[INFO] updating cached repository https://github.com/simmons/tokio-dtls-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 93c37e6a923857032523f00bad2a0192baa2e483
[INFO] documenting simmons/tokio-dtls-example against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimmons%2Ftokio-dtls-example" "/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/simmons/tokio-dtls-example 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/simmons/tokio-dtls-example
[INFO] finished tweaking git repo https://github.com/simmons/tokio-dtls-example
[INFO] tweaked toml for git repo https://github.com/simmons/tokio-dtls-example written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/simmons/tokio-dtls-example 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] [stdout] b161db0f51c6bae479655fe6660a2fe9599396c966e37e13168af6f2578e173d
[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" "b161db0f51c6bae479655fe6660a2fe9599396c966e37e13168af6f2578e173d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b161db0f51c6bae479655fe6660a2fe9599396c966e37e13168af6f2578e173d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b161db0f51c6bae479655fe6660a2fe9599396c966e37e13168af6f2578e173d", kill_on_drop: false }`
[INFO] [stdout] b161db0f51c6bae479655fe6660a2fe9599396c966e37e13168af6f2578e173d
[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] 22bcdac31797f9977b4dba41295615936c1dced2a84a712153a7fed4c5cec8f6
[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" "22bcdac31797f9977b4dba41295615936c1dced2a84a712153a7fed4c5cec8f6", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking crossbeam-utils v0.5.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling cc v1.0.22
[INFO] [stderr]    Compiling pkg-config v0.3.13
[INFO] [stderr]     Checking slab v0.4.1
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[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]     Checking termcolor v1.0.1
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[INFO] [stderr]     Checking foreign-types v0.3.2
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[INFO] [stderr]     Checking smallvec v0.6.5
[INFO] [stderr]     Checking tokio-timer v0.2.6
[INFO] [stderr]     Checking tokio-current-thread v0.1.1
[INFO] [stderr]     Checking lock_api v0.1.3
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking num_cpus v1.8.0
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[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking bytes v0.4.9
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[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
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[INFO] [stderr]     Checking mio v0.6.15
[INFO] [stderr]    Compiling openssl-sys v0.9.35
[INFO] [stderr]     Checking crossbeam-deque v0.6.1
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[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking mio-uds v0.6.6
[INFO] [stderr]     Checking tokio-codec v0.1.0
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[INFO] [stderr]    Compiling openssl v0.10.11
[INFO] [stderr]    Compiling native-tls v0.2.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.6
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[INFO] [stderr]     Checking tokio-openssl v0.2.1
[INFO] [stderr]     Checking tokio-tls v0.2.0
[INFO] [stderr]  Documenting tokio-dtls-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.59s
[INFO] running `Command { std: "docker" "inspect" "22bcdac31797f9977b4dba41295615936c1dced2a84a712153a7fed4c5cec8f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22bcdac31797f9977b4dba41295615936c1dced2a84a712153a7fed4c5cec8f6", kill_on_drop: false }`
[INFO] [stdout] 22bcdac31797f9977b4dba41295615936c1dced2a84a712153a7fed4c5cec8f6