[INFO] cloning repository https://github.com/KayDevs/RustLuaECS
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/KayDevs/RustLuaECS" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKayDevs%2FRustLuaECS", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKayDevs%2FRustLuaECS'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 622f1065e32677f4f434dc354d79034079fba3ae
[INFO] checking KayDevs/RustLuaECS against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKayDevs%2FRustLuaECS" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/KayDevs/RustLuaECS on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/KayDevs/RustLuaECS
[INFO] finished tweaking git repo https://github.com/KayDevs/RustLuaECS
[INFO] tweaked toml for git repo https://github.com/KayDevs/RustLuaECS written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/KayDevs/RustLuaECS 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" "+5518eaa946291f00471af8b254b2a1715f234882" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v0.3.15
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[INFO] [stderr]   Downloaded syn v0.11.11
[INFO] [stderr]   Downloaded rlua_serde v0.3.0
[INFO] [stderr]   Downloaded rust-embed-impl v4.3.0
[INFO] [stderr]   Downloaded walkdir v2.2.7
[INFO] [stderr]   Downloaded cc v1.0.31
[INFO] [stderr]   Downloaded rlua v0.16.2
[INFO] [stderr]   Downloaded syn v0.15.29
[INFO] [stderr]   Downloaded rust-embed v4.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f4c1d9ffc180867716a2e25c0269d47fbae382b5e7992b67de580a78db1ac0f
[INFO] running `Command { std: "docker" "start" "-a" "8f4c1d9ffc180867716a2e25c0269d47fbae382b5e7992b67de580a78db1ac0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f4c1d9ffc180867716a2e25c0269d47fbae382b5e7992b67de580a78db1ac0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f4c1d9ffc180867716a2e25c0269d47fbae382b5e7992b67de580a78db1ac0f", kill_on_drop: false }`
[INFO] [stdout] 8f4c1d9ffc180867716a2e25c0269d47fbae382b5e7992b67de580a78db1ac0f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b08a1e3d6401cd662a15d765626f0ab7182838ce913c1ca8b2c06c78d9b65c4b
[INFO] running `Command { std: "docker" "start" "-a" "b08a1e3d6401cd662a15d765626f0ab7182838ce913c1ca8b2c06c78d9b65c4b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling num-traits v0.2.6
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[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling cc v1.0.31
[INFO] [stderr]    Compiling cfg-if v0.1.7
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling sdl2-sys v0.32.5
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling walkdir v2.2.7
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling luasys v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling rlua v0.16.2
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking sdl2 v0.32.1
[INFO] [stderr]    Compiling rust-embed-impl v4.3.0
[INFO] [stderr]     Checking rust-embed v4.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking rlua_serde v0.3.0
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:31:30
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn main() ->  Result<(), Box<Error>> {
[INFO] [stdout]    |                              ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn main() ->  Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/world.rs:16:26
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn as_any(&self) -> &std::any::Any;
[INFO] [stdout]    |                          ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn as_any(&self) -> &dyn std::any::Any;
[INFO] [stdout]    |                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/world.rs:17:38
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn as_any_mut(&mut self) -> &mut std::any::Any;
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn as_any_mut(&mut self) -> &mut dyn std::any::Any;
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/world.rs:33:26
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn as_any(&self) -> &std::any::Any {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn as_any(&self) -> &dyn std::any::Any {
[INFO] [stdout]    |                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/world.rs:37:38
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn as_any_mut(&mut self) -> &mut std::any::Any {
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn as_any_mut(&mut self) -> &mut dyn std::any::Any {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/world.rs:203:70
[INFO] [stdout]     |
[INFO] [stdout] 203 |     pub fn add_native_system(&self, ctx: rlua::Context, mut system: Box<AnyNativeSystem>, system_name: &str, object_name: &str) {
[INFO] [stdout]     |                                                                         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 203 |     pub fn add_native_system(&self, ctx: rlua::Context, mut system: Box<dyn AnyNativeSystem>, system_name: &str, object_name: &str) {
[INFO] [stdout]     |                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/sdl_renderer.rs:20:89
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn new(sdl_context: &Sdl, name: &str, width: u32, height: u32) -> Result<Self, Box<std::error::Error>> {
[INFO] [stdout]    |                                                                                            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn new(sdl_context: &Sdl, name: &str, width: u32, height: u32) -> Result<Self, Box<dyn std::error::Error>> {
[INFO] [stdout]    |                                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:31:30
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn main() ->  Result<(), Box<Error>> {
[INFO] [stdout]    |                              ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn main() ->  Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/world.rs:16:26
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn as_any(&self) -> &std::any::Any;
[INFO] [stdout]    |                          ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn as_any(&self) -> &dyn std::any::Any;
[INFO] [stdout]    |                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/world.rs:17:38
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn as_any_mut(&mut self) -> &mut std::any::Any;
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn as_any_mut(&mut self) -> &mut dyn std::any::Any;
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/world.rs:33:26
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn as_any(&self) -> &std::any::Any {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn as_any(&self) -> &dyn std::any::Any {
[INFO] [stdout]    |                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/world.rs:37:38
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn as_any_mut(&mut self) -> &mut std::any::Any {
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn as_any_mut(&mut self) -> &mut dyn std::any::Any {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/world.rs:203:70
[INFO] [stdout]     |
[INFO] [stdout] 203 |     pub fn add_native_system(&self, ctx: rlua::Context, mut system: Box<AnyNativeSystem>, system_name: &str, object_name: &str) {
[INFO] [stdout]     |                                                                         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 203 |     pub fn add_native_system(&self, ctx: rlua::Context, mut system: Box<dyn AnyNativeSystem>, system_name: &str, object_name: &str) {
[INFO] [stdout]     |                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/sdl_renderer.rs:20:89
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn new(sdl_context: &Sdl, name: &str, width: u32, height: u32) -> Result<Self, Box<std::error::Error>> {
[INFO] [stdout]    |                                                                                            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn new(sdl_context: &Sdl, name: &str, width: u32, height: u32) -> Result<Self, Box<dyn std::error::Error>> {
[INFO] [stdout]    |                                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/world.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         std::any::Any::downcast_ref::<T>(self.as_any())
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 |         <dyn std::any::Any>::downcast_ref::<T>(self.as_any())
[INFO] [stdout]    |         ++++              +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/world.rs:26:6
[INFO] [stdout]    |
[INFO] [stdout] 26 |         std::any::Any::downcast_mut::<T>(self.as_any_mut())
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 |         <dyn std::any::Any>::downcast_mut::<T>(self.as_any_mut())
[INFO] [stdout]    |         ++++              +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/world.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         std::any::Any::downcast_ref::<T>(self.as_any())
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 |         <dyn std::any::Any>::downcast_ref::<T>(self.as_any())
[INFO] [stdout]    |         ++++              +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/world.rs:26:6
[INFO] [stdout]    |
[INFO] [stdout] 26 |         std::any::Any::downcast_mut::<T>(self.as_any_mut())
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 |         <dyn std::any::Any>::downcast_mut::<T>(self.as_any_mut())
[INFO] [stdout]    |         ++++              +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/render.rs:181:9
[INFO] [stdout]     |
[INFO] [stdout] 181 |                 let mut animation = self.animations.get_mut(i).unwrap().animations.get_mut(&current_animation).unwrap();
[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/render.rs:181:9
[INFO] [stdout]     |
[INFO] [stdout] 181 |                 let mut animation = self.animations.get_mut(i).unwrap().animations.get_mut(&current_animation).unwrap();
[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: method `read_native_system` is never used
[INFO] [stdout]    --> src/world.rs:249:9
[INFO] [stdout]     |
[INFO] [stdout] 247 | impl WorldRef {
[INFO] [stdout]     | ------------- method in this implementation
[INFO] [stdout] 248 |     //delegates
[INFO] [stdout] 249 |     pub fn read_native_system<Sys, F>(&self, object_name: &str, f: F)
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `read_native_system` is never used
[INFO] [stdout]    --> src/world.rs:249:9
[INFO] [stdout]     |
[INFO] [stdout] 247 | impl WorldRef {
[INFO] [stdout]     | ------------- method in this implementation
[INFO] [stdout] 248 |     //delegates
[INFO] [stdout] 249 |     pub fn read_native_system<Sys, F>(&self, object_name: &str, f: F)
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.89s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rlua v0.16.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "b08a1e3d6401cd662a15d765626f0ab7182838ce913c1ca8b2c06c78d9b65c4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b08a1e3d6401cd662a15d765626f0ab7182838ce913c1ca8b2c06c78d9b65c4b", kill_on_drop: false }`
[INFO] [stdout] b08a1e3d6401cd662a15d765626f0ab7182838ce913c1ca8b2c06c78d9b65c4b
