[INFO] fetching crate nature_integrate_test_converter 0.0.2...
[INFO] testing nature_integrate_test_converter-0.0.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate nature_integrate_test_converter 0.0.2 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate nature_integrate_test_converter 0.0.2 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nature_integrate_test_converter 0.0.2
[INFO] finished tweaking crates.io crate nature_integrate_test_converter 0.0.2
[INFO] tweaked toml for crates.io crate nature_integrate_test_converter 0.0.2 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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_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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 961a4a9af693a73a9b955cf4444622bcefda96b83ed782be102b92cc7e8bbce9
[INFO] running `Command { std: "docker" "start" "-a" "961a4a9af693a73a9b955cf4444622bcefda96b83ed782be102b92cc7e8bbce9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "961a4a9af693a73a9b955cf4444622bcefda96b83ed782be102b92cc7e8bbce9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "961a4a9af693a73a9b955cf4444622bcefda96b83ed782be102b92cc7e8bbce9", kill_on_drop: false }`
[INFO] [stdout] 961a4a9af693a73a9b955cf4444622bcefda96b83ed782be102b92cc7e8bbce9
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d1800ced8a5679df83bedfadffb86df692dccb45029a0af9819ecbb15cdc38a
[INFO] running `Command { std: "docker" "start" "-a" "2d1800ced8a5679df83bedfadffb86df692dccb45029a0af9819ecbb15cdc38a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
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[INFO] [stderr]    Compiling hashbrown v0.3.1
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[INFO] [stderr]    Compiling actix-service v0.4.2
[INFO] [stderr]    Compiling lock_api v0.2.0
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[INFO] [stderr]    Compiling parking_lot_core v0.5.0
[INFO] [stderr]    Compiling parking_lot v0.8.0
[INFO] [stderr]    Compiling derive_more v0.15.0
[INFO] [stderr]    Compiling enum-as-inner v0.2.1
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling derive_more v0.14.1
[INFO] [stderr]    Compiling actix_derive v0.4.0
[INFO] [stderr]    Compiling serde_urlencoded v0.6.1
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling hostname v0.3.1
[INFO] [stderr]    Compiling socket2 v0.3.19
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling resolv-conf v0.6.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling threadpool v1.8.1
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling const-random-macro v0.1.13
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling mio v0.6.23
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[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling tokio-io v0.1.13
[INFO] [stderr]    Compiling http v0.1.21
[INFO] [stderr]    Compiling string v0.2.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling const-random v0.1.13
[INFO] [stderr]    Compiling fern v0.5.9
[INFO] [stderr]    Compiling ahash v0.2.19
[INFO] [stderr]    Compiling tokio-codec v0.1.2
[INFO] [stderr]    Compiling actix-codec v0.1.2
[INFO] [stderr]    Compiling tokio-reactor v0.1.12
[INFO] [stderr]    Compiling actix-utils v0.4.7
[INFO] [stderr]    Compiling tokio-tcp v0.1.4
[INFO] [stderr]    Compiling tokio-udp v0.1.6
[INFO] [stderr]    Compiling trust-dns-proto v0.7.4
[INFO] [stderr]    Compiling actix-server-config v0.1.2
[INFO] [stderr]    Compiling actix-threadpool v0.1.2
[INFO] [stderr]    Compiling actix-rt v0.2.6
[INFO] [stderr]    Compiling h2 v0.1.26
[INFO] [stderr]    Compiling trust-dns-resolver v0.11.1
[INFO] [stderr]    Compiling actix-connect v0.2.5
[INFO] [stderr]    Compiling actix-http v0.2.11
[INFO] [stderr]    Compiling actix v0.8.3
[INFO] [stderr]    Compiling nature_common v0.0.2
[INFO] [stderr]    Compiling nature_integrate_test_converter v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` fn uses type `nature_common::ConverterReturned`, which is not FFI-safe
[INFO] [stdout]  --> src/lib.rs:8:55
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub extern fn rtn_none(_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 `nature_common::ConverterReturned`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:15:64
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub extern fn rtn_logical_error(_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 `nature_common::ConverterReturned`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:22:54
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub extern fn rtn_one(_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 `nature_common::ConverterReturned`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:31:54
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub extern fn rtn_tow(_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 `nature_common::ConverterReturned`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:42:68
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub extern fn rtn_environment_error(_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: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 56.59s
[INFO] running `Command { std: "docker" "inspect" "2d1800ced8a5679df83bedfadffb86df692dccb45029a0af9819ecbb15cdc38a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d1800ced8a5679df83bedfadffb86df692dccb45029a0af9819ecbb15cdc38a", kill_on_drop: false }`
[INFO] [stdout] 2d1800ced8a5679df83bedfadffb86df692dccb45029a0af9819ecbb15cdc38a
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8880a629fa70d6a55fafbaa0ab8d179588b053f28e8d443ffb92bc2f1ef6e3e6
[INFO] running `Command { std: "docker" "start" "-a" "8880a629fa70d6a55fafbaa0ab8d179588b053f28e8d443ffb92bc2f1ef6e3e6", kill_on_drop: false }`
[INFO] [stderr]    Compiling nature_integrate_test_converter v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` fn uses type `nature_common::ConverterReturned`, which is not FFI-safe
[INFO] [stdout]  --> src/lib.rs:8:55
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub extern fn rtn_none(_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 `nature_common::ConverterReturned`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:15:64
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub extern fn rtn_logical_error(_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 `nature_common::ConverterReturned`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:22:54
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub extern fn rtn_one(_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 `nature_common::ConverterReturned`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:31:54
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub extern fn rtn_tow(_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 `nature_common::ConverterReturned`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:42:68
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub extern fn rtn_environment_error(_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: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.37s
[INFO] running `Command { std: "docker" "inspect" "8880a629fa70d6a55fafbaa0ab8d179588b053f28e8d443ffb92bc2f1ef6e3e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8880a629fa70d6a55fafbaa0ab8d179588b053f28e8d443ffb92bc2f1ef6e3e6", kill_on_drop: false }`
[INFO] [stdout] 8880a629fa70d6a55fafbaa0ab8d179588b053f28e8d443ffb92bc2f1ef6e3e6
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3c2065857f0afa15c9cf764d0d4808f31b461d5037115f16c3c7735672e5ecc0
[INFO] running `Command { std: "docker" "start" "-a" "3c2065857f0afa15c9cf764d0d4808f31b461d5037115f16c3c7735672e5ecc0", kill_on_drop: false }`
[INFO] [stderr] warning: `extern` fn uses type `nature_common::ConverterReturned`, which is not FFI-safe
[INFO] [stderr]  --> src/lib.rs:8:55
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub extern fn rtn_none(_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 `nature_common::ConverterReturned`, which is not FFI-safe
[INFO] [stderr]   --> src/lib.rs:15:64
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub extern fn rtn_logical_error(_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 `nature_common::ConverterReturned`, which is not FFI-safe
[INFO] [stderr]   --> src/lib.rs:22:54
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub extern fn rtn_one(_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 `nature_common::ConverterReturned`, which is not FFI-safe
[INFO] [stderr]   --> src/lib.rs:31:54
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub extern fn rtn_tow(_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 `nature_common::ConverterReturned`, which is not FFI-safe
[INFO] [stderr]   --> src/lib.rs:42:68
[INFO] [stderr]    |
[INFO] [stderr] 42 | pub extern fn rtn_environment_error(_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: `nature_integrate_test_converter` (lib test) generated 5 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/nature_integrate_test_converter-018b638cf3b22bac)
[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" "3c2065857f0afa15c9cf764d0d4808f31b461d5037115f16c3c7735672e5ecc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c2065857f0afa15c9cf764d0d4808f31b461d5037115f16c3c7735672e5ecc0", kill_on_drop: false }`
[INFO] [stdout] 3c2065857f0afa15c9cf764d0d4808f31b461d5037115f16c3c7735672e5ecc0