[INFO] fetching crate from_tuple 0.1.2...
[INFO] documenting from_tuple-0.1.2 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate from_tuple 0.1.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate from_tuple 0.1.2 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate from_tuple 0.1.2
[INFO] finished tweaking crates.io crate from_tuple 0.1.2
[INFO] tweaked toml for crates.io crate from_tuple 0.1.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8ffe04e9f062a0da6ee0f5a022d022e20b06e6e09a506c636b1ccd06b214532
[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" "a8ffe04e9f062a0da6ee0f5a022d022e20b06e6e09a506c636b1ccd06b214532", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8ffe04e9f062a0da6ee0f5a022d022e20b06e6e09a506c636b1ccd06b214532", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8ffe04e9f062a0da6ee0f5a022d022e20b06e6e09a506c636b1ccd06b214532", kill_on_drop: false }`
[INFO] [stdout] a8ffe04e9f062a0da6ee0f5a022d022e20b06e6e09a506c636b1ccd06b214532
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e9ecd31bfdb8bafdb6821558c65a77d8d8905dda13ce20822b670a0dd8863e5
[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" "4e9ecd31bfdb8bafdb6821558c65a77d8d8905dda13ce20822b670a0dd8863e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]  Documenting from_tuple v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.58s
[INFO] running `Command { std: "docker" "inspect" "4e9ecd31bfdb8bafdb6821558c65a77d8d8905dda13ce20822b670a0dd8863e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e9ecd31bfdb8bafdb6821558c65a77d8d8905dda13ce20822b670a0dd8863e5", kill_on_drop: false }`
[INFO] [stdout] 4e9ecd31bfdb8bafdb6821558c65a77d8d8905dda13ce20822b670a0dd8863e5
