[INFO] cloning repository https://github.com/realityone/rsping
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/realityone/rsping" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frealityone%2Frsping", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frealityone%2Frsping'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 212a3c858d89d379cb221eb96fcadcb14efc12b5
[INFO] documenting realityone/rsping 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%2Frealityone%2Frsping" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/realityone/rsping 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/realityone/rsping
[INFO] finished tweaking git repo https://github.com/realityone/rsping
[INFO] tweaked toml for git repo https://github.com/realityone/rsping written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/realityone/rsping 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 backtrace-sys v0.1.15
[INFO] [stderr]   Downloaded pnet_macros_support v0.2.0
[INFO] [stderr]   Downloaded pnet_macros v0.15.0
[INFO] [stderr]   Downloaded ipnetwork v0.12.7
[INFO] [stderr]   Downloaded pnet v0.19.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 7aafb0a8b0f7a156d17862d06132e621c569bac1d2cdafaea0274b8d8fd357ec
[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" "7aafb0a8b0f7a156d17862d06132e621c569bac1d2cdafaea0274b8d8fd357ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7aafb0a8b0f7a156d17862d06132e621c569bac1d2cdafaea0274b8d8fd357ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7aafb0a8b0f7a156d17862d06132e621c569bac1d2cdafaea0274b8d8fd357ec", kill_on_drop: false }`
[INFO] [stdout] 7aafb0a8b0f7a156d17862d06132e621c569bac1d2cdafaea0274b8d8fd357ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 32b69ed4aff23dfd0db2c1a2719bf88df4d81605cf645b891bda80ae61d7f19c
[INFO] running `Command { std: "docker" "start" "-a" "32b69ed4aff23dfd0db2c1a2719bf88df4d81605cf645b891bda80ae61d7f19c", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.32
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling log v0.3.8
[INFO] [stderr]    Compiling lazy_static v0.2.9
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]    Compiling cc v1.0.1
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]     Checking ipnetwork v0.12.7
[INFO] [stderr]     Checking pnet_macros_support v0.2.0
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking syntex_pos v0.42.0
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]     Checking thread_local v0.3.4
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]     Checking syntex_errors v0.42.0
[INFO] [stderr]     Checking term_size v0.3.0
[INFO] [stderr]     Checking atty v0.2.3
[INFO] [stderr]     Checking textwrap v0.8.0
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]     Checking clap v2.26.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.15
[INFO] [stderr]     Checking syntex_syntax v0.42.0
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]     Checking backtrace v0.3.3
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]     Checking syntex v0.42.2
[INFO] [stderr]     Checking pnet_macros v0.15.0
[INFO] [stderr]    Compiling pnet v0.19.0
[INFO] [stderr]  Documenting rsping v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 21s
[INFO] running `Command { std: "docker" "inspect" "32b69ed4aff23dfd0db2c1a2719bf88df4d81605cf645b891bda80ae61d7f19c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32b69ed4aff23dfd0db2c1a2719bf88df4d81605cf645b891bda80ae61d7f19c", kill_on_drop: false }`
[INFO] [stdout] 32b69ed4aff23dfd0db2c1a2719bf88df4d81605cf645b891bda80ae61d7f19c