error[E0432]: unresolved import `postgres`
 --> /tmp/rust-skepticJWb0vA/test.rs:2:5
  |
2 | use postgres::{Client, Error, NoTls};
  |     ^^^^^^^^ use of undeclared crate or module `postgres`

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0432`.

thread 'aggregate_data_sect_aggregate_data_line_7' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skepticJWb0vA/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "--emit=dep-info=/tmp/rust-skepticJWb0vA/out.exe.d,metadata=/tmp/rust-skepticJWb0vA/out.exe.m"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::compile_test
   5: skeptic::aggregate_data_sect_aggregate_data_line_7
   6: skeptic::aggregate_data_sect_aggregate_data_line_7::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0432]: unresolved import `rand`
 --> /tmp/rust-skepticp5cbHH/test.rs:2:5
  |
2 | use rand::Rng;
  |     ^^^^ use of undeclared crate or module `rand`

error[E0433]: failed to resolve: use of undeclared crate or module `rand`
 --> /tmp/rust-skepticp5cbHH/test.rs:5:19
  |
5 |     let mut rng = rand::thread_rng();
  |                   ^^^^ use of undeclared crate or module `rand`

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0432, E0433.
For more information about an error, try `rustc --explain E0432`.

thread 'about_sect_how_to_use_the_recipes_line_59' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skepticp5cbHH/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "-o" "/tmp/rust-skepticp5cbHH/out.exe"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::run_test
   5: skeptic::about_sect_how_to_use_the_recipes_line_59
   6: skeptic::about_sect_how_to_use_the_recipes_line_59::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0433]: failed to resolve: use of undeclared crate or module `num`
 --> /tmp/rust-skepticGsMM2o/test.rs:3:24
  |
3 |     let complex_num1 = num::complex::Complex::new(10.0, 20.0); // Must use floats
  |                        ^^^ use of undeclared crate or module `num`

error[E0433]: failed to resolve: use of undeclared crate or module `num`
 --> /tmp/rust-skepticGsMM2o/test.rs:4:24
  |
4 |     let complex_num2 = num::complex::Complex::new(3.1, -4.2);
  |                        ^^^ use of undeclared crate or module `num`

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0433`.

thread 'add_complex_sect_adding_complex_numbers_line_9' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skepticGsMM2o/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "-o" "/tmp/rust-skepticGsMM2o/out.exe"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::run_test
   5: skeptic::add_complex_sect_adding_complex_numbers_line_9
   6: skeptic::add_complex_sect_adding_complex_numbers_line_9::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0432]: unresolved import `ndarray`
 --> /tmp/rust-skepticqGnsgY/test.rs:2:5
  |
2 | use ndarray::arr2;
  |     ^^^^^^^ use of undeclared crate or module `ndarray`

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0432`.

thread 'add_matrices_sect_adding_matrices_line_8' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skepticqGnsgY/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "-o" "/tmp/rust-skepticqGnsgY/out.exe"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::run_test
   5: skeptic::add_matrices_sect_adding_matrices_line_8
   6: skeptic::add_matrices_sect_adding_matrices_line_8::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0432]: unresolved import `ansi_term`
 --> /tmp/rust-skeptic6vka1y/test.rs:2:5
  |
2 | use ansi_term::Colour;
  |     ^^^^^^^^^ use of undeclared crate or module `ansi_term`

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0432`.

thread 'ansi_term_basic_sect_ansi_terminal_line_13' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skeptic6vka1y/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "-o" "/tmp/rust-skeptic6vka1y/out.exe"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::run_test
   5: skeptic::ansi_term_basic_sect_ansi_terminal_line_13
   6: skeptic::ansi_term_basic_sect_ansi_terminal_line_13::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0432]: unresolved import `ansi_term`
 --> /tmp/rust-skeptic5wcQQj/test.rs:2:5
  |
2 | use ansi_term::Style;
  |     ^^^^^^^^^ use of undeclared crate or module `ansi_term`

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0432`.

thread 'ansi_term_basic_sect_ansi_terminal_line_30' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skeptic5wcQQj/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "-o" "/tmp/rust-skeptic5wcQQj/out.exe"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::run_test
   5: skeptic::ansi_term_basic_sect_ansi_terminal_line_30
   6: skeptic::ansi_term_basic_sect_ansi_terminal_line_30::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0432]: unresolved import `ansi_term`
 --> /tmp/rust-skeptic9SKLW1/test.rs:2:5
  |
2 | use ansi_term::Colour;
  |     ^^^^^^^^^ use of undeclared crate or module `ansi_term`

error[E0432]: unresolved import `ansi_term`
 --> /tmp/rust-skeptic9SKLW1/test.rs:3:5
  |
3 | use ansi_term::Style;
  |     ^^^^^^^^^ use of undeclared crate or module `ansi_term`

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0432`.

thread 'ansi_term_basic_sect_ansi_terminal_line_42' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skeptic9SKLW1/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "-o" "/tmp/rust-skeptic9SKLW1/out.exe"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::run_test
   5: skeptic::ansi_term_basic_sect_ansi_terminal_line_42
   6: skeptic::ansi_term_basic_sect_ansi_terminal_line_42::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0432]: unresolved import `error_chain`
 --> /tmp/rust-skepticWWDkOc/test.rs:2:5
  |
2 | use error_chain::error_chain;
  |     ^^^^^^^^^^^ use of undeclared crate or module `error_chain`

error[E0432]: unresolved import `serde`
 --> /tmp/rust-skepticWWDkOc/test.rs:4:5
  |
4 | use serde::Deserialize;
  |     ^^^^^ use of undeclared crate or module `serde`

error[E0433]: failed to resolve: use of undeclared crate or module `csv`
  --> /tmp/rust-skepticWWDkOc/test.rs:40:26
   |
40 |         let color: Rgb = csv::Reader::from_reader(csv_data)
   |                          ^^^ use of undeclared crate or module `csv`

error[E0107]: enum takes 2 generic arguments but 1 generic argument was supplied
  --> /tmp/rust-skepticWWDkOc/test.rs:72:13
   |
72 | fn run() -> Result<()> {
   |             ^^^^^^ -- supplied 1 generic argument
   |             |
   |             expected 2 generic arguments
   |
help: add missing generic argument
   |
72 | fn run() -> Result<(), E> {
   |                      +++

error[E0107]: enum takes 2 generic arguments but 1 generic argument was supplied
  --> /tmp/rust-skepticWWDkOc/test.rs:38:40
   |
38 |     fn from_reader(csv_data: &[u8]) -> Result<Rgb> {
   |                                        ^^^^^^ --- supplied 1 generic argument
   |                                        |
   |                                        expected 2 generic arguments
   |
help: add missing generic argument
   |
38 |     fn from_reader(csv_data: &[u8]) -> Result<Rgb, E> {
   |                                                  +++

error: aborting due to 5 previous errors

Some errors have detailed explanations: E0107, E0432, E0433.
For more information about an error, try `rustc --explain E0107`.

thread 'backtrace_sect_obtain_backtrace_of_complex_error_scenarios_line_14' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skepticWWDkOc/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "-o" "/tmp/rust-skepticWWDkOc/out.exe"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::run_test
   5: skeptic::backtrace_sect_obtain_backtrace_of_complex_error_scenarios_line_14
   6: skeptic::backtrace_sect_obtain_backtrace_of_complex_error_scenarios_line_14::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0432]: unresolved import `error_chain`
 --> /tmp/rust-skepticbs5pXV/test.rs:2:5
  |
2 | use error_chain::error_chain;
  |     ^^^^^^^^^^^ use of undeclared crate or module `error_chain`

error[E0432]: unresolved import `base64`
 --> /tmp/rust-skepticbs5pXV/test.rs:5:5
  |
5 | use base64::{encode, decode};
  |     ^^^^^^ use of undeclared crate or module `base64`

error[E0107]: enum takes 2 generic arguments but 1 generic argument was supplied
  --> /tmp/rust-skepticbs5pXV/test.rs:14:14
   |
14 | fn main() -> Result<()> {
   |              ^^^^^^ -- supplied 1 generic argument
   |              |
   |              expected 2 generic arguments
   |
help: add missing generic argument
   |
14 | fn main() -> Result<(), E> {
   |                       +++

error: aborting due to 3 previous errors

Some errors have detailed explanations: E0107, E0432.
For more information about an error, try `rustc --explain E0107`.

thread 'base64_sect_encode_and_decode_base64_line_8' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skepticbs5pXV/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "-o" "/tmp/rust-skepticbs5pXV/out.exe"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::run_test
   5: skeptic::base64_sect_encode_and_decode_base64_line_8
   6: skeptic::base64_sect_encode_and_decode_base64_line_8::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0432]: unresolved import `error_chain`
 --> /tmp/rust-skepticGoVeZ3/test.rs:2:5
  |
2 | use error_chain::error_chain;
  |     ^^^^^^^^^^^ use of undeclared crate or module `error_chain`

error[E0432]: unresolved import `url`
 --> /tmp/rust-skepticGoVeZ3/test.rs:5:5
  |
5 | use url::Url;
  |     ^^^ use of undeclared crate or module `url`

error[E0433]: failed to resolve: use of undeclared type `Error`
  --> /tmp/rust-skepticGoVeZ3/test.rs:58:24
   |
58 |             return Err(Error::from_kind(ErrorKind::CannotBeABase));
   |                        ^^^^^ use of undeclared type `Error`
   |
help: consider importing one of these items
   |
2  + use std::error::Error;
   |
2  + use std::fmt::Error;
   |
2  + use std::io::Error;
   |
2  + use core::error::Error;
   |
     and 1 other candidate

error[E0433]: failed to resolve: use of undeclared type `ErrorKind`
  --> /tmp/rust-skepticGoVeZ3/test.rs:58:41
   |
58 |             return Err(Error::from_kind(ErrorKind::CannotBeABase));
   |                                         ^^^^^^^^^ use of undeclared type `ErrorKind`
   |
help: consider importing this enum
   |
2  + use std::io::ErrorKind;
   |

error[E0107]: enum takes 2 generic arguments but 1 generic argument was supplied
  --> /tmp/rust-skepticGoVeZ3/test.rs:26:14
   |
26 | fn main() -> Result<()> {
   |              ^^^^^^ -- supplied 1 generic argument
   |              |
   |              expected 2 generic arguments
   |
help: add missing generic argument
   |
26 | fn main() -> Result<(), E> {
   |                       +++

error[E0107]: enum takes 2 generic arguments but 1 generic argument was supplied
  --> /tmp/rust-skepticGoVeZ3/test.rs:46:30
   |
46 | fn base_url(mut url: Url) -> Result<Url> {
   |                              ^^^^^^ --- supplied 1 generic argument
   |                              |
   |                              expected 2 generic arguments
   |
help: add missing generic argument
   |
46 | fn base_url(mut url: Url) -> Result<Url, E> {
   |                                        +++

error: aborting due to 6 previous errors

Some errors have detailed explanations: E0107, E0432, E0433.
For more information about an error, try `rustc --explain E0107`.

thread 'base_sect_create_a_base_url_by_removing_path_segments_line_10' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skepticGoVeZ3/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "-o" "/tmp/rust-skepticGoVeZ3/out.exe"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::run_test
   5: skeptic::base_sect_create_a_base_url_by_removing_path_segments_line_10
   6: skeptic::base_sect_create_a_base_url_by_removing_path_segments_line_10::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0433]: failed to resolve: use of undeclared crate or module `reqwest`
 --> /tmp/rust-skepticLv8JzK/test.rs:2:5
  |
2 | use reqwest::blocking::Client;
  |     ^^^^^^^ use of undeclared crate or module `reqwest`

error[E0432]: unresolved import `reqwest`
 --> /tmp/rust-skepticLv8JzK/test.rs:4:5
  |
4 | use reqwest::Error;
  |     ^^^^^^^ use of undeclared crate or module `reqwest`

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0432, E0433.
For more information about an error, try `rustc --explain E0432`.

thread 'basic_sect_basic_authentication_line_7' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skepticLv8JzK/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "--emit=dep-info=/tmp/rust-skepticLv8JzK/out.exe.d,metadata=/tmp/rust-skepticLv8JzK/out.exe.m"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::compile_test
   5: skeptic::basic_sect_basic_authentication_line_7
   6: skeptic::basic_sect_basic_authentication_line_7::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0432]: unresolved import `error_chain`
 --> /tmp/rust-skepticeUHgjc/test.rs:2:5
  |
2 | use error_chain::error_chain;
  |     ^^^^^^^^^^^ use of undeclared crate or module `error_chain`

error[E0432]: unresolved import `tempfile`
 --> /tmp/rust-skepticeUHgjc/test.rs:8:5
  |
8 | use tempfile::Builder;
  |     ^^^^^^^^ use of undeclared crate or module `tempfile`

error[E0433]: failed to resolve: use of undeclared crate or module `tokio`
  --> /tmp/rust-skepticeUHgjc/test.rs:24:3
   |
24 | #[tokio::main]
   |   ^^^^^ use of undeclared crate or module `tokio`

error[E0107]: enum takes 2 generic arguments but 1 generic argument was supplied
  --> /tmp/rust-skepticeUHgjc/test.rs:26:20
   |
26 | async fn main() -> Result<()> {
   |                    ^^^^^^ -- supplied 1 generic argument
   |                    |
   |                    expected 2 generic arguments
   |
help: add missing generic argument
   |
26 | async fn main() -> Result<(), E> {
   |                             +++

error[E0433]: failed to resolve: use of undeclared crate or module `reqwest`
  --> /tmp/rust-skepticeUHgjc/test.rs:32:20
   |
32 |     let response = reqwest::get(target).await?;
   |                    ^^^^^^^ use of undeclared crate or module `reqwest`

error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
  --> /tmp/rust-skepticeUHgjc/test.rs:60:9
   |
60 |     let content =  response.bytes().await?;
   |         ^^^^^^^ doesn't have a size known at compile-time
   |
   = help: the trait `Sized` is not implemented for `[u8]`
   = note: all local variables must have a statically known size
   = help: unsized locals are gated as an unstable feature

error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
  --> /tmp/rust-skepticeUHgjc/test.rs:60:20
   |
60 |     let content =  response.bytes().await?;
   |                    ^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
   |
   = help: the trait `Sized` is not implemented for `[u8]`
   = note: all local variables must have a statically known size
   = help: unsized locals are gated as an unstable feature

error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
  --> /tmp/rust-skepticeUHgjc/test.rs:60:42
   |
60 |     let content =  response.bytes().await?;
   |                                          ^ doesn't have a size known at compile-time
   |
   = help: the trait `Sized` is not implemented for `[u8]`
note: required by a bound in `Break`
  --> /rustc/824759493246ee383beb9cd5ceffa0e15deb9fa4/library/core/src/ops/control_flow.rs:94:5

error[E0752]: `main` function is not allowed to be `async`
  --> /tmp/rust-skepticeUHgjc/test.rs:26:1
   |
26 | async fn main() -> Result<()> {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `main` function is not allowed to be `async`

error: aborting due to 9 previous errors

Some errors have detailed explanations: E0107, E0277, E0432, E0433, E0752.
For more information about an error, try `rustc --explain E0107`.

thread 'basic_sect_download_a_file_to_a_temporary_directory_line_12' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skepticeUHgjc/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "--emit=dep-info=/tmp/rust-skepticeUHgjc/out.exe.d,metadata=/tmp/rust-skepticeUHgjc/out.exe.m"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::compile_test
   5: skeptic::basic_sect_download_a_file_to_a_temporary_directory_line_12
   6: skeptic::basic_sect_download_a_file_to_a_temporary_directory_line_12::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0433]: failed to resolve: use of undeclared crate or module `num`
 --> /tmp/rust-skepticA5J1wL/test.rs:2:5
  |
2 | use num::bigint::{BigInt, ToBigInt};
  |     ^^^ use of undeclared crate or module `num`

error[E0599]: no method named `to_bigint` found for type `{integer}` in the current scope
 --> /tmp/rust-skepticA5J1wL/test.rs:5:36
  |
5 |     if let Some(mut factorial) = 1.to_bigint() {
  |                                    ^^^^^^^^^ method not found in `{integer}`

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0433, E0599.
For more information about an error, try `rustc --explain E0433`.

thread 'big_integers_sect_big_integers_line_7' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skepticA5J1wL/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "-o" "/tmp/rust-skepticA5J1wL/out.exe"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::run_test
   5: skeptic::big_integers_sect_big_integers_line_7
   6: skeptic::big_integers_sect_big_integers_line_7::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0432]: unresolved import `bitflags`
 --> /tmp/rust-skeptic8YcChB/test.rs:2:5
  |
2 | use bitflags::bitflags;
  |     ^^^^^^^^ use of undeclared crate or module `bitflags`

error[E0412]: cannot find type `MyFlags` in this scope
  --> /tmp/rust-skeptic8YcChB/test.rs:16:6
   |
16 | impl MyFlags {
   |      ^^^^^^^ not found in this scope

error[E0412]: cannot find type `MyFlags` in this scope
  --> /tmp/rust-skeptic8YcChB/test.rs:17:37
   |
17 |     pub fn clear(&mut self) -> &mut MyFlags {
   |                                     ^^^^^^^ not found in this scope

error[E0412]: cannot find type `MyFlags` in this scope
  --> /tmp/rust-skeptic8YcChB/test.rs:23:23
   |
23 | impl fmt::Display for MyFlags {
   |                       ^^^^^^^ not found in this scope

error[E0433]: failed to resolve: use of undeclared type `MyFlags`
  --> /tmp/rust-skeptic8YcChB/test.rs:30:14
   |
30 |     let e1 = MyFlags::FLAG_A | MyFlags::FLAG_C;
   |              ^^^^^^^ use of undeclared type `MyFlags`

error[E0433]: failed to resolve: use of undeclared type `MyFlags`
  --> /tmp/rust-skeptic8YcChB/test.rs:30:32
   |
30 |     let e1 = MyFlags::FLAG_A | MyFlags::FLAG_C;
   |                                ^^^^^^^ use of undeclared type `MyFlags`

error[E0433]: failed to resolve: use of undeclared type `MyFlags`
  --> /tmp/rust-skeptic8YcChB/test.rs:31:14
   |
31 |     let e2 = MyFlags::FLAG_B | MyFlags::FLAG_C;
   |              ^^^^^^^ use of undeclared type `MyFlags`

error[E0433]: failed to resolve: use of undeclared type `MyFlags`
  --> /tmp/rust-skeptic8YcChB/test.rs:31:32
   |
31 |     let e2 = MyFlags::FLAG_B | MyFlags::FLAG_C;
   |                                ^^^^^^^ use of undeclared type `MyFlags`

error[E0433]: failed to resolve: use of undeclared type `MyFlags`
  --> /tmp/rust-skeptic8YcChB/test.rs:32:27
   |
32 |     assert_eq!((e1 | e2), MyFlags::FLAG_ABC);   
   |                           ^^^^^^^ use of undeclared type `MyFlags`

error[E0433]: failed to resolve: use of undeclared type `MyFlags`
  --> /tmp/rust-skeptic8YcChB/test.rs:33:27
   |
33 |     assert_eq!((e1 & e2), MyFlags::FLAG_C);    
   |                           ^^^^^^^ use of undeclared type `MyFlags`

error[E0433]: failed to resolve: use of undeclared type `MyFlags`
  --> /tmp/rust-skeptic8YcChB/test.rs:34:27
   |
34 |     assert_eq!((e1 - e2), MyFlags::FLAG_A);    
   |                           ^^^^^^^ use of undeclared type `MyFlags`

error[E0433]: failed to resolve: use of undeclared type `MyFlags`
  --> /tmp/rust-skeptic8YcChB/test.rs:35:21
   |
35 |     assert_eq!(!e2, MyFlags::FLAG_A);           
   |                     ^^^^^^^ use of undeclared type `MyFlags`

error[E0433]: failed to resolve: use of undeclared type `MyFlags`
  --> /tmp/rust-skeptic8YcChB/test.rs:37:21
   |
37 |     let mut flags = MyFlags::FLAG_ABC;
   |                     ^^^^^^^ use of undeclared type `MyFlags`

error[E0433]: failed to resolve: use of undeclared type `MyFlags`
  --> /tmp/rust-skeptic8YcChB/test.rs:40:32
   |
40 |     assert_eq!(format!("{:?}", MyFlags::FLAG_B), "FLAG_B");
   |                                ^^^^^^^ use of undeclared type `MyFlags`

error[E0433]: failed to resolve: use of undeclared type `MyFlags`
  --> /tmp/rust-skeptic8YcChB/test.rs:41:32
   |
41 |     assert_eq!(format!("{:?}", MyFlags::FLAG_A | MyFlags::FLAG_B), "FLAG_A | FLAG_B");
   |                                ^^^^^^^ use of undeclared type `MyFlags`

error[E0433]: failed to resolve: use of undeclared type `MyFlags`
  --> /tmp/rust-skeptic8YcChB/test.rs:41:50
   |
41 |     assert_eq!(format!("{:?}", MyFlags::FLAG_A | MyFlags::FLAG_B), "FLAG_A | FLAG_B");
   |                                                  ^^^^^^^ use of undeclared type `MyFlags`

error: aborting due to 16 previous errors

Some errors have detailed explanations: E0412, E0432, E0433.
For more information about an error, try `rustc --explain E0412`.

thread 'bitfield_sect_define_and_operate_on_a_type_represented_as_a_bitfield_line_9' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skeptic8YcChB/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "-o" "/tmp/rust-skeptic8YcChB/out.exe"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::run_test
   5: skeptic::bitfield_sect_define_and_operate_on_a_type_represented_as_a_bitfield_line_9
   6: skeptic::bitfield_sect_define_and_operate_on_a_type_represented_as_a_bitfield_line_9::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error: expected item, found `{`
 --> /tmp/rust-skepticIq5cz2/test.rs:4:3
  |
4 |   {{#include ../../../crates/web/src/broken.rs}}
  |   ^ expected item
  |
  = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>

error: aborting due to 1 previous error


thread 'broken_sect_check_a_webpage_for_broken_links_line_14' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skepticIq5cz2/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "-o" "/tmp/rust-skepticIq5cz2/out.exe"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::run_test
   5: skeptic::broken_sect_check_a_webpage_for_broken_links_line_14
   6: skeptic::broken_sect_check_a_webpage_for_broken_links_line_14::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0433]: failed to resolve: use of undeclared crate or module `cc`
 --> /tmp/rust-skepticpE0iMC/test.rs:3:5
  |
3 |     cc::Build::new()
  |     ^^ use of undeclared crate or module `cc`

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0433`.

thread 'cc_bundled_cpp_sect_compile_and_link_statically_to_a_bundled_c_library_line_21' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skepticpE0iMC/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "--emit=dep-info=/tmp/rust-skepticpE0iMC/out.exe.d,metadata=/tmp/rust-skepticpE0iMC/out.exe.m"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::compile_test
   5: skeptic::cc_bundled_cpp_sect_compile_and_link_statically_to_a_bundled_c_library_line_21
   6: skeptic::cc_bundled_cpp_sect_compile_and_link_statically_to_a_bundled_c_library_line_21::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0433]: failed to resolve: use of undeclared crate or module `cc`
 --> /tmp/rust-skepticOGx7ez/test.rs:3:5
  |
3 |     cc::Build::new()
  |     ^^ use of undeclared crate or module `cc`

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0433`.

thread 'cc_bundled_static_sect_compile_and_link_statically_to_a_bundled_c_library_line_33' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skepticOGx7ez/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "--emit=dep-info=/tmp/rust-skepticOGx7ez/out.exe.d,metadata=/tmp/rust-skepticOGx7ez/out.exe.m"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::compile_test
   5: skeptic::cc_bundled_static_sect_compile_and_link_statically_to_a_bundled_c_library_line_33
   6: skeptic::cc_bundled_static_sect_compile_and_link_statically_to_a_bundled_c_library_line_33::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0433]: failed to resolve: use of undeclared crate or module `cc`
 --> /tmp/rust-skepticuSsLTd/test.rs:3:5
  |
3 |     cc::Build::new()
  |     ^^ use of undeclared crate or module `cc`

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0433`.

thread 'cc_defines_sect_compile_a_c_library_while_setting_custom_defines_line_26' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skepticuSsLTd/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "--emit=dep-info=/tmp/rust-skepticuSsLTd/out.exe.d,metadata=/tmp/rust-skepticuSsLTd/out.exe.m"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::compile_test
   5: skeptic::cc_defines_sect_compile_a_c_library_while_setting_custom_defines_line_26
   6: skeptic::cc_defines_sect_compile_a_c_library_while_setting_custom_defines_line_26::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0432]: unresolved import `chrono`
 --> /tmp/rust-skepticJSR3ZI/test.rs:2:5
  |
2 | use chrono::{DateTime, Duration, Utc};
  |     ^^^^^^ use of undeclared crate or module `chrono`

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0432`.

thread 'checked_sect_perform_checked_date_and_time_calculations_line_13' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skepticJSR3ZI/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "-o" "/tmp/rust-skepticJSR3ZI/out.exe"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::run_test
   5: skeptic::checked_sect_perform_checked_date_and_time_calculations_line_13
   6: skeptic::checked_sect_perform_checked_date_and_time_calculations_line_13::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0433]: failed to resolve: use of undeclared crate or module `clap`
 --> /tmp/rust-skeptic2x8AYv/test.rs:4:5
  |
4 | use clap::{Arg, Command, builder::PathBufValueParser};
  |     ^^^^ use of undeclared crate or module `clap`

error[E0432]: unresolved import `clap`
 --> /tmp/rust-skeptic2x8AYv/test.rs:4:5
  |
4 | use clap::{Arg, Command, builder::PathBufValueParser};
  |     ^^^^ use of undeclared crate or module `clap`

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0432, E0433.
For more information about an error, try `rustc --explain E0432`.

thread 'clap_basic_sect_parse_command_line_arguments_line_25' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skeptic2x8AYv/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "-o" "/tmp/rust-skeptic2x8AYv/out.exe"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::run_test
   5: skeptic::clap_basic_sect_parse_command_line_arguments_line_25
   6: skeptic::clap_basic_sect_parse_command_line_arguments_line_25::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0433]: failed to resolve: use of undeclared crate or module `num_cpus`
 --> /tmp/rust-skepticbLPwah/test.rs:3:47
  |
3 |     println!("Number of logical cores is {}", num_cpus::get());
  |                                               ^^^^^^^^ use of undeclared crate or module `num_cpus`

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0433`.

thread 'cpu_count_sect_check_number_of_logical_cpu_cores_line_7' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skepticbLPwah/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "-o" "/tmp/rust-skepticbLPwah/out.exe"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::run_test
   5: skeptic::cpu_count_sect_check_number_of_logical_cpu_cores_line_7
   6: skeptic::cpu_count_sect_check_number_of_logical_cpu_cores_line_7::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0433]: failed to resolve: use of undeclared crate or module `num`
 --> /tmp/rust-skeptic0w5aZY/test.rs:3:27
  |
3 |     let complex_integer = num::complex::Complex::new(10, 20);
  |                           ^^^ use of undeclared crate or module `num`

error[E0433]: failed to resolve: use of undeclared crate or module `num`
 --> /tmp/rust-skeptic0w5aZY/test.rs:4:25
  |
4 |     let complex_float = num::complex::Complex::new(10.1, 20.1);
  |                         ^^^ use of undeclared crate or module `num`

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0433`.

thread 'create_complex_sect_creating_complex_numbers_line_8' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skeptic0w5aZY/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "-o" "/tmp/rust-skeptic0w5aZY/out.exe"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::run_test
   5: skeptic::create_complex_sect_creating_complex_numbers_line_8
   6: skeptic::create_complex_sect_creating_complex_numbers_line_8::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0432]: unresolved import `postgres`
 --> /tmp/rust-skepticpdv0J1/test.rs:2:5
  |
2 | use postgres::{Client, NoTls, Error};
  |     ^^^^^^^^ use of undeclared crate or module `postgres`

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0432`.

thread 'create_tables_sect_create_tables_in_a_postgres_database_line_9' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skepticpdv0J1/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "--emit=dep-info=/tmp/rust-skepticpdv0J1/out.exe.d,metadata=/tmp/rust-skepticpdv0J1/out.exe.m"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::compile_test
   5: skeptic::create_tables_sect_create_tables_in_a_postgres_database_line_9
   6: skeptic::create_tables_sect_create_tables_in_a_postgres_database_line_9::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0432]: unresolved import `crossbeam_channel`
 --> /tmp/rust-skepticUVLCCT/test.rs:4:5
  |
4 | use crossbeam_channel::bounded;
  |     ^^^^^^^^^^^^^^^^^ use of undeclared crate or module `crossbeam_channel`

error[E0433]: failed to resolve: use of undeclared crate or module `crossbeam`
  --> /tmp/rust-skepticUVLCCT/test.rs:12:5
   |
12 |     crossbeam::scope(|s| {
   |     ^^^^^^^^^ use of undeclared crate or module `crossbeam`

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0432, E0433.
For more information about an error, try `rustc --explain E0432`.

thread 'crossbeam_complex_sect_create_a_parallel_pipeline_line_27' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skepticUVLCCT/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "-o" "/tmp/rust-skepticUVLCCT/out.exe"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::run_test
   5: skeptic::crossbeam_complex_sect_create_a_parallel_pipeline_line_27
   6: skeptic::crossbeam_complex_sect_create_a_parallel_pipeline_line_27::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error[E0433]: failed to resolve: use of undeclared crate or module `crossbeam`
  --> /tmp/rust-skepticxNLqiM/test.rs:18:5
   |
18 |     crossbeam::scope(|s| {
   |     ^^^^^^^^^ use of undeclared crate or module `crossbeam`

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0433`.

thread 'crossbeam_spawn_sect_spawn_a_short_lived_thread_line_12' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/skeptic-0.13.7/src/rt.rs:127:9:
Command failed:
"rustc" "/tmp/rust-skepticxNLqiM/test.rs" "--verbose" "--crate-type=bin" "--edition=2021" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug" "-L" "/home/runner/work/rust-cookbook/rust-cookbook/target/debug/deps" "--target" "x86_64-unknown-linux-gnu" "-o" "/tmp/rust-skepticxNLqiM/out.exe"
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: skeptic::rt::interpret_output
   3: skeptic::rt::handle_test
   4: skeptic::rt::run_test
   5: skeptic::crossbeam_spawn_sect_spawn_a_short_lived_thread_line_12
   6: skeptic::crossbeam_spawn_sect_spawn_a_short_lived_thread_line_12::{{closure}}
   7: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.