[INFO] fetching crate nature_demo_converter 0.0.2...
[INFO] testing nature_demo_converter-0.0.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate nature_demo_converter 0.0.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate nature_demo_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_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-7/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 6a041ea1efcedd6791648510ff251bde4b35a3e5e8089e42b8a0fed61e6c97d2
[INFO] running `Command { std: "docker" "start" "-a" "6a041ea1efcedd6791648510ff251bde4b35a3e5e8089e42b8a0fed61e6c97d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a041ea1efcedd6791648510ff251bde4b35a3e5e8089e42b8a0fed61e6c97d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a041ea1efcedd6791648510ff251bde4b35a3e5e8089e42b8a0fed61e6c97d2", kill_on_drop: false }`
[INFO] [stdout] 6a041ea1efcedd6791648510ff251bde4b35a3e5e8089e42b8a0fed61e6c97d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] daaf65e89accf8e8740458a4bcda68cb1d64deaf79034baf7271f0cd269c4bfc
[INFO] running `Command { std: "docker" "start" "-a" "daaf65e89accf8e8740458a4bcda68cb1d64deaf79034baf7271f0cd269c4bfc", kill_on_drop: false }`
[INFO] [stderr]    Compiling md5 v0.6.1
[INFO] [stderr]    Compiling hashbrown v0.3.1
[INFO] [stderr]    Compiling actix-service v0.4.2
[INFO] [stderr]    Compiling hashbrown v0.6.3
[INFO] [stderr]    Compiling lock_api v0.2.0
[INFO] [stderr]    Compiling base64 v0.10.1
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling hostname v0.3.1
[INFO] [stderr]    Compiling parking_lot_core v0.5.0
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling parking_lot v0.8.0
[INFO] [stderr]    Compiling crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling threadpool v1.8.1
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling enum-as-inner v0.2.1
[INFO] [stderr]    Compiling derive_more v0.14.1
[INFO] [stderr]    Compiling actix_derive v0.4.0
[INFO] [stderr]    Compiling derive_more v0.15.0
[INFO] [stderr]    Compiling resolv-conf v0.6.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling const-random-macro v0.1.13
[INFO] [stderr]    Compiling uuid v0.7.4
[INFO] [stderr]    Compiling parking_lot v0.9.0
[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 chrono v0.4.19
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling const-random v0.1.13
[INFO] [stderr]    Compiling tokio-reactor v0.1.12
[INFO] [stderr]    Compiling tokio-codec v0.1.2
[INFO] [stderr]    Compiling ahash v0.2.19
[INFO] [stderr]    Compiling fern v0.5.9
[INFO] [stderr]    Compiling tokio-tcp v0.1.4
[INFO] [stderr]    Compiling actix-server-config v0.1.2
[INFO] [stderr]    Compiling tokio-udp v0.1.6
[INFO] [stderr]    Compiling actix-codec v0.1.2
[INFO] [stderr]    Compiling actix-utils v0.4.7
[INFO] [stderr]    Compiling trust-dns-proto v0.7.4
[INFO] [stderr]    Compiling h2 v0.1.26
[INFO] [stderr]    Compiling trust-dns-resolver v0.11.1
[INFO] [stderr]    Compiling actix-threadpool v0.1.2
[INFO] [stderr]    Compiling actix-rt v0.2.6
[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_demo_common v0.0.2
[INFO] [stderr]    Compiling 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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 55.99s
[INFO] running `Command { std: "docker" "inspect" "daaf65e89accf8e8740458a4bcda68cb1d64deaf79034baf7271f0cd269c4bfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "daaf65e89accf8e8740458a4bcda68cb1d64deaf79034baf7271f0cd269c4bfc", kill_on_drop: false }`
[INFO] [stdout] daaf65e89accf8e8740458a4bcda68cb1d64deaf79034baf7271f0cd269c4bfc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 28af774c99b722e64162fdcd721a38cd8596e3a4a785aa27055b717d9eb270a4
[INFO] running `Command { std: "docker" "start" "-a" "28af774c99b722e64162fdcd721a38cd8596e3a4a785aa27055b717d9eb270a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.82s
[INFO] running `Command { std: "docker" "inspect" "28af774c99b722e64162fdcd721a38cd8596e3a4a785aa27055b717d9eb270a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28af774c99b722e64162fdcd721a38cd8596e3a4a785aa27055b717d9eb270a4", kill_on_drop: false }`
[INFO] [stdout] 28af774c99b722e64162fdcd721a38cd8596e3a4a785aa27055b717d9eb270a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 845b7eb1ace20e1a7e8402c604745733ba48adc64da89add80afe048eb27532d
[INFO] running `Command { std: "docker" "start" "-a" "845b7eb1ace20e1a7e8402c604745733ba48adc64da89add80afe048eb27532d", kill_on_drop: false }`
[INFO] [stderr] warning: `extern` fn uses type `ConverterReturned`, which is not FFI-safe
[INFO] [stderr]   --> src/lib.rs:10:62
[INFO] [stderr]    |
[INFO] [stderr] 10 | 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/lib.rs:27:55
[INFO] [stderr]    |
[INFO] [stderr] 27 | 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/lib.rs:57:56
[INFO] [stderr]    |
[INFO] [stderr] 57 | 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/lib.rs:73:55
[INFO] [stderr]    |
[INFO] [stderr] 73 | 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: `nature_demo_converter` (lib test) generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/nature_demo_converter-1636c1e33d481d8b)
[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" "845b7eb1ace20e1a7e8402c604745733ba48adc64da89add80afe048eb27532d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "845b7eb1ace20e1a7e8402c604745733ba48adc64da89add80afe048eb27532d", kill_on_drop: false }`
[INFO] [stdout] 845b7eb1ace20e1a7e8402c604745733ba48adc64da89add80afe048eb27532d