[INFO] fetching crate log4rust 0.1.6...
[INFO] testing log4rust-0.1.6 against nightly-2024-10-28 for randomize-layout
[INFO] extracting crate log4rust 0.1.6 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate log4rust 0.1.6 on toolchain nightly-2024-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate log4rust 0.1.6
[INFO] finished tweaking crates.io crate log4rust 0.1.6
[INFO] tweaked toml for crates.io crate log4rust 0.1.6 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-10-28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 78 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1078bd0c9481f762f407eed06045780fed4562b93914bced187433518f9c53c
[INFO] running `Command { std: "docker" "start" "-a" "f1078bd0c9481f762f407eed06045780fed4562b93914bced187433518f9c53c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1078bd0c9481f762f407eed06045780fed4562b93914bced187433518f9c53c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1078bd0c9481f762f407eed06045780fed4562b93914bced187433518f9c53c", kill_on_drop: false }`
[INFO] [stdout] f1078bd0c9481f762f407eed06045780fed4562b93914bced187433518f9c53c
[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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23040a234022cca6a44413b2b2a998423d3bbf334d6c79bbc79c53f5c07c2222
[INFO] running `Command { std: "docker" "start" "-a" "23040a234022cca6a44413b2b2a998423d3bbf334d6c79bbc79c53f5c07c2222", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling gimli v0.31.1
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling adler2 v2.0.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.24
[INFO] [stderr]    Compiling iana-time-zone v0.1.61
[INFO] [stderr]    Compiling colored v2.1.0
[INFO] [stderr]    Compiling miniz_oxide v0.8.0
[INFO] [stderr]    Compiling object v0.36.5
[INFO] [stderr]    Compiling chrono v0.4.38
[INFO] [stderr]    Compiling addr2line v0.24.2
[INFO] [stderr]    Compiling backtrace v0.3.74
[INFO] [stderr]    Compiling log4rust v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.01s
[INFO] running `Command { std: "docker" "inspect" "23040a234022cca6a44413b2b2a998423d3bbf334d6c79bbc79c53f5c07c2222", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23040a234022cca6a44413b2b2a998423d3bbf334d6c79bbc79c53f5c07c2222", kill_on_drop: false }`
[INFO] [stdout] 23040a234022cca6a44413b2b2a998423d3bbf334d6c79bbc79c53f5c07c2222
[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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da0d2d257e483d9e477cef031ac996a660408a4d6c048018ef49db26517dc63f
[INFO] running `Command { std: "docker" "start" "-a" "da0d2d257e483d9e477cef031ac996a660408a4d6c048018ef49db26517dc63f", kill_on_drop: false }`
[INFO] [stderr]    Compiling log4rust v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "da0d2d257e483d9e477cef031ac996a660408a4d6c048018ef49db26517dc63f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da0d2d257e483d9e477cef031ac996a660408a4d6c048018ef49db26517dc63f", kill_on_drop: false }`
[INFO] [stdout] da0d2d257e483d9e477cef031ac996a660408a4d6c048018ef49db26517dc63f
[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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d0693e206788fc6c022d2780b02baa764a91f1d8ef4ba45bcca6d7158b7077ec
[INFO] running `Command { std: "docker" "start" "-a" "d0693e206788fc6c022d2780b02baa764a91f1d8ef4ba45bcca6d7158b7077ec", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/log4rust-950859df07eb3fdf)
[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 log4rust
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - (line 8) ... FAILED
[INFO] [stdout] test src/config.rs - config::Config (line 85) ... FAILED
[INFO] [stdout] test src/config.rs - config::Config (line 60) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 8) stdout ----
[INFO] [stdout] error: cannot find macro `fatal` in this scope
[INFO] [stdout]   --> src/lib.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fatal!("This is something fatal");
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]    |
[INFO] [stdout] 2  + use log4rust::fatal;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `error` in this scope
[INFO] [stdout]  --> src/lib.rs:15:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     error!("This is an error");
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]   |
[INFO] [stdout] 2 + use log4rust::error;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `warn` in this scope
[INFO] [stdout]  --> src/lib.rs:14:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     warn!("This is a warning");
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `warn` is in scope, but it is an attribute: `#[warn]`
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]   |
[INFO] [stdout] 2 + use log4rust::warn;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `info` in this scope
[INFO] [stdout]  --> src/lib.rs:13:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     info!("This is some info");
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]   |
[INFO] [stdout] 2 + use log4rust::info;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/config.rs - config::Config (line 85) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Time`
[INFO] [stdout]  --> src/config.rs:88:10
[INFO] [stdout]   |
[INFO] [stdout] 6 |    .time(Time::UTC)
[INFO] [stdout]   |          ^^^^ use of undeclared type `Time`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]   |
[INFO] [stdout] 2 + use log4rust::Time;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Log`
[INFO] [stdout]  --> src/config.rs:89:14
[INFO] [stdout]   |
[INFO] [stdout] 7 |    .set_type(Log::Info)?.console(Console::_None)?
[INFO] [stdout]   |              ^^^ use of undeclared type `Log`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]   |
[INFO] [stdout] 2 + use log4rust::Log;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Console`
[INFO] [stdout]  --> src/config.rs:89:34
[INFO] [stdout]   |
[INFO] [stdout] 7 |    .set_type(Log::Info)?.console(Console::_None)?
[INFO] [stdout]   |                                  ^^^^^^^ use of undeclared type `Console`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]   |
[INFO] [stdout] 2 + use log4rust::Console;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]  --> src/config.rs:89:24
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_85_0() {
[INFO] [stdout]   |                                      ------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 7 |    .set_type(Log::Info)?.console(Console::_None)?
[INFO] [stdout]   |                        ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()`
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]   |
[INFO] [stdout] 4 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_85_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5 | log4rust::new()
[INFO] [stdout] ...
[INFO] [stdout] 9 |    .unwrap();
[INFO] [stdout] 10+     Ok(())
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]  --> src/config.rs:89:49
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_85_0() {
[INFO] [stdout]   |                                      ------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 7 |    .set_type(Log::Info)?.console(Console::_None)?
[INFO] [stdout]   |                                                 ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()`
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]   |
[INFO] [stdout] 4 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_85_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5 | log4rust::new()
[INFO] [stdout] ...
[INFO] [stdout] 9 |    .unwrap();
[INFO] [stdout] 10+     Ok(())
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/config.rs - config::Config (line 60) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Time`
[INFO] [stdout]  --> src/config.rs:63:11
[INFO] [stdout]   |
[INFO] [stdout] 6 |     .time(Time::Local)
[INFO] [stdout]   |           ^^^^ use of undeclared type `Time`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]   |
[INFO] [stdout] 2 + use log4rust::Time;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Log`
[INFO] [stdout]  --> src/config.rs:64:15
[INFO] [stdout]   |
[INFO] [stdout] 7 |     .set_type(Log::Info)?
[INFO] [stdout]   |               ^^^ use of undeclared type `Log`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]   |
[INFO] [stdout] 2 + use log4rust::Log;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Color`
[INFO] [stdout]  --> src/config.rs:65:16
[INFO] [stdout]   |
[INFO] [stdout] 8 |         .color(Color::TrueColor{r:0,g:255,b:255})?
[INFO] [stdout]   |                ^^^^^ use of undeclared type `Color`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing one of these enums
[INFO] [stdout]   |
[INFO] [stdout] 2 + use colored::Color;
[INFO] [stdout]   |
[INFO] [stdout] 2 + use log4rust::Color;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Console`
[INFO] [stdout]  --> src/config.rs:66:18
[INFO] [stdout]   |
[INFO] [stdout] 9 |         .console(Console::Stdout)?
[INFO] [stdout]   |                  ^^^^^^^ use of undeclared type `Console`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]   |
[INFO] [stdout] 2 + use log4rust::Console;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Backtrace`
[INFO] [stdout]   --> src/config.rs:67:20
[INFO] [stdout]    |
[INFO] [stdout] 10 |         .backtrace(Backtrace::_None)?
[INFO] [stdout]    |                    ^^^^^^^^^ use of undeclared type `Backtrace`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 2  + use std::backtrace::Backtrace;
[INFO] [stdout]    |
[INFO] [stdout] 2  + use backtrace::Backtrace;
[INFO] [stdout]    |
[INFO] [stdout] 2  + use log4rust::Backtrace;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Log`
[INFO] [stdout]   --> src/config.rs:68:15
[INFO] [stdout]    |
[INFO] [stdout] 11 |     .set_type(Log::Warn)?
[INFO] [stdout]    |               ^^^ use of undeclared type `Log`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]    |
[INFO] [stdout] 2  + use log4rust::Log;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Color`
[INFO] [stdout]   --> src/config.rs:69:16
[INFO] [stdout]    |
[INFO] [stdout] 12 |         .color(Color::TrueColor{r:255,g:215,b:185})?
[INFO] [stdout]    |                ^^^^^ use of undeclared type `Color`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these enums
[INFO] [stdout]    |
[INFO] [stdout] 2  + use colored::Color;
[INFO] [stdout]    |
[INFO] [stdout] 2  + use log4rust::Color;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Console`
[INFO] [stdout]   --> src/config.rs:70:18
[INFO] [stdout]    |
[INFO] [stdout] 13 |         .console(Console::Stderr)?
[INFO] [stdout]    |                  ^^^^^^^ use of undeclared type `Console`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]    |
[INFO] [stdout] 2  + use log4rust::Console;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Backtrace`
[INFO] [stdout]   --> src/config.rs:71:20
[INFO] [stdout]    |
[INFO] [stdout] 14 |         .backtrace(Backtrace::_None)?
[INFO] [stdout]    |                    ^^^^^^^^^ use of undeclared type `Backtrace`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 2  + use std::backtrace::Backtrace;
[INFO] [stdout]    |
[INFO] [stdout] 2  + use backtrace::Backtrace;
[INFO] [stdout]    |
[INFO] [stdout] 2  + use log4rust::Backtrace;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Log`
[INFO] [stdout]   --> src/config.rs:72:15
[INFO] [stdout]    |
[INFO] [stdout] 15 |     .set_type(Log::Error)?
[INFO] [stdout]    |               ^^^ use of undeclared type `Log`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]    |
[INFO] [stdout] 2  + use log4rust::Log;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Color`
[INFO] [stdout]   --> src/config.rs:73:16
[INFO] [stdout]    |
[INFO] [stdout] 16 |         .color(Color::TrueColor{r:255,g:100,b:0})?
[INFO] [stdout]    |                ^^^^^ use of undeclared type `Color`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these enums
[INFO] [stdout]    |
[INFO] [stdout] 2  + use colored::Color;
[INFO] [stdout]    |
[INFO] [stdout] 2  + use log4rust::Color;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Console`
[INFO] [stdout]   --> src/config.rs:74:18
[INFO] [stdout]    |
[INFO] [stdout] 17 |         .console(Console::Stderr)?
[INFO] [stdout]    |                  ^^^^^^^ use of undeclared type `Console`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]    |
[INFO] [stdout] 2  + use log4rust::Console;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Backtrace`
[INFO] [stdout]   --> src/config.rs:75:20
[INFO] [stdout]    |
[INFO] [stdout] 18 |         .backtrace(Backtrace::Simple)?
[INFO] [stdout]    |                    ^^^^^^^^^ use of undeclared type `Backtrace`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 2  + use std::backtrace::Backtrace;
[INFO] [stdout]    |
[INFO] [stdout] 2  + use backtrace::Backtrace;
[INFO] [stdout]    |
[INFO] [stdout] 2  + use log4rust::Backtrace;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Log`
[INFO] [stdout]   --> src/config.rs:76:15
[INFO] [stdout]    |
[INFO] [stdout] 19 |     .set_type(Log::Fatal)?
[INFO] [stdout]    |               ^^^ use of undeclared type `Log`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]    |
[INFO] [stdout] 2  + use log4rust::Log;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Color`
[INFO] [stdout]   --> src/config.rs:77:16
[INFO] [stdout]    |
[INFO] [stdout] 20 |         .color(Color::TrueColor{r:255,g:0,b:0})?
[INFO] [stdout]    |                ^^^^^ use of undeclared type `Color`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these enums
[INFO] [stdout]    |
[INFO] [stdout] 2  + use colored::Color;
[INFO] [stdout]    |
[INFO] [stdout] 2  + use log4rust::Color;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Console`
[INFO] [stdout]   --> src/config.rs:78:18
[INFO] [stdout]    |
[INFO] [stdout] 21 |         .console(Console::Stderr)?
[INFO] [stdout]    |                  ^^^^^^^ use of undeclared type `Console`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]    |
[INFO] [stdout] 2  + use log4rust::Console;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Backtrace`
[INFO] [stdout]   --> src/config.rs:79:20
[INFO] [stdout]    |
[INFO] [stdout] 22 |         .backtrace(Backtrace::Complex)?
[INFO] [stdout]    |                    ^^^^^^^^^ use of undeclared type `Backtrace`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 2  + use std::backtrace::Backtrace;
[INFO] [stdout]    |
[INFO] [stdout] 2  + use backtrace::Backtrace;
[INFO] [stdout]    |
[INFO] [stdout] 2  + use log4rust::Backtrace;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]  --> src/config.rs:64:25
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() {
[INFO] [stdout]   |                                      ------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 7 |     .set_type(Log::Info)?
[INFO] [stdout]   |                         ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()`
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]   |
[INFO] [stdout] 4 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5 | log4rust::new()
[INFO] [stdout] ...
[INFO] [stdout] 24|     .unwrap();
[INFO] [stdout] 25+     Ok(())
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]  --> src/config.rs:65:50
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() {
[INFO] [stdout]   |                                      ------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 8 |         .color(Color::TrueColor{r:0,g:255,b:255})?
[INFO] [stdout]   |                                                  ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()`
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]   |
[INFO] [stdout] 4 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5 | log4rust::new()
[INFO] [stdout] ...
[INFO] [stdout] 24|     .unwrap();
[INFO] [stdout] 25+     Ok(())
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]  --> src/config.rs:66:34
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() {
[INFO] [stdout]   |                                      ------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 9 |         .console(Console::Stdout)?
[INFO] [stdout]   |                                  ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()`
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]   |
[INFO] [stdout] 4 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5 | log4rust::new()
[INFO] [stdout] ...
[INFO] [stdout] 24|     .unwrap();
[INFO] [stdout] 25+     Ok(())
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/config.rs:67:37
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() {
[INFO] [stdout]    |                                      ------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 10 |         .backtrace(Backtrace::_None)?
[INFO] [stdout]    |                                     ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()`
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 4  ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5  | log4rust::new()
[INFO] [stdout] ...
[INFO] [stdout] 24 |     .unwrap();
[INFO] [stdout] 25 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/config.rs:68:25
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() {
[INFO] [stdout]    |                                      ------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 11 |     .set_type(Log::Warn)?
[INFO] [stdout]    |                         ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()`
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 4  ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5  | log4rust::new()
[INFO] [stdout] ...
[INFO] [stdout] 24 |     .unwrap();
[INFO] [stdout] 25 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/config.rs:69:52
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() {
[INFO] [stdout]    |                                      ------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 12 |         .color(Color::TrueColor{r:255,g:215,b:185})?
[INFO] [stdout]    |                                                    ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()`
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 4  ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5  | log4rust::new()
[INFO] [stdout] ...
[INFO] [stdout] 24 |     .unwrap();
[INFO] [stdout] 25 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/config.rs:70:34
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() {
[INFO] [stdout]    |                                      ------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 13 |         .console(Console::Stderr)?
[INFO] [stdout]    |                                  ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()`
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 4  ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5  | log4rust::new()
[INFO] [stdout] ...
[INFO] [stdout] 24 |     .unwrap();
[INFO] [stdout] 25 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/config.rs:71:37
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() {
[INFO] [stdout]    |                                      ------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 14 |         .backtrace(Backtrace::_None)?
[INFO] [stdout]    |                                     ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()`
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 4  ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5  | log4rust::new()
[INFO] [stdout] ...
[INFO] [stdout] 24 |     .unwrap();
[INFO] [stdout] 25 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/config.rs:72:26
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() {
[INFO] [stdout]    |                                      ------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 15 |     .set_type(Log::Error)?
[INFO] [stdout]    |                          ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()`
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 4  ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5  | log4rust::new()
[INFO] [stdout] ...
[INFO] [stdout] 24 |     .unwrap();
[INFO] [stdout] 25 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/config.rs:73:50
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() {
[INFO] [stdout]    |                                      ------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 16 |         .color(Color::TrueColor{r:255,g:100,b:0})?
[INFO] [stdout]    |                                                  ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()`
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 4  ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5  | log4rust::new()
[INFO] [stdout] ...
[INFO] [stdout] 24 |     .unwrap();
[INFO] [stdout] 25 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/config.rs:74:34
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() {
[INFO] [stdout]    |                                      ------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 17 |         .console(Console::Stderr)?
[INFO] [stdout]    |                                  ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()`
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 4  ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5  | log4rust::new()
[INFO] [stdout] ...
[INFO] [stdout] 24 |     .unwrap();
[INFO] [stdout] 25 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/config.rs:75:38
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() {
[INFO] [stdout]    |                                      ------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 18 |         .backtrace(Backtrace::Simple)?
[INFO] [stdout]    |                                      ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()`
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 4  ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5  | log4rust::new()
[INFO] [stdout] ...
[INFO] [stdout] 24 |     .unwrap();
[INFO] [stdout] 25 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/config.rs:76:26
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() {
[INFO] [stdout]    |                                      ------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 19 |     .set_type(Log::Fatal)?
[INFO] [stdout]    |                          ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()`
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 4  ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5  | log4rust::new()
[INFO] [stdout] ...
[INFO] [stdout] 24 |     .unwrap();
[INFO] [stdout] 25 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/config.rs:77:48
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() {
[INFO] [stdout]    |                                      ------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 20 |         .color(Color::TrueColor{r:255,g:0,b:0})?
[INFO] [stdout]    |                                                ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()`
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 4  ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5  | log4rust::new()
[INFO] [stdout] ...
[INFO] [stdout] 24 |     .unwrap();
[INFO] [stdout] 25 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/config.rs:78:34
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() {
[INFO] [stdout]    |                                      ------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 21 |         .console(Console::Stderr)?
[INFO] [stdout]    |                                  ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()`
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 4  ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5  | log4rust::new()
[INFO] [stdout] ...
[INFO] [stdout] 24 |     .unwrap();
[INFO] [stdout] 25 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/config.rs:79:39
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() {
[INFO] [stdout]    |                                      ------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 22 |         .backtrace(Backtrace::Complex)?
[INFO] [stdout]    |                                       ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()`
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 4  ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_config_rs_60_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5  | log4rust::new()
[INFO] [stdout] ...
[INFO] [stdout] 24 |     .unwrap();
[INFO] [stdout] 25 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 33 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/config.rs - config::Config (line 60)
[INFO] [stdout]     src/config.rs - config::Config (line 85)
[INFO] [stdout]     src/lib.rs - (line 8)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 3 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "d0693e206788fc6c022d2780b02baa764a91f1d8ef4ba45bcca6d7158b7077ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0693e206788fc6c022d2780b02baa764a91f1d8ef4ba45bcca6d7158b7077ec", kill_on_drop: false }`
[INFO] [stdout] d0693e206788fc6c022d2780b02baa764a91f1d8ef4ba45bcca6d7158b7077ec
