[INFO] cloning repository https://github.com/jamesmunns/synthtoy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jamesmunns/synthtoy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjamesmunns%2Fsynthtoy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjamesmunns%2Fsynthtoy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6bf00df2b9d8c137d89c9f68807c47e28cdf672c
[INFO] checking jamesmunns/synthtoy against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjamesmunns%2Fsynthtoy" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jamesmunns/synthtoy on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2/source/.cargo/config
[INFO] started tweaking git repo https://github.com/jamesmunns/synthtoy
[INFO] finished tweaking git repo https://github.com/jamesmunns/synthtoy
[INFO] tweaked toml for git repo https://github.com/jamesmunns/synthtoy written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/jamesmunns/synthtoy already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded coreaudio-sys v0.2.4
[INFO] [stderr]   Downloaded thiserror v1.0.13
[INFO] [stderr]   Downloaded clang-sys v0.29.2
[INFO] [stderr]   Downloaded bindgen v0.53.2
[INFO] [stderr]   Downloaded thiserror-impl v1.0.13
[INFO] [stderr]   Downloaded bbqueue v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a63769fb1d2f6a27ca9477b24555afe0e71b9548f64d59f0bdec443ad43cd87d
[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" "a63769fb1d2f6a27ca9477b24555afe0e71b9548f64d59f0bdec443ad43cd87d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a63769fb1d2f6a27ca9477b24555afe0e71b9548f64d59f0bdec443ad43cd87d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a63769fb1d2f6a27ca9477b24555afe0e71b9548f64d59f0bdec443ad43cd87d", kill_on_drop: false }`
[INFO] [stdout] a63769fb1d2f6a27ca9477b24555afe0e71b9548f64d59f0bdec443ad43cd87d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5870b9ebb9e7794f6f8545b87658d6ae30681bb6f8474ce1f83f6819481cb6ad
[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" "5870b9ebb9e7794f6f8545b87658d6ae30681bb6f8474ce1f83f6819481cb6ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling minimp3-sys v0.3.2
[INFO] [stderr]     Checking bbqueue v0.4.1
[INFO] [stderr]     Checking slice-deque v0.3.0
[INFO] [stderr]     Checking alsa-sys v0.1.2
[INFO] [stderr]     Checking minimp3 v0.3.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.13
[INFO] [stderr]     Checking thiserror v1.0.13
[INFO] [stderr]     Checking cpal v0.11.0
[INFO] [stderr]     Checking rodio v0.11.0
[INFO] [stderr]     Checking synthtoy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `rpt`
[INFO] [stdout]    --> src/main.rs:226:13
[INFO] [stdout]     |
[INFO] [stdout] 226 |         let rpt = if elapsed > theo_duration {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_rpt`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rpt`
[INFO] [stdout]    --> src/main.rs:226:13
[INFO] [stdout]     |
[INFO] [stdout] 226 |         let rpt = if elapsed > theo_duration {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_rpt`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` 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 19.34s
[INFO] running `Command { std: "docker" "inspect" "5870b9ebb9e7794f6f8545b87658d6ae30681bb6f8474ce1f83f6819481cb6ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5870b9ebb9e7794f6f8545b87658d6ae30681bb6f8474ce1f83f6819481cb6ad", kill_on_drop: false }`
[INFO] [stdout] 5870b9ebb9e7794f6f8545b87658d6ae30681bb6f8474ce1f83f6819481cb6ad