[INFO] cloning repository https://github.com/JasonVranek/rust_robot [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JasonVranek/rust_robot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJasonVranek%2Frust_robot", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJasonVranek%2Frust_robot'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 480c922912d9398a330bc7c2e8561e2146a68192 [INFO] checking JasonVranek/rust_robot/480c922912d9398a330bc7c2e8561e2146a68192 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJasonVranek%2Frust_robot" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/JasonVranek/rust_robot on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/JasonVranek/rust_robot [INFO] finished tweaking git repo https://github.com/JasonVranek/rust_robot [INFO] tweaked toml for git repo https://github.com/JasonVranek/rust_robot written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/JasonVranek/rust_robot 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded iovec v0.1.2 [INFO] [stderr] Downloaded byteorder v1.3.1 [INFO] [stderr] Downloaded libc v0.2.48 [INFO] [stderr] Downloaded tokio-current-thread v0.1.4 [INFO] [stderr] Downloaded crossbeam v0.6.0 [INFO] [stderr] Downloaded crossbeam-epoch v0.7.1 [INFO] [stderr] Downloaded unreachable v1.0.0 [INFO] [stderr] Downloaded crossbeam-deque v0.6.3 [INFO] [stderr] Downloaded tokio-threadpool v0.1.11 [INFO] [stderr] Downloaded mio v0.6.16 [INFO] [stderr] Downloaded rand_jitter v0.1.2 [INFO] [stderr] Downloaded crossbeam-utils v0.6.5 [INFO] [stderr] Downloaded tokio-io v0.1.11 [INFO] [stderr] Downloaded tokio-reactor v0.1.8 [INFO] [stderr] Downloaded serde_json v1.0.38 [INFO] [stderr] Downloaded fuchsia-cprng v0.1.0 [INFO] [stderr] Downloaded bytes v0.4.11 [INFO] [stderr] Downloaded scopeguard v0.3.3 [INFO] [stderr] Downloaded crossbeam-channel v0.3.8 [INFO] [stderr] Downloaded tokio-sync v0.1.1 [INFO] [stderr] Downloaded parking_lot v0.7.1 [INFO] [stderr] Downloaded lock_api v0.1.5 [INFO] [stderr] Downloaded rand_os v0.1.2 [INFO] [stderr] Downloaded parking_lot_core v0.4.0 [INFO] [stderr] Downloaded tokio-uds v0.2.5 [INFO] [stderr] Downloaded lazy_static v1.2.0 [INFO] [stderr] Downloaded tokio-serde v0.3.0 [INFO] [stderr] Downloaded tokio-fs v0.1.5 [INFO] [stderr] Downloaded tokio-tcp v0.1.3 [INFO] [stderr] Downloaded smallvec v0.6.8 [INFO] [stderr] Downloaded nodrop v0.1.13 [INFO] [stderr] Downloaded arrayvec v0.4.10 [INFO] [stderr] Downloaded memoffset v0.2.1 [INFO] [stderr] Downloaded tokio-timer v0.2.10 [INFO] [stderr] Downloaded serde v1.0.87 [INFO] [stderr] Downloaded serde_derive v1.0.87 [INFO] [stderr] Downloaded tokio-serde-json v0.2.0 [INFO] [stderr] Downloaded tokio-udp v0.1.3 [INFO] [stderr] Downloaded tokio-codec v0.1.1 [INFO] [stderr] Downloaded lazycell v1.2.1 [INFO] [stderr] Downloaded num_cpus v1.9.0 [INFO] [stderr] Downloaded owning_ref v0.4.0 [INFO] [stderr] Downloaded rand_pcg v0.1.1 [INFO] [stderr] Downloaded tokio-executor v0.1.6 [INFO] [stderr] Downloaded cfg-if v0.1.6 [INFO] [stderr] Downloaded rppal v0.10.0 [INFO] [stderr] Downloaded tokio v0.1.15 [INFO] [stderr] Downloaded futures v0.1.25 [INFO] [stderr] Downloaded syn v0.15.26 [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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3f612e3ad6740ce0dc7886ec10cb657ab39b8dd06411234cdcf808f1e3e7726d [INFO] running `Command { std: "docker" "start" "-a" "3f612e3ad6740ce0dc7886ec10cb657ab39b8dd06411234cdcf808f1e3e7726d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3f612e3ad6740ce0dc7886ec10cb657ab39b8dd06411234cdcf808f1e3e7726d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3f612e3ad6740ce0dc7886ec10cb657ab39b8dd06411234cdcf808f1e3e7726d", kill_on_drop: false }` [INFO] [stdout] 3f612e3ad6740ce0dc7886ec10cb657ab39b8dd06411234cdcf808f1e3e7726d [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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 68c9dff3995c01f56044d94c063da7ce0c0c83e8e424941f97daee0cb73df716 [INFO] running `Command { std: "docker" "start" "-a" "68c9dff3995c01f56044d94c063da7ce0c0c83e8e424941f97daee0cb73df716", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.48 [INFO] [stderr] Checking cfg-if v0.1.6 [INFO] [stderr] Checking lazy_static v1.2.0 [INFO] [stderr] Checking futures v0.1.25 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling byteorder v1.3.1 [INFO] [stderr] Checking scopeguard v0.3.3 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Checking unreachable v1.0.0 [INFO] [stderr] Checking crossbeam-utils v0.6.5 [INFO] [stderr] Checking rand_jitter v0.1.2 [INFO] [stderr] Checking smallvec v0.6.8 [INFO] [stderr] Checking owning_ref v0.4.0 [INFO] [stderr] Compiling arrayvec v0.4.10 [INFO] [stderr] Checking lock_api v0.1.5 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking lazycell v1.2.1 [INFO] [stderr] Checking nodrop v0.1.13 [INFO] [stderr] Checking memoffset v0.2.1 [INFO] [stderr] Checking crossbeam-channel v0.3.8 [INFO] [stderr] Compiling serde v1.0.87 [INFO] [stderr] Compiling syn v0.15.26 [INFO] [stderr] Compiling rand_pcg v0.1.1 [INFO] [stderr] Compiling parking_lot_core v0.4.0 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking rand_os v0.1.2 [INFO] [stderr] Checking bytes v0.4.11 [INFO] [stderr] Checking num_cpus v1.9.0 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking rand v0.6.5 [INFO] [stderr] Checking rppal v0.10.0 [INFO] [stderr] Checking mio v0.6.16 [INFO] [stderr] Checking crossbeam-epoch v0.7.1 [INFO] [stderr] Checking crossbeam-deque v0.6.3 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Checking tokio-executor v0.1.6 [INFO] [stderr] Checking tokio-io v0.1.11 [INFO] [stderr] Checking tokio-serde v0.3.0 [INFO] [stderr] Checking tokio-sync v0.1.1 [INFO] [stderr] Checking tokio-current-thread v0.1.4 [INFO] [stderr] Checking tokio-timer v0.2.10 [INFO] [stderr] Checking tokio-codec v0.1.1 [INFO] [stderr] Checking parking_lot v0.7.1 [INFO] [stderr] Checking tokio-reactor v0.1.8 [INFO] [stderr] Checking crossbeam v0.6.0 [INFO] [stderr] Compiling serde_derive v1.0.87 [INFO] [stderr] Checking tokio-threadpool v0.1.11 [INFO] [stderr] Checking tokio-uds v0.2.5 [INFO] [stderr] Checking tokio-udp v0.1.3 [INFO] [stderr] Checking tokio-tcp v0.1.3 [INFO] [stderr] Checking tokio-fs v0.1.5 [INFO] [stderr] Checking tokio v0.1.15 [INFO] [stderr] Checking serde_json v1.0.38 [INFO] [stderr] Checking tokio-serde-json v0.2.0 [INFO] [stderr] Checking robot v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::thread` [INFO] [stdout] --> src/peripherals/motors.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::thread; [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/peripherals/motors.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::time::Duration; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> src/lib.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | #[macro_use] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/controller/mod.rs:39:26 [INFO] [stdout] | [INFO] [stdout] 39 | pub type AsyncTask = Box + Send>; [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 [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] 39 | pub type AsyncTask = Box + Send>; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> src/lib.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | #[macro_use] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/controller/mod.rs:39:26 [INFO] [stdout] | [INFO] [stdout] 39 | pub type AsyncTask = Box + Send>; [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 [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] 39 | pub type AsyncTask = Box + Send>; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `order_type`, `device`, and `cmd` are never read [INFO] [stdout] --> src/io/tcp_json.rs:22:2 [INFO] [stdout] | [INFO] [stdout] 21 | pub struct JsonMsg { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 22 | order_type: String, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] 23 | device: String, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 24 | cmd: u64, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `JsonMsg` 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: constant `ENA` is never used [INFO] [stdout] --> src/peripherals/motors.rs:9:7 [INFO] [stdout] | [INFO] [stdout] 9 | const ENA: u8 = 18; //PWM0, Left Motor [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `ENB` is never used [INFO] [stdout] --> src/peripherals/motors.rs:13:7 [INFO] [stdout] | [INFO] [stdout] 13 | const ENB: u8 = 19; //PWM1, Right Motor [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `L_ENC_YEL` is never used [INFO] [stdout] --> src/peripherals/motors.rs:18:7 [INFO] [stdout] | [INFO] [stdout] 18 | const L_ENC_YEL: u8 = 20; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `L_ENC_GRE` is never used [INFO] [stdout] --> src/peripherals/motors.rs:19:7 [INFO] [stdout] | [INFO] [stdout] 19 | const L_ENC_GRE: u8 = 21; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `R_ENC_YEL` is never used [INFO] [stdout] --> src/peripherals/motors.rs:21:7 [INFO] [stdout] | [INFO] [stdout] 21 | const R_ENC_YEL: u8 = 23; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `R_ENC_GRE` is never used [INFO] [stdout] --> src/peripherals/motors.rs:22:7 [INFO] [stdout] | [INFO] [stdout] 22 | const R_ENC_GRE: u8 = 24; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `order_type`, `device`, and `cmd` are never read [INFO] [stdout] --> src/io/tcp_json.rs:22:2 [INFO] [stdout] | [INFO] [stdout] 21 | pub struct JsonMsg { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 22 | order_type: String, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] 23 | device: String, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 24 | cmd: u64, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `JsonMsg` 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: constant `ENA` is never used [INFO] [stdout] --> src/peripherals/motors.rs:9:7 [INFO] [stdout] | [INFO] [stdout] 9 | const ENA: u8 = 18; //PWM0, Left Motor [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `ENB` is never used [INFO] [stdout] --> src/peripherals/motors.rs:13:7 [INFO] [stdout] | [INFO] [stdout] 13 | const ENB: u8 = 19; //PWM1, Right Motor [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `L_ENC_YEL` is never used [INFO] [stdout] --> src/peripherals/motors.rs:18:7 [INFO] [stdout] | [INFO] [stdout] 18 | const L_ENC_YEL: u8 = 20; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `L_ENC_GRE` is never used [INFO] [stdout] --> src/peripherals/motors.rs:19:7 [INFO] [stdout] | [INFO] [stdout] 19 | const L_ENC_GRE: u8 = 21; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `R_ENC_YEL` is never used [INFO] [stdout] --> src/peripherals/motors.rs:21:7 [INFO] [stdout] | [INFO] [stdout] 21 | const R_ENC_YEL: u8 = 23; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `R_ENC_GRE` is never used [INFO] [stdout] --> src/peripherals/motors.rs:22:7 [INFO] [stdout] | [INFO] [stdout] 22 | const R_ENC_GRE: u8 = 24; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/peripherals/motors.rs:182:3 [INFO] [stdout] | [INFO] [stdout] 182 | motors.stop(); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 182 | let _ = motors.stop(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 10 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `robot::io::tcp_server` [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use robot::io::tcp_server; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `robot::controller::Controller` [INFO] [stdout] --> src/main.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use robot::controller::Controller; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `robot::io::tcp_server` [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use robot::io::tcp_server; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `robot::controller::Controller` [INFO] [stdout] --> src/main.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use robot::controller::Controller; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:28:5 [INFO] [stdout] | [INFO] [stdout] 28 | motors.stop(); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 28 | let _ = motors.stop(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:28:5 [INFO] [stdout] | [INFO] [stdout] 28 | motors.stop(); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 28 | let _ = motors.stop(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.14s [INFO] running `Command { std: "docker" "inspect" "68c9dff3995c01f56044d94c063da7ce0c0c83e8e424941f97daee0cb73df716", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "68c9dff3995c01f56044d94c063da7ce0c0c83e8e424941f97daee0cb73df716", kill_on_drop: false }` [INFO] [stdout] 68c9dff3995c01f56044d94c063da7ce0c0c83e8e424941f97daee0cb73df716