[INFO] fetching crate tracing-timing 0.4.3...
[INFO] documenting tracing-timing-0.4.3 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate tracing-timing 0.4.3 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate tracing-timing 0.4.3 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 tracing-timing 0.4.3
[INFO] finished tweaking crates.io crate tracing-timing 0.4.3
[INFO] tweaked toml for crates.io crate tracing-timing 0.4.3 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate tracing-timing 0.4.3 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]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-serde v0.1.0
[INFO] [stderr]   Downloaded tracing-subscriber v0.2.0
[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] 3d821988b31f8d564dd473ba48f242aa3e22d9843262f1db3f1e052af9e90abb
[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" "3d821988b31f8d564dd473ba48f242aa3e22d9843262f1db3f1e052af9e90abb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d821988b31f8d564dd473ba48f242aa3e22d9843262f1db3f1e052af9e90abb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d821988b31f8d564dd473ba48f242aa3e22d9843262f1db3f1e052af9e90abb", kill_on_drop: false }`
[INFO] [stdout] 3d821988b31f8d564dd473ba48f242aa3e22d9843262f1db3f1e052af9e90abb
[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] 99036e280906f0f3ba534ee9375b7c2a1a8c2df97c814f922f0423201a60107e
[INFO] running `Command { std: "docker" "start" "-a" "99036e280906f0f3ba534ee9375b7c2a1a8c2df97c814f922f0423201a60107e", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]     Checking regex-syntax v0.6.14
[INFO] [stderr]    Compiling doc-comment v0.3.1
[INFO] [stderr]     Checking tracing-core v0.1.9
[INFO] [stderr]     Checking sharded-slab v0.0.8
[INFO] [stderr]     Checking quanta v0.3.1
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]     Checking serde_json v1.0.46
[INFO] [stderr]     Checking crossbeam-channel v0.4.0
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking tracing-log v0.1.1
[INFO] [stderr]     Checking tracing-serde v0.1.0
[INFO] [stderr]     Checking aho-corasick v0.7.8
[INFO] [stderr]     Checking nom v5.1.0
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]     Checking hdrhistogram v7.0.0
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking tracing-subscriber v0.2.0
[INFO] [stderr]  Documenting tracing-timing v0.4.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.21s
[INFO] running `Command { std: "docker" "inspect" "99036e280906f0f3ba534ee9375b7c2a1a8c2df97c814f922f0423201a60107e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99036e280906f0f3ba534ee9375b7c2a1a8c2df97c814f922f0423201a60107e", kill_on_drop: false }`
[INFO] [stdout] 99036e280906f0f3ba534ee9375b7c2a1a8c2df97c814f922f0423201a60107e