[INFO] fetching crate nature_demo_converter 0.0.2...
[INFO] checking nature_demo_converter-0.0.2 against try#6f12b8fe67b4eed2e838dab803ed9493b9d62c0f for pr-79073
[INFO] extracting crate nature_demo_converter 0.0.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate nature_demo_converter 0.0.2 on toolchain 6f12b8fe67b4eed2e838dab803ed9493b9d62c0f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nature_demo_converter 0.0.2
[INFO] finished tweaking crates.io crate nature_demo_converter 0.0.2
[INFO] tweaked toml for crates.io crate nature_demo_converter 0.0.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nature_demo_common v0.0.2
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[INFO] running `Command { std: "docker" "start" "-a" "452c2e1e93b000074d1e6f28e279af0d9c3bd1ad0f1f6a79e30c52cd22a3c620", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "452c2e1e93b000074d1e6f28e279af0d9c3bd1ad0f1f6a79e30c52cd22a3c620", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "452c2e1e93b000074d1e6f28e279af0d9c3bd1ad0f1f6a79e30c52cd22a3c620", kill_on_drop: false }`
[INFO] [stdout] 452c2e1e93b000074d1e6f28e279af0d9c3bd1ad0f1f6a79e30c52cd22a3c620
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "check" "--frozen" "--all" "--all-targets" "--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] a145ba23d9381dfef73c423bcaf60718fdeb0256ae58edc6ac09d1e608ab9b9a
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[INFO] [stderr]     Checking nature_demo_converter v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` fn uses type `ConverterReturned`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:10:62
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub extern fn order_receivable(para: &ConverterParameter) -> ConverterReturned {
[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)]`, `#[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 `ConverterReturned`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:27:55
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub extern fn pay_count(para: &ConverterParameter) -> ConverterReturned {
[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 `ConverterReturned`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:57:56
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub extern fn go_express(para: &ConverterParameter) -> ConverterReturned {
[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 `ConverterReturned`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:73:55
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub extern fn auto_sign(para: &ConverterParameter) -> ConverterReturned {
[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: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `ConverterReturned`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:10:62
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub extern fn order_receivable(para: &ConverterParameter) -> ConverterReturned {
[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)]`, `#[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 `ConverterReturned`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:27:55
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub extern fn pay_count(para: &ConverterParameter) -> ConverterReturned {
[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 `ConverterReturned`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:57:56
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub extern fn go_express(para: &ConverterParameter) -> ConverterReturned {
[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 `ConverterReturned`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:73:55
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub extern fn auto_sign(para: &ConverterParameter) -> ConverterReturned {
[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: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 03s
[INFO] running `Command { std: "docker" "inspect" "a145ba23d9381dfef73c423bcaf60718fdeb0256ae58edc6ac09d1e608ab9b9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a145ba23d9381dfef73c423bcaf60718fdeb0256ae58edc6ac09d1e608ab9b9a", kill_on_drop: false }`
[INFO] [stdout] a145ba23d9381dfef73c423bcaf60718fdeb0256ae58edc6ac09d1e608ab9b9a