[INFO] cloning repository https://github.com/asayers/tailsrv
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/asayers/tailsrv" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasayers%2Ftailsrv", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasayers%2Ftailsrv'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 91f66f2d4c35bddf17872643c4d7a8f705a1116e
[INFO] documenting asayers/tailsrv against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasayers%2Ftailsrv" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/asayers/tailsrv on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/asayers/tailsrv
[INFO] finished tweaking git repo https://github.com/asayers/tailsrv
[INFO] tweaked toml for git repo https://github.com/asayers/tailsrv written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/asayers/tailsrv already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 29c5fb0b6dda85d3a96edc29549792ac7175250f7a43820a84831177320d2d9e
[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" "29c5fb0b6dda85d3a96edc29549792ac7175250f7a43820a84831177320d2d9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "29c5fb0b6dda85d3a96edc29549792ac7175250f7a43820a84831177320d2d9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29c5fb0b6dda85d3a96edc29549792ac7175250f7a43820a84831177320d2d9e", kill_on_drop: false }`
[INFO] [stdout] 29c5fb0b6dda85d3a96edc29549792ac7175250f7a43820a84831177320d2d9e
[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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2049d68ef294d3bde67cc5c696f4dd8aea7732ac0595127709fb66e303d6cd40
[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" "2049d68ef294d3bde67cc5c696f4dd8aea7732ac0595127709fb66e303d6cd40", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.33
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking log v0.3.8
[INFO] [stderr]    Compiling cc v1.0.3
[INFO] [stderr]     Checking regex-syntax v0.4.1
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking lazycell v0.5.1
[INFO] [stderr]     Checking same-file v1.0.0
[INFO] [stderr]     Checking rustc-demangle v0.1.5
[INFO] [stderr]     Checking bitflags v0.8.2
[INFO] [stderr]     Checking lazycell v0.4.0
[INFO] [stderr]     Checking crossbeam v0.2.10
[INFO] [stderr]     Checking slab v0.4.0
[INFO] [stderr]     Checking integer-encoding v1.0.4
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking walkdir v2.0.1
[INFO] [stderr]     Checking thread_local v0.3.4
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking net2 v0.2.31
[INFO] [stderr]     Checking iovec v0.1.1
[INFO] [stderr]     Checking atty v0.2.3
[INFO] [stderr]     Checking memchr v2.0.0
[INFO] [stderr]     Checking inotify-sys v0.1.0 (https://github.com/asayers/inotify-rs#0a59430f)
[INFO] [stderr]     Checking nix v0.9.0
[INFO] [stderr]     Checking memmap v0.6.1
[INFO] [stderr]     Checking fs2 v0.4.2
[INFO] [stderr]     Checking clap v2.27.1
[INFO] [stderr]     Checking loggerv v0.5.1
[INFO] [stderr]     Checking aho-corasick v0.6.3
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking mio v0.6.11
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]     Checking regex v0.2.2
[INFO] [stderr]     Checking mio-more v0.1.0
[INFO] [stderr]     Checking inotify v0.4.1 (https://github.com/asayers/inotify-rs#0a59430f)
[INFO] [stderr]     Checking globset v0.2.1
[INFO] [stderr]     Checking ignore v0.3.1
[INFO] [stderr]     Checking backtrace v0.3.4
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]  Documenting tailsrv v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.73s
[INFO] running `Command { std: "docker" "inspect" "2049d68ef294d3bde67cc5c696f4dd8aea7732ac0595127709fb66e303d6cd40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2049d68ef294d3bde67cc5c696f4dd8aea7732ac0595127709fb66e303d6cd40", kill_on_drop: false }`
[INFO] [stdout] 2049d68ef294d3bde67cc5c696f4dd8aea7732ac0595127709fb66e303d6cd40