[INFO] cloning repository https://github.com/discordance/rust_sampler_test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/discordance/rust_sampler_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdiscordance%2Frust_sampler_test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdiscordance%2Frust_sampler_test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7a4ecc315860eba124427db25c13a44541c550f5
[INFO] checking discordance/rust_sampler_test against master#31ee872db5aae4750e3da1ca4ed1523c4356947f for pr-78461
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdiscordance%2Frust_sampler_test" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/discordance/rust_sampler_test on toolchain 31ee872db5aae4750e3da1ca4ed1523c4356947f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/discordance/rust_sampler_test
[INFO] finished tweaking git repo https://github.com/discordance/rust_sampler_test
[INFO] tweaked toml for git repo https://github.com/discordance/rust_sampler_test written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/discordance/rust_sampler_test already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "fetch" "--locked" "--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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 337952caa72e69f29cc51d51f978d981cfeb03583483bde8e6068f37a37e7211
[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" "337952caa72e69f29cc51d51f978d981cfeb03583483bde8e6068f37a37e7211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "337952caa72e69f29cc51d51f978d981cfeb03583483bde8e6068f37a37e7211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "337952caa72e69f29cc51d51f978d981cfeb03583483bde8e6068f37a37e7211", kill_on_drop: false }`
[INFO] [stdout] 337952caa72e69f29cc51d51f978d981cfeb03583483bde8e6068f37a37e7211
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "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] e4c23bec95676258c189dd327dd210a65211ea11db53d30c47f0d6dffbb9ed06
[INFO] running `Command { std: "docker" "start" "-a" "e4c23bec95676258c189dd327dd210a65211ea11db53d30c47f0d6dffbb9ed06", 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 v0.1.1 (https://github.com/discordance/cpal.git#ef7a4b60)`
[INFO] [stderr]     ... which is depended on by `cpal v0.8.2 (https://github.com/discordance/cpal.git#ef7a4b60)`
[INFO] [stderr]     ... which is depended on by `smplr v0.0.2 (/opt/rustwide/workdir)`
[INFO] [stderr] links to native library `alsa`
[INFO] [stderr] 
[INFO] [stderr] package `alsa-sys v0.1.2`
[INFO] [stderr]     ... which is depended on by `alsa v0.2.1`
[INFO] [stderr]     ... which is depended on by `midir v0.5.0`
[INFO] [stderr]     ... which is depended on by `smplr v0.0.2 (/opt/rustwide/workdir)`
[INFO] [stderr] also links to native library `alsa`
[INFO] running `Command { std: "docker" "inspect" "e4c23bec95676258c189dd327dd210a65211ea11db53d30c47f0d6dffbb9ed06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4c23bec95676258c189dd327dd210a65211ea11db53d30c47f0d6dffbb9ed06", kill_on_drop: false }`
[INFO] [stdout] e4c23bec95676258c189dd327dd210a65211ea11db53d30c47f0d6dffbb9ed06