[INFO] fetching crate amethyst_assets 0.15.3...
[INFO] checking amethyst_assets-0.15.3 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] extracting crate amethyst_assets 0.15.3 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate amethyst_assets 0.15.3 on toolchain 30f74ff0dc4d66debc8b50724c446f817e5f75f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate amethyst_assets 0.15.3
[INFO] finished tweaking crates.io crate amethyst_assets 0.15.3
[INFO] tweaked toml for crates.io crate amethyst_assets 0.15.3 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate amethyst_assets 0.15.3 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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fabba258583a0144444b054095c273029cf898a8dab4955f677f6f445c85bbd9
[INFO] running `Command { std: "docker" "start" "-a" "fabba258583a0144444b054095c273029cf898a8dab4955f677f6f445c85bbd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fabba258583a0144444b054095c273029cf898a8dab4955f677f6f445c85bbd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fabba258583a0144444b054095c273029cf898a8dab4955f677f6f445c85bbd9", kill_on_drop: false }`
[INFO] [stdout] fabba258583a0144444b054095c273029cf898a8dab4955f677f6f445c85bbd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 40757498fca79f1285f92cb4264037cff860c31df46b72d6ec8dad8bfb706f52
[INFO] running `Command { std: "docker" "start" "-a" "40757498fca79f1285f92cb4264037cff860c31df46b72d6ec8dad8bfb706f52", kill_on_drop: false }`
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[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]     Checking amethyst_error v0.15.3
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[INFO] [stderr]    Compiling proc_macro_roids v0.7.0
[INFO] [stderr]    Compiling shred-derive v0.6.2
[INFO] [stderr]    Compiling specs-derive v0.4.1
[INFO] [stderr]    Compiling getset v0.0.9
[INFO] [stderr]    Compiling inventory-impl v0.1.8
[INFO] [stderr]    Compiling derivative v2.1.1
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[INFO] [stderr]    Compiling ctor v0.1.15
[INFO] [stderr]    Compiling derive-new v0.5.8
[INFO] [stderr]    Compiling alga_derive v0.9.2
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[INFO] [stderr]    Compiling err-derive v0.2.4
[INFO] [stderr]     Checking specs v0.16.1
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[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
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[INFO] [stderr]     Checking amethyst_core v0.15.3
[INFO] [stderr]     Checking amethyst_assets v0.15.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `serde_json`
[INFO] [stdout]    --> src/dyn_format.rs:279:9
[INFO] [stdout]     |
[INFO] [stdout] 279 |     use serde_json;
[INFO] [stdout]     |         ^^^^^^^^^^ no external crate `serde_json`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde` is imported redundantly
[INFO] [stdout]    --> src/dyn_format.rs:278:9
[INFO] [stdout]     |
[INFO] [stdout] 278 |     use serde;
[INFO] [stdout]     |         ^^^^^ the item `serde` is already defined by prelude
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `World` is imported redundantly
[INFO] [stdout]    --> src/prefab/mod.rs:473:32
[INFO] [stdout]     |
[INFO] [stdout] 473 |         ecs::{Builder, RunNow, World, WorldExt},
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 479 |     use super::*;
[INFO] [stdout]     |         -------- the item `World` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Loader` is imported redundantly
[INFO] [stdout]    --> src/prefab/mod.rs:477:9
[INFO] [stdout]     |
[INFO] [stdout] 477 |     use crate::Loader;
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout] 478 |
[INFO] [stdout] 479 |     use super::*;
[INFO] [stdout]     |         -------- the item `Loader` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/dyn_format.rs:107:26
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let mut erased = erased_serde::Deserializer::erase(deserializer);
[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: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:10:23
[INFO] [stdout]     |
[INFO] [stdout] 10  | #![warn(missing_docs, rust_2018_idioms, rust_2018_compatibility)]
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` implied by `#[warn(rust_2018_idioms)]`
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let mut erased = <dyn erased_serde::Deserializer>::erase(deserializer);
[INFO] [stdout]     |                          ++++                           +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/dyn_format.rs:107:26
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let mut erased = erased_serde::Deserializer::erase(deserializer);
[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: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:10:23
[INFO] [stdout]     |
[INFO] [stdout] 10  | #![warn(missing_docs, rust_2018_idioms, rust_2018_compatibility)]
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` implied by `#[warn(rust_2018_idioms)]`
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let mut erased = <dyn erased_serde::Deserializer>::erase(deserializer);
[INFO] [stdout]     |                          ++++                           +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `amethyst_assets` (lib test) due to 2 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "40757498fca79f1285f92cb4264037cff860c31df46b72d6ec8dad8bfb706f52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40757498fca79f1285f92cb4264037cff860c31df46b72d6ec8dad8bfb706f52", kill_on_drop: false }`
[INFO] [stdout] 40757498fca79f1285f92cb4264037cff860c31df46b72d6ec8dad8bfb706f52
