[INFO] cloning repository https://github.com/matthewalltop/music-trainer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matthewalltop/music-trainer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatthewalltop%2Fmusic-trainer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatthewalltop%2Fmusic-trainer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5479ab1d436e7bc35da8c03573cd49cde85e63e5
[INFO] checking matthewalltop/music-trainer against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatthewalltop%2Fmusic-trainer" "/workspace/builds/worker-72/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-72/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matthewalltop/music-trainer 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/matthewalltop/music-trainer
[INFO] finished tweaking git repo https://github.com/matthewalltop/music-trainer
[INFO] tweaked toml for git repo https://github.com/matthewalltop/music-trainer written to /workspace/builds/worker-72/source/Cargo.toml
[INFO] crate git repo https://github.com/matthewalltop/music-trainer 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 }`
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[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] [stdout] 0579d7a4e6279c250f8e7489cd4064586cbf325ab5b54b17a7ccb08b74ac58b9
[INFO] running `Command { std: "docker" "start" "-a" "0579d7a4e6279c250f8e7489cd4064586cbf325ab5b54b17a7ccb08b74ac58b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0579d7a4e6279c250f8e7489cd4064586cbf325ab5b54b17a7ccb08b74ac58b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0579d7a4e6279c250f8e7489cd4064586cbf325ab5b54b17a7ccb08b74ac58b9", kill_on_drop: false }`
[INFO] [stdout] 0579d7a4e6279c250f8e7489cd4064586cbf325ab5b54b17a7ccb08b74ac58b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/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] 16309fa15310c2ffa778ac6eac564d8171ce43c7f60938d530294d28a1a666b7
[INFO] running `Command { std: "docker" "start" "-a" "16309fa15310c2ffa778ac6eac564d8171ce43c7f60938d530294d28a1a666b7", 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]   memchr v2.3.3: use_std
[INFO] [stderr] 
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling version-compare v0.0.10
[INFO] [stderr]    Compiling strum v0.18.0
[INFO] [stderr]    Compiling libc v0.2.72
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]    Compiling memchr v2.3.3
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[INFO] [stderr]     Checking once_cell v1.4.0
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[INFO] [stderr]     Checking slab v0.4.2
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[INFO] [stderr]    Compiling either v1.5.3
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[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]    Compiling alsa-sys v0.1.2
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[INFO] [stderr]     Checking smallvec v0.6.13
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[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.3
[INFO] [stderr]    Compiling minimp3-sys v0.3.2
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking lewton v0.10.2
[INFO] [stderr]     Checking slice-deque v0.3.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking minimp3 v0.3.5
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking once_cell v0.2.4
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling strum_macros v0.18.0
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling glib-macros v0.10.1
[INFO] [stderr]    Compiling thiserror v1.0.20
[INFO] [stderr]     Checking mp3-duration v0.1.10
[INFO] [stderr]     Checking rodio v0.11.0
[INFO] [stderr]    Compiling system-deps v1.3.2
[INFO] [stderr]     Checking pin-project v0.4.22
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]    Compiling glib-sys v0.10.0
[INFO] [stderr]    Compiling gobject-sys v0.10.0
[INFO] [stderr]    Compiling pango-sys v0.10.0
[INFO] [stderr]    Compiling cairo-sys-rs v0.10.0
[INFO] [stderr]    Compiling gio-sys v0.10.0
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.10.0
[INFO] [stderr]    Compiling gdk-sys v0.10.0
[INFO] [stderr]    Compiling atk-sys v0.10.0
[INFO] [stderr]    Compiling gtk-sys v0.10.0
[INFO] [stderr]    Compiling pangocairo-sys v0.11.0
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking glib v0.10.1
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking music_trainer v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/application.rs (2 fixes)
[INFO] [stderr]        Fixed src/audio.rs (1 fix)
[INFO] [stdout] warning: field is never read: `control_channel`
[INFO] [stdout]   --> src/application.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     control_channel: Sender<bool>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `audio_handler`
[INFO] [stdout]   --> src/application.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     audio_handler: Option<AudioFileHandler>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Source`
[INFO] [stdout]   --> src/audio.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Source<T> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_source`
[INFO] [stdout]   --> src/audio.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn set_source(audio_source: File) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_source`
[INFO] [stdout]   --> src/audio.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn get_source(&self) -> File {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `initialize`
[INFO] [stdout]   --> src/audio.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn initialize() -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pause`
[INFO] [stdout]   --> src/audio.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn pause(&self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `control_channel`
[INFO] [stdout]   --> src/application.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     control_channel: Sender<bool>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `audio_handler`
[INFO] [stdout]   --> src/application.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     audio_handler: Option<AudioFileHandler>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Source`
[INFO] [stdout]   --> src/audio.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Source<T> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_source`
[INFO] [stdout]   --> src/audio.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn set_source(audio_source: File) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_source`
[INFO] [stdout]   --> src/audio.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn get_source(&self) -> File {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `initialize`
[INFO] [stdout]   --> src/audio.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn initialize() -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pause`
[INFO] [stdout]   --> src/audio.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn pause(&self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 54s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking glib v0.10.1
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking gio v0.9.0
[INFO] [stderr]     Checking cairo-rs v0.9.1
[INFO] [stderr]     Checking pango v0.9.0
[INFO] [stderr]     Checking atk v0.9.0
[INFO] [stderr]     Checking pangocairo v0.10.0
[INFO] [stderr]     Checking gdk-pixbuf v0.9.0
[INFO] [stderr]     Checking gdk v0.13.0
[INFO] [stderr]     Checking gtk v0.9.0
[INFO] [stderr]     Checking music_trainer v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: field is never read: `control_channel`
[INFO] [stdout]   --> src/application.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     control_channel: Sender<bool>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `audio_handler`
[INFO] [stdout]   --> src/application.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     audio_handler: Option<AudioFileHandler>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Source`
[INFO] [stdout]   --> src/audio.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Source<T> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_source`
[INFO] [stdout]   --> src/audio.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn set_source(audio_source: File) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_source`
[INFO] [stdout]   --> src/audio.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn get_source(&self) -> File {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `initialize`
[INFO] [stdout]   --> src/audio.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn initialize() -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pause`
[INFO] [stdout]   --> src/audio.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn pause(&self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `control_channel`
[INFO] [stdout]   --> src/application.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     control_channel: Sender<bool>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `audio_handler`
[INFO] [stdout]   --> src/application.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     audio_handler: Option<AudioFileHandler>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Source`
[INFO] [stdout]   --> src/audio.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Source<T> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_source`
[INFO] [stdout]   --> src/audio.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn set_source(audio_source: File) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_source`
[INFO] [stdout]   --> src/audio.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn get_source(&self) -> File {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `initialize`
[INFO] [stdout]   --> src/audio.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn initialize() -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pause`
[INFO] [stdout]   --> src/audio.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn pause(&self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 06s
[INFO] running `Command { std: "docker" "inspect" "16309fa15310c2ffa778ac6eac564d8171ce43c7f60938d530294d28a1a666b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16309fa15310c2ffa778ac6eac564d8171ce43c7f60938d530294d28a1a666b7", kill_on_drop: false }`
[INFO] [stdout] 16309fa15310c2ffa778ac6eac564d8171ce43c7f60938d530294d28a1a666b7