[INFO] fetching crate preftool-derive 0.2.0...
[INFO] documenting preftool-derive-0.2.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate preftool-derive 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate preftool-derive 0.2.0 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate preftool-derive 0.2.0
[INFO] finished tweaking crates.io crate preftool-derive 0.2.0
[INFO] tweaked toml for crates.io crate preftool-derive 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded preftool-derive-core v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "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] 9232a9089df17c0218839c24b8ffc9a82f6a46021d997fbb4e788cf25fb5f50a
[INFO] running `Command { std: "docker" "start" "-a" "9232a9089df17c0218839c24b8ffc9a82f6a46021d997fbb4e788cf25fb5f50a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9232a9089df17c0218839c24b8ffc9a82f6a46021d997fbb4e788cf25fb5f50a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9232a9089df17c0218839c24b8ffc9a82f6a46021d997fbb4e788cf25fb5f50a", kill_on_drop: false }`
[INFO] [stdout] 9232a9089df17c0218839c24b8ffc9a82f6a46021d997fbb4e788cf25fb5f50a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "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] 5fe9d703e8d73d444eac2ae74094f23a27d5a78b877f9fa9826cda7c044ac8b0
[INFO] running `Command { std: "docker" "start" "-a" "5fe9d703e8d73d444eac2ae74094f23a27d5a78b877f9fa9826cda7c044ac8b0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking Inflector v0.11.4
[INFO] [stderr]     Checking darling_core v0.9.0
[INFO] [stderr]    Compiling darling_macro v0.9.0
[INFO] [stderr]     Checking darling v0.9.0
[INFO] [stderr]     Checking preftool-derive-core v0.2.0
[INFO] [stderr]  Documenting preftool-derive v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 44.75s
[INFO] running `Command { std: "docker" "inspect" "5fe9d703e8d73d444eac2ae74094f23a27d5a78b877f9fa9826cda7c044ac8b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fe9d703e8d73d444eac2ae74094f23a27d5a78b877f9fa9826cda7c044ac8b0", kill_on_drop: false }`
[INFO] [stdout] 5fe9d703e8d73d444eac2ae74094f23a27d5a78b877f9fa9826cda7c044ac8b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "RUSTFLAGS=--cap-lints=warn" "-e" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", 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] 452f2b11a9a33213937a79fcbfe19d43fd45af548650c6437fa350011fa572c5
[INFO] running `Command { std: "docker" "start" "-a" "452f2b11a9a33213937a79fcbfe19d43fd45af548650c6437fa350011fa572c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking Inflector v0.11.4
[INFO] [stderr]     Checking darling_core v0.9.0
[INFO] [stderr]    Compiling darling_macro v0.9.0
[INFO] [stderr]     Checking darling v0.9.0
[INFO] [stderr]     Checking preftool-derive-core v0.2.0
[INFO] [stderr]  Documenting preftool-derive v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.40s
[INFO] running `Command { std: "docker" "inspect" "452f2b11a9a33213937a79fcbfe19d43fd45af548650c6437fa350011fa572c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "452f2b11a9a33213937a79fcbfe19d43fd45af548650c6437fa350011fa572c5", kill_on_drop: false }`
[INFO] [stdout] 452f2b11a9a33213937a79fcbfe19d43fd45af548650c6437fa350011fa572c5