[INFO] cloning repository https://github.com/xobs/ltc-modulate
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xobs/ltc-modulate" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxobs%2Fltc-modulate", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxobs%2Fltc-modulate'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a22bed33c09039dc954481ed903d40dfa675567c
[INFO] checking xobs/ltc-modulate against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxobs%2Fltc-modulate" "/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/xobs/ltc-modulate on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xobs/ltc-modulate
[INFO] finished tweaking git repo https://github.com/xobs/ltc-modulate
[INFO] tweaked toml for git repo https://github.com/xobs/ltc-modulate written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/xobs/ltc-modulate already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atty v0.2.3
[INFO] [stderr]   Downloaded bitflags v1.0.0
[INFO] [stderr]   Downloaded clap v2.27.1
[INFO] [stderr]   Downloaded elf v0.0.10
[INFO] [stderr]   Downloaded cpal v0.5.1
[INFO] [stderr]   Downloaded murmur3 v0.3.0
[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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 094379249d5f27c6079542fac02f39b8db33e47ede54d0d53e998d4e65639eae
[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" "094379249d5f27c6079542fac02f39b8db33e47ede54d0d53e998d4e65639eae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "094379249d5f27c6079542fac02f39b8db33e47ede54d0d53e998d4e65639eae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "094379249d5f27c6079542fac02f39b8db33e47ede54d0d53e998d4e65639eae", kill_on_drop: false }`
[INFO] [stdout] 094379249d5f27c6079542fac02f39b8db33e47ede54d0d53e998d4e65639eae
[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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "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] 6eebd4476ad38c88500eba3a4235f120921bef037a846b6c0217ffe03ebaf94c
[INFO] running `Command { std: "docker" "start" "-a" "6eebd4476ad38c88500eba3a4235f120921bef037a846b6c0217ffe03ebaf94c", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.33
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking lazy_static v0.2.9
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking byteorder v1.1.0
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking murmur3 v0.3.0
[INFO] [stderr]     Checking elf v0.0.10
[INFO] [stderr]    Compiling alsa-sys v0.1.1
[INFO] [stderr]     Checking rand v0.3.18
[INFO] [stderr]     Checking atty v0.2.3
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking clap v2.27.1
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking cpal v0.5.1
[INFO] [stderr]     Checking ltc-modulate v1.3.18 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.57s
[INFO] running `Command { std: "docker" "inspect" "6eebd4476ad38c88500eba3a4235f120921bef037a846b6c0217ffe03ebaf94c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6eebd4476ad38c88500eba3a4235f120921bef037a846b6c0217ffe03ebaf94c", kill_on_drop: false }`
[INFO] [stdout] 6eebd4476ad38c88500eba3a4235f120921bef037a846b6c0217ffe03ebaf94c