[INFO] fetching crate audio-mixer 0.1.2...
[INFO] checking audio-mixer-0.1.2 against try#15a786332e2f0dd343b226ab6bb8ec028a350f73 for pr-81782
[INFO] extracting crate audio-mixer 0.1.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate audio-mixer 0.1.2 on toolchain 15a786332e2f0dd343b226ab6bb8ec028a350f73
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate audio-mixer 0.1.2
[INFO] finished tweaking crates.io crate audio-mixer 0.1.2
[INFO] tweaked toml for crates.io crate audio-mixer 0.1.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate audio-mixer 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f3ac3e14b48d9ccac8eb46618d268c8ff7f7fc7a96b4e9342ea68ec5d393f2a1
[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" "f3ac3e14b48d9ccac8eb46618d268c8ff7f7fc7a96b4e9342ea68ec5d393f2a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3ac3e14b48d9ccac8eb46618d268c8ff7f7fc7a96b4e9342ea68ec5d393f2a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3ac3e14b48d9ccac8eb46618d268c8ff7f7fc7a96b4e9342ea68ec5d393f2a1", kill_on_drop: false }`
[INFO] [stdout] f3ac3e14b48d9ccac8eb46618d268c8ff7f7fc7a96b4e9342ea68ec5d393f2a1
[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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 73035f23b3cc205f6aa17eb5b15b76673d7326020b4b0fae083cda24292f6ce5
[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" "73035f23b3cc205f6aa17eb5b15b76673d7326020b4b0fae083cda24292f6ce5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking audio-mixer v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]     Checking criterion-plot v0.4.0
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking memchr v2.2.1
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking rand_os v0.2.2
[INFO] [stderr]     Checking rand_xoshiro v0.3.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]     Checking float-cmp v0.6.0
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking tinytemplate v1.0.3
[INFO] [stderr]     Checking criterion v0.3.0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.50s
[INFO] running `Command { std: "docker" "inspect" "73035f23b3cc205f6aa17eb5b15b76673d7326020b4b0fae083cda24292f6ce5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73035f23b3cc205f6aa17eb5b15b76673d7326020b4b0fae083cda24292f6ce5", kill_on_drop: false }`
[INFO] [stdout] 73035f23b3cc205f6aa17eb5b15b76673d7326020b4b0fae083cda24292f6ce5