[INFO] fetching crate dragon 0.1.3...
[INFO] checking dragon-0.1.3 against master#c0bb140a37c81cf59a0b40c21c9413059644e294 for pr-129249-1
[INFO] extracting crate dragon 0.1.3 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate dragon 0.1.3
[INFO] finished tweaking crates.io crate dragon 0.1.3
[INFO] tweaked toml for crates.io crate dragon 0.1.3 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate dragon 0.1.3 on toolchain c0bb140a37c81cf59a0b40c21c9413059644e294
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c0bb140a37c81cf59a0b40c21c9413059644e294" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c0bb140a37c81cf59a0b40c21c9413059644e294" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 32 packages to latest compatible versions
[INFO] [stderr]       Adding nalgebra v0.18.1 (available: v0.35.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c0bb140a37c81cf59a0b40c21c9413059644e294" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 87c901a14bcea22d5364a2b9e2b3024f9eebccd2aad73dc203b45fe306450fa6
[INFO] running `Command { std: "docker" "start" "87c901a14bcea22d5364a2b9e2b3024f9eebccd2aad73dc203b45fe306450fa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "87c901a14bcea22d5364a2b9e2b3024f9eebccd2aad73dc203b45fe306450fa6" "/opt/rustwide/cargo-home/bin/cargo" "+c0bb140a37c81cf59a0b40c21c9413059644e294" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "87c901a14bcea22d5364a2b9e2b3024f9eebccd2aad73dc203b45fe306450fa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "87c901a14bcea22d5364a2b9e2b3024f9eebccd2aad73dc203b45fe306450fa6" "/opt/rustwide/cargo-home/bin/cargo" "+c0bb140a37c81cf59a0b40c21c9413059644e294" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking num-complex v0.2.4
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-rational v0.2.4
[INFO] [stderr]     Checking alga v0.9.3
[INFO] [stderr]     Checking nalgebra v0.18.1
[INFO] [stderr]     Checking dragon v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `state` is never read
[INFO] [stdout]  --> src/ecs/systems/rendering.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct RenderingSystem {
[INFO] [stdout]   |            --------------- field in this struct
[INFO] [stdout] 5 |     state: Rc<WorldState>
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/core/mesh.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn cook(&self) -> MeshRecipe;
[INFO] [stdout]    |             ^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |             |
[INFO] [stdout]    |             the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn cook(&self) -> MeshRecipe<'_>;
[INFO] [stdout]    |                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/core/mesh.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn cook(&self) -> MeshRecipe {
[INFO] [stdout]    |             ^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |             |
[INFO] [stdout]    |             the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn cook(&self) -> MeshRecipe<'_> {
[INFO] [stdout]    |                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/core/mesh.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn cook(&self) -> MeshRecipe {
[INFO] [stdout]    |             ^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |             |
[INFO] [stdout]    |             the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn cook(&self) -> MeshRecipe<'_> {
[INFO] [stdout]    |                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/core/mesh.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn cook(&self) -> MeshRecipe {
[INFO] [stdout]     |             ^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |             |
[INFO] [stdout]     |             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn cook(&self) -> MeshRecipe<'_> {
[INFO] [stdout]     |                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/ecs/component.rs:23:40
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn get<C: 'static + Component>(&self) -> Ref<HashMap<u32, C>> {
[INFO] [stdout]    |                                        ^^^^^     ^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                        |
[INFO] [stdout]    |                                        the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn get<C: 'static + Component>(&self) -> Ref<'_, HashMap<u32, C>> {
[INFO] [stdout]    |                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/ecs/component.rs:26:44
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn get_mut<C: 'static + Component>(&self) -> RefMut<HashMap<u32, C>> {
[INFO] [stdout]    |                                            ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                            |
[INFO] [stdout]    |                                            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn get_mut<C: 'static + Component>(&self) -> RefMut<'_, HashMap<u32, C>> {
[INFO] [stdout]    |                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/ecs/system.rs:44:16
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn get(&self, name: &str) -> Ref<Box<dyn System>> {
[INFO] [stdout]    |                ^^^^^                 ^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                |
[INFO] [stdout]    |                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn get(&self, name: &str) -> Ref<'_, Box<dyn System>> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/ecs/system.rs:48:20
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn get_mut(&self, name: &str) -> RefMut<Box<dyn System>> {
[INFO] [stdout]    |                    ^^^^^                 ^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn get_mut(&self, name: &str) -> RefMut<'_, Box<dyn System>> {
[INFO] [stdout]    |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/ecs/stage.rs:46:16
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn get(&self, name: &str) -> Ref<Box<dyn Stage>> {
[INFO] [stdout]    |                ^^^^^                 ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                |
[INFO] [stdout]    |                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn get(&self, name: &str) -> Ref<'_, Box<dyn Stage>> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/ecs/stage.rs:50:20
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn get_mut(&self, name: &str) -> RefMut<Box<dyn Stage>> {
[INFO] [stdout]    |                    ^^^^^                 ^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn get_mut(&self, name: &str) -> RefMut<'_, Box<dyn Stage>> {
[INFO] [stdout]    |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `state` is never read
[INFO] [stdout]  --> src/ecs/systems/rendering.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct RenderingSystem {
[INFO] [stdout]   |            --------------- field in this struct
[INFO] [stdout] 5 |     state: Rc<WorldState>
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/core/mesh.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn cook(&self) -> MeshRecipe;
[INFO] [stdout]    |             ^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |             |
[INFO] [stdout]    |             the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn cook(&self) -> MeshRecipe<'_>;
[INFO] [stdout]    |                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/core/mesh.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn cook(&self) -> MeshRecipe {
[INFO] [stdout]    |             ^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |             |
[INFO] [stdout]    |             the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn cook(&self) -> MeshRecipe<'_> {
[INFO] [stdout]    |                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/core/mesh.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn cook(&self) -> MeshRecipe {
[INFO] [stdout]    |             ^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |             |
[INFO] [stdout]    |             the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn cook(&self) -> MeshRecipe<'_> {
[INFO] [stdout]    |                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/core/mesh.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn cook(&self) -> MeshRecipe {
[INFO] [stdout]     |             ^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |             |
[INFO] [stdout]     |             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn cook(&self) -> MeshRecipe<'_> {
[INFO] [stdout]     |                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/ecs/component.rs:23:40
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn get<C: 'static + Component>(&self) -> Ref<HashMap<u32, C>> {
[INFO] [stdout]    |                                        ^^^^^     ^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                        |
[INFO] [stdout]    |                                        the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn get<C: 'static + Component>(&self) -> Ref<'_, HashMap<u32, C>> {
[INFO] [stdout]    |                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/ecs/component.rs:26:44
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn get_mut<C: 'static + Component>(&self) -> RefMut<HashMap<u32, C>> {
[INFO] [stdout]    |                                            ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                            |
[INFO] [stdout]    |                                            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn get_mut<C: 'static + Component>(&self) -> RefMut<'_, HashMap<u32, C>> {
[INFO] [stdout]    |                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/ecs/system.rs:44:16
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn get(&self, name: &str) -> Ref<Box<dyn System>> {
[INFO] [stdout]    |                ^^^^^                 ^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                |
[INFO] [stdout]    |                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn get(&self, name: &str) -> Ref<'_, Box<dyn System>> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/ecs/system.rs:48:20
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn get_mut(&self, name: &str) -> RefMut<Box<dyn System>> {
[INFO] [stdout]    |                    ^^^^^                 ^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn get_mut(&self, name: &str) -> RefMut<'_, Box<dyn System>> {
[INFO] [stdout]    |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/ecs/stage.rs:46:16
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn get(&self, name: &str) -> Ref<Box<dyn Stage>> {
[INFO] [stdout]    |                ^^^^^                 ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                |
[INFO] [stdout]    |                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn get(&self, name: &str) -> Ref<'_, Box<dyn Stage>> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/ecs/stage.rs:50:20
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn get_mut(&self, name: &str) -> RefMut<Box<dyn Stage>> {
[INFO] [stdout]    |                    ^^^^^                 ^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn get_mut(&self, name: &str) -> RefMut<'_, Box<dyn Stage>> {
[INFO] [stdout]    |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.52s
[INFO] running `Command { std: "docker" "inspect" "87c901a14bcea22d5364a2b9e2b3024f9eebccd2aad73dc203b45fe306450fa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87c901a14bcea22d5364a2b9e2b3024f9eebccd2aad73dc203b45fe306450fa6", kill_on_drop: false }`
[INFO] [stdout] 87c901a14bcea22d5364a2b9e2b3024f9eebccd2aad73dc203b45fe306450fa6
