[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] testing dctucker/feosynth against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdctucker%2Ffeosynth" "/workspace/builds/worker-102/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-102/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dctucker/feosynth on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-102/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" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", 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]  Downloading crates ...
[INFO] [stderr]   Downloaded alsa-sys v0.3.0
[INFO] [stderr]   Downloaded alsa v0.4.2
[INFO] [stderr]   Downloaded asio-sys v0.2.0
[INFO] [stderr]   Downloaded crossbeam-deque v0.5.2
[INFO] [stderr]   Downloaded num-derive v0.3.1
[INFO] [stderr]   Downloaded alsa v0.2.2
[INFO] [stderr]   Downloaded midir v0.6.2
[INFO] [stderr]   Downloaded bindgen v0.54.1
[INFO] [stderr]   Downloaded crossbeam v0.4.1
[INFO] [stderr]   Downloaded cpal v0.12.1
[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-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1169908313b7b11582537a055ccdea13d06a9b0b52e67fee2e423231de07e71c
[INFO] running `Command { std: "docker" "start" "-a" "1169908313b7b11582537a055ccdea13d06a9b0b52e67fee2e423231de07e71c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1169908313b7b11582537a055ccdea13d06a9b0b52e67fee2e423231de07e71c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1169908313b7b11582537a055ccdea13d06a9b0b52e67fee2e423231de07e71c", kill_on_drop: false }`
[INFO] [stdout] 1169908313b7b11582537a055ccdea13d06a9b0b52e67fee2e423231de07e71c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e681ec18a22017b26eba1fa081518fa9a8b6c6bc181aec1ffd0a4c316e83f963
[INFO] running `Command { std: "docker" "start" "-a" "e681ec18a22017b26eba1fa081518fa9a8b6c6bc181aec1ffd0a4c316e83f963", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 is depended on by `alsa v0.2.2`
[INFO] [stderr]     ... which is depended on by `midir v0.6.2`
[INFO] [stderr]     ... which is depended on by `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 is depended on by `alsa v0.4.2`
[INFO] [stderr]     ... which is depended on by `cpal v0.12.1`
[INFO] [stderr]     ... which is depended on by `feosynth v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] also links to native library `alsa`
[INFO] running `Command { std: "docker" "inspect" "e681ec18a22017b26eba1fa081518fa9a8b6c6bc181aec1ffd0a4c316e83f963", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e681ec18a22017b26eba1fa081518fa9a8b6c6bc181aec1ffd0a4c316e83f963", kill_on_drop: false }`
[INFO] [stdout] e681ec18a22017b26eba1fa081518fa9a8b6c6bc181aec1ffd0a4c316e83f963