[INFO] cloning repository https://github.com/dwango/mizumochi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dwango/mizumochi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdwango%2Fmizumochi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdwango%2Fmizumochi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3d552178a39fe07540e8c70c3d945bc0d17f2288
[INFO] documenting dwango/mizumochi 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%2Fdwango%2Fmizumochi" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dwango/mizumochi 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/dwango/mizumochi
[INFO] finished tweaking git repo https://github.com/dwango/mizumochi
[INFO] tweaked toml for git repo https://github.com/dwango/mizumochi written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/dwango/mizumochi 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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] b9670b8456b36b0c1d91e71e5f7486a73a4c22383e6def2b7ae6ae22ac185af9
[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" "b9670b8456b36b0c1d91e71e5f7486a73a4c22383e6def2b7ae6ae22ac185af9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9670b8456b36b0c1d91e71e5f7486a73a4c22383e6def2b7ae6ae22ac185af9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9670b8456b36b0c1d91e71e5f7486a73a4c22383e6def2b7ae6ae22ac185af9", kill_on_drop: false }`
[INFO] [stdout] b9670b8456b36b0c1d91e71e5f7486a73a4c22383e6def2b7ae6ae22ac185af9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] d05215d908e324c10de780987121c0ca1d98970170d5ef53a6d25addeef2aedb
[INFO] running `Command { std: "docker" "start" "-a" "d05215d908e324c10de780987121c0ca1d98970170d5ef53a6d25addeef2aedb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.2.41
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling serde v1.0.64
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]     Checking slog v2.2.3
[INFO] [stderr]     Checking nom v2.2.1
[INFO] [stderr]     Checking splay_tree v0.2.10
[INFO] [stderr]     Checking nbchan v0.1.2
[INFO] [stderr]     Checking atomic_immut v0.1.4
[INFO] [stderr]     Checking thread-scoped v1.0.2
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking factory v0.1.1
[INFO] [stderr]     Checking term v0.5.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.4
[INFO] [stderr]    Compiling fuse v0.3.1
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.2
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking atty v0.2.10
[INFO] [stderr]     Checking isatty v0.1.8
[INFO] [stderr]     Checking slog-async v2.3.0
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]     Checking mio v0.6.14
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]    Compiling procinfo v0.4.2
[INFO] [stderr]    Compiling syn v0.14.1
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking fibers v0.1.10
[INFO] [stderr]     Checking chrono v0.4.2
[INFO] [stderr]     Checking slog-term v2.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.64
[INFO] [stderr]     Checking serde_json v1.0.19
[INFO] [stderr]    Compiling trackable_derive v0.1.3
[INFO] [stderr]     Checking trackable v0.2.23
[INFO] [stderr]     Checking bytecodec v0.4.4
[INFO] [stderr]     Checking prometrics v0.1.11
[INFO] [stderr]     Checking httpcodec v0.2.2
[INFO] [stderr]     Checking fibers_http_server v0.2.0
[INFO] [stderr]  Documenting mizumochi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 48s
[INFO] running `Command { std: "docker" "inspect" "d05215d908e324c10de780987121c0ca1d98970170d5ef53a6d25addeef2aedb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d05215d908e324c10de780987121c0ca1d98970170d5ef53a6d25addeef2aedb", kill_on_drop: false }`
[INFO] [stdout] d05215d908e324c10de780987121c0ca1d98970170d5ef53a6d25addeef2aedb