[INFO] fetching crate exec_duration 0.1.1...
[INFO] documenting exec_duration-0.1.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate exec_duration 0.1.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate exec_duration 0.1.1 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 exec_duration 0.1.1
[INFO] finished tweaking crates.io crate exec_duration 0.1.1
[INFO] tweaked toml for crates.io crate exec_duration 0.1.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate exec_duration 0.1.1 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] fbcbd5f4854d716dbe68a8bf241d1fa5ac5e35774c299beb20e4dcbd62fd8b34
[INFO] running `Command { std: "docker" "start" "-a" "fbcbd5f4854d716dbe68a8bf241d1fa5ac5e35774c299beb20e4dcbd62fd8b34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fbcbd5f4854d716dbe68a8bf241d1fa5ac5e35774c299beb20e4dcbd62fd8b34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbcbd5f4854d716dbe68a8bf241d1fa5ac5e35774c299beb20e4dcbd62fd8b34", kill_on_drop: false }`
[INFO] [stdout] fbcbd5f4854d716dbe68a8bf241d1fa5ac5e35774c299beb20e4dcbd62fd8b34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 71ad96677f5486961a7efbb9705f5b16f7fcceb44105d20f8ba84add3590bc44
[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" "71ad96677f5486961a7efbb9705f5b16f7fcceb44105d20f8ba84add3590bc44", kill_on_drop: false }`
[INFO] [stderr]  Documenting exec_duration v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.00s
[INFO] running `Command { std: "docker" "inspect" "71ad96677f5486961a7efbb9705f5b16f7fcceb44105d20f8ba84add3590bc44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71ad96677f5486961a7efbb9705f5b16f7fcceb44105d20f8ba84add3590bc44", kill_on_drop: false }`
[INFO] [stdout] 71ad96677f5486961a7efbb9705f5b16f7fcceb44105d20f8ba84add3590bc44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dcb0652f58c554fa46c1c6c1962a643aceba9efbf07c74e7729715a4a6fe3ed7
[INFO] running `Command { std: "docker" "start" "-a" "dcb0652f58c554fa46c1c6c1962a643aceba9efbf07c74e7729715a4a6fe3ed7", kill_on_drop: false }`
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]  Documenting exec_duration v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.86s
[INFO] running `Command { std: "docker" "inspect" "dcb0652f58c554fa46c1c6c1962a643aceba9efbf07c74e7729715a4a6fe3ed7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcb0652f58c554fa46c1c6c1962a643aceba9efbf07c74e7729715a4a6fe3ed7", kill_on_drop: false }`
[INFO] [stdout] dcb0652f58c554fa46c1c6c1962a643aceba9efbf07c74e7729715a4a6fe3ed7