[INFO] fetching crate zsplg 0.0.0-alpha2...
[INFO] documenting zsplg-0.0.0-alpha2 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate zsplg 0.0.0-alpha2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate zsplg 0.0.0-alpha2 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 zsplg 0.0.0-alpha2
[INFO] finished tweaking crates.io crate zsplg 0.0.0-alpha2
[INFO] tweaked toml for crates.io crate zsplg 0.0.0-alpha2 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] [stderr]     Blocking waiting for file lock on package cache
[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] 49b8ad569a46cacaee8d7e1eed4f6d349c174bfe821bbd3c05f749afa11ef227
[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" "49b8ad569a46cacaee8d7e1eed4f6d349c174bfe821bbd3c05f749afa11ef227", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49b8ad569a46cacaee8d7e1eed4f6d349c174bfe821bbd3c05f749afa11ef227", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49b8ad569a46cacaee8d7e1eed4f6d349c174bfe821bbd3c05f749afa11ef227", kill_on_drop: false }`
[INFO] [stdout] 49b8ad569a46cacaee8d7e1eed4f6d349c174bfe821bbd3c05f749afa11ef227
[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] [stdout] 5a983e3d8243c7623561ee17d81b7c914d12012fc3ec6e5d22586cf154591af4
[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" "5a983e3d8243c7623561ee17d81b7c914d12012fc3ec6e5d22586cf154591af4", kill_on_drop: false }`
[INFO] [stderr]    Compiling zsplg-core v0.0.0-alpha2
[INFO] [stderr]     Checking try-block v0.1.0
[INFO] [stderr]     Checking os_str_bytes v0.2.1
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]  Documenting zsplg v0.0.0-alpha2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` fn uses type `zsplg_core::FFIResult`, which is not FFI-safe
[INFO] [stdout]   --> src/ffi.rs:15:85
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub unsafe extern "C" fn zsplg_open(file: *const c_char, modname: *const c_char) -> FFIResult {
[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)]` 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 `zsplg_core::Object`, which is not FFI-safe
[INFO] [stdout]   --> src/ffi.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |     parent: Object,
[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 `zsplg_core::FFIResult`, which is not FFI-safe
[INFO] [stdout]   --> src/ffi.rs:37:6
[INFO] [stdout]    |
[INFO] [stdout] 37 | ) -> FFIResult {
[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 `zsplg_core::Object`, which is not FFI-safe
[INFO] [stdout]   --> src/ffi.rs:58:10
[INFO] [stdout]    |
[INFO] [stdout] 58 |     obj: Object,
[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 `zsplg_core::FFIResult`, which is not FFI-safe
[INFO] [stdout]   --> src/ffi.rs:62:6
[INFO] [stdout]    |
[INFO] [stdout] 62 | ) -> FFIResult {
[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 `zsplg_core::Object`, which is not FFI-safe
[INFO] [stdout]   --> src/ffi.rs:91:48
[INFO] [stdout]    |
[INFO] [stdout] 91 | pub unsafe extern "C" fn zsplg_error_to_str(e: Object) -> Object {
[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 `zsplg_core::Object`, which is not FFI-safe
[INFO] [stdout]   --> src/ffi.rs:91:59
[INFO] [stdout]    |
[INFO] [stdout] 91 | pub unsafe extern "C" fn zsplg_error_to_str(e: Object) -> Object {
[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 `zsplg_core::Object`, which is not FFI-safe
[INFO] [stdout]    --> src/ffi.rs:100:36
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub extern "C" fn zsplg_is_null(w: Object) -> bool {
[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 `zsplg_core::Object`, which is not FFI-safe
[INFO] [stdout]    --> src/ffi.rs:107:61
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub unsafe extern "C" fn zsplg_new_str(x: *const c_char) -> Object {
[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 `zsplg_core::Object`, which is not FFI-safe
[INFO] [stdout]    --> src/ffi.rs:120:43
[INFO] [stdout]     |
[INFO] [stdout] 120 | pub unsafe extern "C" fn zsplg_get_str(w: Object) -> *const c_char {
[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 `zsplg_core::Object`, which is not FFI-safe
[INFO] [stdout]    --> src/ffi.rs:133:43
[INFO] [stdout]     |
[INFO] [stdout] 133 | pub unsafe extern "C" fn zsplg_destroy(w: Object) -> bool {
[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: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.98s
[INFO] running `Command { std: "docker" "inspect" "5a983e3d8243c7623561ee17d81b7c914d12012fc3ec6e5d22586cf154591af4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a983e3d8243c7623561ee17d81b7c914d12012fc3ec6e5d22586cf154591af4", kill_on_drop: false }`
[INFO] [stdout] 5a983e3d8243c7623561ee17d81b7c914d12012fc3ec6e5d22586cf154591af4