[INFO] fetching crate amethyst_ecs 0.1.1...
[INFO] checking amethyst_ecs-0.1.1 against master#b286722878e18db29a7fbe672be7c4d3b02e8e4d for pr-127655
[INFO] extracting crate amethyst_ecs 0.1.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate amethyst_ecs 0.1.1 on toolchain b286722878e18db29a7fbe672be7c4d3b02e8e4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate amethyst_ecs 0.1.1
[INFO] finished tweaking crates.io crate amethyst_ecs 0.1.1
[INFO] tweaked toml for crates.io crate amethyst_ecs 0.1.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e7104218bcca1b5f422bb6b1fe046cba684c5323d08a8d25dd573d64ad505b9
[INFO] running `Command { std: "docker" "start" "-a" "4e7104218bcca1b5f422bb6b1fe046cba684c5323d08a8d25dd573d64ad505b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e7104218bcca1b5f422bb6b1fe046cba684c5323d08a8d25dd573d64ad505b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e7104218bcca1b5f422bb6b1fe046cba684c5323d08a8d25dd573d64ad505b9", kill_on_drop: false }`
[INFO] [stdout] 4e7104218bcca1b5f422bb6b1fe046cba684c5323d08a8d25dd573d64ad505b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 758a063e54de83edacde150a7e4543aef4cd10c332cc1cf092185aa7d1cd90ab
[INFO] running `Command { std: "docker" "start" "-a" "758a063e54de83edacde150a7e4543aef4cd10c332cc1cf092185aa7d1cd90ab", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking amethyst_ecs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/sim.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 |     procs: Vec<Box<Processor>>,
[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]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |     procs: Vec<Box<dyn Processor>>,
[INFO] [stdout]   |                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/sim.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 |     procs: Vec<Box<Processor>>,
[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]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |     procs: Vec<Box<dyn Processor>>,
[INFO] [stdout]   |                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id3`
[INFO] [stdout]   --> src/dynvec.rs:99:13
[INFO] [stdout]    |
[INFO] [stdout] 99 |         let id3 = vec.add(Test(0, 0.0));
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_id3`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vec`
[INFO] [stdout]    --> src/dynvec.rs:122:13
[INFO] [stdout]     |
[INFO] [stdout] 122 |         let vec = DynVec::new::<()>();
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_vec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sim.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let mut next_state = world;
[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/sim.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let mut next_state = world;
[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: unused variable: `b`
[INFO] [stdout]   --> src/world.rs:41:21
[INFO] [stdout]    |
[INFO] [stdout] 41 |             for (a, b) in data {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/world.rs:41:21
[INFO] [stdout]    |
[INFO] [stdout] 41 |             for (a, b) in data {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/world.rs:94:21
[INFO] [stdout]    |
[INFO] [stdout] 94 |         if let Some(mut c) = self.components.get_mut(&TypeId::of::<(Entity, T)>()) {
[INFO] [stdout]    |                     ----^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/world.rs:94:21
[INFO] [stdout]    |
[INFO] [stdout] 94 |         if let Some(mut c) = self.components.get_mut(&TypeId::of::<(Entity, T)>()) {
[INFO] [stdout]    |                     ----^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/dynvec.rs:113:24
[INFO] [stdout]     |
[INFO] [stdout] 113 |         struct Struct1(u8);
[INFO] [stdout]     |                ------- ^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/dynvec.rs:114:24
[INFO] [stdout]     |
[INFO] [stdout] 114 |         struct Struct2(u8);
[INFO] [stdout]     |                ------- ^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x`, `y`, and `z` are never read
[INFO] [stdout]   --> benches/gen_ents.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct Position {
[INFO] [stdout]    |        -------- fields in this struct
[INFO] [stdout] 10 |     x: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 11 |     y: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 12 |     z: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x`, `y`, and `z` are never read
[INFO] [stdout]   --> benches/gen_ents.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Light {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 16 |     x: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 17 |     y: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 18 |     z: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `handle` and `y` are never read
[INFO] [stdout]   --> benches/gen_ents.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct Mesh {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 22 |     handle: u64,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 23 |     y: usize,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `step_by`
[INFO] [stdout]  --> benches/components.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(step_by)]
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x`, `y`, and `z` are never read
[INFO] [stdout]   --> examples/current_usage.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | struct Position {
[INFO] [stdout]    |        -------- fields in this struct
[INFO] [stdout] 9  |     x: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 10 |     y: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 11 |     z: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Position` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x`, `y`, and `z` are never read
[INFO] [stdout]   --> examples/current_usage.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Light {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 15 |     x: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 16 |     y: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 17 |     z: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `handle` and `y` are never read
[INFO] [stdout]   --> examples/current_usage.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Mesh {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 21 |     handle: u64,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 22 |     y: usize,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `amethyst_ecs` (bench "components") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "758a063e54de83edacde150a7e4543aef4cd10c332cc1cf092185aa7d1cd90ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "758a063e54de83edacde150a7e4543aef4cd10c332cc1cf092185aa7d1cd90ab", kill_on_drop: false }`
[INFO] [stdout] 758a063e54de83edacde150a7e4543aef4cd10c332cc1cf092185aa7d1cd90ab
[INFO] checking amethyst_ecs-0.1.1 against try#6a5749073f2ebf59d7740d30e50a932a85756ee7 for pr-127655
[INFO] extracting crate amethyst_ecs 0.1.1 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate amethyst_ecs 0.1.1 on toolchain 6a5749073f2ebf59d7740d30e50a932a85756ee7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate amethyst_ecs 0.1.1
[INFO] finished tweaking crates.io crate amethyst_ecs 0.1.1
[INFO] tweaked toml for crates.io crate amethyst_ecs 0.1.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 88648880ffd391d221e93708f55a3cdbdca9ae783c0477d006ea4afbcf4ea430
[INFO] running `Command { std: "docker" "start" "-a" "88648880ffd391d221e93708f55a3cdbdca9ae783c0477d006ea4afbcf4ea430", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88648880ffd391d221e93708f55a3cdbdca9ae783c0477d006ea4afbcf4ea430", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88648880ffd391d221e93708f55a3cdbdca9ae783c0477d006ea4afbcf4ea430", kill_on_drop: false }`
[INFO] [stdout] 88648880ffd391d221e93708f55a3cdbdca9ae783c0477d006ea4afbcf4ea430
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 670973a2f0674a4b6b70b45a2e3cc596d62b12b47939931d41513caef15b590d
[INFO] running `Command { std: "docker" "start" "-a" "670973a2f0674a4b6b70b45a2e3cc596d62b12b47939931d41513caef15b590d", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking amethyst_ecs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/sim.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 |     procs: Vec<Box<Processor>>,
[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]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |     procs: Vec<Box<dyn Processor>>,
[INFO] [stdout]   |                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/sim.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 |     procs: Vec<Box<Processor>>,
[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]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |     procs: Vec<Box<dyn Processor>>,
[INFO] [stdout]   |                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sim.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let mut next_state = world;
[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: unused variable: `id3`
[INFO] [stdout]   --> src/dynvec.rs:99:13
[INFO] [stdout]    |
[INFO] [stdout] 99 |         let id3 = vec.add(Test(0, 0.0));
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_id3`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vec`
[INFO] [stdout]    --> src/dynvec.rs:122:13
[INFO] [stdout]     |
[INFO] [stdout] 122 |         let vec = DynVec::new::<()>();
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_vec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sim.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let mut next_state = world;
[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: unused variable: `b`
[INFO] [stdout]   --> src/world.rs:41:21
[INFO] [stdout]    |
[INFO] [stdout] 41 |             for (a, b) in data {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/world.rs:41:21
[INFO] [stdout]    |
[INFO] [stdout] 41 |             for (a, b) in data {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/world.rs:94:21
[INFO] [stdout]    |
[INFO] [stdout] 94 |         if let Some(mut c) = self.components.get_mut(&TypeId::of::<(Entity, T)>()) {
[INFO] [stdout]    |                     ----^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/world.rs:94:21
[INFO] [stdout]    |
[INFO] [stdout] 94 |         if let Some(mut c) = self.components.get_mut(&TypeId::of::<(Entity, T)>()) {
[INFO] [stdout]    |                     ----^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/dynvec.rs:113:24
[INFO] [stdout]     |
[INFO] [stdout] 113 |         struct Struct1(u8);
[INFO] [stdout]     |                ------- ^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/dynvec.rs:114:24
[INFO] [stdout]     |
[INFO] [stdout] 114 |         struct Struct2(u8);
[INFO] [stdout]     |                ------- ^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `step_by`
[INFO] [stdout]  --> benches/components.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(step_by)]
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x`, `y`, and `z` are never read
[INFO] [stdout]   --> benches/gen_ents.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct Position {
[INFO] [stdout]    |        -------- fields in this struct
[INFO] [stdout] 10 |     x: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 11 |     y: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 12 |     z: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x`, `y`, and `z` are never read
[INFO] [stdout]   --> benches/gen_ents.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Light {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 16 |     x: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 17 |     y: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 18 |     z: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `handle` and `y` are never read
[INFO] [stdout]   --> benches/gen_ents.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct Mesh {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 22 |     handle: u64,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 23 |     y: usize,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x`, `y`, and `z` are never read
[INFO] [stdout]   --> examples/current_usage.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | struct Position {
[INFO] [stdout]    |        -------- fields in this struct
[INFO] [stdout] 9  |     x: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 10 |     y: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 11 |     z: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Position` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x`, `y`, and `z` are never read
[INFO] [stdout]   --> examples/current_usage.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Light {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 15 |     x: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 16 |     y: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 17 |     z: f32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `handle` and `y` are never read
[INFO] [stdout]   --> examples/current_usage.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Mesh {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 21 |     handle: u64,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 22 |     y: usize,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `amethyst_ecs` (bench "components") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "670973a2f0674a4b6b70b45a2e3cc596d62b12b47939931d41513caef15b590d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "670973a2f0674a4b6b70b45a2e3cc596d62b12b47939931d41513caef15b590d", kill_on_drop: false }`
[INFO] [stdout] 670973a2f0674a4b6b70b45a2e3cc596d62b12b47939931d41513caef15b590d
