[INFO] fetching crate entity-gym-rs 0.8.0...
[INFO] testing entity-gym-rs-0.8.0 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate entity-gym-rs 0.8.0 into /workspace/builds/worker-1-tc2/source
[INFO] removed /workspace/builds/worker-1-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate entity-gym-rs 0.8.0
[INFO] finished tweaking crates.io crate entity-gym-rs 0.8.0
[INFO] tweaked toml for crates.io crate entity-gym-rs 0.8.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate entity-gym-rs 0.8.0 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "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" "+b83b707f97d809763b7861afa7638871f3339a33" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 445 packages to latest compatible versions
[INFO] [stderr]       Adding bevy v0.9.1 (available: v0.16.1)
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d51c771fffc2556348292fd81309ac4a63ade0ec1b3d8f51d73a2fd6b7cdf4a0
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[INFO] running `Command { std: "docker" "inspect" "d51c771fffc2556348292fd81309ac4a63ade0ec1b3d8f51d73a2fd6b7cdf4a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d51c771fffc2556348292fd81309ac4a63ade0ec1b3d8f51d73a2fd6b7cdf4a0", kill_on_drop: false }`
[INFO] [stdout] d51c771fffc2556348292fd81309ac4a63ade0ec1b3d8f51d73a2fd6b7cdf4a0
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[INFO] [stdout] 63cc2a33792f5badd957306625a7c31e7c61772c96215d9a2b21772ec2f7919b
[INFO] running `Command { std: "docker" "start" "-a" "63cc2a33792f5badd957306625a7c31e7c61772c96215d9a2b21772ec2f7919b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling rustix v1.0.8
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[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling approx v0.4.0
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[INFO] [stderr]    Compiling byteorder v1.5.0
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[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
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[INFO] [stderr]    Compiling ndarray v0.15.6
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[INFO] [stderr]    Compiling rmpv v1.3.0
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[INFO] [stderr]    Compiling serde_derive v1.0.219
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[INFO] [stderr]    Compiling tar v0.4.44
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling nalgebra-macros v0.1.0
[INFO] [stderr]    Compiling clap_derive v3.2.25
[INFO] [stderr]    Compiling entity-gym-derive v0.2.0
[INFO] [stderr]    Compiling ragged-buffer v0.3.8
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling nalgebra v0.27.1
[INFO] [stderr]    Compiling ron v0.7.1
[INFO] [stderr]    Compiling clap v3.2.25
[INFO] [stderr]    Compiling statrs v0.15.0
[INFO] [stderr]    Compiling rogue-net v0.4.1
[INFO] [stderr]    Compiling entity-gym-rs v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/agent/mod.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/agent/mod.rs:78:5
[INFO] [stdout]    |
[INFO] [stdout] 78 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Direction` is never used
[INFO] [stdout]   --> src/agent/action.rs:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 |     enum Direction {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Thrust` is never used
[INFO] [stdout]   --> src/agent/action.rs:37:10
[INFO] [stdout]    |
[INFO] [stdout] 37 |     enum Thrust {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Move` is never constructed
[INFO] [stdout]   --> src/agent/action.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 |     struct Move {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MultiSnake` is never constructed
[INFO] [stdout]   --> src/examples/multisnake.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct MultiSnake {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Food` is never constructed
[INFO] [stdout]   --> src/examples/multisnake.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Food {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Snake` is never constructed
[INFO] [stdout]   --> src/examples/multisnake.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | struct Snake {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `observe` and `random_empty_tile` are never used
[INFO] [stdout]    --> src/examples/multisnake.rs:66:8
[INFO] [stdout]     |
[INFO] [stdout]  41 | impl MultiSnake {
[INFO] [stdout]     | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  66 |     fn observe(&self) -> Box<Observation> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 115 |     fn random_empty_tile(&mut self) -> (i32, i32) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 58.19s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nalgebra v0.27.1
[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" "63cc2a33792f5badd957306625a7c31e7c61772c96215d9a2b21772ec2f7919b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63cc2a33792f5badd957306625a7c31e7c61772c96215d9a2b21772ec2f7919b", kill_on_drop: false }`
[INFO] [stdout] 63cc2a33792f5badd957306625a7c31e7c61772c96215d9a2b21772ec2f7919b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e780c1f4d08cf2ef5de63d03cbea9efd767159b64cc65cd977650e45e9104b41
[INFO] running `Command { std: "docker" "start" "-a" "e780c1f4d08cf2ef5de63d03cbea9efd767159b64cc65cd977650e45e9104b41", kill_on_drop: false }`
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/agent/mod.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/agent/mod.rs:78:5
[INFO] [stdout]    |
[INFO] [stdout] 78 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Direction` is never used
[INFO] [stdout]   --> src/agent/action.rs:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 |     enum Direction {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Thrust` is never used
[INFO] [stdout]   --> src/agent/action.rs:37:10
[INFO] [stdout]    |
[INFO] [stdout] 37 |     enum Thrust {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Move` is never constructed
[INFO] [stdout]   --> src/agent/action.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 |     struct Move {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MultiSnake` is never constructed
[INFO] [stdout]   --> src/examples/multisnake.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct MultiSnake {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Food` is never constructed
[INFO] [stdout]   --> src/examples/multisnake.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Food {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Snake` is never constructed
[INFO] [stdout]   --> src/examples/multisnake.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | struct Snake {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `observe` and `random_empty_tile` are never used
[INFO] [stdout]    --> src/examples/multisnake.rs:66:8
[INFO] [stdout]     |
[INFO] [stdout]  41 | impl MultiSnake {
[INFO] [stdout]     | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  66 |     fn observe(&self) -> Box<Observation> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 115 |     fn random_empty_tile(&mut self) -> (i32, i32) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling entity-gym-rs v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/agent/mod.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/agent/mod.rs:78:5
[INFO] [stdout]    |
[INFO] [stdout] 78 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Direction` is never used
[INFO] [stdout]   --> src/agent/action.rs:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 |     enum Direction {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Thrust` is never used
[INFO] [stdout]   --> src/agent/action.rs:37:10
[INFO] [stdout]    |
[INFO] [stdout] 37 |     enum Thrust {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Move` is never constructed
[INFO] [stdout]   --> src/agent/action.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 |     struct Move {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MultiSnake` is never constructed
[INFO] [stdout]   --> src/examples/multisnake.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct MultiSnake {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Food` is never constructed
[INFO] [stdout]   --> src/examples/multisnake.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Food {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Snake` is never constructed
[INFO] [stdout]   --> src/examples/multisnake.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | struct Snake {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `observe` and `random_empty_tile` are never used
[INFO] [stdout]    --> src/examples/multisnake.rs:66:8
[INFO] [stdout]     |
[INFO] [stdout]  41 | impl MultiSnake {
[INFO] [stdout]     | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  66 |     fn observe(&self) -> Box<Observation> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 115 |     fn random_empty_tile(&mut self) -> (i32, i32) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.20s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nalgebra v0.27.1
[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" "e780c1f4d08cf2ef5de63d03cbea9efd767159b64cc65cd977650e45e9104b41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e780c1f4d08cf2ef5de63d03cbea9efd767159b64cc65cd977650e45e9104b41", kill_on_drop: false }`
[INFO] [stdout] e780c1f4d08cf2ef5de63d03cbea9efd767159b64cc65cd977650e45e9104b41
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fccd1b5f951f3fb068628d59bf5460e855f0aac5600b1b1850e9091009bd1614
[INFO] running `Command { std: "docker" "start" "-a" "fccd1b5f951f3fb068628d59bf5460e855f0aac5600b1b1850e9091009bd1614", kill_on_drop: false }`
[INFO] [stderr] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stderr]   --> src/agent/mod.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 |     #[must_use]
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stderr]    = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stderr]   --> src/agent/mod.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     #[must_use]
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = help: `#[must_use]` can be applied to data types, functions, unions, required trait methods, provided trait methods, inherent methods, foreign functions, and traits
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Direction` is never used
[INFO] [stderr]   --> src/agent/action.rs:29:10
[INFO] [stderr]    |
[INFO] [stderr] 29 |     enum Direction {
[INFO] [stderr]    |          ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Thrust` is never used
[INFO] [stderr]   --> src/agent/action.rs:37:10
[INFO] [stderr]    |
[INFO] [stderr] 37 |     enum Thrust {
[INFO] [stderr]    |          ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Move` is never constructed
[INFO] [stderr]   --> src/agent/action.rs:44:12
[INFO] [stderr]    |
[INFO] [stderr] 44 |     struct Move {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `MultiSnake` is never constructed
[INFO] [stderr]   --> src/examples/multisnake.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub struct MultiSnake {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Food` is never constructed
[INFO] [stderr]   --> src/examples/multisnake.rs:29:8
[INFO] [stderr]    |
[INFO] [stderr] 29 | struct Food {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Snake` is never constructed
[INFO] [stderr]   --> src/examples/multisnake.rs:36:8
[INFO] [stderr]    |
[INFO] [stderr] 36 | struct Snake {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `observe` and `random_empty_tile` are never used
[INFO] [stderr]    --> src/examples/multisnake.rs:66:8
[INFO] [stderr]     |
[INFO] [stderr]  41 | impl MultiSnake {
[INFO] [stderr]     | --------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr]  66 |     fn observe(&self) -> Box<Observation> {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 115 |     fn random_empty_tile(&mut self) -> (i32, i32) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `entity-gym-rs` (lib) generated 9 warnings (run `cargo fix --lib -p entity-gym-rs` to apply 2 suggestions)
[INFO] [stderr] warning: `entity-gym-rs` (lib test) generated 9 warnings (9 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nalgebra v0.27.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/entity_gym_rs-c59ed79ebcc4c6f7)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test agent::action::test::test_action_name ... ok
[INFO] [stdout] test agent::action::test::test_action_from_u64 ... ok
[INFO] [stdout] test agent::action::test::test_action_labels ... ok
[INFO] [stdout] test agent::featurizable::test::test_feature_names ... ok
[INFO] [stdout] test agent::featurizable::test::test_featurize ... ok
[INFO] [stdout] test agent::action::test::test_action_num_actions ... ok
[INFO] [stdout] test agent::action::test::test_round_trip ... ok
[INFO] [stdout] test agent::featurizable::test::test_name ... ok
[INFO] [stdout] test agent::featurizable::test::test_num_feats ... ok
[INFO] [stdout] test agent::action::test::test_action_to_u64 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests entity_gym_rs
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/agent/obs.rs - agent::obs::Obs (line 12) ... ok
[INFO] [stdout] test src/agent/featurizable.rs - agent::featurizable::Featurizable (line 6) ... ok
[INFO] [stdout] test src/agent/obs.rs - agent::obs::Obs::metric (line 109) ... ok
[INFO] [stdout] test src/agent/action.rs - agent::action::Action (line 4) ... ok
[INFO] [stdout] test src/agent/obs.rs - agent::obs::Obs (line 20) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.97s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fccd1b5f951f3fb068628d59bf5460e855f0aac5600b1b1850e9091009bd1614", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fccd1b5f951f3fb068628d59bf5460e855f0aac5600b1b1850e9091009bd1614", kill_on_drop: false }`
[INFO] [stdout] fccd1b5f951f3fb068628d59bf5460e855f0aac5600b1b1850e9091009bd1614