[INFO] cloning repository https://github.com/RustAudio/rnnoise-c
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RustAudio/rnnoise-c" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRustAudio%2Frnnoise-c", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRustAudio%2Frnnoise-c'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 454ef9d12aeaff32ab00dc59d1d8cce7232a29b1
[INFO] documenting RustAudio/rnnoise-c against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRustAudio%2Frnnoise-c" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RustAudio/rnnoise-c on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/RustAudio/rnnoise-c
[INFO] removed workspace from git repo https://github.com/RustAudio/rnnoise-c
[INFO] removed path dependency rnnoise-sys from git repo https://github.com/RustAudio/rnnoise-c
[INFO] finished tweaking git repo https://github.com/RustAudio/rnnoise-c
[INFO] tweaked toml for git repo https://github.com/RustAudio/rnnoise-c written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/RustAudio/rnnoise-c already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-4/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded audrey v0.2.0
[INFO] [stderr]   Downloaded alac v0.3.3
[INFO] [stderr]   Downloaded caf v0.1.0
[INFO] [stderr]   Downloaded rnnoise-sys v0.1.3
[INFO] [stderr]   Downloaded lewton v0.7.0
[INFO] [stderr]   Downloaded sample v0.9.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] adf25ae983abd8f97994bf956a41dcff81dfa904f0d8db9edabc833bda66cca3
[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" "adf25ae983abd8f97994bf956a41dcff81dfa904f0d8db9edabc833bda66cca3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "adf25ae983abd8f97994bf956a41dcff81dfa904f0d8db9edabc833bda66cca3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adf25ae983abd8f97994bf956a41dcff81dfa904f0d8db9edabc833bda66cca3", kill_on_drop: false }`
[INFO] [stdout] adf25ae983abd8f97994bf956a41dcff81dfa904f0d8db9edabc833bda66cca3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d48f98de9ac852ac4f5d43e4f0945300f0aa0ced481c16954a5eb3165a84c9d
[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" "2d48f98de9ac852ac4f5d43e4f0945300f0aa0ced481c16954a5eb3165a84c9d", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling bindgen v0.53.3
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling clang-sys v0.29.3
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling rnnoise-sys v0.1.3
[INFO] [stderr]  Documenting rnnoise-c v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.47s
[INFO] running `Command { std: "docker" "inspect" "2d48f98de9ac852ac4f5d43e4f0945300f0aa0ced481c16954a5eb3165a84c9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d48f98de9ac852ac4f5d43e4f0945300f0aa0ced481c16954a5eb3165a84c9d", kill_on_drop: false }`
[INFO] [stdout] 2d48f98de9ac852ac4f5d43e4f0945300f0aa0ced481c16954a5eb3165a84c9d