[INFO] cloning repository https://github.com/DanielMowitz/U4x
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DanielMowitz/U4x" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanielMowitz%2FU4x", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanielMowitz%2FU4x'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b924d38cd88178ce05b1de5c6d5ea0b64aaf12b0
[INFO] testing DanielMowitz/U4x against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanielMowitz%2FU4x" "/workspace/builds/worker-28/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-28/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DanielMowitz/U4x 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 git repo https://github.com/DanielMowitz/U4x
[INFO] finished tweaking git repo https://github.com/DanielMowitz/U4x
[INFO] tweaked toml for git repo https://github.com/DanielMowitz/U4x written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate git repo https://github.com/DanielMowitz/U4x already has a lockfile, it will not be regenerated
[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-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] bd6872020e5319baeefc31be0da94ed3a5f217fc67e7ddbaa84a34fb4b84b974
[INFO] running `Command { std: "docker" "start" "-a" "bd6872020e5319baeefc31be0da94ed3a5f217fc67e7ddbaa84a34fb4b84b974", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd6872020e5319baeefc31be0da94ed3a5f217fc67e7ddbaa84a34fb4b84b974", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd6872020e5319baeefc31be0da94ed3a5f217fc67e7ddbaa84a34fb4b84b974", kill_on_drop: false }`
[INFO] [stdout] bd6872020e5319baeefc31be0da94ed3a5f217fc67e7ddbaa84a34fb4b84b974
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 7023d394d48955e7a64e346b9d19b13b6460a66bb9b99f2e8e399c1492053172
[INFO] running `Command { std: "docker" "start" "-a" "7023d394d48955e7a64e346b9d19b13b6460a66bb9b99f2e8e399c1492053172", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling libc v0.2.49
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling sdl2-sys v0.32.5
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.3
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_os v0.1.2
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling sdl2 v0.32.1
[INFO] [stderr]    Compiling frame v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::thread::sleep`
[INFO] [stdout]  --> src/renderer.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::thread::sleep;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/renderer.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/img.rs:75:14
[INFO] [stdout]    |
[INFO] [stdout] 75 |     type Item = (Vec<u8>);
[INFO] [stdout]    |                 ^       ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 75 -     type Item = (Vec<u8>);
[INFO] [stdout] 75 +     type Item = Vec<u8>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(duration_float)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `duration_float` has been stable since 1.38.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(duration_float)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:20:86
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn game_loop<'a>(disp: & mut dispatcher::Dispatcher<'a>, store_refs: Vec<&'a mut store::Store<'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 fn game_loop<'a>(disp: & mut dispatcher::Dispatcher<'a>, store_refs: Vec<&'a mut store::Store<'a>>) {
[INFO] [stdout] 20 + pub fn game_loop<'a>(disp: & mut dispatcher::Dispatcher<'a>, store_refs: Vec<&'a mut dyn store::Store<'a>>) {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/dispatcher.rs:23:44
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub store_refs: Option<Vec<Option<&'a mut Store<'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 store_refs: Option<Vec<Option<&'a mut Store<'a>>>>,
[INFO] [stdout] 23 +     pub store_refs: Option<Vec<Option<&'a mut dyn Store<'a>>>>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/store.rs:5:22
[INFO] [stdout]   |
[INFO] [stdout] 5 |     NoNewAction(&'a mut Store<'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] 5 -     NoNewAction(&'a mut Store<'a>),
[INFO] [stdout] 5 +     NoNewAction(&'a mut dyn Store<'a>),
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/store.rs:6:60
[INFO] [stdout]   |
[INFO] [stdout] 6 |     NewAction(Vec<Action>, /*add to secondary*/ bool, &'a mut Store<'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] 6 -     NewAction(Vec<Action>, /*add to secondary*/ bool, &'a mut Store<'a>),
[INFO] [stdout] 6 +     NewAction(Vec<Action>, /*add to secondary*/ bool, &'a mut dyn Store<'a>),
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/store.rs:10:22
[INFO] [stdout]    |
[INFO] [stdout] 10 |     NoNewAction(&'a mut super::scene_manager::Scene<'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] 10 -     NoNewAction(&'a mut super::scene_manager::Scene<'a>),
[INFO] [stdout] 10 +     NoNewAction(&'a mut dyn super::scene_manager::Scene<'a>),
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/store.rs:11:40
[INFO] [stdout]    |
[INFO] [stdout] 11 |     NewAction(Vec<MenuSubAction>, &'a mut super::scene_manager::Scene<'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] 11 -     NewAction(Vec<MenuSubAction>, &'a mut super::scene_manager::Scene<'a>),
[INFO] [stdout] 11 +     NewAction(Vec<MenuSubAction>, &'a mut dyn super::scene_manager::Scene<'a>),
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/button.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 7 |     click_fn: Box<Fn() -> MenuSubAction>,
[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] 7 -     click_fn: Box<Fn() -> MenuSubAction>,
[INFO] [stdout] 7 +     click_fn: Box<dyn Fn() -> MenuSubAction>,
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/scene_manager.rs:55:36
[INFO] [stdout]    |
[INFO] [stdout] 55 |     scenes: Option<Vec<Option<&'a mut Scene<'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] 55 -     scenes: Option<Vec<Option<&'a mut Scene<'a>>>>,
[INFO] [stdout] 55 +     scenes: Option<Vec<Option<&'a mut dyn Scene<'a>>>>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/dispatcher.rs:216:55
[INFO] [stdout]     |
[INFO] [stdout] 216 |     pub fn enter_refs(&mut self, references: Vec<&'a mut Store<'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] 216 -     pub fn enter_refs(&mut self, references: Vec<&'a mut Store<'a>>) {
[INFO] [stdout] 216 +     pub fn enter_refs(&mut self, references: Vec<&'a mut dyn Store<'a>>) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/button.rs:20:41
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn set_onclick(&mut self, fun: Box<Fn() -> MenuSubAction>) {
[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] 20 -     pub fn set_onclick(&mut self, fun: Box<Fn() -> MenuSubAction>) {
[INFO] [stdout] 20 +     pub fn set_onclick(&mut self, fun: Box<dyn Fn() -> MenuSubAction>) {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/button.rs:42:43
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn new(sprite: Sprite, click_fn: Box<Fn() -> MenuSubAction>) -> Self {
[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] 42 -     pub fn new(sprite: Sprite, click_fn: Box<Fn() -> MenuSubAction>) -> Self {
[INFO] [stdout] 42 +     pub fn new(sprite: Sprite, click_fn: Box<dyn Fn() -> MenuSubAction>) -> Self {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/scene_manager.rs:68:55
[INFO] [stdout]    |
[INFO] [stdout] 68 |     pub fn add_scenes(&mut self, references: Vec<&'a mut Scene<'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] 68 -     pub fn add_scenes(&mut self, references: Vec<&'a mut Scene<'a>>) {
[INFO] [stdout] 68 +     pub fn add_scenes(&mut self, references: Vec<&'a mut dyn Scene<'a>>) {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/dispatcher.rs:217:48
[INFO] [stdout]     |
[INFO] [stdout] 217 |         let mut local_store_refs: Vec<Option<&'a mut Store<'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] 217 -         let mut local_store_refs: Vec<Option<&'a mut Store<'a>>>;
[INFO] [stdout] 217 +         let mut local_store_refs: Vec<Option<&'a mut dyn Store<'a>>>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/scene_manager.rs:69:44
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let mut local_scenes: Vec<Option<&'a mut Scene<'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] 69 -         let mut local_scenes: Vec<Option<&'a mut Scene<'a>>>;
[INFO] [stdout] 69 +         let mut local_scenes: Vec<Option<&'a mut dyn Scene<'a>>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `frame` due to 2 previous errors; 18 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7023d394d48955e7a64e346b9d19b13b6460a66bb9b99f2e8e399c1492053172", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7023d394d48955e7a64e346b9d19b13b6460a66bb9b99f2e8e399c1492053172", kill_on_drop: false }`
[INFO] [stdout] 7023d394d48955e7a64e346b9d19b13b6460a66bb9b99f2e8e399c1492053172