[INFO] cloning repository https://github.com/iovxw/y2138
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iovxw/y2138" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiovxw%2Fy2138", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiovxw%2Fy2138'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3d29084f74f5278dc15eb71594c059e339ea0327
[INFO] documenting iovxw/y2138 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%2Fiovxw%2Fy2138" "/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/iovxw/y2138 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/iovxw/y2138
[INFO] finished tweaking git repo https://github.com/iovxw/y2138
[INFO] tweaked toml for git repo https://github.com/iovxw/y2138 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/iovxw/y2138 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 async-compression v0.3.1
[INFO] [stderr]   Downloaded png v0.16.1
[INFO] [stderr]   Downloaded image v0.23.2
[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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", 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] f52cefa43ad539a362df325ae1d39352281133ae2a725cc40e5dd1d61db8ad7d
[INFO] running `Command { std: "docker" "start" "-a" "f52cefa43ad539a362df325ae1d39352281133ae2a725cc40e5dd1d61db8ad7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f52cefa43ad539a362df325ae1d39352281133ae2a725cc40e5dd1d61db8ad7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f52cefa43ad539a362df325ae1d39352281133ae2a725cc40e5dd1d61db8ad7d", kill_on_drop: false }`
[INFO] [stdout] f52cefa43ad539a362df325ae1d39352281133ae2a725cc40e5dd1d61db8ad7d
[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" "+beta-2020-08-29" "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] a25e52dc00b1b59a092c34e56592f11b8c30382419098bfdca6db584d5aaa30f
[INFO] running `Command { std: "docker" "start" "-a" "a25e52dc00b1b59a092c34e56592f11b8c30382419098bfdca6db584d5aaa30f", kill_on_drop: false }`
[INFO] [stderr]     Checking arc-swap v0.4.5
[INFO] [stderr]    Compiling serde v1.0.105
[INFO] [stderr]     Checking futures-task v0.3.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]     Checking deflate v0.8.3
[INFO] [stderr]     Checking openssl-sys v0.9.54
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling serde_derive v1.0.105
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking async-compression v0.3.1
[INFO] [stderr]     Checking png v0.16.1
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking openssl v0.10.28
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking tokio v0.2.13
[INFO] [stderr]     Checking native-tls v0.2.4
[INFO] [stderr]     Checking jpeg-decoder v0.1.18
[INFO] [stderr]     Checking image v0.23.2
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking tokio-tls v0.3.0
[INFO] [stderr]     Checking h2 v0.2.2
[INFO] [stderr]     Checking hyper v0.13.3
[INFO] [stderr]     Checking hyper-tls v0.4.1
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking reqwest v0.10.4
[INFO] [stderr]  Documenting y2138 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 53.14s
[INFO] running `Command { std: "docker" "inspect" "a25e52dc00b1b59a092c34e56592f11b8c30382419098bfdca6db584d5aaa30f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a25e52dc00b1b59a092c34e56592f11b8c30382419098bfdca6db584d5aaa30f", kill_on_drop: false }`
[INFO] [stdout] a25e52dc00b1b59a092c34e56592f11b8c30382419098bfdca6db584d5aaa30f