[INFO] fetching crate iftree 1.0.3...
[INFO] documenting iftree-1.0.3 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate iftree 1.0.3 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate iftree 1.0.3 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 iftree 1.0.3
[INFO] finished tweaking crates.io crate iftree 1.0.3
[INFO] tweaked toml for crates.io crate iftree 1.0.3 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate iftree 1.0.3 already has a lockfile, it will not be regenerated
[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 headers v0.3.6
[INFO] [stderr]   Downloaded block-buffer v0.10.1
[INFO] [stderr]   Downloaded handlebars v4.2.1
[INFO] [stderr]   Downloaded include-flate v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 85cb5882c0cf0faa457b5d58f125647089e0ecbdb8d213eda2bea0e215f7d127
[INFO] running `Command { std: "docker" "start" "-a" "85cb5882c0cf0faa457b5d58f125647089e0ecbdb8d213eda2bea0e215f7d127", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "85cb5882c0cf0faa457b5d58f125647089e0ecbdb8d213eda2bea0e215f7d127", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85cb5882c0cf0faa457b5d58f125647089e0ecbdb8d213eda2bea0e215f7d127", kill_on_drop: false }`
[INFO] [stdout] 85cb5882c0cf0faa457b5d58f125647089e0ecbdb8d213eda2bea0e215f7d127
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 34513a29b85808c64c17fc481c2487f7cc8bd08b4279de189b5423c5b16adfb3
[INFO] running `Command { std: "docker" "start" "-a" "34513a29b85808c64c17fc481c2487f7cc8bd08b4279de189b5423c5b16adfb3", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling crossbeam-utils v0.8.7
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking proc-macro2 v1.0.36
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]     Checking globset v0.4.8
[INFO] [stderr]     Checking ignore v0.4.18
[INFO] [stderr]     Checking serde v1.0.136
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]  Documenting iftree v1.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 44.84s
[INFO] running `Command { std: "docker" "inspect" "34513a29b85808c64c17fc481c2487f7cc8bd08b4279de189b5423c5b16adfb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34513a29b85808c64c17fc481c2487f7cc8bd08b4279de189b5423c5b16adfb3", kill_on_drop: false }`
[INFO] [stdout] 34513a29b85808c64c17fc481c2487f7cc8bd08b4279de189b5423c5b16adfb3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=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] [stdout] cf88898008f4cf9a58e521ca7052dab931ff7df51873f4754de603ffb9de2fb6
[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" "cf88898008f4cf9a58e521ca7052dab931ff7df51873f4754de603ffb9de2fb6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling crossbeam-utils v0.8.7
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking quote v1.0.15
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking globset v0.4.8
[INFO] [stderr]     Checking ignore v0.4.18
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]  Documenting iftree v1.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.07s
[INFO] running `Command { std: "docker" "inspect" "cf88898008f4cf9a58e521ca7052dab931ff7df51873f4754de603ffb9de2fb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf88898008f4cf9a58e521ca7052dab931ff7df51873f4754de603ffb9de2fb6", kill_on_drop: false }`
[INFO] [stdout] cf88898008f4cf9a58e521ca7052dab931ff7df51873f4754de603ffb9de2fb6