[INFO] fetching crate testkit 0.2.2...
[INFO] building testkit-0.2.2 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate testkit 0.2.2 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate testkit 0.2.2
[INFO] finished tweaking crates.io crate testkit 0.2.2
[INFO] tweaked toml for crates.io crate testkit 0.2.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate testkit 0.2.2 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate testkit 0.2.2 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a51377c4730da193d99ce72e84e9f5d681c36c93d4b268a896319c3a8135cbba
[INFO] running `Command { std: "docker" "start" "-a" "a51377c4730da193d99ce72e84e9f5d681c36c93d4b268a896319c3a8135cbba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a51377c4730da193d99ce72e84e9f5d681c36c93d4b268a896319c3a8135cbba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a51377c4730da193d99ce72e84e9f5d681c36c93d4b268a896319c3a8135cbba", kill_on_drop: false }`
[INFO] [stdout] a51377c4730da193d99ce72e84e9f5d681c36c93d4b268a896319c3a8135cbba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85701bb76388f65cfd15748292caf2b3edabb26f77ec7fda723a20cf965f164c
[INFO] running `Command { std: "docker" "start" "-a" "85701bb76388f65cfd15748292caf2b3edabb26f77ec7fda723a20cf965f164c", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `DisplayFromStr`
[INFO] [stdout]  --> src/base_request.rs:9:28
[INFO] [stdout]   |
[INFO] [stdout] 9 | use serde_with::{serde_as, DisplayFromStr};
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_yaml::with`
[INFO] [stdout]   --> src/base_request.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use serde_yaml::with;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless assignment of variable of type `std::string::String` to itself
[INFO] [stdout]    --> src/base_request.rs:625:22
[INFO] [stdout]     |
[INFO] [stdout] 625 |                 _ => result = result,
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless assignment of variable of type `std::string::String` to itself
[INFO] [stdout]    --> src/base_request.rs:627:21
[INFO] [stdout]     |
[INFO] [stdout] 627 |             None => result = result,
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless assignment of variable of type `std::string::String` to itself
[INFO] [stdout]    --> src/base_request.rs:550:22
[INFO] [stdout]     |
[INFO] [stdout] 550 |                 _ => url = url,
[INFO] [stdout]     |                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_var_step` is never used
[INFO] [stdout]    --> src/base_request.rs:516:4
[INFO] [stdout]     |
[INFO] [stdout] 516 | fn get_var_step(input: &str, current_step: u32) -> Option<u32> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_export_variable` is never used
[INFO] [stdout]    --> src/base_request.rs:638:4
[INFO] [stdout]     |
[INFO] [stdout] 638 | fn get_export_variable<'a>(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `yaml_to_json` is never used
[INFO] [stdout]     --> src/base_request.rs:1072:4
[INFO] [stdout]      |
[INFO] [stdout] 1072 | fn yaml_to_json(yaml_str: &str) -> Result<String, Box<dyn std::error::Error>> {
[INFO] [stdout]      |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `Result<Vec<RequestResult>, Box<dyn StdError>>`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:13:6
[INFO] [stdout]    |
[INFO] [stdout] 13 | ) -> Result<Vec<RequestResult>, Box<dyn std::error::Error>> {
[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]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&serde_json::Value` instead of cloning the inner type
[INFO] [stdout]    --> src/base_request.rs:475:47
[INFO] [stdout]     |
[INFO] [stdout] 475 | ...                   evaled.clone().clone(),
[INFO] [stdout]     |                             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DisplayFromStr`
[INFO] [stdout]  --> src/base_request.rs:9:28
[INFO] [stdout]   |
[INFO] [stdout] 9 | use serde_with::{serde_as, DisplayFromStr};
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_yaml::with`
[INFO] [stdout]   --> src/base_request.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use serde_yaml::with;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless assignment of variable of type `std::string::String` to itself
[INFO] [stdout]    --> src/base_request.rs:625:22
[INFO] [stdout]     |
[INFO] [stdout] 625 |                 _ => result = result,
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless assignment of variable of type `std::string::String` to itself
[INFO] [stdout]    --> src/base_request.rs:627:21
[INFO] [stdout]     |
[INFO] [stdout] 627 |             None => result = result,
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless assignment of variable of type `std::string::String` to itself
[INFO] [stdout]    --> src/base_request.rs:550:22
[INFO] [stdout]     |
[INFO] [stdout] 550 |                 _ => url = url,
[INFO] [stdout]     |                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_var_step` is never used
[INFO] [stdout]    --> src/base_request.rs:516:4
[INFO] [stdout]     |
[INFO] [stdout] 516 | fn get_var_step(input: &str, current_step: u32) -> Option<u32> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_export_variable` is never used
[INFO] [stdout]    --> src/base_request.rs:638:4
[INFO] [stdout]     |
[INFO] [stdout] 638 | fn get_export_variable<'a>(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `yaml_to_json` is never used
[INFO] [stdout]     --> src/base_request.rs:1072:4
[INFO] [stdout]      |
[INFO] [stdout] 1072 | fn yaml_to_json(yaml_str: &str) -> Result<String, Box<dyn std::error::Error>> {
[INFO] [stdout]      |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&serde_json::Value` instead of cloning the inner type
[INFO] [stdout]    --> src/base_request.rs:475:47
[INFO] [stdout]     |
[INFO] [stdout] 475 | ...                   evaled.clone().clone(),
[INFO] [stdout]     |                             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 25s
[INFO] running `Command { std: "docker" "inspect" "85701bb76388f65cfd15748292caf2b3edabb26f77ec7fda723a20cf965f164c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85701bb76388f65cfd15748292caf2b3edabb26f77ec7fda723a20cf965f164c", kill_on_drop: false }`
[INFO] [stdout] 85701bb76388f65cfd15748292caf2b3edabb26f77ec7fda723a20cf965f164c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf0c1b3e0c3fb2137c76b8e511a59c6e3ff0dacef443ff60223b9885bb141134
[INFO] running `Command { std: "docker" "start" "-a" "cf0c1b3e0c3fb2137c76b8e511a59c6e3ff0dacef443ff60223b9885bb141134", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `DisplayFromStr`
[INFO] [stdout]  --> src/base_request.rs:9:28
[INFO] [stdout]   |
[INFO] [stdout] 9 | use serde_with::{serde_as, DisplayFromStr};
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_yaml::with`
[INFO] [stdout]   --> src/base_request.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use serde_yaml::with;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless assignment of variable of type `std::string::String` to itself
[INFO] [stdout]    --> src/base_request.rs:625:22
[INFO] [stdout]     |
[INFO] [stdout] 625 |                 _ => result = result,
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless assignment of variable of type `std::string::String` to itself
[INFO] [stdout]    --> src/base_request.rs:627:21
[INFO] [stdout]     |
[INFO] [stdout] 627 |             None => result = result,
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless assignment of variable of type `std::string::String` to itself
[INFO] [stdout]    --> src/base_request.rs:550:22
[INFO] [stdout]     |
[INFO] [stdout] 550 |                 _ => url = url,
[INFO] [stdout]     |                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_var_step` is never used
[INFO] [stdout]    --> src/base_request.rs:516:4
[INFO] [stdout]     |
[INFO] [stdout] 516 | fn get_var_step(input: &str, current_step: u32) -> Option<u32> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_export_variable` is never used
[INFO] [stdout]    --> src/base_request.rs:638:4
[INFO] [stdout]     |
[INFO] [stdout] 638 | fn get_export_variable<'a>(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `yaml_to_json` is never used
[INFO] [stdout]     --> src/base_request.rs:1072:4
[INFO] [stdout]      |
[INFO] [stdout] 1072 | fn yaml_to_json(yaml_str: &str) -> Result<String, Box<dyn std::error::Error>> {
[INFO] [stdout]      |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `Result<Vec<RequestResult>, Box<dyn StdError>>`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:13:6
[INFO] [stdout]    |
[INFO] [stdout] 13 | ) -> Result<Vec<RequestResult>, Box<dyn std::error::Error>> {
[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]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&serde_json::Value` instead of cloning the inner type
[INFO] [stdout]    --> src/base_request.rs:475:47
[INFO] [stdout]     |
[INFO] [stdout] 475 | ...                   evaled.clone().clone(),
[INFO] [stdout]     |                             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DisplayFromStr`
[INFO] [stdout]  --> src/base_request.rs:9:28
[INFO] [stdout]   |
[INFO] [stdout] 9 | use serde_with::{serde_as, DisplayFromStr};
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_yaml::with`
[INFO] [stdout]   --> src/base_request.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use serde_yaml::with;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DisplayFromStr`
[INFO] [stdout]  --> src/base_request.rs:9:28
[INFO] [stdout]   |
[INFO] [stdout] 9 | use serde_with::{serde_as, DisplayFromStr};
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_yaml::with`
[INFO] [stdout]   --> src/base_request.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use serde_yaml::with;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless assignment of variable of type `std::string::String` to itself
[INFO] [stdout]    --> src/base_request.rs:625:22
[INFO] [stdout]     |
[INFO] [stdout] 625 |                 _ => result = result,
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless assignment of variable of type `std::string::String` to itself
[INFO] [stdout]    --> src/base_request.rs:627:21
[INFO] [stdout]     |
[INFO] [stdout] 627 |             None => result = result,
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless assignment of variable of type `std::string::String` to itself
[INFO] [stdout]    --> src/base_request.rs:550:22
[INFO] [stdout]     |
[INFO] [stdout] 550 |                 _ => url = url,
[INFO] [stdout]     |                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_var_step` is never used
[INFO] [stdout]    --> src/base_request.rs:516:4
[INFO] [stdout]     |
[INFO] [stdout] 516 | fn get_var_step(input: &str, current_step: u32) -> Option<u32> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_export_variable` is never used
[INFO] [stdout]    --> src/base_request.rs:638:4
[INFO] [stdout]     |
[INFO] [stdout] 638 | fn get_export_variable<'a>(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `Result<Vec<RequestResult>, Box<dyn StdError>>`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:13:6
[INFO] [stdout]    |
[INFO] [stdout] 13 | ) -> Result<Vec<RequestResult>, Box<dyn std::error::Error>> {
[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]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless assignment of variable of type `std::string::String` to itself
[INFO] [stdout]    --> src/base_request.rs:625:22
[INFO] [stdout]     |
[INFO] [stdout] 625 |                 _ => result = result,
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless assignment of variable of type `std::string::String` to itself
[INFO] [stdout]    --> src/base_request.rs:627:21
[INFO] [stdout]     |
[INFO] [stdout] 627 |             None => result = result,
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless assignment of variable of type `std::string::String` to itself
[INFO] [stdout]    --> src/base_request.rs:550:22
[INFO] [stdout]     |
[INFO] [stdout] 550 |                 _ => url = url,
[INFO] [stdout]     |                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_var_step` is never used
[INFO] [stdout]    --> src/base_request.rs:516:4
[INFO] [stdout]     |
[INFO] [stdout] 516 | fn get_var_step(input: &str, current_step: u32) -> Option<u32> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_export_variable` is never used
[INFO] [stdout]    --> src/base_request.rs:638:4
[INFO] [stdout]     |
[INFO] [stdout] 638 | fn get_export_variable<'a>(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&serde_json::Value` instead of cloning the inner type
[INFO] [stdout]    --> src/base_request.rs:475:47
[INFO] [stdout]     |
[INFO] [stdout] 475 | ...                   evaled.clone().clone(),
[INFO] [stdout]     |                             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&serde_json::Value` instead of cloning the inner type
[INFO] [stdout]    --> src/base_request.rs:475:47
[INFO] [stdout]     |
[INFO] [stdout] 475 | ...                   evaled.clone().clone(),
[INFO] [stdout]     |                             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1m 13s
[INFO] running `Command { std: "docker" "inspect" "cf0c1b3e0c3fb2137c76b8e511a59c6e3ff0dacef443ff60223b9885bb141134", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf0c1b3e0c3fb2137c76b8e511a59c6e3ff0dacef443ff60223b9885bb141134", kill_on_drop: false }`
[INFO] [stdout] cf0c1b3e0c3fb2137c76b8e511a59c6e3ff0dacef443ff60223b9885bb141134