[INFO] fetching crate cargo-watt 0.2.1...
[INFO] documenting cargo-watt-0.2.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate cargo-watt 0.2.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate cargo-watt 0.2.1 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 crates.io crate cargo-watt 0.2.1
[INFO] finished tweaking crates.io crate cargo-watt 0.2.1
[INFO] tweaked toml for crates.io crate cargo-watt 0.2.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate cargo-watt 0.2.1 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 toml_edit v0.2.0
[INFO] [stderr]   Downloaded ureq v1.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 37356b623591e58f69e760214529d63acb731ab9cb9444aaadabbed31158509e
[INFO] running `Command { std: "docker" "start" "-a" "37356b623591e58f69e760214529d63acb731ab9cb9444aaadabbed31158509e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37356b623591e58f69e760214529d63acb731ab9cb9444aaadabbed31158509e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37356b623591e58f69e760214529d63acb731ab9cb9444aaadabbed31158509e", kill_on_drop: false }`
[INFO] [stdout] 37356b623591e58f69e760214529d63acb731ab9cb9444aaadabbed31158509e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 3fee30b918452b957f15614c09fba24f557f82556175f0bcd469481f16aca274
[INFO] running `Command { std: "docker" "start" "-a" "3fee30b918452b957f15614c09fba24f557f82556175f0bcd469481f16aca274", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stderr]    Compiling cc v1.0.58
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking ascii v0.9.3
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]     Checking chunked_transfer v1.2.0
[INFO] [stderr]     Checking os_str_bytes v2.3.1
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking fastrand v1.3.3
[INFO] [stderr]     Checking qstring v0.7.2
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling hashbrown v0.8.1
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling indexmap v1.5.0
[INFO] [stderr]     Checking serde_json v1.0.56
[INFO] [stderr]     Checking combine v3.8.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking filetime v0.2.10
[INFO] [stderr]     Checking flate2 v1.0.16
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking tar v0.4.29
[INFO] [stderr]    Compiling ring v0.16.15
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]     Checking chrono v0.4.13
[INFO] [stderr]     Checking webpki v0.21.3
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]     Checking webpki-roots v0.19.0
[INFO] [stderr]     Checking rustls v0.17.0
[INFO] [stderr]     Checking ureq v1.3.0
[INFO] [stderr]     Checking toml_edit v0.2.0
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.1
[INFO] [stderr]     Checking clap v3.0.0-beta.1
[INFO] [stderr]  Documenting cargo-watt v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 06s
[INFO] running `Command { std: "docker" "inspect" "3fee30b918452b957f15614c09fba24f557f82556175f0bcd469481f16aca274", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fee30b918452b957f15614c09fba24f557f82556175f0bcd469481f16aca274", kill_on_drop: false }`
[INFO] [stdout] 3fee30b918452b957f15614c09fba24f557f82556175f0bcd469481f16aca274