[INFO] fetching crate improv 1.0.0-beta.1...
[INFO] documenting improv-1.0.0-beta.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate improv 1.0.0-beta.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate improv 1.0.0-beta.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 improv 1.0.0-beta.1
[INFO] finished tweaking crates.io crate improv 1.0.0-beta.1
[INFO] tweaked toml for crates.io crate improv 1.0.0-beta.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a22ee3f3738e8a13cf3f387a08b91aec25e24d6dc1220587b9edb92334c03d82
[INFO] running `Command { std: "docker" "start" "-a" "a22ee3f3738e8a13cf3f387a08b91aec25e24d6dc1220587b9edb92334c03d82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a22ee3f3738e8a13cf3f387a08b91aec25e24d6dc1220587b9edb92334c03d82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a22ee3f3738e8a13cf3f387a08b91aec25e24d6dc1220587b9edb92334c03d82", kill_on_drop: false }`
[INFO] [stdout] a22ee3f3738e8a13cf3f387a08b91aec25e24d6dc1220587b9edb92334c03d82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] f2288ef9a1ba1c1b45724abfacb0679fd6fa1a3ef94b71231cbd50a90df97921
[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" "f2288ef9a1ba1c1b45724abfacb0679fd6fa1a3ef94b71231cbd50a90df97921", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling async-trait v0.1.53
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]  Documenting improv v1.0.0-beta.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.81s
[INFO] running `Command { std: "docker" "inspect" "f2288ef9a1ba1c1b45724abfacb0679fd6fa1a3ef94b71231cbd50a90df97921", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2288ef9a1ba1c1b45724abfacb0679fd6fa1a3ef94b71231cbd50a90df97921", kill_on_drop: false }`
[INFO] [stdout] f2288ef9a1ba1c1b45724abfacb0679fd6fa1a3ef94b71231cbd50a90df97921
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--all-features" "--frozen" "--message-format=json" "--" "--cfg" "docsrs" "-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] 56c947546df9d6ca28ad0ceaeb392285baf957d89054032f104c0e5666754aea
[INFO] running `Command { std: "docker" "start" "-a" "56c947546df9d6ca28ad0ceaeb392285baf957d89054032f104c0e5666754aea", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling async-trait v0.1.53
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]  Documenting improv v1.0.0-beta.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.35s
[INFO] running `Command { std: "docker" "inspect" "56c947546df9d6ca28ad0ceaeb392285baf957d89054032f104c0e5666754aea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56c947546df9d6ca28ad0ceaeb392285baf957d89054032f104c0e5666754aea", kill_on_drop: false }`
[INFO] [stdout] 56c947546df9d6ca28ad0ceaeb392285baf957d89054032f104c0e5666754aea