[INFO] fetching crate creche 0.2.1...
[INFO] testing creche-0.2.1 against 1.97.0-beta.6 for beta-1.98-1
[INFO] extracting crate creche 0.2.1 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate creche 0.2.1
[INFO] finished tweaking crates.io crate creche 0.2.1
[INFO] tweaked toml for crates.io crate creche 0.2.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate creche 0.2.1 on toolchain 1.97.0-beta.6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.97.0-beta.6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate creche 0.2.1 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" "+1.97.0-beta.6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] ab134886a235b7cdc3a47a1864b5f4ac2b43ce9252ecb907d6c92333b75dba3d
[INFO] running `Command { std: "docker" "start" "ab134886a235b7cdc3a47a1864b5f4ac2b43ce9252ecb907d6c92333b75dba3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab134886a235b7cdc3a47a1864b5f4ac2b43ce9252ecb907d6c92333b75dba3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "ab134886a235b7cdc3a47a1864b5f4ac2b43ce9252ecb907d6c92333b75dba3d" "/opt/rustwide/cargo-home/bin/cargo" "+1.97.0-beta.6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab134886a235b7cdc3a47a1864b5f4ac2b43ce9252ecb907d6c92333b75dba3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "ab134886a235b7cdc3a47a1864b5f4ac2b43ce9252ecb907d6c92333b75dba3d" "/opt/rustwide/cargo-home/bin/cargo" "+1.97.0-beta.6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling nix v0.29.0
[INFO] [stderr]    Compiling bitflags v2.6.0
[INFO] [stderr]    Compiling creche v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.12s
[INFO] running `Command { std: "docker" "inspect" "ab134886a235b7cdc3a47a1864b5f4ac2b43ce9252ecb907d6c92333b75dba3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "ab134886a235b7cdc3a47a1864b5f4ac2b43ce9252ecb907d6c92333b75dba3d" "/opt/rustwide/cargo-home/bin/cargo" "+1.97.0-beta.6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling creche v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "ab134886a235b7cdc3a47a1864b5f4ac2b43ce9252ecb907d6c92333b75dba3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "ab134886a235b7cdc3a47a1864b5f4ac2b43ce9252ecb907d6c92333b75dba3d" "/opt/rustwide/cargo-home/bin/cargo" "+1.97.0-beta.6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/creche-be40a3f2f421fdcd)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests creche
[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] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/ioconfig.rs - ioconfig::RedirectToFd (line 254) ... FAILED
[INFO] [stdout] test src/creche.rs - creche::ChildBuilder (line 21) ... FAILED
[INFO] [stdout] test src/creche.rs - creche::ChildBuilder (line 35) ... FAILED
[INFO] [stdout] test src/pipeline.rs - pipeline::SimplePipelineBuilder (line 23) ... FAILED
[INFO] [stdout] test src/creche.rs - creche::ChildHandle (line 281) ... FAILED
[INFO] [stdout] test src/ioconfig.rs - ioconfig::interprocess_pipe (line 172) ... FAILED
[INFO] [stdout] test src/ioconfig.rs - ioconfig::RedirectToFd (line 271) ... FAILED
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] [stdout] test src/envconfig.rs - envconfig::EnvironmentBuilder (line 77) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/ioconfig.rs - ioconfig::RedirectToFd (line 254) stdout ----
[INFO] [stdout] error[E0433]: cannot find module or crate `ioconfig` in this scope
[INFO] [stdout]    --> src/ioconfig.rs:263:25
[INFO] [stdout]     |
[INFO] [stdout] 263 | let logfile_io_config = ioconfig::RedirectToFd::new(file, 2);
[INFO] [stdout]     |                         ^^^^^^^^ use of unresolved module or unlinked crate `ioconfig`
[INFO] [stdout]     |
[INFO] [stdout] help: to make use of source file src/ioconfig.rs, use `mod ioconfig` in this file to declare the module
[INFO] [stdout]     |
[INFO] [stdout] 254 + mod ioconfig;
[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/ioconfig.rs:258:34
[INFO] [stdout]     |
[INFO] [stdout] 254 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_ioconfig_rs_254_0() {
[INFO] [stdout]     |                                      ---------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 258 | let file = f_opts.open("logfile")?;
[INFO] [stdout]     |                                  ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]     |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]     |
[INFO] [stdout] 254 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_ioconfig_rs_254_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 255 | // set up log file
[INFO] [stdout] ...
[INFO] [stdout] 267 | println!("{:?}", child.wait());
[INFO] [stdout] 268 +     Ok(())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `ChildBuilder` in this scope
[INFO] [stdout]    --> src/ioconfig.rs:261:15
[INFO] [stdout]     |
[INFO] [stdout] 261 | let mut cmd = ChildBuilder::new("cat");
[INFO] [stdout]     |               ^^^^^^^^^^^^ use of undeclared type `ChildBuilder`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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/creche.rs - creche::ChildBuilder (line 21) stdout ----
[INFO] [stdout] error[E0599]: cannot write into `File`
[INFO] [stdout]   --> src/creche.rs:30:10
[INFO] [stdout]    |
[INFO] [stdout] 30 | writeln!(f, "this is a test message");
[INFO] [stdout]    |          ^
[INFO] [stdout]    |
[INFO] [stdout]   --> /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/io/mod.rs:1973:7
[INFO] [stdout]    |
[INFO] [stdout]    = note: the method is available for `File` here
[INFO] [stdout] note: must implement `io::Write`, `fmt::Write`, or have a `write_fmt` method
[INFO] [stdout]   --> src/creche.rs:30:10
[INFO] [stdout]    |
[INFO] [stdout] 30 | writeln!(f, "this is a test message");
[INFO] [stdout]    |          ^
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `Write` which provides `write_fmt` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]    |
[INFO] [stdout] 20 + use std::io::Write;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/creche.rs - creche::ChildBuilder (line 35) stdout ----
[INFO] [stdout] error[E0433]: cannot find type `ChildBuilder` in this scope
[INFO] [stdout]   --> src/creche.rs:37:15
[INFO] [stdout]    |
[INFO] [stdout] 37 | let mut cmd = ChildBuilder::new("ls");
[INFO] [stdout]    |               ^^^^^^^^^^^^ use of undeclared type `ChildBuilder`
[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/creche.rs:46:40
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_creche_rs_35_0() {
[INFO] [stdout]    |                                      ------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 46 | let output = std::io::read_to_string(f)?;
[INFO] [stdout]    |                                        ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 35 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_creche_rs_35_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 36 | // configure the child process
[INFO] [stdout] ...
[INFO] [stdout] 49 | println!("exit status: {:?}", child.wait());
[INFO] [stdout] 50 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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/pipeline.rs - pipeline::SimplePipelineBuilder (line 23) stdout ----
[INFO] [stdout] error[E0433]: cannot find type `ChildBuilder` in this scope
[INFO] [stdout]   --> src/pipeline.rs:24:18
[INFO] [stdout]    |
[INFO] [stdout] 24 | let mut ls_cmd = ChildBuilder::new("ls");
[INFO] [stdout]    |                  ^^^^^^^^^^^^ use of undeclared type `ChildBuilder`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `ChildBuilder` in this scope
[INFO] [stdout]   --> src/pipeline.rs:26:23
[INFO] [stdout]    |
[INFO] [stdout] 26 |    let mut sort_cmd = ChildBuilder::new("sort");
[INFO] [stdout]    |                       ^^^^^^^^^^^^ use of undeclared type `ChildBuilder`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `ChildBuilder` in this scope
[INFO] [stdout]   --> src/pipeline.rs:28:21
[INFO] [stdout]    |
[INFO] [stdout] 28 |    let mut tr_cmd = ChildBuilder::new("tr");
[INFO] [stdout]    |                     ^^^^^^^^^^^^ use of undeclared type `ChildBuilder`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `SimplePipelineBuilder` in this scope
[INFO] [stdout]   --> src/pipeline.rs:32:23
[INFO] [stdout]    |
[INFO] [stdout] 32 |    let mut pipeline = SimplePipelineBuilder::new();
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^ use of undeclared type `SimplePipelineBuilder`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/creche.rs - creche::ChildHandle (line 281) stdout ----
[INFO] [stdout] error[E0425]: cannot find function `spawn` in this scope
[INFO] [stdout]    --> src/creche.rs:292:1
[INFO] [stdout]     |
[INFO] [stdout] 292 | spawn( move || {
[INFO] [stdout]     | ^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]     |
[INFO] [stdout] 281 + use std::thread::spawn;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `sleep` in this scope
[INFO] [stdout]    --> src/creche.rs:293:5
[INFO] [stdout]     |
[INFO] [stdout] 293 |     sleep(Duration::from_secs(2));
[INFO] [stdout]     |     ^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]     |
[INFO] [stdout] 281 + use std::thread::sleep;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Duration` in this scope
[INFO] [stdout]    --> src/creche.rs:293:11
[INFO] [stdout]     |
[INFO] [stdout] 293 |     sleep(Duration::from_secs(2));
[INFO] [stdout]     |           ^^^^^^^^ use of undeclared type `Duration`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 281 + use std::time::Duration;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `ChildBuilder` in this scope
[INFO] [stdout]    --> src/creche.rs:283:15
[INFO] [stdout]     |
[INFO] [stdout] 283 | let mut cmd = ChildBuilder::new("sleep");
[INFO] [stdout]     |               ^^^^^^^^^^^^ use of undeclared type `ChildBuilder`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/ioconfig.rs - ioconfig::interprocess_pipe (line 172) stdout ----
[INFO] [stdout] error[E0433]: cannot find module or crate `ioconfig` in this scope
[INFO] [stdout]    --> src/ioconfig.rs:175:22
[INFO] [stdout]     |
[INFO] [stdout] 175 | let (mut r, mut w) = ioconfig::interprocess_pipe(0, 1);
[INFO] [stdout]     |                      ^^^^^^^^ use of unresolved module or unlinked crate `ioconfig`
[INFO] [stdout]     |
[INFO] [stdout] help: to make use of source file src/ioconfig.rs, use `mod ioconfig` in this file to declare the module
[INFO] [stdout]     |
[INFO] [stdout] 172 + mod ioconfig;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `ChildBuilder` in this scope
[INFO] [stdout]    --> src/ioconfig.rs:178:18
[INFO] [stdout]     |
[INFO] [stdout] 178 | let mut tr_cmd = ChildBuilder::new("tr");
[INFO] [stdout]     |                  ^^^^^^^^^^^^ use of undeclared type `ChildBuilder`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `ChildBuilder` in this scope
[INFO] [stdout]    --> src/ioconfig.rs:181:20
[INFO] [stdout]     |
[INFO] [stdout] 181 | let mut sort_cmd = ChildBuilder::new("sort");
[INFO] [stdout]     |                    ^^^^^^^^^^^^ use of undeclared type `ChildBuilder`
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: cannot write into `File`
[INFO] [stdout]    --> src/ioconfig.rs:194:14
[INFO] [stdout]     |
[INFO] [stdout] 194 |     writeln!(f, "{}", line);
[INFO] [stdout]     |              ^
[INFO] [stdout]     |
[INFO] [stdout]    --> /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/io/mod.rs:1973:7
[INFO] [stdout]     |
[INFO] [stdout]     = note: the method is available for `File` here
[INFO] [stdout] note: must implement `io::Write`, `fmt::Write`, or have a `write_fmt` method
[INFO] [stdout]    --> src/ioconfig.rs:194:14
[INFO] [stdout]     |
[INFO] [stdout] 194 |     writeln!(f, "{}", line);
[INFO] [stdout]     |              ^
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `Write` which provides `write_fmt` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 172 + use std::io::Write;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0599.
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/ioconfig.rs - ioconfig::RedirectToFd (line 271) stdout ----
[INFO] [stdout] error[E0433]: cannot find module or crate `ioconfig` in this scope
[INFO] [stdout]    --> src/ioconfig.rs:278:22
[INFO] [stdout]     |
[INFO] [stdout] 278 | let file_io_config = ioconfig::RedirectToFd::new(file, 0);
[INFO] [stdout]     |                      ^^^^^^^^ use of unresolved module or unlinked crate `ioconfig`
[INFO] [stdout]     |
[INFO] [stdout] help: to make use of source file src/ioconfig.rs, use `mod ioconfig` in this file to declare the module
[INFO] [stdout]     |
[INFO] [stdout] 271 + mod ioconfig;
[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/ioconfig.rs:275:34
[INFO] [stdout]     |
[INFO] [stdout] 271 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_ioconfig_rs_271_0() {
[INFO] [stdout]     |                                      ---------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 275 | let file = f_opts.open("logfile")?;
[INFO] [stdout]     |                                  ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]     |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]     |
[INFO] [stdout] 271 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_ioconfig_rs_271_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 272 | // set up the file to read from
[INFO] [stdout] ...
[INFO] [stdout] 282 | println!("{:?}", child.wait());
[INFO] [stdout] 283 +     Ok(())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `ChildBuilder` in this scope
[INFO] [stdout]    --> src/ioconfig.rs:277:15
[INFO] [stdout]     |
[INFO] [stdout] 277 | let mut cmd = ChildBuilder::new("cat");
[INFO] [stdout]     |               ^^^^^^^^^^^^ use of undeclared type `ChildBuilder`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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/envconfig.rs - envconfig::EnvironmentBuilder (line 77) stdout ----
[INFO] [stdout] error[E0433]: cannot find module or crate `envconfig` in this scope
[INFO] [stdout]   --> src/envconfig.rs:79:15
[INFO] [stdout]    |
[INFO] [stdout] 79 | let mut env = envconfig::EnvironmentBuilder::new();
[INFO] [stdout]    |               ^^^^^^^^^ use of unresolved module or unlinked crate `envconfig`
[INFO] [stdout]    |
[INFO] [stdout] help: to make use of source file src/envconfig.rs, use `mod envconfig` in this file to declare the module
[INFO] [stdout]    |
[INFO] [stdout] 77 + mod envconfig;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `ChildBuilder` in this scope
[INFO] [stdout]   --> src/envconfig.rs:83:15
[INFO] [stdout]    |
[INFO] [stdout] 83 | let mut cmd = ChildBuilder::new("env");
[INFO] [stdout]    |               ^^^^^^^^^^^^ use of undeclared type `ChildBuilder`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/creche.rs - creche::ChildBuilder (line 21)
[INFO] [stdout]     src/creche.rs - creche::ChildBuilder (line 35)
[INFO] [stdout]     src/creche.rs - creche::ChildHandle (line 281)
[INFO] [stdout]     src/envconfig.rs - envconfig::EnvironmentBuilder (line 77)
[INFO] [stdout]     src/ioconfig.rs - ioconfig::RedirectToFd (line 254)
[INFO] [stdout]     src/ioconfig.rs - ioconfig::RedirectToFd (line 271)
[INFO] [stdout]     src/ioconfig.rs - ioconfig::interprocess_pipe (line 172)
[INFO] [stdout]     src/pipeline.rs - pipeline::SimplePipelineBuilder (line 23)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 8 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.47s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ab134886a235b7cdc3a47a1864b5f4ac2b43ce9252ecb907d6c92333b75dba3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab134886a235b7cdc3a47a1864b5f4ac2b43ce9252ecb907d6c92333b75dba3d", kill_on_drop: false }`
[INFO] [stdout] ab134886a235b7cdc3a47a1864b5f4ac2b43ce9252ecb907d6c92333b75dba3d
