[INFO] fetching crate emacs_module_bindings 0.7.0...
[INFO] checking emacs_module_bindings-0.7.0 against try#72f88fc4e9458f89516a0b8b0868f3718aec5b47 for pr-74989
[INFO] extracting crate emacs_module_bindings 0.7.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate emacs_module_bindings 0.7.0 on toolchain 72f88fc4e9458f89516a0b8b0868f3718aec5b47
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "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-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 63c00474e633238c7fe8e45f9423cf90e5a0f014fa03427886fca64afa8cd1f4
[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" "63c00474e633238c7fe8e45f9423cf90e5a0f014fa03427886fca64afa8cd1f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63c00474e633238c7fe8e45f9423cf90e5a0f014fa03427886fca64afa8cd1f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63c00474e633238c7fe8e45f9423cf90e5a0f014fa03427886fca64afa8cd1f4", kill_on_drop: false }`
[INFO] [stdout] 63c00474e633238c7fe8e45f9423cf90e5a0f014fa03427886fca64afa8cd1f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "RUSTFLAGS=--cap-lints=forbid" "-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" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dbe8f10cd7333e2978b1fa4e323ff56984d64c1ece1a64b9649e14e8f7bc8feb
[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" "dbe8f10cd7333e2978b1fa4e323ff56984d64c1ece1a64b9649e14e8f7bc8feb", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling bindgen v0.32.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking memchr v2.3.3
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling which v1.0.5
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]    Compiling cexpr v0.2.3
[INFO] [stderr]    Compiling env_logger v0.4.3
[INFO] [stderr]    Compiling 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 `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 `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 `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 `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 `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_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: `extern` fn uses type `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 `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 `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 `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_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] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 56.21s
[INFO] running `Command { std: "docker" "inspect" "dbe8f10cd7333e2978b1fa4e323ff56984d64c1ece1a64b9649e14e8f7bc8feb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbe8f10cd7333e2978b1fa4e323ff56984d64c1ece1a64b9649e14e8f7bc8feb", kill_on_drop: false }`
[INFO] [stdout] dbe8f10cd7333e2978b1fa4e323ff56984d64c1ece1a64b9649e14e8f7bc8feb
