[INFO] cloning repository https://github.com/willm/synth
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/willm/synth" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillm%2Fsynth", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillm%2Fsynth'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 90117207ab0192906878880b03af91f753813d65
[INFO] checking willm/synth against master#af3c6e733a40e671550e0f0f5aeecaa13772ba56 for pr-74989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillm%2Fsynth" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/willm/synth on toolchain af3c6e733a40e671550e0f0f5aeecaa13772ba56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/willm/synth
[INFO] finished tweaking git repo https://github.com/willm/synth
[INFO] tweaked toml for git repo https://github.com/willm/synth written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/willm/synth already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 98eeb6451abf161b25dc2dc4a38f6fb7a41a54cc42fcce0802c4efa4d171af6e
[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" "98eeb6451abf161b25dc2dc4a38f6fb7a41a54cc42fcce0802c4efa4d171af6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98eeb6451abf161b25dc2dc4a38f6fb7a41a54cc42fcce0802c4efa4d171af6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98eeb6451abf161b25dc2dc4a38f6fb7a41a54cc42fcce0802c4efa4d171af6e", kill_on_drop: false }`
[INFO] [stdout] 98eeb6451abf161b25dc2dc4a38f6fb7a41a54cc42fcce0802c4efa4d171af6e
[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=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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b6d94d8b4fac4f71ee97f87cef2b1eee7bcf5d385f7f28f6e1d02364877d710
[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" "2b6d94d8b4fac4f71ee97f87cef2b1eee7bcf5d385f7f28f6e1d02364877d710", 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 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 `synth 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 v0.12.0`
[INFO] [stderr]     ... which is depended on by `synth v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] also links to native library `alsa`
[INFO] running `Command { std: "docker" "inspect" "2b6d94d8b4fac4f71ee97f87cef2b1eee7bcf5d385f7f28f6e1d02364877d710", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b6d94d8b4fac4f71ee97f87cef2b1eee7bcf5d385f7f28f6e1d02364877d710", kill_on_drop: false }`
[INFO] [stdout] 2b6d94d8b4fac4f71ee97f87cef2b1eee7bcf5d385f7f28f6e1d02364877d710
