[INFO] cloning repository https://github.com/LunaeSomnia/audio-player
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LunaeSomnia/audio-player" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLunaeSomnia%2Faudio-player", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLunaeSomnia%2Faudio-player'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 183ac43eae5355614ee7fac28b5591113e0e7a89
[INFO] checking LunaeSomnia/audio-player/183ac43eae5355614ee7fac28b5591113e0e7a89 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLunaeSomnia%2Faudio-player" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LunaeSomnia/audio-player on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LunaeSomnia/audio-player
[INFO] finished tweaking git repo https://github.com/LunaeSomnia/audio-player
[INFO] tweaked toml for git repo https://github.com/LunaeSomnia/audio-player written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/LunaeSomnia/audio-player 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aa62d49a93e43597bd1c2934342a1edb203a584028b781f34f29e0c8be6c6988
[INFO] running `Command { std: "docker" "start" "-a" "aa62d49a93e43597bd1c2934342a1edb203a584028b781f34f29e0c8be6c6988", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa62d49a93e43597bd1c2934342a1edb203a584028b781f34f29e0c8be6c6988", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa62d49a93e43597bd1c2934342a1edb203a584028b781f34f29e0c8be6c6988", kill_on_drop: false }`
[INFO] [stdout] aa62d49a93e43597bd1c2934342a1edb203a584028b781f34f29e0c8be6c6988
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8aeb4accb99b8ca24a4e08b07ca8b84bcfbb0d34c537be294c7e1c3c5b89abfb
[INFO] running `Command { std: "docker" "start" "-a" "8aeb4accb99b8ca24a4e08b07ca8b84bcfbb0d34c537be294c7e1c3c5b89abfb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.115
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling cpal v0.13.5
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[INFO] [stderr]     Checking basedrop v0.1.2
[INFO] [stderr]     Checking hound v3.4.0
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking alsa v0.6.0
[INFO] [stderr]     Checking audio-player v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `AudioTrackHandler`
[INFO] [stdout]  --> src/audio_player.rs:3:38
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::audio_track::{AudioTrack, AudioTrackHandler};
[INFO] [stdout]   |                                      ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AudioTrackHandler`
[INFO] [stdout]  --> src/audio_player.rs:3:38
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::audio_track::{AudioTrack, AudioTrackHandler};
[INFO] [stdout]   |                                      ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | /     loop {
[INFO] [stdout] 37 | |         if player.advance() {
[INFO] [stdout] 38 | |             curr += 1;
[INFO] [stdout] 39 | |             if curr == change_vol_1 {
[INFO] [stdout] ...  |
[INFO] [stdout] 50 | |         }
[INFO] [stdout] 51 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 52 |
[INFO] [stdout] 53 |       stream.stop().unwrap();
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | /     loop {
[INFO] [stdout] 37 | |         if player.advance() {
[INFO] [stdout] 38 | |             curr += 1;
[INFO] [stdout] 39 | |             if curr == change_vol_1 {
[INFO] [stdout] ...  |
[INFO] [stdout] 50 | |         }
[INFO] [stdout] 51 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 52 |
[INFO] [stdout] 53 |       stream.stop().unwrap();
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/audio_file.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |     IOError(String),
[INFO] [stdout]    |     ------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AudioFileError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 36 |     IOError(()),
[INFO] [stdout]    |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AudioTrackHandler` is never constructed
[INFO] [stdout]   --> src/audio_track.rs:98:12
[INFO] [stdout]    |
[INFO] [stdout] 98 | pub struct AudioTrackHandler<'a> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set_volume` is never used
[INFO] [stdout]    --> src/audio_track.rs:103:12
[INFO] [stdout]     |
[INFO] [stdout] 102 | impl<'a> AudioTrackHandler<'a> {
[INFO] [stdout]     | ------------------------------ method in this implementation
[INFO] [stdout] 103 |     pub fn set_volume(&mut self, new_volume: f32) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/audio_file.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |     IOError(String),
[INFO] [stdout]    |     ------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AudioFileError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 36 |     IOError(()),
[INFO] [stdout]    |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AudioTrackHandler` is never constructed
[INFO] [stdout]   --> src/audio_track.rs:98:12
[INFO] [stdout]    |
[INFO] [stdout] 98 | pub struct AudioTrackHandler<'a> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set_volume` is never used
[INFO] [stdout]    --> src/audio_track.rs:103:12
[INFO] [stdout]     |
[INFO] [stdout] 102 | impl<'a> AudioTrackHandler<'a> {
[INFO] [stdout]     | ------------------------------ method in this implementation
[INFO] [stdout] 103 |     pub fn set_volume(&mut self, new_volume: f32) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.39s
[INFO] running `Command { std: "docker" "inspect" "8aeb4accb99b8ca24a4e08b07ca8b84bcfbb0d34c537be294c7e1c3c5b89abfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8aeb4accb99b8ca24a4e08b07ca8b84bcfbb0d34c537be294c7e1c3c5b89abfb", kill_on_drop: false }`
[INFO] [stdout] 8aeb4accb99b8ca24a4e08b07ca8b84bcfbb0d34c537be294c7e1c3c5b89abfb