[INFO] cloning repository https://github.com/CoreRC/rcgenmsg
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CoreRC/rcgenmsg" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCoreRC%2Frcgenmsg", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCoreRC%2Frcgenmsg'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 30a891acc54f6c2c9edafc6d3219c7b3f5e0dd07
[INFO] documenting CoreRC/rcgenmsg against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCoreRC%2Frcgenmsg" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CoreRC/rcgenmsg on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CoreRC/rcgenmsg
[INFO] finished tweaking git repo https://github.com/CoreRC/rcgenmsg
[INFO] tweaked toml for git repo https://github.com/CoreRC/rcgenmsg written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/CoreRC/rcgenmsg already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded aho-corasick v0.6.5
[INFO] [stderr]   Downloaded handlebars v1.0.0-beta.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b4f27a6d44a018e0f1304c3cd4be7062bc743479ce1f6947630dcf64b396ed41
[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" "b4f27a6d44a018e0f1304c3cd4be7062bc743479ce1f6947630dcf64b396ed41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4f27a6d44a018e0f1304c3cd4be7062bc743479ce1f6947630dcf64b396ed41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4f27a6d44a018e0f1304c3cd4be7062bc743479ce1f6947630dcf64b396ed41", kill_on_drop: false }`
[INFO] [stdout] b4f27a6d44a018e0f1304c3cd4be7062bc743479ce1f6947630dcf64b396ed41
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5485b0d7a595c108437832ac62f5392dd1cdb455370c1f086dc203599634cf81
[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" "5485b0d7a595c108437832ac62f5392dd1cdb455370c1f086dc203599634cf81", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]    Compiling regex v1.0.1
[INFO] [stderr]    Compiling serde v1.0.69
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]     Checking lazy_static v1.0.1
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]     Checking itoa v0.4.1
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking cfg-if v0.1.4
[INFO] [stderr]    Compiling pest v1.0.6
[INFO] [stderr]     Checking argparse v0.2.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.6
[INFO] [stderr]     Checking log v0.4.3
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking regex-syntax v0.6.1
[INFO] [stderr]    Compiling pest_derive v1.0.7
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]    Compiling syn v0.14.4
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking aho-corasick v0.6.5
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]    Compiling serde_derive v1.0.69
[INFO] [stderr]     Checking Inflector v0.11.3
[INFO] [stderr]     Checking serde_json v1.0.22
[INFO] [stderr]     Checking handlebars v1.0.0-beta.2
[INFO] [stderr]  Documenting rcgenmsg v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.05s
[INFO] running `Command { std: "docker" "inspect" "5485b0d7a595c108437832ac62f5392dd1cdb455370c1f086dc203599634cf81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5485b0d7a595c108437832ac62f5392dd1cdb455370c1f086dc203599634cf81", kill_on_drop: false }`
[INFO] [stdout] 5485b0d7a595c108437832ac62f5392dd1cdb455370c1f086dc203599634cf81