[INFO] fetching crate numpress 1.1.0...
[INFO] documenting numpress-1.1.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate numpress 1.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate numpress 1.1.0 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate numpress 1.1.0
[INFO] finished tweaking crates.io crate numpress 1.1.0
[INFO] tweaked toml for crates.io crate numpress 1.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f19530676c3ccfbea39e2b44e4e6b8ee26b8c71456c2875b5b68ce499ccb8272
[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" "f19530676c3ccfbea39e2b44e4e6b8ee26b8c71456c2875b5b68ce499ccb8272", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f19530676c3ccfbea39e2b44e4e6b8ee26b8c71456c2875b5b68ce499ccb8272", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f19530676c3ccfbea39e2b44e4e6b8ee26b8c71456c2875b5b68ce499ccb8272", kill_on_drop: false }`
[INFO] [stdout] f19530676c3ccfbea39e2b44e4e6b8ee26b8c71456c2875b5b68ce499ccb8272
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04cebadefec688291c802623146fa10b5f253d885f3478380bb18d459ff75cc8
[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" "04cebadefec688291c802623146fa10b5f253d885f3478380bb18d459ff75cc8", kill_on_drop: false }`
[INFO] [stderr]  Documenting numpress v1.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` fn uses type `std::result::Result<(), Error>`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:282:8
[INFO] [stdout]     |
[INFO] [stdout] 282 |     -> Result<()>
[INFO] [stdout]     |        ^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]     = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stdout]     = note: enum has no representation hint
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `std::result::Result<usize, Error>`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:362:8
[INFO] [stdout]     |
[INFO] [stdout] 362 |     -> Result<usize>
[INFO] [stdout]     |        ^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stdout]     = note: enum has no representation hint
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `std::result::Result<usize, Error>`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:460:8
[INFO] [stdout]     |
[INFO] [stdout] 460 |     -> Result<usize>
[INFO] [stdout]     |        ^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stdout]     = note: enum has no representation hint
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.97s
[INFO] running `Command { std: "docker" "inspect" "04cebadefec688291c802623146fa10b5f253d885f3478380bb18d459ff75cc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04cebadefec688291c802623146fa10b5f253d885f3478380bb18d459ff75cc8", kill_on_drop: false }`
[INFO] [stdout] 04cebadefec688291c802623146fa10b5f253d885f3478380bb18d459ff75cc8