[INFO] cloning repository https://github.com/pnehrer/hyper-flush-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pnehrer/hyper-flush-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpnehrer%2Fhyper-flush-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpnehrer%2Fhyper-flush-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2dd6c51408087ce48d92bdd3ab0bfa3749332c25
[INFO] documenting pnehrer/hyper-flush-demo against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpnehrer%2Fhyper-flush-demo" "/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/pnehrer/hyper-flush-demo 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/pnehrer/hyper-flush-demo
[INFO] finished tweaking git repo https://github.com/pnehrer/hyper-flush-demo
[INFO] tweaked toml for git repo https://github.com/pnehrer/hyper-flush-demo written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/pnehrer/hyper-flush-demo 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] 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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c90b21578c85e7efd0a066b3e22ad44a0570a95c16356321a87f362635991b04
[INFO] running `Command { std: "docker" "start" "-a" "c90b21578c85e7efd0a066b3e22ad44a0570a95c16356321a87f362635991b04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c90b21578c85e7efd0a066b3e22ad44a0570a95c16356321a87f362635991b04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c90b21578c85e7efd0a066b3e22ad44a0570a95c16356321a87f362635991b04", kill_on_drop: false }`
[INFO] [stdout] c90b21578c85e7efd0a066b3e22ad44a0570a95c16356321a87f362635991b04
[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] 16e2ebfeccc874137fa6ee42396988c5c509eeb04881a87ca6bd9b84e353de83
[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" "16e2ebfeccc874137fa6ee42396988c5c509eeb04881a87ca6bd9b84e353de83", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking termcolor v1.0.5
[INFO] [stderr]     Checking tower-service v0.3.0-alpha.2
[INFO] [stderr]     Checking retain_mut v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking lock_api v0.3.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking tracing-core v0.1.7
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking http v0.1.19
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking http-body v0.2.0-alpha.3
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking pretty_env_logger v0.3.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling pin-project-internal v0.4.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.4
[INFO] [stderr]    Compiling tokio-macros v0.2.0-alpha.6
[INFO] [stderr]    Compiling futures-select-macro-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling futures-join-macro-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking tracing v0.1.9
[INFO] [stderr]     Checking pin-project v0.4.5
[INFO] [stderr]     Checking tokio-io v0.2.0-alpha.6
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking tokio-codec v0.2.0-alpha.6
[INFO] [stderr]     Checking tower-make v0.3.0-alpha.2a
[INFO] [stderr]     Checking tokio-sync v0.2.0-alpha.6
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking tokio-executor v0.2.0-alpha.6
[INFO] [stderr]     Checking h2 v0.2.0-alpha.3
[INFO] [stderr]     Checking tokio-fs v0.2.0-alpha.6
[INFO] [stderr]     Checking tokio-net v0.2.0-alpha.6
[INFO] [stderr]     Checking tokio-timer v0.3.0-alpha.6
[INFO] [stderr]     Checking tokio v0.2.0-alpha.6
[INFO] [stderr]     Checking hyper v0.13.0-alpha.4
[INFO] [stderr]  Documenting hyper-flush-demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 07s
[INFO] running `Command { std: "docker" "inspect" "16e2ebfeccc874137fa6ee42396988c5c509eeb04881a87ca6bd9b84e353de83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16e2ebfeccc874137fa6ee42396988c5c509eeb04881a87ca6bd9b84e353de83", kill_on_drop: false }`
[INFO] [stdout] 16e2ebfeccc874137fa6ee42396988c5c509eeb04881a87ca6bd9b84e353de83