[INFO] fetching crate freefare-sys 0.2.0...
[INFO] documenting freefare-sys-0.2.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate freefare-sys 0.2.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate freefare-sys 0.2.0 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 freefare-sys 0.2.0
[INFO] finished tweaking crates.io crate freefare-sys 0.2.0
[INFO] tweaked toml for crates.io crate freefare-sys 0.2.0 written to /workspace/builds/worker-3/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 9254fca0f52e60216d97b38efe11797d693230afdb9c260dbcf75f4ab17cb079
[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" "9254fca0f52e60216d97b38efe11797d693230afdb9c260dbcf75f4ab17cb079", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9254fca0f52e60216d97b38efe11797d693230afdb9c260dbcf75f4ab17cb079", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9254fca0f52e60216d97b38efe11797d693230afdb9c260dbcf75f4ab17cb079", kill_on_drop: false }`
[INFO] [stdout] 9254fca0f52e60216d97b38efe11797d693230afdb9c260dbcf75f4ab17cb079
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 99ca66797f2983384d70f3b541955248a1ac9cb5679b294c3670d63b6ccee480
[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" "99ca66797f2983384d70f3b541955248a1ac9cb5679b294c3670d63b6ccee480", kill_on_drop: false }`
[INFO] [stderr]     Checking nfc-sys v0.1.5
[INFO] [stderr]  Documenting freefare-sys v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` block uses type `[u8; 4]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:290:15
[INFO] [stdout]     |
[INFO] [stdout] 290 |         data: MifareUltralightPage,
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(improper_ctypes)]` on by default
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:309:14
[INFO] [stdout]     |
[INFO] [stdout] 309 |         key: MifareClassicKey,
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 16]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:332:15
[INFO] [stdout]     |
[INFO] [stdout] 332 |         data: MifareClassicBlock,
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:370:16
[INFO] [stdout]     |
[INFO] [stdout] 370 |         key_a: MifareClassicKey,
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:376:16
[INFO] [stdout]     |
[INFO] [stdout] 376 |         key_b: MifareClassicKey,
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:393:26
[INFO] [stdout]     |
[INFO] [stdout] 393 |         key_b_sector_00: MifareClassicKey,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:394:26
[INFO] [stdout]     |
[INFO] [stdout] 394 |         key_b_sector_10: MifareClassicKey,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:426:14
[INFO] [stdout]     |
[INFO] [stdout] 426 |         key: MifareClassicKey,
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[u8; 6]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:435:14
[INFO] [stdout]     |
[INFO] [stdout] 435 |         key: MifareClassicKey,
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.96s
[INFO] running `Command { std: "docker" "inspect" "99ca66797f2983384d70f3b541955248a1ac9cb5679b294c3670d63b6ccee480", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99ca66797f2983384d70f3b541955248a1ac9cb5679b294c3670d63b6ccee480", kill_on_drop: false }`
[INFO] [stdout] 99ca66797f2983384d70f3b541955248a1ac9cb5679b294c3670d63b6ccee480