[INFO] cloning repository https://github.com/projectriff/rust-function-invoker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/projectriff/rust-function-invoker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprojectriff%2Frust-function-invoker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprojectriff%2Frust-function-invoker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2c2d9dbda792627e352f505012a2bc996e890564
[INFO] testing projectriff/rust-function-invoker/2c2d9dbda792627e352f505012a2bc996e890564 against master#552a959051cebf8f88a8f558399baf733bec9ce0 for pr-136932
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprojectriff%2Frust-function-invoker" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/projectriff/rust-function-invoker on toolchain 552a959051cebf8f88a8f558399baf733bec9ce0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/projectriff/rust-function-invoker
[INFO] finished tweaking git repo https://github.com/projectriff/rust-function-invoker
[INFO] tweaked toml for git repo https://github.com/projectriff/rust-function-invoker written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/projectriff/rust-function-invoker already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: /workspace/builds/worker-3-tc1/source/rust_invoker/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-3-tc1/source/function_types/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /workspace/builds/worker-3-tc1/source/samples/hello/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mime_guess v1.8.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0c98b227cb659d7f2588a2b81b662bd5e08f409d82a6af7d0c0076afc6db7d4b
[INFO] running `Command { std: "docker" "start" "-a" "0c98b227cb659d7f2588a2b81b662bd5e08f409d82a6af7d0c0076afc6db7d4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c98b227cb659d7f2588a2b81b662bd5e08f409d82a6af7d0c0076afc6db7d4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c98b227cb659d7f2588a2b81b662bd5e08f409d82a6af7d0c0076afc6db7d4b", kill_on_drop: false }`
[INFO] [stdout] 0c98b227cb659d7f2588a2b81b662bd5e08f409d82a6af7d0c0076afc6db7d4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 03fba1c4f754b9c18bee1c98e3c409e7bca05234c12d78217fb81eb144a7568e
[INFO] running `Command { std: "docker" "start" "-a" "03fba1c4f754b9c18bee1c98e3c409e7bca05234c12d78217fb81eb144a7568e", kill_on_drop: false }`
[INFO] [stderr] warning: /opt/rustwide/workdir/rust_invoker/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/function_types/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/samples/hello/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling cfg-if v0.1.5
[INFO] [stderr]    Compiling traitobject v0.1.0
[INFO] [stderr]    Compiling matches v0.1.7
[INFO] [stderr]    Compiling unicode-normalization v0.1.7
[INFO] [stderr]    Compiling httparse v1.3.2
[INFO] [stderr]    Compiling log v0.4.3
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling unsafe-any v0.4.2
[INFO] [stderr]    Compiling cc v1.0.18
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling byteorder v1.2.4
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling safemem v0.2.0
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling phf_shared v0.7.22
[INFO] [stderr]    Compiling base64 v0.6.0
[INFO] [stderr]    Compiling typemap v0.3.3
[INFO] [stderr]    Compiling phf v0.7.22
[INFO] [stderr]    Compiling typeable v0.1.2
[INFO] [stderr]    Compiling rand v0.4.3
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling plugin v0.2.6
[INFO] [stderr]    Compiling modifier v0.1.0
[INFO] [stderr]    Compiling phf_generator v0.7.22
[INFO] [stderr]    Compiling function_types v0.1.0 (/opt/rustwide/workdir/function_types)
[INFO] [stdout] warning: `extern` fn uses type `String`, which is not FFI-safe
[INFO] [stdout]   --> function_types/src/lib.rs:17:18
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub type Basic = unsafe extern "C" fn(input: String) -> 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]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling phf_codegen v0.7.22
[INFO] [stderr]    Compiling hello v0.1.0 (/opt/rustwide/workdir/samples/hello)
[INFO] [stderr]    Compiling libloading v0.5.0
[INFO] [stdout] warning: `extern` fn uses type `String`, which is not FFI-safe
[INFO] [stdout]   --> samples/hello/src/lib.rs:22:35
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub extern "C" fn function(input: String) -> 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]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `String`, which is not FFI-safe
[INFO] [stdout]   --> samples/hello/src/lib.rs:22:46
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub extern "C" fn function(input: String) -> 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] [stderr]    Compiling mime_guess v1.8.6
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling url v1.7.1
[INFO] [stderr]    Compiling hyper v0.10.13
[INFO] [stderr]    Compiling iron v0.6.0
[INFO] [stderr]    Compiling rust_invoker v0.1.0 (/opt/rustwide/workdir/rust_invoker)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.08s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: traitobject v0.1.0, typemap v0.3.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "03fba1c4f754b9c18bee1c98e3c409e7bca05234c12d78217fb81eb144a7568e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03fba1c4f754b9c18bee1c98e3c409e7bca05234c12d78217fb81eb144a7568e", kill_on_drop: false }`
[INFO] [stdout] 03fba1c4f754b9c18bee1c98e3c409e7bca05234c12d78217fb81eb144a7568e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec38bdb329533b710004e28f8e54718a17c7c2e03111eb5c86e43ca6b5f02817
[INFO] running `Command { std: "docker" "start" "-a" "ec38bdb329533b710004e28f8e54718a17c7c2e03111eb5c86e43ca6b5f02817", kill_on_drop: false }`
[INFO] [stderr] warning: /opt/rustwide/workdir/function_types/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/rust_invoker/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/samples/hello/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stdout] warning: `extern` fn uses type `String`, which is not FFI-safe
[INFO] [stdout]   --> function_types/src/lib.rs:17:18
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub type Basic = unsafe extern "C" fn(input: String) -> 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]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `String`, which is not FFI-safe
[INFO] [stdout]   --> samples/hello/src/lib.rs:22:35
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub extern "C" fn function(input: String) -> 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]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `String`, which is not FFI-safe
[INFO] [stdout]   --> samples/hello/src/lib.rs:22:46
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub extern "C" fn function(input: String) -> 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] [stderr]    Compiling hello v0.1.0 (/opt/rustwide/workdir/samples/hello)
[INFO] [stderr]    Compiling function_types v0.1.0 (/opt/rustwide/workdir/function_types)
[INFO] [stderr]    Compiling rust_invoker v0.1.0 (/opt/rustwide/workdir/rust_invoker)
[INFO] [stdout] warning: `extern` fn uses type `String`, which is not FFI-safe
[INFO] [stdout]   --> function_types/src/lib.rs:17:18
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub type Basic = unsafe extern "C" fn(input: String) -> 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]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `String`, which is not FFI-safe
[INFO] [stdout]   --> samples/hello/src/lib.rs:22:35
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub extern "C" fn function(input: String) -> 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]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `String`, which is not FFI-safe
[INFO] [stdout]   --> samples/hello/src/lib.rs:22:46
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub extern "C" fn function(input: String) -> 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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.57s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: traitobject v0.1.0, typemap v0.3.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "ec38bdb329533b710004e28f8e54718a17c7c2e03111eb5c86e43ca6b5f02817", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec38bdb329533b710004e28f8e54718a17c7c2e03111eb5c86e43ca6b5f02817", kill_on_drop: false }`
[INFO] [stdout] ec38bdb329533b710004e28f8e54718a17c7c2e03111eb5c86e43ca6b5f02817
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6913b1c141534b0d0c67b5b1ae08e2aa233fde8679a994b8f1f6a054bef07609
[INFO] running `Command { std: "docker" "start" "-a" "6913b1c141534b0d0c67b5b1ae08e2aa233fde8679a994b8f1f6a054bef07609", kill_on_drop: false }`
[INFO] [stderr] warning: /opt/rustwide/workdir/samples/hello/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/rust_invoker/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: /opt/rustwide/workdir/function_types/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: `extern` fn uses type `String`, which is not FFI-safe
[INFO] [stderr]   --> function_types/src/lib.rs:17:18
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub type Basic = unsafe extern "C" fn(input: String) -> String;
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stderr]    = note: this struct has unspecified layout
[INFO] [stderr]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `function_types` (lib) generated 1 warning
[INFO] [stderr] warning: `extern` fn uses type `String`, which is not FFI-safe
[INFO] [stderr]   --> samples/hello/src/lib.rs:22:35
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub extern "C" fn function(input: String) -> String {
[INFO] [stderr]    |                                   ^^^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stderr]    = note: this struct has unspecified layout
[INFO] [stderr]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `String`, which is not FFI-safe
[INFO] [stderr]   --> samples/hello/src/lib.rs:22:46
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub extern "C" fn function(input: String) -> String {
[INFO] [stderr]    |                                              ^^^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stderr]    = note: this struct has unspecified layout
[INFO] [stderr] 
[INFO] [stderr] warning: `hello` (lib) generated 2 warnings
[INFO] [stderr] warning: `hello` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr] warning: `function_types` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: traitobject v0.1.0, typemap v0.3.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/function_types-50bd96969bdb3b93)
[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] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/hello-ed47cdc8219be3f3)
[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] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_invoker-498e43773a62cd46)
[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] [stderr]    Doc-tests function_types
[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] [stderr]    Doc-tests hello
[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" "6913b1c141534b0d0c67b5b1ae08e2aa233fde8679a994b8f1f6a054bef07609", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6913b1c141534b0d0c67b5b1ae08e2aa233fde8679a994b8f1f6a054bef07609", kill_on_drop: false }`
[INFO] [stdout] 6913b1c141534b0d0c67b5b1ae08e2aa233fde8679a994b8f1f6a054bef07609