StateOnce<Tr, Output = T> + 'a;
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^   ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stderr] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr]    |
[INFO] [stderr] 17 - pub type MomentOnce<'a, T, Tr: Transaction<'a> + 'a> = StateOnce<Tr, Output = T> + 'a;
[INFO] [stderr] 17 + pub type MomentOnce<'a, T, Tr> = StateOnce<Tr, Output = T> + 'a;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/moment.rs:20:31
[INFO] [stderr]    |
[INFO] [stderr] 20 | pub type MomentBox<'a, T, Tr: Transaction<'a> + 'a> = StateBox<Tr, Output = T> + 'a;
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^   ^^
[INFO] [stderr]    |
[INFO] [stderr] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr]    |
[INFO] [stderr] 20 - pub type MomentBox<'a, T, Tr: Transaction<'a> + 'a> = StateBox<Tr, Output = T> + 'a;
[INFO] [stderr] 20 + pub type MomentBox<'a, T, Tr> = StateBox<Tr, Output = T> + 'a;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/moment.rs:23:31
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub type MomentMut<'a, T, Tr: Transaction<'a> + 'a> = StateMut<Tr, Output = T> + 'a;
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^   ^^
[INFO] [stderr]    |
[INFO] [stderr] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr]    |
[INFO] [stderr] 23 - pub type MomentMut<'a, T, Tr: Transaction<'a> + 'a> = StateMut<Tr, Output = T> + 'a;
[INFO] [stderr] 23 + pub type MomentMut<'a, T, Tr> = StateMut<Tr, Output = T> + 'a;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/moment.rs:26:28
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub type Moment<'a, T, Tr: Transaction<'a> + 'a> = State<Tr, Output = T> + 'a;
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^   ^^
[INFO] [stderr]    |
[INFO] [stderr] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr]    |
[INFO] [stderr] 26 - pub type Moment<'a, T, Tr: Transaction<'a> + 'a> = State<Tr, Output = T> + 'a;
[INFO] [stderr] 26 + pub type Moment<'a, T, Tr> = State<Tr, Output = T> + 'a;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/cell/mod.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |         ::std::mem::replace(&mut *self.0.borrow_mut(), value);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/stream/slot.rs:13:25
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stderr]    |                         ^^
[INFO] [stderr]    |
[INFO] [stderr] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr]    |
[INFO] [stderr] 13 - pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stderr] 13 + pub type SlotFn<'a, 'b, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/stream/slot.rs:13:32
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stderr]    |                                ^^
[INFO] [stderr]    |
[INFO] [stderr] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr]    |
[INFO] [stderr] 13 - pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stderr] 13 + pub type SlotFn<'a, 'b: 'a, T, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/stream/slot.rs:13:40
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^   ^^
[INFO] [stderr]    |
[INFO] [stderr] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr]    |
[INFO] [stderr] 13 - pub type SlotFn<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stderr] 13 + pub type SlotFn<'a, 'b: 'a, T: 'a, Tr> = Fn(T) -> Option<Box<MomentBox<'b, (), Tr>>> + 'a;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/stream/slot.rs:14:28
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stderr]    |                            ^^
[INFO] [stderr]    |
[INFO] [stderr] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr]    |
[INFO] [stderr] 14 - pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stderr] 14 + pub type SlotFnMut<'a, 'b, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/stream/slot.rs:14:35
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stderr]    |                                   ^^
[INFO] [stderr]    |
[INFO] [stderr] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr]    |
[INFO] [stderr] 14 - pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stderr] 14 + pub type SlotFnMut<'a, 'b: 'a, T, Tr: Transaction<'b> + 'b> =
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/stream/slot.rs:14:43
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^^   ^^
[INFO] [stderr]    |
[INFO] [stderr] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr]    |
[INFO] [stderr] 14 - pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr: Transaction<'b> + 'b> =
[INFO] [stderr] 14 + pub type SlotFnMut<'a, 'b: 'a, T: 'a, Tr> =
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/stream/slot.rs:69:17
[INFO] [stderr]    |
[INFO] [stderr] 69 |                 ::std::mem::replace(self, slot);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: `kick` (lib) generated 21 warnings
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/tests/mod.rs:108:19
[INFO] [stderr]     |
[INFO] [stderr] 108 | fn test_cell_1() {;
[INFO] [stderr]     |                   ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/tests/mod.rs:56:18
[INFO] [stderr]    |
[INFO] [stderr] 56 |         st(move |s: &mut _| x * 2) => x;
[INFO] [stderr]    |                  ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/tests/mod.rs:57:18
[INFO] [stderr]    |
[INFO] [stderr] 57 |         st(move |s: &mut _| x + 6).map(|x| x * 3).map(|x| st(move |s: &mut _| x / 2)).join()
[INFO] [stderr]    |                  ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/tests/mod.rs:57:68
[INFO] [stderr]    |
[INFO] [stderr] 57 |         st(move |s: &mut _| x + 6).map(|x| x * 3).map(|x| st(move |s: &mut _| x / 2)).join()
[INFO] [stderr]    |                                                                    ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/tests/mod.rs:64:13
[INFO] [stderr]    |
[INFO] [stderr] 64 |         st(|s: &mut _| 1)
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]    --> src/tests/mod.rs:184:33
[INFO] [stderr]     |
[INFO] [stderr] 184 |     let m = m.bind(|x| st(move |s: &mut _| x + 6)); // (10)
[INFO] [stderr]     |                                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]    --> src/tests/mod.rs:186:32
[INFO] [stderr]     |
[INFO] [stderr] 186 |     let m = m.map(|x| st(move |s: &mut _| x / 2)); // ((15))
[INFO] [stderr]     |                                ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_macro_1`
[INFO] [stderr]   --> src/tests/mod.rs:24:4
[INFO] [stderr]    |
[INFO] [stderr] 24 | fn test_macro_1() {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `kick` (lib test) generated 29 warnings (21 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/kick-74b341bcc743425b)
[INFO] [stderr]    Doc-tests kick
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stdout] 
[INFO] [stderr]   --> /opt/rustwide/workdir/src/stream/slot.rs:54:44
[INFO] [stdout] running 3 tests
[INFO] [stderr]    |
[INFO] [stderr] 54 |     pub fn push(&mut self, t: T) -> Option<(Box<MomentBox<'b, (), Tr>>)> {
[INFO] [stderr]    |                                            ^                          ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 54 -     pub fn push(&mut self, t: T) -> Option<(Box<MomentBox<'b, (), Tr>>)> {
[INFO] [stderr] 54 +     pub fn push(&mut self, t: T) -> Option<Box<MomentBox<'b, (), Tr>>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] test src/lib.rs - kick_once (line 7) ... ok
[INFO] [stdout] test src/cell/mod.rs - cell::Cell (line 13) ... ok
[INFO] [stdout] test src/signal/variable.rs - signal::variable::Variable (line 20) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.60s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "22d12c49ab48d3f038476f5cb3c0cf498cc953a0e4172a98dcb21cc37f4d9ee8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22d12c49ab48d3f038476f5cb3c0cf498cc953a0e4172a98dcb21cc37f4d9ee8", kill_on_drop: false }`
[INFO] [stdout] 22d12c49ab48d3f038476f5cb3c0cf498cc953a0e4172a98dcb21cc37f4d9ee8