[INFO] cloning repository https://github.com/stepanov-denis/ups-low-battery-level
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/stepanov-denis/ups-low-battery-level" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstepanov-denis%2Fups-low-battery-level", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstepanov-denis%2Fups-low-battery-level'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cc876b2ca1b3c76e39e5333fd847d5c129ff087a
[INFO] documenting stepanov-denis/ups-low-battery-level against 1.99.0-beta.8 for beta-rustdoc-1.100-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstepanov-denis%2Fups-low-battery-level" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/stepanov-denis/ups-low-battery-level
[INFO] finished tweaking git repo https://github.com/stepanov-denis/ups-low-battery-level
[INFO] tweaked toml for git repo https://github.com/stepanov-denis/ups-low-battery-level written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/stepanov-denis/ups-low-battery-level on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/stepanov-denis/ups-low-battery-level already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 523fc7c61a9c2a3435fffe6781a9c11f73e9db872a6cd1e9f6f5afcef08ecd1a
[INFO] running `Command { std: "docker" "start" "523fc7c61a9c2a3435fffe6781a9c11f73e9db872a6cd1e9f6f5afcef08ecd1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "523fc7c61a9c2a3435fffe6781a9c11f73e9db872a6cd1e9f6f5afcef08ecd1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "523fc7c61a9c2a3435fffe6781a9c11f73e9db872a6cd1e9f6f5afcef08ecd1a" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "523fc7c61a9c2a3435fffe6781a9c11f73e9db872a6cd1e9f6f5afcef08ecd1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "523fc7c61a9c2a3435fffe6781a9c11f73e9db872a6cd1e9f6f5afcef08ecd1a" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling futures-macro v0.3.17
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[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling tokio v1.12.0
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]     Checking futures-io v0.3.17
[INFO] [stderr]     Checking tracing-core v0.1.21
[INFO] [stderr]     Checking crypto-mac v0.11.1
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[INFO] [stderr]     Checking stringprep v0.1.2
[INFO] [stderr]     Checking hmac v0.11.0
[INFO] [stderr]     Checking instant v0.1.11
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]     Checking siphasher v0.3.7
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]     Checking gimli v0.25.0
[INFO] [stderr]    Compiling encoding_rs v0.8.28
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[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking online v3.0.1
[INFO] [stderr]     Checking phf_shared v0.10.0
[INFO] [stderr]     Checking want v0.3.0
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[INFO] [stderr]     Checking serde_urlencoded v0.7.0
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[INFO] [stderr]     Checking reqwest v0.11.5
[INFO] [stderr]  Documenting ups-low-battery-level v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.05s
[INFO] [stderr]    Generated /opt/rustwide/target/doc/ups_low_battery_level/index.html
[INFO] running `Command { std: "docker" "inspect" "523fc7c61a9c2a3435fffe6781a9c11f73e9db872a6cd1e9f6f5afcef08ecd1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "523fc7c61a9c2a3435fffe6781a9c11f73e9db872a6cd1e9f6f5afcef08ecd1a", kill_on_drop: false }`
[INFO] [stdout] 523fc7c61a9c2a3435fffe6781a9c11f73e9db872a6cd1e9f6f5afcef08ecd1a