[INFO] cloning repository https://github.com/dctucker/feosynth
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dctucker/feosynth" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdctucker%2Ffeosynth", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdctucker%2Ffeosynth'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6a6bc81a7e1c352d0b963270c4f99a34cc0cb242
[INFO] checking dctucker/feosynth against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdctucker%2Ffeosynth" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dctucker/feosynth on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dctucker/feosynth
[INFO] finished tweaking git repo https://github.com/dctucker/feosynth
[INFO] tweaked toml for git repo https://github.com/dctucker/feosynth written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/dctucker/feosynth already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded signal-hook v0.1.16
[INFO] [stderr]   Downloaded alsa-sys v0.3.0
[INFO] [stderr]   Downloaded alsa v0.4.2
[INFO] [stderr]   Downloaded cpal v0.12.1
[INFO] [stderr]   Downloaded asio-sys v0.2.0
[INFO] [stderr]   Downloaded crossbeam-deque v0.5.2
[INFO] [stderr]   Downloaded bindgen v0.54.1
[INFO] [stderr]   Downloaded num-derive v0.3.1
[INFO] [stderr]   Downloaded midir v0.6.2
[INFO] [stderr]   Downloaded alsa v0.2.2
[INFO] [stderr]   Downloaded crossbeam v0.4.1
[INFO] [stderr]   Downloaded midi v0.1.0
[INFO] [stderr]   Downloaded midistream v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dcadacf39a5a8969fcfff3464f3e9130a2c17b5d02a899959a1fd4f1cb618fc8
[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" "dcadacf39a5a8969fcfff3464f3e9130a2c17b5d02a899959a1fd4f1cb618fc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dcadacf39a5a8969fcfff3464f3e9130a2c17b5d02a899959a1fd4f1cb618fc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcadacf39a5a8969fcfff3464f3e9130a2c17b5d02a899959a1fd4f1cb618fc8", kill_on_drop: false }`
[INFO] [stdout] dcadacf39a5a8969fcfff3464f3e9130a2c17b5d02a899959a1fd4f1cb618fc8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "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] 49ebd8defff25c22ea0d8ebd554fae35a756b257a459f0c1f6b75032f1a7863d
[INFO] running `Command { std: "docker" "start" "-a" "49ebd8defff25c22ea0d8ebd554fae35a756b257a459f0c1f6b75032f1a7863d", kill_on_drop: false }`
[INFO] [stderr] error: multiple packages link to native library `alsa`, but a native library can be linked only once
[INFO] [stderr] 
[INFO] [stderr] package `alsa-sys v0.1.2`
[INFO] [stderr]     ... which satisfies dependency `alsa-sys = "=0.1.2"` of package `alsa v0.2.2`
[INFO] [stderr]     ... which satisfies dependency `alsa = "=0.2.2"` of package `midir v0.6.2`
[INFO] [stderr]     ... which satisfies dependency `midir = "=0.6.2"` of package `feosynth v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] links to native library `alsa`
[INFO] [stderr] 
[INFO] [stderr] package `alsa-sys v0.3.0`
[INFO] [stderr]     ... which satisfies dependency `alsa-sys = "=0.3.0"` of package `alsa v0.4.2`
[INFO] [stderr]     ... which satisfies dependency `alsa = "=0.4.2"` of package `cpal v0.12.1`
[INFO] [stderr]     ... which satisfies dependency `cpal = "=0.12.1"` of package `feosynth v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] also links to native library `alsa`
[INFO] running `Command { std: "docker" "inspect" "49ebd8defff25c22ea0d8ebd554fae35a756b257a459f0c1f6b75032f1a7863d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49ebd8defff25c22ea0d8ebd554fae35a756b257a459f0c1f6b75032f1a7863d", kill_on_drop: false }`
[INFO] [stdout] 49ebd8defff25c22ea0d8ebd554fae35a756b257a459f0c1f6b75032f1a7863d