[INFO] cloning repository https://github.com/artronics/ws2can
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/artronics/ws2can" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fartronics%2Fws2can", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fartronics%2Fws2can'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a77020be23bc6d8a79826762e455cb27f93631fe
[INFO] testing artronics/ws2can against beta-2025-09-21 for beta-1.91-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fartronics%2Fws2can" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/artronics/ws2can
[INFO] finished tweaking git repo https://github.com/artronics/ws2can
[INFO] tweaked toml for git repo https://github.com/artronics/ws2can written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/artronics/ws2can on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/artronics/ws2can 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: dependencies.serde.featuers
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ee659c74162b8cdf1cb44a27d250dcb918e453450eaf3bbd7656712f6134f70
[INFO] running `Command { std: "docker" "start" "-a" "8ee659c74162b8cdf1cb44a27d250dcb918e453450eaf3bbd7656712f6134f70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ee659c74162b8cdf1cb44a27d250dcb918e453450eaf3bbd7656712f6134f70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ee659c74162b8cdf1cb44a27d250dcb918e453450eaf3bbd7656712f6134f70", kill_on_drop: false }`
[INFO] [stdout] 8ee659c74162b8cdf1cb44a27d250dcb918e453450eaf3bbd7656712f6134f70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fdeab137cf2d0f35537e008afd0f01ea203daeeede7184779c79ff3c6227996b
[INFO] running `Command { std: "docker" "start" "-a" "fdeab137cf2d0f35537e008afd0f01ea203daeeede7184779c79ff3c6227996b", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: dependencies.serde.featuers
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]    Compiling syn v1.0.63
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling pin-project-lite v0.2.6
[INFO] [stderr]    Compiling futures-sink v0.3.13
[INFO] [stderr]    Compiling futures-core v0.3.13
[INFO] [stderr]    Compiling tinyvec v1.1.1
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling futures-task v0.3.13
[INFO] [stderr]    Compiling futures-io v0.3.13
[INFO] [stderr]    Compiling tokio v1.3.0
[INFO] [stderr]    Compiling lock_api v0.4.2
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling httparse v1.3.5
[INFO] [stderr]    Compiling cpuid-bool v0.1.2
[INFO] [stderr]    Compiling bitflags v0.4.0
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]    Compiling once_cell v1.7.2
[INFO] [stderr]    Compiling http v0.2.3
[INFO] [stderr]    Compiling input_buffer v0.4.0
[INFO] [stderr]    Compiling futures-channel v0.3.13
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling serde_derive v1.0.124
[INFO] [stderr]    Compiling itertools v0.4.19
[INFO] [stderr]    Compiling try_from v0.2.2
[INFO] [stderr]    Compiling utf-8 v0.7.5
[INFO] [stderr]    Compiling hex v0.2.0
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling sha-1 v0.9.4
[INFO] [stderr]    Compiling regex v1.4.4
[INFO] [stderr]    Compiling unicode-normalization v0.1.17
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling signal-hook-registry v1.3.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling mio v0.7.9
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling idna v0.2.2
[INFO] [stderr]    Compiling env_logger v0.8.3
[INFO] [stderr]    Compiling socketcan v1.7.0
[INFO] [stderr]    Compiling url v2.2.1
[INFO] [stderr]    Compiling futures-macro v0.3.13
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.5
[INFO] [stderr]    Compiling thiserror v1.0.24
[INFO] [stderr]    Compiling tungstenite v0.13.0
[INFO] [stderr]    Compiling futures-util v0.3.13
[INFO] [stderr]    Compiling pin-project v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling futures-executor v0.3.13
[INFO] [stderr]    Compiling futures v0.3.13
[INFO] [stderr]    Compiling tokio-tungstenite v0.14.0
[INFO] [stderr]    Compiling tokio-socketcan v0.3.0
[INFO] [stderr]    Compiling ws2can v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 |         panic!(print_usage());
[INFO] [stdout]    |                ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{:?}" format string to use the `Debug` implementation of `()`
[INFO] [stdout]    |
[INFO] [stdout] 11 |         panic!("{:?}", print_usage());
[INFO] [stdout]    |                +++++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 11 -         panic!(print_usage());
[INFO] [stdout] 11 +         std::panic::panic_any(print_usage());
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.58s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: bitflags v0.4.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "fdeab137cf2d0f35537e008afd0f01ea203daeeede7184779c79ff3c6227996b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdeab137cf2d0f35537e008afd0f01ea203daeeede7184779c79ff3c6227996b", kill_on_drop: false }`
[INFO] [stdout] fdeab137cf2d0f35537e008afd0f01ea203daeeede7184779c79ff3c6227996b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 673a18532c4cf8097724ef356ee7bef02fd85f0757699e9b3f290c24c4a1d4c8
[INFO] running `Command { std: "docker" "start" "-a" "673a18532c4cf8097724ef356ee7bef02fd85f0757699e9b3f290c24c4a1d4c8", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: dependencies.serde.featuers
[INFO] [stderr]    Compiling ws2can v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 |         panic!(print_usage());
[INFO] [stdout]    |                ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{:?}" format string to use the `Debug` implementation of `()`
[INFO] [stdout]    |
[INFO] [stdout] 11 |         panic!("{:?}", print_usage());
[INFO] [stdout]    |                +++++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 11 -         panic!(print_usage());
[INFO] [stdout] 11 +         std::panic::panic_any(print_usage());
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.24s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: bitflags v0.4.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "673a18532c4cf8097724ef356ee7bef02fd85f0757699e9b3f290c24c4a1d4c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "673a18532c4cf8097724ef356ee7bef02fd85f0757699e9b3f290c24c4a1d4c8", kill_on_drop: false }`
[INFO] [stdout] 673a18532c4cf8097724ef356ee7bef02fd85f0757699e9b3f290c24c4a1d4c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b5b2b18b72a02f46e157768f6d6b74461821122f9a7b0c690ca5ef4a52400da2
[INFO] running `Command { std: "docker" "start" "-a" "b5b2b18b72a02f46e157768f6d6b74461821122f9a7b0c690ca5ef4a52400da2", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: dependencies.serde.featuers
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]   --> src/main.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 |         panic!(print_usage());
[INFO] [stderr]    |                ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]    = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stderr] help: add a "{:?}" format string to use the `Debug` implementation of `()`
[INFO] [stderr]    |
[INFO] [stderr] 11 |         panic!("{:?}", print_usage());
[INFO] [stderr]    |                +++++++
[INFO] [stderr] help: or use std::panic::panic_any instead
[INFO] [stderr]    |
[INFO] [stderr] 11 -         panic!(print_usage());
[INFO] [stderr] 11 +         std::panic::panic_any(print_usage());
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `ws2can` (bin "ws2can" test) generated 1 warning (run `cargo fix --bin "ws2can" --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: bitflags v0.4.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ws2can-64f86f3cf0c2e8ad)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test can::tests::deserialize_can_frame ... ok
[INFO] [stdout] test can::tests::serialize_can_frame ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/ws2can-248ed504a1a448f9)
[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 ws2can
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - run (line 119) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - run (line 119) stdout ----
[INFO] [stdout] error[E0425]: cannot find value `in_tx` in this scope
[INFO] [stdout]  --> src/lib.rs:120:2
[INFO] [stdout]   |
[INFO] [stdout] 3 | (in_tx   ,   in_rx )      = sync::mpsc::channel();
[INFO] [stdout]   |  ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `in_rx` in this scope
[INFO] [stdout]  --> src/lib.rs:120:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | (in_tx   ,   in_rx )      = sync::mpsc::channel();
[INFO] [stdout]   |              ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `sync`
[INFO] [stdout]  --> src/lib.rs:120:29
[INFO] [stdout]   |
[INFO] [stdout] 3 | (in_tx   ,   in_rx )      = sync::mpsc::channel();
[INFO] [stdout]   |                             ^^^^ use of unresolved module or unlinked crate `sync`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `sync`, use `cargo add sync` to add it to your `Cargo.toml`
[INFO] [stdout] help: consider importing one of these modules
[INFO] [stdout]   |
[INFO] [stdout] 2 + use std::sync::mpsc;
[INFO] [stdout]   |
[INFO] [stdout] 2 + use futures_channel::mpsc;
[INFO] [stdout]   |
[INFO] [stdout] 2 + use tokio::sync::mpsc;
[INFO] [stdout]   |
[INFO] [stdout] help: if you import `mpsc`, refer to it directly
[INFO] [stdout]   |
[INFO] [stdout] 3 - (in_tx   ,   in_rx )      = sync::mpsc::channel();
[INFO] [stdout] 3 + (in_tx   ,   in_rx )      = mpsc::channel();
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `out_tx` in this scope
[INFO] [stdout]  --> src/lib.rs:121:3
[INFO] [stdout]   |
[INFO] [stdout] 4 |  (out_tx  ,   out_rx)      = sync::mpsc::channel();
[INFO] [stdout]   |   ^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `out_rx` in this scope
[INFO] [stdout]  --> src/lib.rs:121:15
[INFO] [stdout]   |
[INFO] [stdout] 4 |  (out_tx  ,   out_rx)      = sync::mpsc::channel();
[INFO] [stdout]   |               ^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `sync`
[INFO] [stdout]  --> src/lib.rs:121:30
[INFO] [stdout]   |
[INFO] [stdout] 4 |  (out_tx  ,   out_rx)      = sync::mpsc::channel();
[INFO] [stdout]   |                              ^^^^ use of unresolved module or unlinked crate `sync`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `sync`, use `cargo add sync` to add it to your `Cargo.toml`
[INFO] [stdout] help: consider importing one of these modules
[INFO] [stdout]   |
[INFO] [stdout] 2 + use std::sync::mpsc;
[INFO] [stdout]   |
[INFO] [stdout] 2 + use futures_channel::mpsc;
[INFO] [stdout]   |
[INFO] [stdout] 2 + use tokio::sync::mpsc;
[INFO] [stdout]   |
[INFO] [stdout] help: if you import `mpsc`, refer to it directly
[INFO] [stdout]   |
[INFO] [stdout] 4 -  (out_tx  ,   out_rx)      = sync::mpsc::channel();
[INFO] [stdout] 4 +  (out_tx  ,   out_rx)      = mpsc::channel();
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 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] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - run (line 119)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.15s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "b5b2b18b72a02f46e157768f6d6b74461821122f9a7b0c690ca5ef4a52400da2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5b2b18b72a02f46e157768f6d6b74461821122f9a7b0c690ca5ef4a52400da2", kill_on_drop: false }`
[INFO] [stdout] b5b2b18b72a02f46e157768f6d6b74461821122f9a7b0c690ca5ef4a52400da2
