[INFO] fetching crate vecn 0.2.1...
[INFO] documenting vecn-0.2.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate vecn 0.2.1 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate vecn 0.2.1 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vecn 0.2.1
[INFO] removed 1 missing tests
[INFO] finished tweaking crates.io crate vecn 0.2.1
[INFO] tweaked toml for crates.io crate vecn 0.2.1 written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate crates.io crate vecn 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 73bad8cbee8cf073a084a1a72d1e48749ddeef642c16da2c2dd41f2ca52b353b
[INFO] running `Command { std: "docker" "start" "-a" "73bad8cbee8cf073a084a1a72d1e48749ddeef642c16da2c2dd41f2ca52b353b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73bad8cbee8cf073a084a1a72d1e48749ddeef642c16da2c2dd41f2ca52b353b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73bad8cbee8cf073a084a1a72d1e48749ddeef642c16da2c2dd41f2ca52b353b", kill_on_drop: false }`
[INFO] [stdout] 73bad8cbee8cf073a084a1a72d1e48749ddeef642c16da2c2dd41f2ca52b353b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66aaec25a98dcfd9b23b5b552ba7ff160aa6cf4d1fbc7c9fb1ba1d51e2c178ac
[INFO] running `Command { std: "docker" "start" "-a" "66aaec25a98dcfd9b23b5b552ba7ff160aa6cf4d1fbc7c9fb1ba1d51e2c178ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]  Documenting vecn v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.38s
[INFO] running `Command { std: "docker" "inspect" "66aaec25a98dcfd9b23b5b552ba7ff160aa6cf4d1fbc7c9fb1ba1d51e2c178ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66aaec25a98dcfd9b23b5b552ba7ff160aa6cf4d1fbc7c9fb1ba1d51e2c178ac", kill_on_drop: false }`
[INFO] [stdout] 66aaec25a98dcfd9b23b5b552ba7ff160aa6cf4d1fbc7c9fb1ba1d51e2c178ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 82957efd873a68021a499f5aa82d2452a539c7c9f260629c5b05cf7e37853ff0
[INFO] running `Command { std: "docker" "start" "-a" "82957efd873a68021a499f5aa82d2452a539c7c9f260629c5b05cf7e37853ff0", 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] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]  Documenting vecn v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.14s
[INFO] running `Command { std: "docker" "inspect" "82957efd873a68021a499f5aa82d2452a539c7c9f260629c5b05cf7e37853ff0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82957efd873a68021a499f5aa82d2452a539c7c9f260629c5b05cf7e37853ff0", kill_on_drop: false }`
[INFO] [stdout] 82957efd873a68021a499f5aa82d2452a539c7c9f260629c5b05cf7e37853ff0