[INFO] cloning repository https://github.com/proulxsamuel/synacor-challenge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/proulxsamuel/synacor-challenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fproulxsamuel%2Fsynacor-challenge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fproulxsamuel%2Fsynacor-challenge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 02f1575f353b9526054e42149f503af5210a37fb
[INFO] documenting proulxsamuel/synacor-challenge 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%2Fproulxsamuel%2Fsynacor-challenge" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/proulxsamuel/synacor-challenge 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/proulxsamuel/synacor-challenge
[INFO] finished tweaking git repo https://github.com/proulxsamuel/synacor-challenge
[INFO] tweaked toml for git repo https://github.com/proulxsamuel/synacor-challenge written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/proulxsamuel/synacor-challenge 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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] b8925c3c36f967aca4e80e32ae7fb3a68120d3f001f7be2a887f819925396eb3
[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" "b8925c3c36f967aca4e80e32ae7fb3a68120d3f001f7be2a887f819925396eb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8925c3c36f967aca4e80e32ae7fb3a68120d3f001f7be2a887f819925396eb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8925c3c36f967aca4e80e32ae7fb3a68120d3f001f7be2a887f819925396eb3", kill_on_drop: false }`
[INFO] [stdout] b8925c3c36f967aca4e80e32ae7fb3a68120d3f001f7be2a887f819925396eb3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 1f2d672c2700b16257706cd6ce92e81e2df871bc8241028ebe57be7f2a12b4b9
[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" "1f2d672c2700b16257706cd6ce92e81e2df871bc8241028ebe57be7f2a12b4b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex v1.0.2
[INFO] [stderr]    Compiling rayon v1.0.2
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking aho-corasick v0.6.6
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking synacor_challenge v1.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting synacor_challenge v1.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.34s
[INFO] running `Command { std: "docker" "inspect" "1f2d672c2700b16257706cd6ce92e81e2df871bc8241028ebe57be7f2a12b4b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f2d672c2700b16257706cd6ce92e81e2df871bc8241028ebe57be7f2a12b4b9", kill_on_drop: false }`
[INFO] [stdout] 1f2d672c2700b16257706cd6ce92e81e2df871bc8241028ebe57be7f2a12b4b9