[INFO] cloning repository https://github.com/Niwo1493/Rust-Audio-Visualizer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Niwo1493/Rust-Audio-Visualizer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNiwo1493%2FRust-Audio-Visualizer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNiwo1493%2FRust-Audio-Visualizer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d52bf2e59a3f87c29b4819aa5bc457f52367ec30
[INFO] testing Niwo1493/Rust-Audio-Visualizer against beta-2020-10-09 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNiwo1493%2FRust-Audio-Visualizer" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Niwo1493/Rust-Audio-Visualizer on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Niwo1493/Rust-Audio-Visualizer
[INFO] finished tweaking git repo https://github.com/Niwo1493/Rust-Audio-Visualizer
[INFO] tweaked toml for git repo https://github.com/Niwo1493/Rust-Audio-Visualizer written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/Niwo1493/Rust-Audio-Visualizer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 635bd6cf6b89dd9b8d74f2e9d516de8a9d07371e43655763499a127b37744c92
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "635bd6cf6b89dd9b8d74f2e9d516de8a9d07371e43655763499a127b37744c92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "635bd6cf6b89dd9b8d74f2e9d516de8a9d07371e43655763499a127b37744c92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "635bd6cf6b89dd9b8d74f2e9d516de8a9d07371e43655763499a127b37744c92", kill_on_drop: false }`
[INFO] [stdout] 635bd6cf6b89dd9b8d74f2e9d516de8a9d07371e43655763499a127b37744c92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 601d8540ead3182fece32e9c12ee6ef63d83f5eb8f42dbd52fda6042a97f6c55
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "601d8540ead3182fece32e9c12ee6ef63d83f5eb8f42dbd52fda6042a97f6c55", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling cc v1.0.53
[INFO] [stderr]    Compiling proc-macro2 v1.0.13
[INFO] [stderr]    Compiling syn v1.0.22
[INFO] [stderr]    Compiling smallvec v1.4.0
[INFO] [stderr]    Compiling gimli v0.21.0
[INFO] [stderr]    Compiling instant v0.1.4
[INFO] [stderr]    Compiling object v0.19.0
[INFO] [stderr]    Compiling takeable-option v0.5.0
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling stb_truetype v0.3.1
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling gl_generator v0.13.1
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]    Compiling rusttype v0.8.3
[INFO] [stderr]    Compiling dft v0.5.5
[INFO] [stderr]    Compiling rusttype v0.7.9
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling minimp3-sys v0.3.2
[INFO] [stderr]    Compiling andrew v0.2.1
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.34
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling raw-window-handle v0.3.3
[INFO] [stderr]    Compiling shared_library v0.1.9
[INFO] [stderr]    Compiling slice-deque v0.3.0
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.6
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.4
[INFO] [stderr]    Compiling glium v0.27.0
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling osmesa-sys v0.1.2
[INFO] [stderr]    Compiling dlib v0.4.1
[INFO] [stderr]    Compiling minimp3 v0.3.5
[INFO] [stderr]    Compiling wayland-sys v0.23.6
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling addr2line v0.12.1
[INFO] [stderr]    Compiling backtrace v0.3.48
[INFO] [stderr]    Compiling wayland-commons v0.23.6
[INFO] [stderr]    Compiling calloop v0.4.4
[INFO] [stderr]    Compiling wayland-client v0.23.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling wayland-protocols v0.23.6
[INFO] [stderr]    Compiling thiserror v1.0.20
[INFO] [stderr]    Compiling cpal v0.11.0
[INFO] [stderr]    Compiling rodio v0.11.0
[INFO] [stderr]    Compiling smithay-client-toolkit v0.6.6
[INFO] [stderr]    Compiling winit v0.22.2
[INFO] [stderr]    Compiling glutin v0.24.0
[INFO] [stderr]    Compiling audio_visualizer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::drawable::Drawable`
[INFO] [stdout]   --> src/window.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::drawable::Drawable;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc::Receiver`
[INFO] [stdout]  --> src/visualizer.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::mpsc::Receiver;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc::Receiver`
[INFO] [stdout]  --> src/frequency_bars.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::sync::mpsc::Receiver;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc::Receiver`
[INFO] [stdout]  --> src/oscilloscope.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::mpsc::Receiver;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::line::Line`
[INFO] [stdout]  --> src/waveform.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::line::Line;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc::Receiver`
[INFO] [stdout]  --> src/waveform.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::mpsc::Receiver;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `sum` is assigned to, but never used
[INFO] [stdout]    --> src/waveform.rs:106:17
[INFO] [stdout]     |
[INFO] [stdout] 106 |             let mut sum = 0.0;
[INFO] [stdout]     |                 ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]     = note: consider using `_sum` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sum` is never read
[INFO] [stdout]    --> src/waveform.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |             sum /= AVG_COUNT as f32;
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_width`
[INFO] [stdout]   --> src/rect.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn set_width(&mut self, width: f32){
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_x`
[INFO] [stdout]   --> src/rect.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn set_x(&mut self, x: f32){
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_x_start`
[INFO] [stdout]   --> src/line.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn set_x_start(&mut self, x_start: f32){
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_x_end`
[INFO] [stdout]   --> src/line.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn set_x_end(&mut self, x_end: f32){
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/audio_management.rs:36:21
[INFO] [stdout]    |
[INFO] [stdout] 36 |                     self.value_sender.send(elm);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `valueVec` should have a snake case name
[INFO] [stdout]   --> src/oscilloscope.rs:69:17
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let mut valueVec = value_slices.0.to_vec();
[INFO] [stdout]    |                 ^^^^^^^^ help: convert the identifier to snake case: `value_vec`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `valueVec` should have a snake case name
[INFO] [stdout]   --> src/waveform.rs:71:17
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut valueVec = value_slices.0.to_vec();
[INFO] [stdout]    |                 ^^^^^^^^ help: convert the identifier to snake case: `value_vec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 19s
[INFO] running `Command { std: "docker" "inspect" "601d8540ead3182fece32e9c12ee6ef63d83f5eb8f42dbd52fda6042a97f6c55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "601d8540ead3182fece32e9c12ee6ef63d83f5eb8f42dbd52fda6042a97f6c55", kill_on_drop: false }`
[INFO] [stdout] 601d8540ead3182fece32e9c12ee6ef63d83f5eb8f42dbd52fda6042a97f6c55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75445afa3a5a4e46687ed03a09bf30f99ef10263b72645369a3217ed0a7bb0f5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "75445afa3a5a4e46687ed03a09bf30f99ef10263b72645369a3217ed0a7bb0f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling audio_visualizer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::drawable::Drawable`
[INFO] [stdout]   --> src/window.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::drawable::Drawable;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc::Receiver`
[INFO] [stdout]  --> src/visualizer.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::mpsc::Receiver;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc::Receiver`
[INFO] [stdout]  --> src/frequency_bars.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::sync::mpsc::Receiver;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc::Receiver`
[INFO] [stdout]  --> src/oscilloscope.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::mpsc::Receiver;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::line::Line`
[INFO] [stdout]  --> src/waveform.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::line::Line;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc::Receiver`
[INFO] [stdout]  --> src/waveform.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::mpsc::Receiver;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `sum` is assigned to, but never used
[INFO] [stdout]    --> src/waveform.rs:106:17
[INFO] [stdout]     |
[INFO] [stdout] 106 |             let mut sum = 0.0;
[INFO] [stdout]     |                 ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]     = note: consider using `_sum` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sum` is never read
[INFO] [stdout]    --> src/waveform.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |             sum /= AVG_COUNT as f32;
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_width`
[INFO] [stdout]   --> src/rect.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn set_width(&mut self, width: f32){
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_x`
[INFO] [stdout]   --> src/rect.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn set_x(&mut self, x: f32){
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_x_start`
[INFO] [stdout]   --> src/line.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn set_x_start(&mut self, x_start: f32){
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_x_end`
[INFO] [stdout]   --> src/line.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn set_x_end(&mut self, x_end: f32){
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/audio_management.rs:36:21
[INFO] [stdout]    |
[INFO] [stdout] 36 |                     self.value_sender.send(elm);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `valueVec` should have a snake case name
[INFO] [stdout]   --> src/oscilloscope.rs:69:17
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let mut valueVec = value_slices.0.to_vec();
[INFO] [stdout]    |                 ^^^^^^^^ help: convert the identifier to snake case: `value_vec`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `valueVec` should have a snake case name
[INFO] [stdout]   --> src/waveform.rs:71:17
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut valueVec = value_slices.0.to_vec();
[INFO] [stdout]    |                 ^^^^^^^^ help: convert the identifier to snake case: `value_vec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "75445afa3a5a4e46687ed03a09bf30f99ef10263b72645369a3217ed0a7bb0f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75445afa3a5a4e46687ed03a09bf30f99ef10263b72645369a3217ed0a7bb0f5", kill_on_drop: false }`
[INFO] [stdout] 75445afa3a5a4e46687ed03a09bf30f99ef10263b72645369a3217ed0a7bb0f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 211245e326de5bc5033474f2bb2260638e9b41a855ec058490f9071f654d9bd1
[INFO] running `Command { std: "docker" "start" "-a" "211245e326de5bc5033474f2bb2260638e9b41a855ec058490f9071f654d9bd1", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `crate::drawable::Drawable`
[INFO] [stderr]   --> src/window.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use crate::drawable::Drawable;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc::Receiver`
[INFO] [stderr]  --> src/visualizer.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::sync::mpsc::Receiver;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc::Receiver`
[INFO] [stderr]  --> src/frequency_bars.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::sync::mpsc::Receiver;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc::Receiver`
[INFO] [stderr]  --> src/oscilloscope.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::sync::mpsc::Receiver;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::line::Line`
[INFO] [stderr]  --> src/waveform.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::line::Line;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc::Receiver`
[INFO] [stderr]  --> src/waveform.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::sync::mpsc::Receiver;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `sum` is assigned to, but never used
[INFO] [stderr]    --> src/waveform.rs:106:17
[INFO] [stderr]     |
[INFO] [stderr] 106 |             let mut sum = 0.0;
[INFO] [stderr]     |                 ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]     = note: consider using `_sum` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `sum` is never read
[INFO] [stderr]    --> src/waveform.rs:112:13
[INFO] [stderr]     |
[INFO] [stderr] 112 |             sum /= AVG_COUNT as f32;
[INFO] [stderr]     |             ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `set_width`
[INFO] [stderr]   --> src/rect.rs:21:12
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn set_width(&mut self, width: f32){
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `set_x`
[INFO] [stderr]   --> src/rect.rs:25:12
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn set_x(&mut self, x: f32){
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `set_x_start`
[INFO] [stderr]   --> src/line.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn set_x_start(&mut self, x_start: f32){
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `set_x_end`
[INFO] [stderr]   --> src/line.rs:25:12
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn set_x_end(&mut self, x_end: f32){
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/audio_management.rs:36:21
[INFO] [stderr]    |
[INFO] [stderr] 36 |                     self.value_sender.send(elm);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: variable `valueVec` should have a snake case name
[INFO] [stderr]   --> src/oscilloscope.rs:69:17
[INFO] [stderr]    |
[INFO] [stderr] 69 |         let mut valueVec = value_slices.0.to_vec();
[INFO] [stderr]    |                 ^^^^^^^^ help: convert the identifier to snake case: `value_vec`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `valueVec` should have a snake case name
[INFO] [stderr]   --> src/waveform.rs:71:17
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let mut valueVec = value_slices.0.to_vec();
[INFO] [stderr]    |                 ^^^^^^^^ help: convert the identifier to snake case: `value_vec`
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/audio_visualizer-5a9f9e1987afcf3d
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "211245e326de5bc5033474f2bb2260638e9b41a855ec058490f9071f654d9bd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "211245e326de5bc5033474f2bb2260638e9b41a855ec058490f9071f654d9bd1", kill_on_drop: false }`
[INFO] [stdout] 211245e326de5bc5033474f2bb2260638e9b41a855ec058490f9071f654d9bd1
