[INFO] cloning repository https://github.com/DaniloDjokic/rust_synth
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DaniloDjokic/rust_synth" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDaniloDjokic%2Frust_synth", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDaniloDjokic%2Frust_synth'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] afb4b952f3fc5206254c1785fe544613d0d2bc4e
[INFO] checking DaniloDjokic/rust_synth against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDaniloDjokic%2Frust_synth" "/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/DaniloDjokic/rust_synth on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DaniloDjokic/rust_synth
[INFO] finished tweaking git repo https://github.com/DaniloDjokic/rust_synth
[INFO] tweaked toml for git repo https://github.com/DaniloDjokic/rust_synth written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/DaniloDjokic/rust_synth 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cocoa v0.22.0
[INFO] [stderr]   Downloaded rdev v0.5.3
[INFO] [stderr]   Downloaded coreaudio-sys v0.2.12
[INFO] [stderr]   Downloaded alsa v0.7.1
[INFO] [stderr]   Downloaded coreaudio-rs v0.11.2
[INFO] [stderr]   Downloaded jni v0.20.0
[INFO] [stderr]   Downloaded oboe-sys v0.5.0
[INFO] [stderr]   Downloaded oboe v0.5.0
[INFO] [stderr]   Downloaded cpal v0.15.2
[INFO] [stderr]   Downloaded core-graphics v0.21.0
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e4bf88cfd5033412c2bce919a8e1cb63d69408f28887399fe7f14e97a081245
[INFO] running `Command { std: "docker" "start" "-a" "0e4bf88cfd5033412c2bce919a8e1cb63d69408f28887399fe7f14e97a081245", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e4bf88cfd5033412c2bce919a8e1cb63d69408f28887399fe7f14e97a081245", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e4bf88cfd5033412c2bce919a8e1cb63d69408f28887399fe7f14e97a081245", kill_on_drop: false }`
[INFO] [stdout] 0e4bf88cfd5033412c2bce919a8e1cb63d69408f28887399fe7f14e97a081245
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ccf4dd87274d04a622b14cec56e8090667b7ff23fe8d77b6de278f65e620fb36
[INFO] running `Command { std: "docker" "start" "-a" "ccf4dd87274d04a622b14cec56e8090667b7ff23fe8d77b6de278f65e620fb36", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]     Checking smallvec v1.11.0
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]     Checking hashbrown v0.14.0
[INFO] [stderr]    Compiling cpal v0.15.2
[INFO] [stderr]     Checking winnow v0.5.15
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]     Checking dasp_sample v0.11.0
[INFO] [stderr]     Checking serde_spanned v0.6.4
[INFO] [stderr]     Checking toml_datetime v0.6.5
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling x11 v2.21.0
[INFO] [stderr]     Checking indexmap v2.0.0
[INFO] [stderr]     Checking toml_edit v0.21.0
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking nix v0.24.3
[INFO] [stderr]     Checking mio v0.8.9
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking alsa v0.7.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking crossterm v0.27.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rdev v0.5.3
[INFO] [stderr]     Checking toml v0.8.8
[INFO] [stderr]     Checking rust_synth v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `toml` is imported redundantly
[INFO] [stdout]  --> src/initialization/instrument_loader.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use toml;
[INFO] [stdout]   |     ^^^^ the item `toml` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `toml` is imported redundantly
[INFO] [stdout]  --> src/initialization/instrument_loader.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use toml;
[INFO] [stdout]   |     ^^^^ the item `toml` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Square`, `Triangle`, `AnalogSaw`, and `DigitalSaw` are never constructed
[INFO] [stdout]   --> src/sample_generator/oscilator.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub enum Oscilator {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] 17 |     Sine,
[INFO] [stdout] 18 |     Square,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 19 |     Triangle,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 20 |     AnalogSaw(u32),
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 21 |     DigitalSaw,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/sample_generator/instrument/epiano.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl EPiano {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 15 |     pub fn new(channel: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_base_frequency` is never used
[INFO] [stdout]   --> src/sample_generator/note.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Note {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub fn get_base_frequency(&self) -> f32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Square`, `Triangle`, `AnalogSaw`, and `DigitalSaw` are never constructed
[INFO] [stdout]   --> src/sample_generator/oscilator.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub enum Oscilator {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] 17 |     Sine,
[INFO] [stdout] 18 |     Square,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 19 |     Triangle,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 20 |     AnalogSaw(u32),
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 21 |     DigitalSaw,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/sample_generator/instrument/epiano.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl EPiano {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 15 |     pub fn new(channel: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_base_frequency` is never used
[INFO] [stdout]   --> src/sample_generator/note.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Note {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub fn get_base_frequency(&self) -> f32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.14s
[INFO] running `Command { std: "docker" "inspect" "ccf4dd87274d04a622b14cec56e8090667b7ff23fe8d77b6de278f65e620fb36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccf4dd87274d04a622b14cec56e8090667b7ff23fe8d77b6de278f65e620fb36", kill_on_drop: false }`
[INFO] [stdout] ccf4dd87274d04a622b14cec56e8090667b7ff23fe8d77b6de278f65e620fb36