[INFO] fetching crate synco 0.0.0...
[INFO] testing synco-0.0.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate synco 0.0.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate synco 0.0.0
[INFO] finished tweaking crates.io crate synco 0.0.0
[INFO] tweaked toml for crates.io crate synco 0.0.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate synco 0.0.0 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate synco 0.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fc0414606301590cf195ac0bd47d223d47ae109d0ec08f094c76dad9149ad937
[INFO] running `Command { std: "docker" "start" "-a" "fc0414606301590cf195ac0bd47d223d47ae109d0ec08f094c76dad9149ad937", kill_on_drop: false }`
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[INFO] [stdout] fc0414606301590cf195ac0bd47d223d47ae109d0ec08f094c76dad9149ad937
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3829adc3337e4a1049cef6352a398b2b1d2727ed507889deb154799a27cc5a73
[INFO] running `Command { std: "docker" "start" "-a" "3829adc3337e4a1049cef6352a398b2b1d2727ed507889deb154799a27cc5a73", kill_on_drop: false }`
[INFO] [stderr]    Compiling anymap v0.12.1
[INFO] [stderr]    Compiling synco v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     min_type_alias_impl_trait,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in 1.56.0; see <https://github.com/rust-lang/rust/pull/87564> for more information
[INFO] [stdout]   = note: removed in favor of full type_alias_impl_trait
[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(
[INFO] [stdout] 2 | |     generic_associated_types,
[INFO] [stdout] 3 | |     maybe_uninit_ref,
[INFO] [stdout] 4 | |     maybe_uninit_extra,
[INFO] [stdout] ... |
[INFO] [stdout] 8 | |     fn_traits,
[INFO] [stdout] 9 | | )]
[INFO] [stdout]   | |__^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `generic_associated_types` has been stable since `1.65.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `impl Trait` in type aliases is unstable
[INFO] [stdout]    --> src/entity.rs:107:27
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub type EntityIter<'a> = impl Iterator<Item = Entity> + 'a;
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `impl Trait` in associated types is unstable
[INFO] [stdout]   --> src/system.rs:93:28
[INFO] [stdout]    |
[INFO] [stdout] 93 |     type System = FnSystem<impl FnOnce(Args) -> O, Args, O>;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/entity.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::*;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Ref`
[INFO] [stdout]  --> src/query.rs:4:24
[INFO] [stdout]   |
[INFO] [stdout] 4 |     cell::{UnsafeCell, Ref},
[INFO] [stdout]   |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/query.rs:156:20
[INFO] [stdout]     |
[INFO] [stdout] 156 |                 };);*
[INFO] [stdout]     |                    ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: where clause not allowed here
[INFO] [stdout]   --> src/storage.rs:38:22
[INFO] [stdout]    |
[INFO] [stdout] 38 |         type Ref<'a> where T: 'a = &'a T;
[INFO] [stdout]    |                      ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #89122 <https://github.com/rust-lang/rust/issues/89122> for more information
[INFO] [stdout]    = note: `#[warn(deprecated_where_clause_location)]` on by default
[INFO] [stdout] help: move it to the end of the type declaration
[INFO] [stdout]    |
[INFO] [stdout] 38 -         type Ref<'a> where T: 'a = &'a T;
[INFO] [stdout] 38 +         type Ref<'a>  = &'a T where T: 'a;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: where clause not allowed here
[INFO] [stdout]   --> src/storage.rs:39:25
[INFO] [stdout]    |
[INFO] [stdout] 39 |         type RefMut<'a> where T: 'a = &'a mut T;
[INFO] [stdout]    |                         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #89122 <https://github.com/rust-lang/rust/issues/89122> for more information
[INFO] [stdout] help: move it to the end of the type declaration
[INFO] [stdout]    |
[INFO] [stdout] 39 -         type RefMut<'a> where T: 'a = &'a mut T;
[INFO] [stdout] 39 +         type RefMut<'a>  = &'a mut T where T: 'a;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: where clause not allowed here
[INFO] [stdout]   --> src/storage.rs:72:22
[INFO] [stdout]    |
[INFO] [stdout] 72 |         type Ref<'a> where T: 'a = &'a T;
[INFO] [stdout]    |                      ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #89122 <https://github.com/rust-lang/rust/issues/89122> for more information
[INFO] [stdout] help: move it to the end of the type declaration
[INFO] [stdout]    |
[INFO] [stdout] 72 -         type Ref<'a> where T: 'a = &'a T;
[INFO] [stdout] 72 +         type Ref<'a>  = &'a T where T: 'a;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: where clause not allowed here
[INFO] [stdout]   --> src/storage.rs:73:25
[INFO] [stdout]    |
[INFO] [stdout] 73 |         type RefMut<'a> where T: 'a = &'a mut T;
[INFO] [stdout]    |                         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #89122 <https://github.com/rust-lang/rust/issues/89122> for more information
[INFO] [stdout] help: move it to the end of the type declaration
[INFO] [stdout]    |
[INFO] [stdout] 73 -         type RefMut<'a> where T: 'a = &'a mut T;
[INFO] [stdout] 73 +         type RefMut<'a>  = &'a mut T where T: 'a;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `generic_associated_types` has been stable since 1.65.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     generic_associated_types,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `maybe_uninit_extra` has been stable since 1.60.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     maybe_uninit_extra,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `maybe_uninit_ref` has been stable since 1.55.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     maybe_uninit_ref,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0059]: type parameter to bare `FnOnce` trait must be a tuple
[INFO] [stdout]   --> src/system.rs:92:27
[INFO] [stdout]    |
[INFO] [stdout] 92 | impl<'a, Fn: FnOnce<Args, Output = O>, Args: Input<'a>, O> IntoSystem<'a, Args> for Fn {
[INFO] [stdout]    |                           ^^^^^^^^^^ the trait `Tuple` is not implemented for `Args`
[INFO] [stdout]    |
[INFO] [stdout] note: required by a bound in `FnOnce`
[INFO] [stdout]   --> /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/ops/function.rs:242:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained opaque type
[INFO] [stdout]    --> src/entity.rs:107:27
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub type EntityIter<'a> = impl Iterator<Item = Entity> + 'a;
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `EntityIter` must be used in combination with a concrete type within the same crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `Args` is not a tuple
[INFO] [stdout]   --> src/system.rs:94:80
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn into_system(self) -> Self::System { FnSystem(move |args| self.call_once(args), PhantomData) }
[INFO] [stdout]    |                                                                      --------- ^^^^ the trait `Tuple` is not implemented for `Args`
[INFO] [stdout]    |                                                                      |
[INFO] [stdout]    |                                                                      required by a bound introduced by this call
[INFO] [stdout]    |
[INFO] [stdout] note: required by a bound in `call_once`
[INFO] [stdout]   --> /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/ops/function.rs:250:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/entity.rs:93:9
[INFO] [stdout]     |
[INFO] [stdout]  90 |       pub(crate) fn iter_filter<'a>(&'a self, filter: &'a (BitMask, BitMask)) -> EntityIter<'a> {
[INFO] [stdout]     |                                                                                  -------------- expected `EntityIter<'a>` because of return type
[INFO] [stdout] ...
[INFO] [stdout]  93 | /         self.entities
[INFO] [stdout]  94 | |             .iter()
[INFO] [stdout]  95 | |             .enumerate()
[INFO] [stdout]  96 | |             .filter(move |(i, entry)| {
[INFO] [stdout] ...   |
[INFO] [stdout] 102 | |                 gen: entry.gen,
[INFO] [stdout] 103 | |             })
[INFO] [stdout]     | |______________^ expected opaque type, found `Map<Filter<Enumerate<...>, ...>, ...>`
[INFO] [stdout] ...
[INFO] [stdout] 107 |   pub type EntityIter<'a> = impl Iterator<Item = Entity> + 'a;
[INFO] [stdout]     |                             --------------------------------- the expected opaque type
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected opaque type `EntityIter<'a>`
[INFO] [stdout]                     found struct `std::iter::Map<Filter<Enumerate<std::slice::Iter<'_, entity::Entry>>, {closure@src/entity.rs:96:21: 96:38}>, {closure@src/entity.rs:100:18: 100:32}>`
[INFO] [stdout] note: this item must have a `#[define_opaque(EntityIter)]` attribute to be able to define hidden types
[INFO] [stdout]    --> src/entity.rs:90:19
[INFO] [stdout]     |
[INFO] [stdout]  90 |     pub(crate) fn iter_filter<'a>(&'a self, filter: &'a (BitMask, BitMask)) -> EntityIter<'a> {
[INFO] [stdout]     |                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ecs`
[INFO] [stdout]    --> src/query.rs:117:20
[INFO] [stdout]     |
[INFO] [stdout] 117 |     fn comp_filter(ecs: &Ecs) -> (BitMask, BitMask) {
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_ecs`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ecs`
[INFO] [stdout]    --> src/query.rs:122:24
[INFO] [stdout]     |
[INFO] [stdout] 122 |     fn fetch_inner<'a>(ecs: &'a Ecs) -> Self::State<'a> { () }
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_ecs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]    --> src/query.rs:124:41
[INFO] [stdout]     |
[INFO] [stdout] 124 |     unsafe fn get_unchecked<'a, 'b: 'a>(state: &'a mut Self::State<'b>, entity: Entity) -> Self::Output<'a> {
[INFO] [stdout]     |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ecs`
[INFO] [stdout]    --> src/query.rs:139:24
[INFO] [stdout]     |
[INFO] [stdout] 139 |     fn fetch_inner<'a>(ecs: &'a Ecs) -> Self::State<'a> {}
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_ecs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]    --> src/query.rs:141:41
[INFO] [stdout]     |
[INFO] [stdout] 141 |     unsafe fn get_unchecked<'a, 'b: 'a>(state: &'a mut Self::State<'b>, entity: Entity) -> Self::Output<'a> {}
[INFO] [stdout]     |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entity`
[INFO] [stdout]    --> src/query.rs:141:73
[INFO] [stdout]     |
[INFO] [stdout] 141 |     unsafe fn get_unchecked<'a, 'b: 'a>(state: &'a mut Self::State<'b>, entity: Entity) -> Self::Output<'a> {}
[INFO] [stdout]     |                                                                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_entity`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ecs`
[INFO] [stdout]    --> src/query.rs:150:28
[INFO] [stdout]     |
[INFO] [stdout] 150 |             fn comp_filter(ecs: &Ecs) -> (BitMask, BitMask) {
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_ecs`
[INFO] [stdout] ...
[INFO] [stdout] 172 | impl_for_tuple!();
[INFO] [stdout]     | ----------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ecs`
[INFO] [stdout]    --> src/query.rs:160:32
[INFO] [stdout]     |
[INFO] [stdout] 160 |             fn fetch_inner<'a>(ecs: &'a Ecs) -> Self::State<'a> {
[INFO] [stdout]     |                                ^^^ help: if this is intentional, prefix it with an underscore: `_ecs`
[INFO] [stdout] ...
[INFO] [stdout] 172 | impl_for_tuple!();
[INFO] [stdout]     | ----------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entity`
[INFO] [stdout]    --> src/query.rs:165:85
[INFO] [stdout]     |
[INFO] [stdout] 165 |             unsafe fn get_unchecked<'a, 'b: 'a>(($($x,)*): &'a mut Self::State<'b>, entity: Entity) -> Self::Output<'a> {
[INFO] [stdout]     |                                                                                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_entity`
[INFO] [stdout] ...
[INFO] [stdout] 172 | impl_for_tuple!();
[INFO] [stdout]     | ----------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entity`
[INFO] [stdout]   --> src/storage.rs:41:40
[INFO] [stdout]    |
[INFO] [stdout] 41 |         unsafe fn get_unchecked(&self, entity: Entity) -> Self::Ref<'_> {
[INFO] [stdout]    |                                        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_entity`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entity`
[INFO] [stdout]   --> src/storage.rs:46:48
[INFO] [stdout]    |
[INFO] [stdout] 46 |         unsafe fn get_unchecked_mut(&mut self, entity: Entity) -> Self::RefMut<'_> {
[INFO] [stdout]    |                                                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_entity`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entity`
[INFO] [stdout]   --> src/storage.rs:51:47
[INFO] [stdout]    |
[INFO] [stdout] 51 |         unsafe fn insert_unchecked(&mut self, entity: Entity, item: T) {}
[INFO] [stdout]    |                                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_entity`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/storage.rs:51:63
[INFO] [stdout]    |
[INFO] [stdout] 51 |         unsafe fn insert_unchecked(&mut self, entity: Entity, item: T) {}
[INFO] [stdout]    |                                                               ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entity`
[INFO] [stdout]   --> src/storage.rs:53:47
[INFO] [stdout]    |
[INFO] [stdout] 53 |         unsafe fn remove_unchecked(&mut self, entity: Entity) -> T {
[INFO] [stdout]    |                                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_entity`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ecs`
[INFO] [stdout]   --> src/system.rs:31:22
[INFO] [stdout]    |
[INFO] [stdout] 31 |             fn fetch(ecs: &'a Ecs) -> Self {
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_ecs`
[INFO] [stdout] ...
[INFO] [stdout] 38 | impl_for_tuple!();
[INFO] [stdout]    | ----------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `comp`
[INFO] [stdout]    --> src/lib.rs:163:65
[INFO] [stdout]     |
[INFO] [stdout] 163 |     pub fn remove_comp<C: Component>(&mut self, entity: Entity, comp: C) -> Option<C> {
[INFO] [stdout]     |                                                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_comp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0059, E0277, E0308, E0554, E0557, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0059`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `synco` (lib) due to 8 previous errors; 26 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "3829adc3337e4a1049cef6352a398b2b1d2727ed507889deb154799a27cc5a73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3829adc3337e4a1049cef6352a398b2b1d2727ed507889deb154799a27cc5a73", kill_on_drop: false }`
[INFO] [stdout] 3829adc3337e4a1049cef6352a398b2b1d2727ed507889deb154799a27cc5a73
