[INFO] cloning repository https://github.com/zacstewart/comm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zacstewart/comm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzacstewart%2Fcomm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzacstewart%2Fcomm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 765fab755afed77298bd7cda8e336cb0821ea7d3
[INFO] documenting zacstewart/comm 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%2Fzacstewart%2Fcomm" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zacstewart/comm 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/zacstewart/comm
[INFO] finished tweaking git repo https://github.com/zacstewart/comm
[INFO] tweaked toml for git repo https://github.com/zacstewart/comm written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/zacstewart/comm 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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 64001d8dd3900b052879263cedbae200491be9487db9a473e6335d6e41a53227
[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" "64001d8dd3900b052879263cedbae200491be9487db9a473e6335d6e41a53227", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64001d8dd3900b052879263cedbae200491be9487db9a473e6335d6e41a53227", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64001d8dd3900b052879263cedbae200491be9487db9a473e6335d6e41a53227", kill_on_drop: false }`
[INFO] [stdout] 64001d8dd3900b052879263cedbae200491be9487db9a473e6335d6e41a53227
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] f39546f4321f22f6b2151edb04ca8090d2655d9674f8970929df599cf78df31a
[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" "f39546f4321f22f6b2151edb04ca8090d2655d9674f8970929df599cf78df31a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]    Compiling protobuf v1.7.4
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking bytes v0.3.0
[INFO] [stderr]     Checking slab v0.1.3
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]    Compiling protoc v2.2.0
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling comm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking num-iter v0.1.37
[INFO] [stderr]     Checking miow v0.1.5
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking stun v0.0.2
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking mio v0.5.1
[INFO] [stderr]  Documenting comm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.28s
[INFO] running `Command { std: "docker" "inspect" "f39546f4321f22f6b2151edb04ca8090d2655d9674f8970929df599cf78df31a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f39546f4321f22f6b2151edb04ca8090d2655d9674f8970929df599cf78df31a", kill_on_drop: false }`
[INFO] [stdout] f39546f4321f22f6b2151edb04ca8090d2655d9674f8970929df599cf78df31a