[INFO] cloning repository https://github.com/qfeys/LD41 [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/qfeys/LD41" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqfeys%2FLD41", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqfeys%2FLD41'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 0aa8cb7d48a6fb0fb8f91e58004fe94d373586f7 [INFO] checking qfeys/LD41 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqfeys%2FLD41" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/qfeys/LD41 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/qfeys/LD41 [INFO] finished tweaking git repo https://github.com/qfeys/LD41 [INFO] tweaked toml for git repo https://github.com/qfeys/LD41 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/qfeys/LD41 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded pistoncore-glutin_window v0.45.3 [INFO] [stderr] Downloaded quote v0.5.1 [INFO] [stderr] Downloaded proc-macro2 v0.3.6 [INFO] [stderr] Downloaded pistoncore-input v0.20.0 [INFO] [stderr] Downloaded pistoncore-window v0.31.0 [INFO] [stderr] Downloaded serde_derive_internals v0.23.1 [INFO] [stderr] Downloaded gleam v0.4.34 [INFO] [stderr] Downloaded unreachable v0.1.1 [INFO] [stderr] Downloaded console v0.6.1 [INFO] [stderr] Downloaded clicolors-control v0.2.0 [INFO] [stderr] Downloaded regex-syntax v0.5.5 [INFO] [stderr] Downloaded piston2d-opengl_graphics v0.52.1 [INFO] [stderr] Downloaded clock_ticks v0.1.1 [INFO] [stderr] Downloaded stable_deref_trait v1.0.0 [INFO] [stderr] Downloaded smallvec v0.6.0 [INFO] [stderr] Downloaded parking_lot_core v0.2.13 [INFO] [stderr] Downloaded parking_lot v0.5.4 [INFO] [stderr] Downloaded pistoncore-event_loop v0.36.0 [INFO] [stderr] Downloaded piston v0.36.0 [INFO] [stderr] Downloaded color_quant v1.0.0 [INFO] [stderr] 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"ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1a51f8eb2977d5fbc706dbd3d831a9e8810060c5623c35f4897a2b5783cda697 [INFO] running `Command { std: "docker" "start" "-a" "1a51f8eb2977d5fbc706dbd3d831a9e8810060c5623c35f4897a2b5783cda697", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1a51f8eb2977d5fbc706dbd3d831a9e8810060c5623c35f4897a2b5783cda697", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1a51f8eb2977d5fbc706dbd3d831a9e8810060c5623c35f4897a2b5783cda697", kill_on_drop: false }` [INFO] [stdout] 1a51f8eb2977d5fbc706dbd3d831a9e8810060c5623c35f4897a2b5783cda697 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b62f17aac438e947960b2bd151c25086ca48447f02efa0f8275a6b880ee9aec1 [INFO] running `Command { std: "docker" "start" "-a" "b62f17aac438e947960b2bd151c25086ca48447f02efa0f8275a6b880ee9aec1", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.40 [INFO] [stderr] Checking lazy_static v1.0.0 [INFO] [stderr] Compiling bitflags v1.0.1 [INFO] [stderr] Compiling cfg-if v0.1.2 [INFO] [stderr] Compiling cc v1.0.10 [INFO] [stderr] Compiling khronos_api v2.2.0 [INFO] [stderr] Checking num-traits v0.2.2 [INFO] [stderr] Checking nodrop v0.1.12 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking byteorder v1.2.2 [INFO] [stderr] Checking scopeguard v0.3.3 [INFO] [stderr] Checking token_store v0.1.2 [INFO] [stderr] Compiling proc-macro2 v0.3.6 [INFO] [stderr] Checking crossbeam-utils v0.2.2 [INFO] [stderr] Checking piston-viewport v0.3.0 [INFO] [stderr] Compiling log v0.4.1 [INFO] [stderr] Checking memoffset v0.2.1 [INFO] [stderr] Compiling pkg-config v0.3.9 [INFO] [stderr] Compiling rayon-core v1.4.0 [INFO] [stderr] Checking adler32 v1.0.2 [INFO] [stderr] Checking shader_version v0.3.0 [INFO] [stderr] Checking arrayvec v0.4.7 [INFO] [stderr] Checking serde v1.0.41 [INFO] [stderr] Checking remove_dir_all v0.5.1 [INFO] [stderr] Compiling xml-rs v0.7.0 [INFO] [stderr] Compiling log v0.3.9 [INFO] [stderr] Checking unreachable v0.1.1 [INFO] [stderr] Checking either v1.5.0 [INFO] [stderr] Checking deflate v0.7.18 [INFO] [stderr] Checking stb_truetype v0.2.2 [INFO] [stderr] Checking inflate v0.3.4 [INFO] [stderr] Checking unreachable v1.0.0 [INFO] [stderr] Checking rand v0.4.2 [INFO] [stderr] Checking memmap v0.6.2 [INFO] [stderr] Checking num_cpus v1.8.0 [INFO] [stderr] Checking shared_library v0.1.8 [INFO] [stderr] Checking memchr v2.0.1 [INFO] [stderr] Checking color_quant v1.0.0 [INFO] [stderr] Checking stable_deref_trait v1.0.0 [INFO] [stderr] Compiling quote v0.5.1 [INFO] [stderr] Compiling regex v0.2.10 [INFO] [stderr] Checking percent-encoding v1.0.1 [INFO] [stderr] Checking smallvec v0.6.0 [INFO] [stderr] Compiling syn v0.13.1 [INFO] [stderr] Checking gif v0.9.2 [INFO] [stderr] Checking crossbeam-epoch v0.3.1 [INFO] [stderr] Checking owning_ref v0.3.3 [INFO] [stderr] Checking osmesa-sys v0.1.2 [INFO] [stderr] Compiling x11-dl v2.17.5 [INFO] [stderr] Checking aho-corasick v0.6.4 [INFO] [stderr] Checking regex-syntax v0.5.5 [INFO] [stderr] Checking num-traits v0.1.43 [INFO] [stderr] Checking num-integer v0.1.36 [INFO] [stderr] Checking crossbeam-deque v0.2.0 [INFO] [stderr] Checking tempfile v3.0.1 [INFO] [stderr] Checking ordered-float v0.5.0 [INFO] [stderr] Checking enum_primitive v0.1.1 [INFO] [stderr] Checking parking_lot_core v0.2.13 [INFO] [stderr] Compiling wayland-scanner v0.12.5 [INFO] [stderr] Compiling gl_generator v0.9.0 [INFO] [stderr] Compiling gl_generator v0.8.0 [INFO] [stderr] Checking rusttype v0.4.3 [INFO] [stderr] Checking thread_local v0.3.5 [INFO] [stderr] Checking num-iter v0.1.35 [INFO] [stderr] Checking num-rational v0.1.42 [INFO] [stderr] Checking vecmath v0.3.1 [INFO] [stderr] Checking png v0.11.0 [INFO] [stderr] Checking lazy_static v0.2.11 [INFO] [stderr] Checking read_color v1.0.0 [INFO] [stderr] Checking piston-texture v0.6.0 [INFO] [stderr] Checking fnv v1.0.6 [INFO] [stderr] Compiling libloading v0.5.0 [INFO] [stderr] Checking rayon v1.0.1 [INFO] [stderr] Checking interpolation v0.1.0 [INFO] [stderr] Checking clicolors-control v0.2.0 [INFO] [stderr] Checking parking_lot v0.5.4 [INFO] [stderr] Checking termios v0.2.2 [INFO] [stderr] Checking piston-shaders_graphics2d v0.3.1 [INFO] [stderr] Checking piston2d-graphics v0.26.0 [INFO] [stderr] Checking unicode-width v0.1.4 [INFO] [stderr] Checking clock_ticks v0.1.1 [INFO] [stderr] Checking rand v0.3.22 [INFO] [stderr] Checking hprof v0.1.3 [INFO] [stderr] Compiling wayland-client v0.12.5 [INFO] [stderr] Compiling wayland-protocols v0.12.5 [INFO] [stderr] Compiling gl v0.10.0 [INFO] [stderr] Compiling glutin v0.12.2 [INFO] [stderr] Checking dlib v0.4.1 [INFO] [stderr] Checking wayland-sys v0.12.5 [INFO] [stderr] Compiling serde_derive_internals v0.23.1 [INFO] [stderr] Checking jpeg-decoder v0.1.14 [INFO] [stderr] Compiling serde_derive v1.0.41 [INFO] [stderr] Checking wayland-kbd v0.13.1 [INFO] [stderr] Checking image v0.18.0 [INFO] [stderr] Checking console v0.6.1 [INFO] [stderr] Checking piston2d-opengl_graphics v0.52.1 [INFO] [stderr] Checking wayland-window v0.13.3 [INFO] [stderr] Checking winit v0.10.0 [INFO] [stderr] Checking pistoncore-input v0.20.0 [INFO] [stderr] Checking pistoncore-window v0.31.0 [INFO] [stderr] Checking pistoncore-event_loop v0.36.0 [INFO] [stderr] Checking pistoncore-glutin_window v0.45.3 [INFO] [stderr] Checking piston v0.36.0 [INFO] [stderr] Checking LD41 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::f64::*` [INFO] [stdout] --> src/drone/mod.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::f64::*; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `unit_type` should have an upper camel case name [INFO] [stdout] --> src/drone/mod.rs:256:10 [INFO] [stdout] | [INFO] [stdout] 256 | pub enum unit_type { [INFO] [stdout] | ^^^^^^^^^ help: convert the identifier to upper camel case: `UnitType` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `GlGraphics` is imported redundantly [INFO] [stdout] --> src/map.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use opengl_graphics::GlGraphics; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] 4 | use piston::input::*; [INFO] [stdout] 5 | use super::*; [INFO] [stdout] | -------- the item `GlGraphics` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::f64::*` [INFO] [stdout] --> src/drone/mod.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::f64::*; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred [INFO] [stdout] --> src/drone/mod.rs:11:46 [INFO] [stdout] | [INFO] [stdout] 11 | static OBJECT_COUNTER: AtomicUsize = atomic::ATOMIC_USIZE_INIT; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] help: replace the use of the deprecated constant [INFO] [stdout] | [INFO] [stdout] 11 | static OBJECT_COUNTER: AtomicUsize = atomic::AtomicUsize::new(0); [INFO] [stdout] | ~~~~~~~~~~~~~~~~~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type `unit_type` should have an upper camel case name [INFO] [stdout] --> src/drone/mod.rs:256:10 [INFO] [stdout] | [INFO] [stdout] 256 | pub enum unit_type { [INFO] [stdout] | ^^^^^^^^^ help: convert the identifier to upper camel case: `UnitType` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `GlGraphics` is imported redundantly [INFO] [stdout] --> src/map.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use opengl_graphics::GlGraphics; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] 4 | use piston::input::*; [INFO] [stdout] 5 | use super::*; [INFO] [stdout] | -------- the item `GlGraphics` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred [INFO] [stdout] --> src/drone/mod.rs:11:46 [INFO] [stdout] | [INFO] [stdout] 11 | static OBJECT_COUNTER: AtomicUsize = atomic::ATOMIC_USIZE_INIT; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] help: replace the use of the deprecated constant [INFO] [stdout] | [INFO] [stdout] 11 | static OBJECT_COUNTER: AtomicUsize = atomic::AtomicUsize::new(0); [INFO] [stdout] | ~~~~~~~~~~~~~~~~~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/map.rs:90:17 [INFO] [stdout] | [INFO] [stdout] 90 | let mut total = ch_d.inhabitants.len(); [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/main.rs:201:13 [INFO] [stdout] | [INFO] [stdout] 201 | for mut d in &mut self.drones { [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/main.rs:213:13 [INFO] [stdout] | [INFO] [stdout] 213 | for mut ai in &mut self.ais{ [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/main.rs:219:13 [INFO] [stdout] | [INFO] [stdout] 219 | for mut b in &mut self.bases { [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/main.rs:239:13 [INFO] [stdout] | [INFO] [stdout] 239 | for mut d in &mut self.drones { [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/main.rs:253:13 [INFO] [stdout] | [INFO] [stdout] 253 | for mut d in &mut self.drones { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Evade` is never constructed [INFO] [stdout] --> src/drone/mod.rs:269:5 [INFO] [stdout] | [INFO] [stdout] 262 | enum Behaviour { [INFO] [stdout] | --------- variant in this enum [INFO] [stdout] ... [INFO] [stdout] 269 | Evade(usize, Pos, Box), [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Behaviour` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/drone/mod.rs:157:25 [INFO] [stdout] | [INFO] [stdout] 157 | / ::std::mem::replace( [INFO] [stdout] 158 | | &mut self.behaviour, [INFO] [stdout] 159 | | Behaviour::Persue(closest.0, closest.2, Box::new(old_behafiour)), [INFO] [stdout] 160 | | ); [INFO] [stdout] | |_________________________^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 157 | let _ = ::std::mem::replace( [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/map.rs:90:17 [INFO] [stdout] | [INFO] [stdout] 90 | let mut total = ch_d.inhabitants.len(); [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: 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:201:13 [INFO] [stdout] | [INFO] [stdout] 201 | for mut d in &mut self.drones { [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/main.rs:213:13 [INFO] [stdout] | [INFO] [stdout] 213 | for mut ai in &mut self.ais{ [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/main.rs:219:13 [INFO] [stdout] | [INFO] [stdout] 219 | for mut b in &mut self.bases { [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/main.rs:239:13 [INFO] [stdout] | [INFO] [stdout] 239 | for mut d in &mut self.drones { [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/main.rs:253:13 [INFO] [stdout] | [INFO] [stdout] 253 | for mut d in &mut self.drones { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Evade` is never constructed [INFO] [stdout] --> src/drone/mod.rs:269:5 [INFO] [stdout] | [INFO] [stdout] 262 | enum Behaviour { [INFO] [stdout] | --------- variant in this enum [INFO] [stdout] ... [INFO] [stdout] 269 | Evade(usize, Pos, Box), [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Behaviour` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/drone/mod.rs:157:25 [INFO] [stdout] | [INFO] [stdout] 157 | / ::std::mem::replace( [INFO] [stdout] 158 | | &mut self.behaviour, [INFO] [stdout] 159 | | Behaviour::Persue(closest.0, closest.2, Box::new(old_behafiour)), [INFO] [stdout] 160 | | ); [INFO] [stdout] | |_________________________^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 157 | let _ = ::std::mem::replace( [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.15s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.13.1 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1` [INFO] running `Command { std: "docker" "inspect" "b62f17aac438e947960b2bd151c25086ca48447f02efa0f8275a6b880ee9aec1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b62f17aac438e947960b2bd151c25086ca48447f02efa0f8275a6b880ee9aec1", kill_on_drop: false }` [INFO] [stdout] b62f17aac438e947960b2bd151c25086ca48447f02efa0f8275a6b880ee9aec1