[INFO] fetching crate async-thread 0.1.2...
[INFO] testing async-thread-0.1.2 against 1.83.0 for beta-1.84.0-4-retry
[INFO] extracting crate async-thread 0.1.2 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate async-thread 0.1.2 on toolchain 1.83.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.83.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-thread 0.1.2
[INFO] finished tweaking crates.io crate async-thread 0.1.2
[INFO] tweaked toml for crates.io crate async-thread 0.1.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.83.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 67 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.83.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 592f27a698ab8981d0353f43986c4dfbf9295d5c970f7dcf6889201ef146f9d7
[INFO] running `Command { std: "docker" "start" "-a" "592f27a698ab8981d0353f43986c4dfbf9295d5c970f7dcf6889201ef146f9d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "592f27a698ab8981d0353f43986c4dfbf9295d5c970f7dcf6889201ef146f9d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "592f27a698ab8981d0353f43986c4dfbf9295d5c970f7dcf6889201ef146f9d7", kill_on_drop: false }`
[INFO] [stdout] 592f27a698ab8981d0353f43986c4dfbf9295d5c970f7dcf6889201ef146f9d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2584aaef6ac1a375d939ea05d67f7eaf1c04d3312d0891b03dfeb83fbf61223
[INFO] running `Command { std: "docker" "start" "-a" "e2584aaef6ac1a375d939ea05d67f7eaf1c04d3312d0891b03dfeb83fbf61223", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling async-thread v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "e2584aaef6ac1a375d939ea05d67f7eaf1c04d3312d0891b03dfeb83fbf61223", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2584aaef6ac1a375d939ea05d67f7eaf1c04d3312d0891b03dfeb83fbf61223", kill_on_drop: false }`
[INFO] [stdout] e2584aaef6ac1a375d939ea05d67f7eaf1c04d3312d0891b03dfeb83fbf61223
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 49a26b1d3076581a76951a3a1ab7b89dd1a3c61cd1dd7276eb5a1a5e9e64949b
[INFO] running `Command { std: "docker" "start" "-a" "49a26b1d3076581a76951a3a1ab7b89dd1a3c61cd1dd7276eb5a1a5e9e64949b", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling pin-project-lite v0.2.15
[INFO] [stderr]    Compiling parking v2.2.1
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling fastrand v2.3.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling rustix v0.38.42
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling tracing-core v0.1.33
[INFO] [stderr]    Compiling bitflags v2.6.0
[INFO] [stderr]    Compiling linux-raw-sys v0.4.14
[INFO] [stderr]    Compiling async-task v4.7.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling atomic-waker v1.1.2
[INFO] [stderr]    Compiling value-bag v1.10.0
[INFO] [stderr]    Compiling once_cell v1.20.2
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling futures-lite v2.5.0
[INFO] [stderr]    Compiling piper v0.2.4
[INFO] [stderr]    Compiling event-listener v2.5.3
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling event-listener v5.3.1
[INFO] [stderr]    Compiling async-channel v1.9.0
[INFO] [stderr]    Compiling async-executor v1.13.1
[INFO] [stderr]    Compiling event-listener-strategy v0.5.3
[INFO] [stderr]    Compiling async-channel v2.3.1
[INFO] [stderr]    Compiling async-lock v3.4.0
[INFO] [stderr]    Compiling blocking v1.6.1
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]    Compiling polling v3.7.4
[INFO] [stderr]    Compiling async-io v2.4.0
[INFO] [stderr]    Compiling async-global-executor v2.4.1
[INFO] [stderr]    Compiling async-std v1.13.0
[INFO] [stderr]    Compiling async-thread v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 18.22s
[INFO] running `Command { std: "docker" "inspect" "49a26b1d3076581a76951a3a1ab7b89dd1a3c61cd1dd7276eb5a1a5e9e64949b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49a26b1d3076581a76951a3a1ab7b89dd1a3c61cd1dd7276eb5a1a5e9e64949b", kill_on_drop: false }`
[INFO] [stdout] 49a26b1d3076581a76951a3a1ab7b89dd1a3c61cd1dd7276eb5a1a5e9e64949b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7545f8d7b65a089ad62bd65310fd2c224979c770fb7eee9ab4f6faa420fe4d6f
[INFO] running `Command { std: "docker" "start" "-a" "7545f8d7b65a089ad62bd65310fd2c224979c770fb7eee9ab4f6faa420fe4d6f", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/async_thread-8abe26400d50f120)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests async_thread
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test src/lib.rs - spawn (line 362) ... FAILED
[INFO] [stdout] test src/lib.rs - Builder::spawn (line 256) ... FAILED
[INFO] [stdout] test src/lib.rs - Builder::name (line 199) ... FAILED
[INFO] [stdout] test src/lib.rs - spawn (line 340) ... FAILED
[INFO] [stdout] test src/lib.rs - spawn (line 326) ... FAILED
[INFO] [stdout] test src/lib.rs - JoinHandle (line 48) - compile ... FAILED
[INFO] [stdout] test src/lib.rs - (line 3) ... FAILED
[INFO] [stdout] test src/lib.rs - JoinHandle<T>::join (line 92) ... FAILED
[INFO] [stdout] test src/lib.rs - Builder::new (line 172) ... FAILED
[INFO] [stdout] test src/lib.rs - JoinHandle<T>::thread (line 113) ... ok
[INFO] [stdout] test src/lib.rs - Builder::stack_size (line 225) ... ok
[INFO] [stdout] test src/lib.rs - Builder (line 150) ... ok
[INFO] [stdout] test src/lib.rs - JoinHandle (line 30) ... ok
[INFO] [stdout] test src/lib.rs - JoinHandle (line 38) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - spawn (line 362) stdout ----
[INFO] [stdout] error[E0728]: `await` is only allowed inside `async` functions and blocks
[INFO] [stdout]   --> src/lib.rs:369:33
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_362_0() {
[INFO] [stdout]    |                                      ----------------------------------- this is not `async`
[INFO] [stdout] ...
[INFO] [stdout] 10 | let result = computation.join().await.unwrap();
[INFO] [stdout]    |                                 ^^^^^ only allowed inside `async` functions and blocks
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0728`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - Builder::spawn (line 256) stdout ----
[INFO] [stdout] error[E0728]: `await` is only allowed inside `async` functions and blocks
[INFO] [stdout]   --> src/lib.rs:264:16
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_256_0() {
[INFO] [stdout]    |                                      ----------------------------------- this is not `async`
[INFO] [stdout] ...
[INFO] [stdout] 11 | handler.join().await.unwrap();
[INFO] [stdout]    |                ^^^^^ only allowed inside `async` functions and blocks
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0728`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - Builder::name (line 199) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `thread`
[INFO] [stdout]  --> src/lib.rs:205:16
[INFO] [stdout]   |
[INFO] [stdout] 9 |     assert_eq!(thread::current().name(), Some("foo"))
[INFO] [stdout]   |                ^^^^^^ use of undeclared crate or module `thread`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]   |
[INFO] [stdout] 2 + use std::thread;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0728]: `await` is only allowed inside `async` functions and blocks
[INFO] [stdout]   --> src/lib.rs:208:16
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_199_0() {
[INFO] [stdout]    |                                      ----------------------------------- this is not `async`
[INFO] [stdout] ...
[INFO] [stdout] 12 | handler.join().await.unwrap();
[INFO] [stdout]    |                ^^^^^ only allowed inside `async` functions and blocks
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0728.
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - spawn (line 340) stdout ----
[INFO] [stdout] error[E0728]: `await` is only allowed inside `async` functions and blocks
[INFO] [stdout]   --> src/lib.rs:356:15
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_340_0() {
[INFO] [stdout]    |                                      ----------------------------------- this is not `async`
[INFO] [stdout] ...
[INFO] [stdout] 19 | sender.join().await.expect("The sender thread has panicked");
[INFO] [stdout]    |               ^^^^^ only allowed inside `async` functions and blocks
[INFO] [stdout] 
[INFO] [stdout] error[E0728]: `await` is only allowed inside `async` functions and blocks
[INFO] [stdout]   --> src/lib.rs:357:17
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_340_0() {
[INFO] [stdout]    |                                      ----------------------------------- this is not `async`
[INFO] [stdout] ...
[INFO] [stdout] 20 | receiver.join().await.expect("The receiver thread has panicked");
[INFO] [stdout]    |                 ^^^^^ only allowed inside `async` functions and blocks
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0728`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - spawn (line 326) stdout ----
[INFO] [stdout] error[E0728]: `await` is only allowed inside `async` functions and blocks
[INFO] [stdout]  --> src/lib.rs:332:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_326_0() {
[INFO] [stdout]   |                                      ----------------------------------- this is not `async`
[INFO] [stdout] ...
[INFO] [stdout] 9 | handler.join().await.unwrap();
[INFO] [stdout]   |                ^^^^^ only allowed inside `async` functions and blocks
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0728`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - JoinHandle (line 48) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `thread`
[INFO] [stdout]   --> src/lib.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |         thread::sleep(Duration::from_millis(10));
[INFO] [stdout]    |         ^^^^^^ use of undeclared crate or module `thread`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]    |
[INFO] [stdout] 2  + use std::thread;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `thread`
[INFO] [stdout]   --> src/lib.rs:67:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | thread::sleep(Duration::from_millis(1000));
[INFO] [stdout]    | ^^^^^^ use of undeclared crate or module `thread`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]    |
[INFO] [stdout] 2  + use std::thread;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0728]: `await` is only allowed inside `async` functions and blocks
[INFO] [stdout]   --> src/lib.rs:61:24
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_48_0() {
[INFO] [stdout]    |                                      ---------------------------------- this is not `async`
[INFO] [stdout] ...
[INFO] [stdout] 16 | original_thread.join().await.expect("The thread being joined has panicked");
[INFO] [stdout]    |                        ^^^^^ only allowed inside `async` functions and blocks
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0728.
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 3) stdout ----
[INFO] [stdout] error[E0425]: cannot find function `spawn` in the crate root
[INFO] [stdout]  --> src/lib.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | let handle = crate::spawn(|| 5usize);
[INFO] [stdout]   |                     ^^^^^ not found in the crate root
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing one of these functions
[INFO] [stdout]   |
[INFO] [stdout] 2 + use std::thread::spawn;
[INFO] [stdout]   |
[INFO] [stdout] 2 + use async_std::task::spawn;
[INFO] [stdout]   |
[INFO] [stdout] 2 + use async_thread::spawn;
[INFO] [stdout]   |
[INFO] [stdout] help: if you import `spawn`, refer to it directly
[INFO] [stdout]   |
[INFO] [stdout] 3 - let handle = crate::spawn(|| 5usize);
[INFO] [stdout] 3 + let handle = spawn(|| 5usize);
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0728]: `await` is only allowed inside `async` functions and blocks
[INFO] [stdout]  --> src/lib.rs:5:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_3_0() {
[INFO] [stdout]   |                                      --------------------------------- this is not `async`
[INFO] [stdout] 3 | let handle = crate::spawn(|| 5usize);
[INFO] [stdout] 4 | assert_eq!(handle.join().await.map_err(drop), Ok(5));
[INFO] [stdout]   |                          ^^^^^ only allowed inside `async` functions and blocks
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0728.
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - JoinHandle<T>::join (line 92) stdout ----
[INFO] [stdout] error[E0728]: `await` is only allowed inside `async` functions and blocks
[INFO] [stdout]   --> src/lib.rs:99:20
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_92_0() {
[INFO] [stdout]    |                                      ---------------------------------- this is not `async`
[INFO] [stdout] ...
[INFO] [stdout] 10 | join_handle.join().await.expect("Couldn't join on the associated thread");
[INFO] [stdout]    |                    ^^^^^ only allowed inside `async` functions and blocks
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0728`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - Builder::new (line 172) stdout ----
[INFO] [stdout] error[E0728]: `await` is only allowed inside `async` functions and blocks
[INFO] [stdout]   --> src/lib.rs:182:16
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_172_0() {
[INFO] [stdout]    |                                      ----------------------------------- this is not `async`
[INFO] [stdout] ...
[INFO] [stdout] 13 | handler.join().await.unwrap();
[INFO] [stdout]    |                ^^^^^ only allowed inside `async` functions and blocks
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0728`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 3)
[INFO] [stdout]     src/lib.rs - Builder::name (line 199)
[INFO] [stdout]     src/lib.rs - Builder::new (line 172)
[INFO] [stdout]     src/lib.rs - Builder::spawn (line 256)
[INFO] [stdout]     src/lib.rs - JoinHandle (line 48)
[INFO] [stdout]     src/lib.rs - JoinHandle<T>::join (line 92)
[INFO] [stdout]     src/lib.rs - spawn (line 326)
[INFO] [stdout]     src/lib.rs - spawn (line 340)
[INFO] [stdout]     src/lib.rs - spawn (line 362)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 5 passed; 9 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.89s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "7545f8d7b65a089ad62bd65310fd2c224979c770fb7eee9ab4f6faa420fe4d6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7545f8d7b65a089ad62bd65310fd2c224979c770fb7eee9ab4f6faa420fe4d6f", kill_on_drop: false }`
[INFO] [stdout] 7545f8d7b65a089ad62bd65310fd2c224979c770fb7eee9ab4f6faa420fe4d6f
