[INFO] cloning repository https://github.com/bddap/synth0x01
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bddap/synth0x01" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbddap%2Fsynth0x01", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbddap%2Fsynth0x01'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f049e982f7d31a2cfe9d90637ef42f47de2f6f39
[INFO] checking bddap/synth0x01 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbddap%2Fsynth0x01" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bddap/synth0x01 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bddap/synth0x01
[INFO] finished tweaking git repo https://github.com/bddap/synth0x01
[INFO] tweaked toml for git repo https://github.com/bddap/synth0x01 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/bddap/synth0x01 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2bd60232d6888245afba09d90077309620dc88ba1b49199d021bebc8c1b42f24
[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" "2bd60232d6888245afba09d90077309620dc88ba1b49199d021bebc8c1b42f24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2bd60232d6888245afba09d90077309620dc88ba1b49199d021bebc8c1b42f24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bd60232d6888245afba09d90077309620dc88ba1b49199d021bebc8c1b42f24", kill_on_drop: false }`
[INFO] [stdout] 2bd60232d6888245afba09d90077309620dc88ba1b49199d021bebc8c1b42f24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--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] 23f80ff59ffc70490ed5c8042066ae9480c9dc07f0a753d65a775e37470c63e4
[INFO] running `Command { std: "docker" "start" "-a" "23f80ff59ffc70490ed5c8042066ae9480c9dc07f0a753d65a775e37470c63e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking riff v1.0.1
[INFO] [stderr]     Checking wav v0.5.0
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking synth0x01 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `harmonics`
[INFO] [stdout]    --> src/effect.rs:128:8
[INFO] [stdout]     |
[INFO] [stdout] 128 | pub fn harmonics<T: PureEffect + Clone>(effect: T) -> [impl Effect; 9] {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `harmonics`
[INFO] [stdout]    --> src/effect.rs:128:8
[INFO] [stdout]     |
[INFO] [stdout] 128 | pub fn harmonics<T: PureEffect + Clone>(effect: T) -> [impl Effect; 9] {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` 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 [unoptimized + debuginfo] target(s) in 8.02s
[INFO] running `Command { std: "docker" "inspect" "23f80ff59ffc70490ed5c8042066ae9480c9dc07f0a753d65a775e37470c63e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23f80ff59ffc70490ed5c8042066ae9480c9dc07f0a753d65a775e37470c63e4", kill_on_drop: false }`
[INFO] [stdout] 23f80ff59ffc70490ed5c8042066ae9480c9dc07f0a753d65a775e37470c63e4