[INFO] fetching crate sonant 0.1.0...
[INFO] checking sonant-0.1.0 against master#d62d3f7fa9a91d933213cc10e20e740608983f64 for pr-77015
[INFO] extracting crate sonant 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate sonant 0.1.0 on toolchain d62d3f7fa9a91d933213cc10e20e740608983f64
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sonant 0.1.0
[INFO] finished tweaking crates.io crate sonant 0.1.0
[INFO] tweaked toml for crates.io crate sonant 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate sonant 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb96130fc8331c28cece9cc7f9f8deed5bd4c2d45182e2e0ace95e8b3ae523a7
[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" "eb96130fc8331c28cece9cc7f9f8deed5bd4c2d45182e2e0ace95e8b3ae523a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb96130fc8331c28cece9cc7f9f8deed5bd4c2d45182e2e0ace95e8b3ae523a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb96130fc8331c28cece9cc7f9f8deed5bd4c2d45182e2e0ace95e8b3ae523a7", kill_on_drop: false }`
[INFO] [stdout] eb96130fc8331c28cece9cc7f9f8deed5bd4c2d45182e2e0ace95e8b3ae523a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 431dd070a4c1be77c36c5efce3900ca721e714d410577f5a3b8e77987972dec7
[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" "431dd070a4c1be77c36c5efce3900ca721e714d410577f5a3b8e77987972dec7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling syn v1.0.7
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling cc v1.0.46
[INFO] [stderr]    Compiling pkg-config v0.3.16
[INFO] [stderr]    Compiling winapi v0.3.8
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling libm v0.1.4
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling cpal v0.10.0
[INFO] [stderr]     Checking rgb v0.8.14
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]     Checking randomize v3.0.1
[INFO] [stderr]     Checking riff-wave v0.1.2
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking winconsole v0.10.0
[INFO] [stderr]     Checking colored v1.8.0
[INFO] [stderr]    Compiling synstructure v0.12.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.4
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking thiserror v1.0.4
[INFO] [stderr]     Checking sonant v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.21s
[INFO] running `Command { std: "docker" "inspect" "431dd070a4c1be77c36c5efce3900ca721e714d410577f5a3b8e77987972dec7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "431dd070a4c1be77c36c5efce3900ca721e714d410577f5a3b8e77987972dec7", kill_on_drop: false }`
[INFO] [stdout] 431dd070a4c1be77c36c5efce3900ca721e714d410577f5a3b8e77987972dec7