[INFO] cloning repository https://github.com/Niedzwiedzw/learning-audio-programming
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Niedzwiedzw/learning-audio-programming" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNiedzwiedzw%2Flearning-audio-programming", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNiedzwiedzw%2Flearning-audio-programming'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ac3fb55d7c0c12a9dcecaa8bece165e6397f23c6
[INFO] testing Niedzwiedzw/learning-audio-programming against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNiedzwiedzw%2Flearning-audio-programming" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] [stderr] Updating files:  70% (7/10)
Updating files:  80% (8/10)
Updating files:  90% (9/10)
Updating files: 100% (10/10)
Updating files: 100% (10/10), done.
[INFO] validating manifest of git repo https://github.com/Niedzwiedzw/learning-audio-programming on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Niedzwiedzw/learning-audio-programming
[INFO] finished tweaking git repo https://github.com/Niedzwiedzw/learning-audio-programming
[INFO] tweaked toml for git repo https://github.com/Niedzwiedzw/learning-audio-programming written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/Niedzwiedzw/learning-audio-programming already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded font-kit v0.10.0
[INFO] [stderr]   Downloaded rustfft v6.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 60e8e5c2beedc04931d58c0678da7b77bd9869c19ee131bb79b83a1a465ace7f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "60e8e5c2beedc04931d58c0678da7b77bd9869c19ee131bb79b83a1a465ace7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60e8e5c2beedc04931d58c0678da7b77bd9869c19ee131bb79b83a1a465ace7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60e8e5c2beedc04931d58c0678da7b77bd9869c19ee131bb79b83a1a465ace7f", kill_on_drop: false }`
[INFO] [stdout] 60e8e5c2beedc04931d58c0678da7b77bd9869c19ee131bb79b83a1a465ace7f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e087b704827f2e6e14282384a151bf7ddf95a606aa85f62be453d9f33ef4da96
[INFO] running `Command { std: "docker" "start" "-a" "e087b704827f2e6e14282384a151bf7ddf95a606aa85f62be453d9f33ef4da96", 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]    Compiling plotters-backend v0.3.0
[INFO] [stderr]    Compiling strength_reduce v0.2.3
[INFO] [stderr]    Compiling ttf-parser v0.12.1
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling itertools v0.10.0
[INFO] [stderr]    Compiling ringbuf v0.2.5
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling rand_xorshift v0.3.0
[INFO] [stderr]    Compiling rand_distr v0.4.0
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling plotters-svg v0.3.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling transpose v0.2.1
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling primal-check v0.3.1
[INFO] [stderr]    Compiling freetype-sys v0.13.1
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling rustfft v6.0.1
[INFO] [stderr]    Compiling image v0.23.14
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling servo-fontconfig-sys v5.1.0
[INFO] [stderr]    Compiling freetype v0.7.0
[INFO] [stderr]    Compiling servo-fontconfig v0.5.1
[INFO] [stderr]    Compiling font-kit v0.10.0
[INFO] [stderr]    Compiling plotters-bitmap v0.3.1
[INFO] [stderr]    Compiling plotters v0.3.1
[INFO] [stderr]    Compiling learning-audio-programming v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(min_type_alias_impl_trait)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in favor of full type_alias_impl_trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]  --> src/pythagorean_chords.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `WavReader`, `WavWriter`
[INFO] [stdout]  --> src/lo_pass_filter.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use hound::{WavReader, WavWriter};
[INFO] [stdout]   |             ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Consumer`, `Producer`, `RingBuffer`
[INFO] [stdout]  --> src/lo_pass_filter.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use ringbuf::{Consumer, Producer, RingBuffer};
[INFO] [stdout]   |               ^^^^^^^^  ^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AMPLITUDE`, `SAMPLE_RATE`, `sine_wave`
[INFO] [stdout]  --> src/plot_frequency.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::pythagorean_chords::{sine_wave, AMPLITUDE, SAMPLE_RATE};
[INFO] [stdout]   |                                 ^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::SeedableRng`
[INFO] [stdout]  --> src/plot_frequency.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rand::SeedableRng;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Distribution`, `Normal`
[INFO] [stdout]  --> src/plot_frequency.rs:7:18
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rand_distr::{Distribution, Normal};
[INFO] [stdout]   |                  ^^^^^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand_xorshift::XorShiftRng`
[INFO] [stdout]  --> src/plot_frequency.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use rand_xorshift::XorShiftRng;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> src/plot_frequency.rs:10:19
[INFO] [stdout]    |
[INFO] [stdout] 10 |     num_complex::{self, Complex},
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `learning-audio-programming` due to 2 previous errors; 8 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "e087b704827f2e6e14282384a151bf7ddf95a606aa85f62be453d9f33ef4da96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e087b704827f2e6e14282384a151bf7ddf95a606aa85f62be453d9f33ef4da96", kill_on_drop: false }`
[INFO] [stdout] e087b704827f2e6e14282384a151bf7ddf95a606aa85f62be453d9f33ef4da96