[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 try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDasEtwas%2Farduino_audio_stream" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DasEtwas/arduino_audio_stream on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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-15/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libudev v0.2.0
[INFO] [stderr]   Downloaded libc v0.2.85
[INFO] [stderr]   Downloaded serialport v4.0.0
[INFO] [stderr]   Downloaded CoreFoundation-sys v0.1.4
[INFO] [stderr]   Downloaded mach v0.1.2
[INFO] [stderr]   Downloaded nix v0.16.1
[INFO] [stderr]   Downloaded IOKit-sys v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc9238a12cc7d688204e4ae13fa299c2e8cd2402aba0144784dd6cdb364118ad
[INFO] running `Command { std: "docker" "start" "-a" "dc9238a12cc7d688204e4ae13fa299c2e8cd2402aba0144784dd6cdb364118ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc9238a12cc7d688204e4ae13fa299c2e8cd2402aba0144784dd6cdb364118ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc9238a12cc7d688204e4ae13fa299c2e8cd2402aba0144784dd6cdb364118ad", kill_on_drop: false }`
[INFO] [stdout] dc9238a12cc7d688204e4ae13fa299c2e8cd2402aba0144784dd6cdb364118ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79932bc2d56a5bde42889e0f69c481b6ad30f715c28d38cf297a6e18e6fe2dc6
[INFO] running `Command { std: "docker" "start" "-a" "79932bc2d56a5bde42889e0f69c481b6ad30f715c28d38cf297a6e18e6fe2dc6", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] note: Switching to Edition 2021 will enable the use of the version 2 feature resolver in Cargo.
[INFO] [stderr] This may cause some dependencies to be built with fewer features enabled than previously.
[INFO] [stderr] More information about the resolver changes may be found at https://doc.rust-lang.org/nightly/edition-guide/rust-2021/default-cargo-resolver.html
[INFO] [stderr] When building the following dependencies, the given features will no longer be used:
[INFO] [stderr] 
[INFO] [stderr]   libc v0.2.85: use_std
[INFO] [stderr] 
[INFO] [stderr]    Compiling libc v0.2.85
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking textwrap v0.11.0
[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 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/main.rs (1 fix)
[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: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.62s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]    Compiling libc v0.2.85
[INFO] [stderr]     Checking libudev-sys v0.1.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking nix v0.16.1
[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 (/tmp/fixit)
[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: 5 warnings emitted
[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: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.01s
[INFO] running `Command { std: "docker" "inspect" "79932bc2d56a5bde42889e0f69c481b6ad30f715c28d38cf297a6e18e6fe2dc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79932bc2d56a5bde42889e0f69c481b6ad30f715c28d38cf297a6e18e6fe2dc6", kill_on_drop: false }`
[INFO] [stdout] 79932bc2d56a5bde42889e0f69c481b6ad30f715c28d38cf297a6e18e6fe2dc6