[INFO] cloning repository https://github.com/1Czerwony/rust-sorting-visualizer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/1Czerwony/rust-sorting-visualizer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1Czerwony%2Frust-sorting-visualizer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1Czerwony%2Frust-sorting-visualizer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4c97206767141765e97976053428ef57d1faf0b3
[INFO] checking 1Czerwony/rust-sorting-visualizer against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1Czerwony%2Frust-sorting-visualizer" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/1Czerwony/rust-sorting-visualizer on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/1Czerwony/rust-sorting-visualizer
[INFO] finished tweaking git repo https://github.com/1Czerwony/rust-sorting-visualizer
[INFO] tweaked toml for git repo https://github.com/1Czerwony/rust-sorting-visualizer written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/1Czerwony/rust-sorting-visualizer 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e084fb7dcb3b6b0f7741e1432d17fe6298a229cb232e3c0fbf21a99414ea10d4
[INFO] running `Command { std: "docker" "start" "-a" "e084fb7dcb3b6b0f7741e1432d17fe6298a229cb232e3c0fbf21a99414ea10d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e084fb7dcb3b6b0f7741e1432d17fe6298a229cb232e3c0fbf21a99414ea10d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e084fb7dcb3b6b0f7741e1432d17fe6298a229cb232e3c0fbf21a99414ea10d4", kill_on_drop: false }`
[INFO] [stdout] e084fb7dcb3b6b0f7741e1432d17fe6298a229cb232e3c0fbf21a99414ea10d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 630c5d782583d2be957d8e4e0d33d4e031232dc8e7db3f618d7d0940f7984b4f
[INFO] running `Command { std: "docker" "start" "-a" "630c5d782583d2be957d8e4e0d33d4e031232dc8e7db3f618d7d0940f7984b4f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling version-compare v0.1.1
[INFO] [stderr]     Checking bytemuck v1.14.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]     Checking encoding_rs v0.8.33
[INFO] [stderr]     Checking smallvec v1.11.1
[INFO] [stderr]    Compiling cpal v0.15.2
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking dasp_sample v0.11.0
[INFO] [stderr]    Compiling sdl2 v0.35.2
[INFO] [stderr]     Checking claxon v0.4.3
[INFO] [stderr]     Checking hound v3.5.1
[INFO] [stderr]     Checking symphonia-core v0.5.3
[INFO] [stderr]    Compiling sdl2-sys v0.35.2
[INFO] [stderr]     Checking ogg v0.8.0
[INFO] [stderr]     Checking lewton v0.10.2
[INFO] [stderr]     Checking symphonia-metadata v0.5.3
[INFO] [stderr]     Checking nix v0.24.3
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking symphonia-bundle-mp3 v0.5.3
[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 rand v0.8.5
[INFO] [stderr]     Checking symphonia v0.5.3
[INFO] [stderr]     Checking rodio v0.17.3
[INFO] [stderr]     Checking rust-sorting-visualizer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `envelope_value` is never read
[INFO] [stdout]   --> src/wavetable_oscillator.rs:55:17
[INFO] [stdout]    |
[INFO] [stdout] 55 |         let mut envelope_value = 0.0;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `envelope_value` is never read
[INFO] [stdout]   --> src/wavetable_oscillator.rs:55:17
[INFO] [stdout]    |
[INFO] [stdout] 55 |         let mut envelope_value = 0.0;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.33s
[INFO] running `Command { std: "docker" "inspect" "630c5d782583d2be957d8e4e0d33d4e031232dc8e7db3f618d7d0940f7984b4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "630c5d782583d2be957d8e4e0d33d4e031232dc8e7db3f618d7d0940f7984b4f", kill_on_drop: false }`
[INFO] [stdout] 630c5d782583d2be957d8e4e0d33d4e031232dc8e7db3f618d7d0940f7984b4f