[INFO] fetching crate constrainer 0.0.2...
[INFO] documenting constrainer-0.0.2 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate constrainer 0.0.2 into /workspace/builds/worker-29/source
[INFO] validating manifest of crates.io crate constrainer 0.0.2 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 constrainer 0.0.2
[INFO] finished tweaking crates.io crate constrainer 0.0.2
[INFO] tweaked toml for crates.io crate constrainer 0.0.2 written to /workspace/builds/worker-29/source/Cargo.toml
[INFO] crate crates.io crate constrainer 0.0.2 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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] [stdout] cdcd822049400baa5b73f47f10fcb62ac37fd3b793d6961b65fd2cae87ad8d79
[INFO] running `Command { std: "docker" "start" "-a" "cdcd822049400baa5b73f47f10fcb62ac37fd3b793d6961b65fd2cae87ad8d79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cdcd822049400baa5b73f47f10fcb62ac37fd3b793d6961b65fd2cae87ad8d79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdcd822049400baa5b73f47f10fcb62ac37fd3b793d6961b65fd2cae87ad8d79", kill_on_drop: false }`
[INFO] [stdout] cdcd822049400baa5b73f47f10fcb62ac37fd3b793d6961b65fd2cae87ad8d79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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] [stdout] 87e2d26777305438a81990bf06f23c2ce9efc668eadf24cb472582eba1d09027
[INFO] running `Command { std: "docker" "start" "-a" "87e2d26777305438a81990bf06f23c2ce9efc668eadf24cb472582eba1d09027", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking quote v1.0.10
[INFO] [stderr]  Documenting constrainer v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.01s
[INFO] running `Command { std: "docker" "inspect" "87e2d26777305438a81990bf06f23c2ce9efc668eadf24cb472582eba1d09027", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87e2d26777305438a81990bf06f23c2ce9efc668eadf24cb472582eba1d09027", kill_on_drop: false }`
[INFO] [stdout] 87e2d26777305438a81990bf06f23c2ce9efc668eadf24cb472582eba1d09027
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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] [stdout] bbfdcba6a41dd100febdc08d13714a656df6a53d9271602b0a90a2bc7ae49407
[INFO] running `Command { std: "docker" "start" "-a" "bbfdcba6a41dd100febdc08d13714a656df6a53d9271602b0a90a2bc7ae49407", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking quote v1.0.10
[INFO] [stderr]  Documenting constrainer v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.04s
[INFO] running `Command { std: "docker" "inspect" "bbfdcba6a41dd100febdc08d13714a656df6a53d9271602b0a90a2bc7ae49407", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbfdcba6a41dd100febdc08d13714a656df6a53d9271602b0a90a2bc7ae49407", kill_on_drop: false }`
[INFO] [stdout] bbfdcba6a41dd100febdc08d13714a656df6a53d9271602b0a90a2bc7ae49407