[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] building DasEtwas/arduino_audio_stream against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDasEtwas%2Farduino_audio_stream" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DasEtwas/arduino_audio_stream on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "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-6-tc1/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serialport v4.0.0
[INFO] [stderr]   Downloaded IOKit-sys v0.1.5
[INFO] [stderr]   Downloaded mach v0.1.2
[INFO] [stderr]   Downloaded CoreFoundation-sys v0.1.4
[INFO] [stderr]   Downloaded nix v0.16.1
[INFO] [stderr]   Downloaded libc v0.2.85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d8e23ddcb946daf89c9c5fe64257d6c3b4e38fefebe5d201a725f124a01a4d2
[INFO] running `Command { std: "docker" "start" "-a" "2d8e23ddcb946daf89c9c5fe64257d6c3b4e38fefebe5d201a725f124a01a4d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d8e23ddcb946daf89c9c5fe64257d6c3b4e38fefebe5d201a725f124a01a4d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d8e23ddcb946daf89c9c5fe64257d6c3b4e38fefebe5d201a725f124a01a4d2", kill_on_drop: false }`
[INFO] [stdout] 2d8e23ddcb946daf89c9c5fe64257d6c3b4e38fefebe5d201a725f124a01a4d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7dff616546171f8f396f4c60af8d4cedcac5d3105dcf4b7954702b782006254b
[INFO] running `Command { std: "docker" "start" "-a" "7dff616546171f8f396f4c60af8d4cedcac5d3105dcf4b7954702b782006254b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.85
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling hound v3.4.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling libudev v0.2.0
[INFO] [stderr]    Compiling serialport v4.0.0
[INFO] [stderr]    Compiling 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: constant `LPF_STRENGTH` is never used
[INFO] [stdout]   --> src/dfpwm.rs:13:7
[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 `DfpwmDecoder` is never constructed
[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 items `new` and `decompress_byte` are never used
[INFO] [stdout]   --> src/dfpwm.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 70 | impl DfpwmDecoder {
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] 71 |     pub fn new() -> DfpwmDecoder {
[INFO] [stdout]    |            ^^^
[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 `decompress_byte` is never used
[INFO] [stdout]   --> src/dfpwm.rs:95:4
[INFO] [stdout]    |
[INFO] [stdout] 95 | fn decompress_byte(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.51s
[INFO] running `Command { std: "docker" "inspect" "7dff616546171f8f396f4c60af8d4cedcac5d3105dcf4b7954702b782006254b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7dff616546171f8f396f4c60af8d4cedcac5d3105dcf4b7954702b782006254b", kill_on_drop: false }`
[INFO] [stdout] 7dff616546171f8f396f4c60af8d4cedcac5d3105dcf4b7954702b782006254b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4fa82bda3b5a2db92c11d4127cc60c7b45f0893c34d65c92ee957f7cdc2ee094
[INFO] running `Command { std: "docker" "start" "-a" "4fa82bda3b5a2db92c11d4127cc60c7b45f0893c34d65c92ee957f7cdc2ee094", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: constant `LPF_STRENGTH` is never used
[INFO] [stdout]   --> src/dfpwm.rs:13:7
[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 `DfpwmDecoder` is never constructed
[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 items `new` and `decompress_byte` are never used
[INFO] [stdout]   --> src/dfpwm.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 70 | impl DfpwmDecoder {
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] 71 |     pub fn new() -> DfpwmDecoder {
[INFO] [stdout]    |            ^^^
[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 `decompress_byte` is never used
[INFO] [stdout]   --> src/dfpwm.rs:95:4
[INFO] [stdout]    |
[INFO] [stdout] 95 | fn decompress_byte(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "4fa82bda3b5a2db92c11d4127cc60c7b45f0893c34d65c92ee957f7cdc2ee094", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fa82bda3b5a2db92c11d4127cc60c7b45f0893c34d65c92ee957f7cdc2ee094", kill_on_drop: false }`
[INFO] [stdout] 4fa82bda3b5a2db92c11d4127cc60c7b45f0893c34d65c92ee957f7cdc2ee094