[INFO] fetching crate asn1_der 0.7.1...
[INFO] documenting asn1_der-0.7.1 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate asn1_der 0.7.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate asn1_der 0.7.1 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 asn1_der 0.7.1
[INFO] finished tweaking crates.io crate asn1_der 0.7.1
[INFO] tweaked toml for crates.io crate asn1_der 0.7.1 written to /workspace/builds/worker-7/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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 4d9b79008c29d1936d49ec8388ff562d44e0d1585c92ca2f39db7f91ba1fae4f
[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" "4d9b79008c29d1936d49ec8388ff562d44e0d1585c92ca2f39db7f91ba1fae4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d9b79008c29d1936d49ec8388ff562d44e0d1585c92ca2f39db7f91ba1fae4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d9b79008c29d1936d49ec8388ff562d44e0d1585c92ca2f39db7f91ba1fae4f", kill_on_drop: false }`
[INFO] [stdout] 4d9b79008c29d1936d49ec8388ff562d44e0d1585c92ca2f39db7f91ba1fae4f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d8680c8e28a59673b5937665ba6d011f74da44d7cdc6f7db30434ad6c504d2be
[INFO] running `Command { std: "docker" "start" "-a" "d8680c8e28a59673b5937665ba6d011f74da44d7cdc6f7db30434ad6c504d2be", kill_on_drop: false }`
[INFO] [stderr]  Documenting asn1_der v0.7.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` fn uses type `str`, which is not FFI-safe
[INFO] [stdout]   --> src/error.rs:95:47
[INFO] [stdout]    |
[INFO] [stdout] 95 |     extern "C" fn write(f: &mut Formatter, kind: &str, desc: &str) -> fmt::Result {
[INFO] [stdout]    |                                                  ^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]    = help: consider using `*const u8` and a length instead
[INFO] [stdout]    = note: string slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `str`, which is not FFI-safe
[INFO] [stdout]   --> src/error.rs:95:59
[INFO] [stdout]    |
[INFO] [stdout] 95 |     extern "C" fn write(f: &mut Formatter, kind: &str, desc: &str) -> fmt::Result {
[INFO] [stdout]    |                                                              ^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using `*const u8` and a length instead
[INFO] [stdout]    = note: string slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `std::result::Result<(), std::fmt::Error>`, which is not FFI-safe
[INFO] [stdout]   --> src/error.rs:95:68
[INFO] [stdout]    |
[INFO] [stdout] 95 |     extern "C" fn write(f: &mut Formatter, kind: &str, desc: &str) -> fmt::Result {
[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<(), std::fmt::Error>`, which is not FFI-safe
[INFO] [stdout]    --> src/error.rs:153:36
[INFO] [stdout]     |
[INFO] [stdout] 153 |         source: &Option<ErrorSource>) -> fmt::Result
[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 `[u8]`, which is not FFI-safe
[INFO] [stdout]   --> src/typed/utf8_string.rs:46:31
[INFO] [stdout]    |
[INFO] [stdout] 46 |     extern "C" fn is_utf8(slice: &[u8]) -> bool {
[INFO] [stdout]    |                                  ^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a raw pointer instead
[INFO] [stdout]    = note: slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.74s
[INFO] running `Command { std: "docker" "inspect" "d8680c8e28a59673b5937665ba6d011f74da44d7cdc6f7db30434ad6c504d2be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8680c8e28a59673b5937665ba6d011f74da44d7cdc6f7db30434ad6c504d2be", kill_on_drop: false }`
[INFO] [stdout] d8680c8e28a59673b5937665ba6d011f74da44d7cdc6f7db30434ad6c504d2be