[INFO] cloning repository https://github.com/antono/ntrace
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/antono/ntrace" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fantono%2Fntrace", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fantono%2Fntrace'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 41fe19ef7116fd13e9dc3dc5a7e262f791871e07
[INFO] documenting antono/ntrace against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fantono%2Fntrace" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/antono/ntrace on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/antono/ntrace
[INFO] finished tweaking git repo https://github.com/antono/ntrace
[INFO] tweaked toml for git repo https://github.com/antono/ntrace written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/antono/ntrace already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c65c680417ac1c64fdc7c1669eaa43aa521f1e6b7ba9ca38ae80a82375f0a85
[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" "7c65c680417ac1c64fdc7c1669eaa43aa521f1e6b7ba9ca38ae80a82375f0a85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c65c680417ac1c64fdc7c1669eaa43aa521f1e6b7ba9ca38ae80a82375f0a85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c65c680417ac1c64fdc7c1669eaa43aa521f1e6b7ba9ca38ae80a82375f0a85", kill_on_drop: false }`
[INFO] [stdout] 7c65c680417ac1c64fdc7c1669eaa43aa521f1e6b7ba9ca38ae80a82375f0a85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b7ec1c07a0ceb16f06d05d99a1b19107723023f128fb123dcd6928dc9923a67f
[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" "b7ec1c07a0ceb16f06d05d99a1b19107723023f128fb123dcd6928dc9923a67f", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.37
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking futures v0.1.18
[INFO] [stderr]     Checking lazycell v0.6.0
[INFO] [stderr]     Checking strsim v0.5.2
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking libc v0.1.12
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking slab v0.4.0
[INFO] [stderr]    Compiling pcap v0.7.0
[INFO] [stderr]     Checking scoped-tls v0.1.0
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]     Checking byteorder v0.3.13
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking ansi_term v0.10.2
[INFO] [stderr]     Checking bitflags v1.0.1
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking pcap v0.4.2
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]     Checking atty v0.2.6
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking clap v2.30.0
[INFO] [stderr]     Checking bytes v0.4.6
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking mio v0.6.13
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking tokio-io v0.1.5
[INFO] [stderr]     Checking docopt v0.6.86
[INFO] [stderr]     Checking tokio-core v0.1.12
[INFO] [stderr]     Checking rshark v0.0.1
[INFO] [stderr]  Documenting ntrace v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.88s
[INFO] running `Command { std: "docker" "inspect" "b7ec1c07a0ceb16f06d05d99a1b19107723023f128fb123dcd6928dc9923a67f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7ec1c07a0ceb16f06d05d99a1b19107723023f128fb123dcd6928dc9923a67f", kill_on_drop: false }`
[INFO] [stdout] b7ec1c07a0ceb16f06d05d99a1b19107723023f128fb123dcd6928dc9923a67f