[INFO] fetching crate emacs_module_bindings 0.7.0...
[INFO] documenting emacs_module_bindings-0.7.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate emacs_module_bindings 0.7.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate emacs_module_bindings 0.7.0 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 emacs_module_bindings 0.7.0
[INFO] finished tweaking crates.io crate emacs_module_bindings 0.7.0
[INFO] tweaked toml for crates.io crate emacs_module_bindings 0.7.0 written to /workspace/builds/worker-2/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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] ad4775eb64359c41ab45c01b03554cdba6942b94044c527540995cba7d551e3a
[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" "ad4775eb64359c41ab45c01b03554cdba6942b94044c527540995cba7d551e3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad4775eb64359c41ab45c01b03554cdba6942b94044c527540995cba7d551e3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad4775eb64359c41ab45c01b03554cdba6942b94044c527540995cba7d551e3a", kill_on_drop: false }`
[INFO] [stdout] ad4775eb64359c41ab45c01b03554cdba6942b94044c527540995cba7d551e3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] d36f137f8f7d70abcce543be525a2cccba719a35c6e45877b268474b6e66156e
[INFO] running `Command { std: "docker" "start" "-a" "d36f137f8f7d70abcce543be525a2cccba719a35c6e45877b268474b6e66156e", kill_on_drop: false }`
[INFO] [stderr]    Compiling bindgen v0.32.3
[INFO] [stderr]    Compiling clang-sys v0.21.2
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]    Compiling which v1.0.5
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]    Compiling emacs_module_bindings v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting emacs_module_bindings v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` fn uses type `str`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:15:59
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub extern "C" fn find_function(env: *mut EmacsEnv, name: &str) -> EmacsVal {
[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/lib.rs:27:38
[INFO] [stdout]    |
[INFO] [stdout] 27 | ...                   doc: &str,
[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::string::String`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:56:59
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub extern "C" fn intern_symbol(env: *mut EmacsEnv, name: String) -> EmacsVal {
[INFO] [stdout]    |                                                           ^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]    = note: this struct has unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `std::string::String`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:65:39
[INFO] [stdout]    |
[INFO] [stdout] 65 | ...                   name: String,
[INFO] [stdout]    |                             ^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]    = note: this struct has unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `std::string::String`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:77:56
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub extern "C" fn provide(env: *mut EmacsEnv, feature: String) {
[INFO] [stdout]    |                                                        ^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]    = note: this struct has unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `std::string::String`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:92:58
[INFO] [stdout]    |
[INFO] [stdout] 92 | pub extern "C" fn get_buffer(env: *mut EmacsEnv, buffer: String) -> EmacsVal {
[INFO] [stdout]    |                                                          ^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]    = note: this struct has unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `str`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:102:53
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub extern "C" fn call(env: *mut EmacsEnv, fn_name: &str, args: &mut [EmacsVal])
[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 `[*mut emacs_gen::emacs_value_tag]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:102:65
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub extern "C" fn call(env: *mut EmacsEnv, fn_name: &str, args: &mut [EmacsVal])
[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: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.42s
[INFO] running `Command { std: "docker" "inspect" "d36f137f8f7d70abcce543be525a2cccba719a35c6e45877b268474b6e66156e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d36f137f8f7d70abcce543be525a2cccba719a35c6e45877b268474b6e66156e", kill_on_drop: false }`
[INFO] [stdout] d36f137f8f7d70abcce543be525a2cccba719a35c6e45877b268474b6e66156e