[INFO] cloning repository https://github.com/DasEtwas/arduino_audio_stream
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DasEtwas/arduino_audio_stream" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDasEtwas%2Farduino_audio_stream", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDasEtwas%2Farduino_audio_stream'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4d0f4bf98bbf9c9ad56c02fd2ea904fd07e3fb39
[INFO] checking DasEtwas/arduino_audio_stream against master#9fa580b1175018b0a276b0bc68f9827a106f7260 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDasEtwas%2Farduino_audio_stream" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DasEtwas/arduino_audio_stream on toolchain 9fa580b1175018b0a276b0bc68f9827a106f7260
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DasEtwas/arduino_audio_stream
[INFO] finished tweaking git repo https://github.com/DasEtwas/arduino_audio_stream
[INFO] tweaked toml for git repo https://github.com/DasEtwas/arduino_audio_stream written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/DasEtwas/arduino_audio_stream already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--no-deps" "--format-version=1", 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] 83e961032ec438408c63768e6253e556b1a71e57ac001309ad3c57a33b702471
[INFO] running `Command { std: "docker" "start" "-a" "83e961032ec438408c63768e6253e556b1a71e57ac001309ad3c57a33b702471", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83e961032ec438408c63768e6253e556b1a71e57ac001309ad3c57a33b702471", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83e961032ec438408c63768e6253e556b1a71e57ac001309ad3c57a33b702471", kill_on_drop: false }`
[INFO] [stdout] 83e961032ec438408c63768e6253e556b1a71e57ac001309ad3c57a33b702471
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6caf5d1681ea1444b82f3fb65f4e68ad80da0210f876d6f9f7f32a294111f978
[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" "6caf5d1681ea1444b82f3fb65f4e68ad80da0210f876d6f9f7f32a294111f978", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.85
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking hound v3.4.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]     Checking serialport v4.0.0
[INFO] [stderr]     Checking arduino_audio_stream v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `yield_now`
[INFO] [stdout]  --> src/main.rs:9:33
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::thread::{sleep, spawn, yield_now};
[INFO] [stdout]   |                                 ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `yield_now`
[INFO] [stdout]  --> src/main.rs:9:33
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::thread::{sleep, spawn, yield_now};
[INFO] [stdout]   |                                 ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LPF_STRENGTH`
[INFO] [stdout]   --> src/dfpwm.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const LPF_STRENGTH: i32 = 140;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `DfpwmDecoder`
[INFO] [stdout]   --> src/dfpwm.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub struct DfpwmDecoder {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/dfpwm.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn new() -> DfpwmDecoder {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `decompress_byte`
[INFO] [stdout]   --> src/dfpwm.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn decompress_byte(&mut self, data: u8, output: &mut [i32; 8]) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decompress_byte`
[INFO] [stdout]   --> src/dfpwm.rs:95:4
[INFO] [stdout]    |
[INFO] [stdout] 95 | fn decompress_byte(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LPF_STRENGTH`
[INFO] [stdout]   --> src/dfpwm.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const LPF_STRENGTH: i32 = 140;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `DfpwmDecoder`
[INFO] [stdout]   --> src/dfpwm.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub struct DfpwmDecoder {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/dfpwm.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn new() -> DfpwmDecoder {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `decompress_byte`
[INFO] [stdout]   --> src/dfpwm.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn decompress_byte(&mut self, data: u8, output: &mut [i32; 8]) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decompress_byte`
[INFO] [stdout]   --> src/dfpwm.rs:95:4
[INFO] [stdout]    |
[INFO] [stdout] 95 | fn decompress_byte(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.53s
[INFO] running `Command { std: "docker" "inspect" "6caf5d1681ea1444b82f3fb65f4e68ad80da0210f876d6f9f7f32a294111f978", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6caf5d1681ea1444b82f3fb65f4e68ad80da0210f876d6f9f7f32a294111f978", kill_on_drop: false }`
[INFO] [stdout] 6caf5d1681ea1444b82f3fb65f4e68ad80da0210f876d6f9f7f32a294111f978