[INFO] cloning repository https://github.com/jcaesar/nvml-prometheus-exporter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jcaesar/nvml-prometheus-exporter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjcaesar%2Fnvml-prometheus-exporter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjcaesar%2Fnvml-prometheus-exporter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0f57f7a07f4be69067877d180c9288736ce5fce5
[INFO] documenting jcaesar/nvml-prometheus-exporter 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%2Fjcaesar%2Fnvml-prometheus-exporter" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jcaesar/nvml-prometheus-exporter 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/jcaesar/nvml-prometheus-exporter
[INFO] finished tweaking git repo https://github.com/jcaesar/nvml-prometheus-exporter
[INFO] tweaked toml for git repo https://github.com/jcaesar/nvml-prometheus-exporter written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/jcaesar/nvml-prometheus-exporter 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 procinfo v0.3.1
[INFO] [stderr]   Downloaded protobuf v2.10.1
[INFO] [stderr]   Downloaded wrapcenum-derive v0.3.0
[INFO] [stderr]   Downloaded prometheus_exporter v0.4.1
[INFO] [stderr]   Downloaded nvml-wrapper-sys v0.4.1
[INFO] [stderr]   Downloaded nvml-wrapper v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 34f5fb35c5527e663f55cd7f2acf7d61b97c561b27bce2b47c6397879bf222a5
[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" "34f5fb35c5527e663f55cd7f2acf7d61b97c561b27bce2b47c6397879bf222a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "34f5fb35c5527e663f55cd7f2acf7d61b97c561b27bce2b47c6397879bf222a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34f5fb35c5527e663f55cd7f2acf7d61b97c561b27bce2b47c6397879bf222a5", kill_on_drop: false }`
[INFO] [stdout] 34f5fb35c5527e663f55cd7f2acf7d61b97c561b27bce2b47c6397879bf222a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 4e9b8b31b06ee878ee7fae50bbac4a479f337960e1a6fa4b2f02d2503ae093b7
[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" "4e9b8b31b06ee878ee7fae50bbac4a479f337960e1a6fa4b2f02d2503ae093b7", 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]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling protobuf v2.10.1
[INFO] [stderr]    Compiling nvml-wrapper-sys v0.4.1
[INFO] [stderr]    Compiling prometheus v0.7.0
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking lock_api v0.3.3
[INFO] [stderr]     Checking tokio-sync v0.1.7
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]    Compiling wrapcenum-derive v0.3.0
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]    Compiling procinfo v0.3.1
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking tokio-executor v0.1.9
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.17
[INFO] [stderr]     Checking tokio-timer v0.2.12
[INFO] [stderr]     Checking tokio-current-thread v0.1.6
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking tokio-reactor v0.1.11
[INFO] [stderr]     Checking backtrace v0.3.42
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking error-chain v0.12.1
[INFO] [stderr]     Checking nvml-wrapper v0.5.0
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]    Compiling syn-mid v0.4.0
[INFO] [stderr]     Checking hyper v0.12.35
[INFO] [stderr]    Compiling rustversion v1.0.1
[INFO] [stderr]     Checking prometheus_exporter v0.4.1
[INFO] [stderr]    Compiling proc-macro-error v0.4.4
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.3
[INFO] [stderr]    Compiling structopt-derive v0.4.0
[INFO] [stderr]     Checking structopt v0.3.7
[INFO] [stderr]  Documenting nvml-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.44s
[INFO] running `Command { std: "docker" "inspect" "4e9b8b31b06ee878ee7fae50bbac4a479f337960e1a6fa4b2f02d2503ae093b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e9b8b31b06ee878ee7fae50bbac4a479f337960e1a6fa4b2f02d2503ae093b7", kill_on_drop: false }`
[INFO] [stdout] 4e9b8b31b06ee878ee7fae50bbac4a479f337960e1a6fa4b2f02d2503ae093b7