[INFO] fetching crate dmux 0.5.2...
[INFO] documenting dmux-0.5.2 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate dmux 0.5.2 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate dmux 0.5.2 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 crates.io crate dmux 0.5.2
[INFO] finished tweaking crates.io crate dmux 0.5.2
[INFO] tweaked toml for crates.io crate dmux 0.5.2 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate dmux 0.5.2 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 6ca177e0f991c835414708d7a7734d846e71fed42ac8b0c1d450af7b9a4f3607
[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" "6ca177e0f991c835414708d7a7734d846e71fed42ac8b0c1d450af7b9a4f3607", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ca177e0f991c835414708d7a7734d846e71fed42ac8b0c1d450af7b9a4f3607", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ca177e0f991c835414708d7a7734d846e71fed42ac8b0c1d450af7b9a4f3607", kill_on_drop: false }`
[INFO] [stdout] 6ca177e0f991c835414708d7a7734d846e71fed42ac8b0c1d450af7b9a4f3607
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0313df3f0393881d92c090e7c4631cf3f16af7ab5e2f5f26d71d174eb2d57c2e
[INFO] running `Command { std: "docker" "start" "-a" "0313df3f0393881d92c090e7c4631cf3f16af7ab5e2f5f26d71d174eb2d57c2e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]     Checking tmux_interface v0.0.6
[INFO] [stderr]     Checking serde_test v0.8.23
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking serde_json v1.0.51
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking lexical-core v0.6.7
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking linked-hash-map v0.3.0
[INFO] [stderr]     Checking serde-hjson v0.9.1
[INFO] [stderr]     Checking globset v0.4.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking grep-cli v0.1.4
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking nom v5.1.1
[INFO] [stderr]     Checking config v0.10.1
[INFO] [stderr]  Documenting dmux v0.5.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.78s
[INFO] running `Command { std: "docker" "inspect" "0313df3f0393881d92c090e7c4631cf3f16af7ab5e2f5f26d71d174eb2d57c2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0313df3f0393881d92c090e7c4631cf3f16af7ab5e2f5f26d71d174eb2d57c2e", kill_on_drop: false }`
[INFO] [stdout] 0313df3f0393881d92c090e7c4631cf3f16af7ab5e2f5f26d71d174eb2d57c2e