[INFO] fetching crate nature_demo_executor 0.15.0...
[INFO] testing nature_demo_executor-0.15.0 against 1.59.0 for beta-1.60-1
[INFO] extracting crate nature_demo_executor 0.15.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate nature_demo_executor 0.15.0 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nature_demo_executor 0.15.0
[INFO] finished tweaking crates.io crate nature_demo_executor 0.15.0
[INFO] tweaked toml for crates.io crate nature_demo_executor 0.15.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
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[INFO] [stdout] 5efc37574520cbee690c2e3a2e63c615f6ab8f7b078c0d105aa546a66c9ff44e
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[INFO] running `Command { std: "docker" "rm" "-f" "5efc37574520cbee690c2e3a2e63c615f6ab8f7b078c0d105aa546a66c9ff44e", kill_on_drop: false }`
[INFO] [stdout] 5efc37574520cbee690c2e3a2e63c615f6ab8f7b078c0d105aa546a66c9ff44e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20fc2c4c9d4c89ea8538327025fb150949b16fa5cb25f569c6d19934823a06e1
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[INFO] [stderr]    Compiling nature_common v0.15.0
[INFO] [stderr]    Compiling nature_demo_common v0.15.0
[INFO] [stderr]    Compiling nature_demo_executor v0.15.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` fn uses type `ConverterReturned`, which is not FFI-safe
[INFO] [stdout]  --> src/emall.rs:9:62
[INFO] [stdout]   |
[INFO] [stdout] 9 | 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/emall.rs:32:55
[INFO] [stdout]    |
[INFO] [stdout] 32 | 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/emall.rs:67:67
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub extern fn stock_out_application(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/emall.rs:77:56
[INFO] [stdout]    |
[INFO] [stdout] 77 | 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/emall.rs:90:56
[INFO] [stdout]    |
[INFO] [stdout] 90 | 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: `extern` fn uses type `ConverterReturned`, which is not FFI-safe
[INFO] [stdout]    --> src/emall.rs:101:60
[INFO] [stdout]     |
[INFO] [stdout] 101 | pub extern fn multi_delivery(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 `Result<Vec<Instance>, NatureError>`, which is not FFI-safe
[INFO] [stdout]  --> src/score.rs:8:51
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub extern fn name_to_id(para: &Vec<Instance>) -> Result<Vec<Instance>> {
[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/sale.rs:7:59
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub extern fn order_to_item(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 `Result<Instance, NatureError>`, which is not FFI-safe
[INFO] [stdout]   --> src/sale.rs:40:46
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub extern fn order2item(para: &Instance) -> Result<Instance> {
[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: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.96s
[INFO] running `Command { std: "docker" "inspect" "20fc2c4c9d4c89ea8538327025fb150949b16fa5cb25f569c6d19934823a06e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20fc2c4c9d4c89ea8538327025fb150949b16fa5cb25f569c6d19934823a06e1", kill_on_drop: false }`
[INFO] [stdout] 20fc2c4c9d4c89ea8538327025fb150949b16fa5cb25f569c6d19934823a06e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7ce8eeab5f745d6609995d7551b0dc4594085fb05e5c97c556d2a5dce8b3ff8
[INFO] running `Command { std: "docker" "start" "-a" "a7ce8eeab5f745d6609995d7551b0dc4594085fb05e5c97c556d2a5dce8b3ff8", kill_on_drop: false }`
[INFO] [stderr]    Compiling nature_demo_executor v0.15.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` fn uses type `ConverterReturned`, which is not FFI-safe
[INFO] [stdout]  --> src/emall.rs:9:62
[INFO] [stdout]   |
[INFO] [stdout] 9 | 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/emall.rs:32:55
[INFO] [stdout]    |
[INFO] [stdout] 32 | 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/emall.rs:67:67
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub extern fn stock_out_application(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/emall.rs:77:56
[INFO] [stdout]    |
[INFO] [stdout] 77 | 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/emall.rs:90:56
[INFO] [stdout]    |
[INFO] [stdout] 90 | 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: `extern` fn uses type `ConverterReturned`, which is not FFI-safe
[INFO] [stdout]    --> src/emall.rs:101:60
[INFO] [stdout]     |
[INFO] [stdout] 101 | pub extern fn multi_delivery(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 `Result<Vec<Instance>, NatureError>`, which is not FFI-safe
[INFO] [stdout]  --> src/score.rs:8:51
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub extern fn name_to_id(para: &Vec<Instance>) -> Result<Vec<Instance>> {
[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/sale.rs:7:59
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub extern fn order_to_item(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 `Result<Instance, NatureError>`, which is not FFI-safe
[INFO] [stdout]   --> src/sale.rs:40:46
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub extern fn order2item(para: &Instance) -> Result<Instance> {
[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: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.79s
[INFO] running `Command { std: "docker" "inspect" "a7ce8eeab5f745d6609995d7551b0dc4594085fb05e5c97c556d2a5dce8b3ff8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7ce8eeab5f745d6609995d7551b0dc4594085fb05e5c97c556d2a5dce8b3ff8", kill_on_drop: false }`
[INFO] [stdout] a7ce8eeab5f745d6609995d7551b0dc4594085fb05e5c97c556d2a5dce8b3ff8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 07e80579d5e33ffef84d96f91d81d998cae46faf3a222adfcee2f54453d71b1d
[INFO] running `Command { std: "docker" "start" "-a" "07e80579d5e33ffef84d96f91d81d998cae46faf3a222adfcee2f54453d71b1d", kill_on_drop: false }`
[INFO] [stderr] warning: `extern` fn uses type `ConverterReturned`, which is not FFI-safe
[INFO] [stderr]  --> src/emall.rs:9:62
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub extern fn order_receivable(para: &ConverterParameter) -> ConverterReturned {
[INFO] [stderr]   |                                                              ^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stderr]   = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stderr]   = note: enum has no representation hint
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `ConverterReturned`, which is not FFI-safe
[INFO] [stderr]   --> src/emall.rs:32:55
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub extern fn pay_count(para: &ConverterParameter) -> ConverterReturned {
[INFO] [stderr]    |                                                       ^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stderr]    = note: enum has no representation hint
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `ConverterReturned`, which is not FFI-safe
[INFO] [stderr]   --> src/emall.rs:67:67
[INFO] [stderr]    |
[INFO] [stderr] 67 | pub extern fn stock_out_application(para: &ConverterParameter) -> ConverterReturned {
[INFO] [stderr]    |                                                                   ^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stderr]    = note: enum has no representation hint
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `ConverterReturned`, which is not FFI-safe
[INFO] [stderr]   --> src/emall.rs:77:56
[INFO] [stderr]    |
[INFO] [stderr] 77 | pub extern fn go_express(para: &ConverterParameter) -> ConverterReturned {
[INFO] [stderr]    |                                                        ^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stderr]    = note: enum has no representation hint
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `ConverterReturned`, which is not FFI-safe
[INFO] [stderr]   --> src/emall.rs:90:56
[INFO] [stderr]    |
[INFO] [stderr] 90 | pub extern fn auto_sign(_para: &ConverterParameter) -> ConverterReturned {
[INFO] [stderr]    |                                                        ^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stderr]    = note: enum has no representation hint
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `ConverterReturned`, which is not FFI-safe
[INFO] [stderr]    --> src/emall.rs:101:60
[INFO] [stderr]     |
[INFO] [stderr] 101 | pub extern fn multi_delivery(para: &ConverterParameter) -> ConverterReturned {
[INFO] [stderr]     |                                                            ^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stderr]     = note: enum has no representation hint
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `Result<Vec<Instance>, NatureError>`, which is not FFI-safe
[INFO] [stderr]  --> src/score.rs:8:51
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub extern fn name_to_id(para: &Vec<Instance>) -> Result<Vec<Instance>> {
[INFO] [stderr]   |                                                   ^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stderr]   |
[INFO] [stderr]   = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stderr]   = note: enum has no representation hint
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `ConverterReturned`, which is not FFI-safe
[INFO] [stderr]  --> src/sale.rs:7:59
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub extern fn order_to_item(para: &ConverterParameter) -> ConverterReturned {
[INFO] [stderr]   |                                                           ^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stderr]   |
[INFO] [stderr]   = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stderr]   = note: enum has no representation hint
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `Result<Instance, NatureError>`, which is not FFI-safe
[INFO] [stderr]   --> src/sale.rs:40:46
[INFO] [stderr]    |
[INFO] [stderr] 40 | pub extern fn order2item(para: &Instance) -> Result<Instance> {
[INFO] [stderr]    |                                              ^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stderr]    = note: enum has no representation hint
[INFO] [stderr] 
[INFO] [stderr] warning: `nature_demo_executor` (lib test) generated 9 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/nature_demo_executor-fd49477ce07f0cad)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "07e80579d5e33ffef84d96f91d81d998cae46faf3a222adfcee2f54453d71b1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07e80579d5e33ffef84d96f91d81d998cae46faf3a222adfcee2f54453d71b1d", kill_on_drop: false }`
[INFO] [stdout] 07e80579d5e33ffef84d96f91d81d998cae46faf3a222adfcee2f54453d71b1d