[INFO] fetching crate antr 0.4.0...
[INFO] documenting antr-0.4.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate antr 0.4.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate antr 0.4.0 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 crates.io crate antr 0.4.0
[INFO] finished tweaking crates.io crate antr 0.4.0
[INFO] tweaked toml for crates.io crate antr 0.4.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate antr 0.4.0 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] c6d7e07be5c05c90996bdd4d7f120b42015d4e3aa76f1207f39d6d45bbcdcb90
[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" "c6d7e07be5c05c90996bdd4d7f120b42015d4e3aa76f1207f39d6d45bbcdcb90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6d7e07be5c05c90996bdd4d7f120b42015d4e3aa76f1207f39d6d45bbcdcb90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6d7e07be5c05c90996bdd4d7f120b42015d4e3aa76f1207f39d6d45bbcdcb90", kill_on_drop: false }`
[INFO] [stdout] c6d7e07be5c05c90996bdd4d7f120b42015d4e3aa76f1207f39d6d45bbcdcb90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d1e33f2d5417c69b5800dee21881e8d2bdabbe3386a0b5bfaf318a1b2bf1c37a
[INFO] running `Command { std: "docker" "start" "-a" "d1e33f2d5417c69b5800dee21881e8d2bdabbe3386a0b5bfaf318a1b2bf1c37a", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.15
[INFO] [stderr]    Compiling cc v1.0.45
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking walkdir v2.2.9
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.7
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling openssl-sys v0.9.49
[INFO] [stderr]    Compiling libssh2-sys v0.2.11
[INFO] [stderr]    Compiling libgit2-sys v0.9.0
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]     Checking notify v4.0.13
[INFO] [stderr]     Checking git2 v0.10.0
[INFO] [stderr]  Documenting antr v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.97s
[INFO] running `Command { std: "docker" "inspect" "d1e33f2d5417c69b5800dee21881e8d2bdabbe3386a0b5bfaf318a1b2bf1c37a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1e33f2d5417c69b5800dee21881e8d2bdabbe3386a0b5bfaf318a1b2bf1c37a", kill_on_drop: false }`
[INFO] [stdout] d1e33f2d5417c69b5800dee21881e8d2bdabbe3386a0b5bfaf318a1b2bf1c37a