[INFO] crate minutae 0.2.2 is already in cache
[INFO] extracting crate minutae 0.2.2 into work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/minutae/0.2.2
[INFO] extracting crate minutae 0.2.2 into work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/minutae/0.2.2
[INFO] validating manifest of minutae-0.2.2 on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of minutae-0.2.2 on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing minutae-0.2.2
[INFO] finished frobbing minutae-0.2.2
[INFO] frobbed toml for minutae-0.2.2 written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/minutae/0.2.2/Cargo.toml
[INFO] started frobbing minutae-0.2.2
[INFO] finished frobbing minutae-0.2.2
[INFO] frobbed toml for minutae-0.2.2 written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/minutae/0.2.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking minutae-0.2.2 against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-0/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/minutae/0.2.2:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 27235b87cfd9aa508d62c8dc6b195344b3aa0a311f7df6f46e2004155bf670a6
[INFO] running `"docker" "start" "-a" "27235b87cfd9aa508d62c8dc6b195344b3aa0a311f7df6f46e2004155bf670a6"`
[INFO] [stderr]     Checking uuid v0.5.1
[INFO] [stderr]     Checking minutae v0.2.2 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/universe.rs:45:36
[INFO] [stderr]    |
[INFO] [stderr] 45 |         cell_action_executor: &mut FnMut(CA, usize),
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(CA, usize)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/universe.rs:46:36
[INFO] [stderr]    |
[INFO] [stderr] 46 |         self_action_executor: &mut FnMut(SelfAction<C, E, EA>),
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(SelfAction<C, E, EA>)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/universe.rs:47:38
[INFO] [stderr]    |
[INFO] [stderr] 47 |         entity_action_executor: &mut FnMut(EA, usize, Uuid)
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(EA, usize, Uuid)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/universe.rs:64:39
[INFO] [stderr]    |
[INFO] [stderr] 64 |         conf: UniverseConf, gen: &mut Generator<C, E, M, CA, EA>,
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Generator<C, E, M, CA, EA>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/universe.rs:71:40
[INFO] [stderr]    |
[INFO] [stderr] 71 |             cell_action_executor: &mut FnMut(CA, usize),
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(CA, usize)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/universe.rs:72:40
[INFO] [stderr]    |
[INFO] [stderr] 72 |             self_action_executor: &mut FnMut(SelfAction<C, E, EA>),
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(SelfAction<C, E, EA>)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/universe.rs:73:42
[INFO] [stderr]    |
[INFO] [stderr] 73 |             entity_action_executor: &mut FnMut(EA, usize, Uuid)
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(EA, usize, Uuid)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/engine/serial.rs:28:35
[INFO] [stderr]    |
[INFO] [stderr] 28 | > Engine<C, E, M, CA, EA> for Box<SerialEngine<C, E, M, CA, EA, CI, EI>> {
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SerialEngine<C, E, M, CA, EA, CI, EI>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/engine/serial.rs:33:37
[INFO] [stderr]    |
[INFO] [stderr] 33 |             let cell_iterator: &mut GridIterator = &mut self.iter_cells(&universe.cells);
[INFO] [stderr]    |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn GridIterator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/engine/parallel.rs:68:40
[INFO] [stderr]    |
[INFO] [stderr] 68 |             cell_action_executor: &mut FnMut(CA, usize),
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(CA, usize)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/engine/parallel.rs:69:40
[INFO] [stderr]    |
[INFO] [stderr] 69 |             self_action_executor: &mut FnMut(SelfAction<C, E, EA>),
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(SelfAction<C, E, EA>)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/engine/parallel.rs:70:42
[INFO] [stderr]    |
[INFO] [stderr] 70 |             entity_action_executor: &mut FnMut(EA, usize, Uuid)
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(EA, usize, Uuid)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/engine/parallel.rs:228:37
[INFO] [stderr]     |
[INFO] [stderr] 228 |             let grid_iterator: &mut GridIterator = grid_iterator;
[INFO] [stderr]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn GridIterator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/engine/iterator.rs:14:31
[INFO] [stderr]    |
[INFO] [stderr] 14 | impl<'a> Iterator for &'a mut GridIterator {
[INFO] [stderr]    |                               ^^^^^^^^^^^^ help: use `dyn`: `dyn GridIterator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/driver/mod.rs:18:69
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn init(self, universe: Universe<C, E, M, CA, EA>, N, &mut [Box<Middleware<C, E, M, CA, EA, N>>]);
[INFO] [stderr]    |                                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Middleware<C, E, M, CA, EA, N>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/driver/mod.rs:51:97
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn init(self, mut universe: Universe<C, E, M, CA, EA>, mut engine: N, middleware: &mut [Box<Middleware<C, E, M, CA, EA, N>>]) {
[INFO] [stderr]    |                                                                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Middleware<C, E, M, CA, EA, N>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/universe.rs:45:36
[INFO] [stderr]    |
[INFO] [stderr] 45 |         cell_action_executor: &mut FnMut(CA, usize),
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(CA, usize)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/universe.rs:46:36
[INFO] [stderr]    |
[INFO] [stderr] 46 |         self_action_executor: &mut FnMut(SelfAction<C, E, EA>),
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(SelfAction<C, E, EA>)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/universe.rs:47:38
[INFO] [stderr]    |
[INFO] [stderr] 47 |         entity_action_executor: &mut FnMut(EA, usize, Uuid)
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(EA, usize, Uuid)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/universe.rs:64:39
[INFO] [stderr]    |
[INFO] [stderr] 64 |         conf: UniverseConf, gen: &mut Generator<C, E, M, CA, EA>,
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Generator<C, E, M, CA, EA>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/universe.rs:71:40
[INFO] [stderr]    |
[INFO] [stderr] 71 |             cell_action_executor: &mut FnMut(CA, usize),
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(CA, usize)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/universe.rs:72:40
[INFO] [stderr]    |
[INFO] [stderr] 72 |             self_action_executor: &mut FnMut(SelfAction<C, E, EA>),
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(SelfAction<C, E, EA>)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/universe.rs:73:42
[INFO] [stderr]    |
[INFO] [stderr] 73 |             entity_action_executor: &mut FnMut(EA, usize, Uuid)
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(EA, usize, Uuid)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/engine/serial.rs:28:35
[INFO] [stderr]    |
[INFO] [stderr] 28 | > Engine<C, E, M, CA, EA> for Box<SerialEngine<C, E, M, CA, EA, CI, EI>> {
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SerialEngine<C, E, M, CA, EA, CI, EI>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/engine/serial.rs:33:37
[INFO] [stderr]    |
[INFO] [stderr] 33 |             let cell_iterator: &mut GridIterator = &mut self.iter_cells(&universe.cells);
[INFO] [stderr]    |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn GridIterator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/engine/parallel.rs:68:40
[INFO] [stderr]    |
[INFO] [stderr] 68 |             cell_action_executor: &mut FnMut(CA, usize),
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(CA, usize)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/engine/parallel.rs:69:40
[INFO] [stderr]    |
[INFO] [stderr] 69 |             self_action_executor: &mut FnMut(SelfAction<C, E, EA>),
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(SelfAction<C, E, EA>)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/engine/parallel.rs:70:42
[INFO] [stderr]    |
[INFO] [stderr] 70 |             entity_action_executor: &mut FnMut(EA, usize, Uuid)
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(EA, usize, Uuid)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/engine/parallel.rs:228:37
[INFO] [stderr]     |
[INFO] [stderr] 228 |             let grid_iterator: &mut GridIterator = grid_iterator;
[INFO] [stderr]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn GridIterator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/engine/iterator.rs:14:31
[INFO] [stderr]    |
[INFO] [stderr] 14 | impl<'a> Iterator for &'a mut GridIterator {
[INFO] [stderr]    |                               ^^^^^^^^^^^^ help: use `dyn`: `dyn GridIterator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/driver/mod.rs:18:69
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn init(self, universe: Universe<C, E, M, CA, EA>, N, &mut [Box<Middleware<C, E, M, CA, EA, N>>]);
[INFO] [stderr]    |                                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Middleware<C, E, M, CA, EA, N>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/driver/mod.rs:51:97
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn init(self, mut universe: Universe<C, E, M, CA, EA>, mut engine: N, middleware: &mut [Box<Middleware<C, E, M, CA, EA, N>>]) {
[INFO] [stderr]    |                                                                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Middleware<C, E, M, CA, EA, N>`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/driver/mod.rs:54:17
[INFO] [stderr]    |
[INFO] [stderr] 54 |             for mut m in middleware.iter_mut() {
[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: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(conservative_impl_trait, test)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/engine/parallel.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 |     C: CellState + 'static, E: EntityState<C> + 'static, CA: CellAction<C> + 'static, EA: EntityAction<C, E> + 'static
[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] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/engine/parallel.rs:20:32
[INFO] [stderr]    |
[INFO] [stderr] 20 |     C: CellState + 'static, E: EntityState<C> + 'static, CA: CellAction<C> + 'static, EA: EntityAction<C, E> + 'static
[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] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/engine/parallel.rs:20:62
[INFO] [stderr]    |
[INFO] [stderr] 20 |     C: CellState + 'static, E: EntityState<C> + 'static, CA: CellAction<C> + 'static, EA: EntityAction<C, E> + 'static
[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] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/engine/parallel.rs:20:91
[INFO] [stderr]    |
[INFO] [stderr] 20 |     C: CellState + 'static, E: EntityState<C> + 'static, CA: CellAction<C> + 'static, EA: EntityAction<C, E> + 'static
[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] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/driver/mod.rs:54:17
[INFO] [stderr]    |
[INFO] [stderr] 54 |             for mut m in middleware.iter_mut() {
[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: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(conservative_impl_trait, test)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/engine/parallel.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 |     C: CellState + 'static, E: EntityState<C> + 'static, CA: CellAction<C> + 'static, EA: EntityAction<C, E> + 'static
[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] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/engine/parallel.rs:20:32
[INFO] [stderr]    |
[INFO] [stderr] 20 |     C: CellState + 'static, E: EntityState<C> + 'static, CA: CellAction<C> + 'static, EA: EntityAction<C, E> + 'static
[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] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/engine/parallel.rs:20:62
[INFO] [stderr]    |
[INFO] [stderr] 20 |     C: CellState + 'static, E: EntityState<C> + 'static, CA: CellAction<C> + 'static, EA: EntityAction<C, E> + 'static
[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] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/engine/parallel.rs:20:91
[INFO] [stderr]    |
[INFO] [stderr] 20 |     C: CellState + 'static, E: EntityState<C> + 'static, CA: CellAction<C> + 'static, EA: EntityAction<C, E> + 'static
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `"docker" "inspect" "27235b87cfd9aa508d62c8dc6b195344b3aa0a311f7df6f46e2004155bf670a6"`
[INFO] running `"docker" "rm" "-f" "27235b87cfd9aa508d62c8dc6b195344b3aa0a311f7df6f46e2004155bf670a6"`
[INFO] [stdout] 27235b87cfd9aa508d62c8dc6b195344b3aa0a311f7df6f46e2004155bf670a6