[INFO] fetching crate mls-rs-core 0.15.0...
[INFO] checking mls-rs-core-0.15.0 against nightly-2024-02-05 for check-cfg-2
[INFO] extracting crate mls-rs-core 0.15.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate mls-rs-core 0.15.0 on toolchain nightly-2024-02-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mls-rs-core 0.15.0
[INFO] finished tweaking crates.io crate mls-rs-core 0.15.0
[INFO] tweaked toml for crates.io crate mls-rs-core 0.15.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded enum-iterator v1.5.0
[INFO] [stderr]   Downloaded zeroize_derive v1.4.2
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ed881a1545ba75808ae789195f570326fc82d71291a96461ee24374a3edaeae
[INFO] running `Command { std: "docker" "start" "-a" "9ed881a1545ba75808ae789195f570326fc82d71291a96461ee24374a3edaeae", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3305c9076c4f61d489d886c368c6507d2c2a1b694f8723356fa2d280d51e62b
[INFO] running `Command { std: "docker" "start" "-a" "a3305c9076c4f61d489d886c368c6507d2c2a1b694f8723356fa2d280d51e62b", kill_on_drop: false }`
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling hashbrown v0.14.3
[INFO] [stderr]    Compiling winnow v0.5.39
[INFO] [stderr]    Compiling toml_datetime v0.6.5
[INFO] [stderr]    Compiling async-trait v0.1.77
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking base64 v0.21.7
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]    Compiling indexmap v2.2.2
[INFO] [stderr]    Compiling toml_edit v0.21.1
[INFO] [stderr]    Compiling proc-macro-crate v3.1.0
[INFO] [stderr]    Compiling darling_core v0.20.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling enum-iterator-derive v1.3.0
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]    Compiling num_enum_derive v0.7.2
[INFO] [stderr]    Compiling maybe-async v0.2.9
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]     Checking enum-iterator v1.5.0
[INFO] [stderr]    Compiling darling_macro v0.20.5
[INFO] [stderr]     Checking num_enum v0.7.2
[INFO] [stderr]     Checking thiserror v1.0.56
[INFO] [stderr]    Compiling darling v0.20.5
[INFO] [stderr]    Compiling mls-rs-codec-derive v0.1.0
[INFO] [stderr]     Checking mls-rs-codec v0.4.0
[INFO] [stderr]     Checking mls-rs-core v0.15.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.55s
[INFO] running `Command { std: "docker" "inspect" "a3305c9076c4f61d489d886c368c6507d2c2a1b694f8723356fa2d280d51e62b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3305c9076c4f61d489d886c368c6507d2c2a1b694f8723356fa2d280d51e62b", kill_on_drop: false }`
[INFO] [stdout] a3305c9076c4f61d489d886c368c6507d2c2a1b694f8723356fa2d280d51e62b
[INFO] checking mls-rs-core-0.15.0 against nightly-2024-02-05+rustflags=-Dunexpected_cfgs+cargoflags=-Zcheck-cfg for check-cfg-2
[INFO] extracting crate mls-rs-core 0.15.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate mls-rs-core 0.15.0 on toolchain nightly-2024-02-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mls-rs-core 0.15.0
[INFO] finished tweaking crates.io crate mls-rs-core 0.15.0
[INFO] tweaked toml for crates.io crate mls-rs-core 0.15.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d251988a86dcd657f4b120e028d85b87ae2c8f1fcbb7418e7949f66d9d40c3e9
[INFO] running `Command { std: "docker" "start" "-a" "d251988a86dcd657f4b120e028d85b87ae2c8f1fcbb7418e7949f66d9d40c3e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d251988a86dcd657f4b120e028d85b87ae2c8f1fcbb7418e7949f66d9d40c3e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d251988a86dcd657f4b120e028d85b87ae2c8f1fcbb7418e7949f66d9d40c3e9", kill_on_drop: false }`
[INFO] [stdout] d251988a86dcd657f4b120e028d85b87ae2c8f1fcbb7418e7949f66d9d40c3e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid -Dunexpected_cfgs" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "check" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zcheck-cfg", kill_on_drop: false }`
[INFO] [stdout] 3e67c42f0c2318a96af412f66c5b11106c5a7c4d49e0e98a66ff4d8ba0c60168
[INFO] running `Command { std: "docker" "start" "-a" "3e67c42f0c2318a96af412f66c5b11106c5a7c4d49e0e98a66ff4d8ba0c60168", kill_on_drop: false }`
[INFO] [stderr]    Compiling hashbrown v0.14.3
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling toml_datetime v0.6.5
[INFO] [stderr]    Compiling winnow v0.5.39
[INFO] [stderr]    Compiling async-trait v0.1.77
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking base64 v0.21.7
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]    Compiling indexmap v2.2.2
[INFO] [stderr]    Compiling toml_edit v0.21.1
[INFO] [stderr]    Compiling proc-macro-crate v3.1.0
[INFO] [stderr]    Compiling darling_core v0.20.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling enum-iterator-derive v1.3.0
[INFO] [stderr]    Compiling num_enum_derive v0.7.2
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]    Compiling maybe-async v0.2.9
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]     Checking enum-iterator v1.5.0
[INFO] [stderr]    Compiling darling_macro v0.20.5
[INFO] [stderr]     Checking thiserror v1.0.56
[INFO] [stderr]     Checking num_enum v0.7.2
[INFO] [stderr]    Compiling darling v0.20.5
[INFO] [stderr]    Compiling mls-rs-codec-derive v0.1.0
[INFO] [stderr]     Checking mls-rs-codec v0.4.0
[INFO] [stderr]     Checking mls-rs-core v0.15.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: unexpected `cfg` condition name: `coverage_nightly`
[INFO] [stdout]  --> src/lib.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![cfg_attr(coverage_nightly, feature(coverage_attribute))]
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
[INFO] [stdout]   = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(coverage_nightly)");` to the top of a `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout]   = note: requested on the command line with `-D unexpected-cfgs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]   --> src/crypto.rs:97:16
[INFO] [stdout]    |
[INFO] [stdout] 97 | #[cfg_attr(not(mls_build_async), maybe_async::must_be_sync)]
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]   --> src/crypto.rs:98:40
[INFO] [stdout]    |
[INFO] [stdout] 98 | #[cfg_attr(all(target_arch = "wasm32", mls_build_async), maybe_async::must_be_async(?Send))]
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]    --> src/crypto.rs:100:38
[INFO] [stdout]     |
[INFO] [stdout] 100 |     all(not(target_arch = "wasm32"), mls_build_async),
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]    --> src/crypto.rs:118:16
[INFO] [stdout]     |
[INFO] [stdout] 118 | #[cfg_attr(not(mls_build_async), maybe_async::must_be_sync)]
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]    --> src/crypto.rs:119:40
[INFO] [stdout]     |
[INFO] [stdout] 119 | #[cfg_attr(all(target_arch = "wasm32", mls_build_async), maybe_async::must_be_async(?Send))]
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]    --> src/crypto.rs:121:38
[INFO] [stdout]     |
[INFO] [stdout] 121 |     all(not(target_arch = "wasm32"), mls_build_async),
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]    --> src/crypto.rs:239:16
[INFO] [stdout]     |
[INFO] [stdout] 239 | #[cfg_attr(not(mls_build_async), maybe_async::must_be_sync)]
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]    --> src/crypto.rs:240:40
[INFO] [stdout]     |
[INFO] [stdout] 240 | #[cfg_attr(all(target_arch = "wasm32", mls_build_async), maybe_async::must_be_async(?Send))]
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]    --> src/crypto.rs:242:38
[INFO] [stdout]     |
[INFO] [stdout] 242 |     all(not(target_arch = "wasm32"), mls_build_async),
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]  --> src/group/group_state.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[cfg(mls_build_async)]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]   --> src/group/group_state.rs:38:16
[INFO] [stdout]    |
[INFO] [stdout] 38 | #[cfg_attr(not(mls_build_async), maybe_async::must_be_sync)]
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]   --> src/group/group_state.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | #[cfg_attr(mls_build_async, maybe_async::must_be_async)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]  --> src/identity/provider.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[cfg(mls_build_async)]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]   --> src/identity/provider.rs:39:16
[INFO] [stdout]    |
[INFO] [stdout] 39 | #[cfg_attr(not(mls_build_async), maybe_async::must_be_sync)]
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]   --> src/identity/provider.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[cfg_attr(mls_build_async, maybe_async::must_be_async)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]  --> src/key_package.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[cfg(mls_build_async)]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]   --> src/key_package.rs:39:16
[INFO] [stdout]    |
[INFO] [stdout] 39 | #[cfg_attr(not(mls_build_async), maybe_async::must_be_sync)]
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]   --> src/key_package.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[cfg_attr(mls_build_async, maybe_async::must_be_async)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]  --> src/psk.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[cfg(mls_build_async)]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]   --> src/psk.rs:92:16
[INFO] [stdout]    |
[INFO] [stdout] 92 | #[cfg_attr(not(mls_build_async), maybe_async::must_be_sync)]
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]   --> src/psk.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 93 | #[cfg_attr(mls_build_async, maybe_async::must_be_async)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `coverage_nightly`
[INFO] [stdout]  --> src/lib.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![cfg_attr(coverage_nightly, feature(coverage_attribute))]
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: expected names are: `debug_assertions`, `doc`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
[INFO] [stdout]   = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(coverage_nightly)");` to the top of a `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout]   = note: requested on the command line with `-D unexpected-cfgs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]   --> src/crypto.rs:97:16
[INFO] [stdout]    |
[INFO] [stdout] 97 | #[cfg_attr(not(mls_build_async), maybe_async::must_be_sync)]
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]   --> src/crypto.rs:98:40
[INFO] [stdout]    |
[INFO] [stdout] 98 | #[cfg_attr(all(target_arch = "wasm32", mls_build_async), maybe_async::must_be_async(?Send))]
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]    --> src/crypto.rs:100:38
[INFO] [stdout]     |
[INFO] [stdout] 100 |     all(not(target_arch = "wasm32"), mls_build_async),
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]    --> src/crypto.rs:118:16
[INFO] [stdout]     |
[INFO] [stdout] 118 | #[cfg_attr(not(mls_build_async), maybe_async::must_be_sync)]
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]    --> src/crypto.rs:119:40
[INFO] [stdout]     |
[INFO] [stdout] 119 | #[cfg_attr(all(target_arch = "wasm32", mls_build_async), maybe_async::must_be_async(?Send))]
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]    --> src/crypto.rs:121:38
[INFO] [stdout]     |
[INFO] [stdout] 121 |     all(not(target_arch = "wasm32"), mls_build_async),
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]    --> src/crypto.rs:239:16
[INFO] [stdout]     |
[INFO] [stdout] 239 | #[cfg_attr(not(mls_build_async), maybe_async::must_be_sync)]
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]    --> src/crypto.rs:240:40
[INFO] [stdout]     |
[INFO] [stdout] 240 | #[cfg_attr(all(target_arch = "wasm32", mls_build_async), maybe_async::must_be_async(?Send))]
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]    --> src/crypto.rs:242:38
[INFO] [stdout]     |
[INFO] [stdout] 242 |     all(not(target_arch = "wasm32"), mls_build_async),
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]  --> src/group/group_state.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[cfg(mls_build_async)]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]   --> src/group/group_state.rs:38:16
[INFO] [stdout]    |
[INFO] [stdout] 38 | #[cfg_attr(not(mls_build_async), maybe_async::must_be_sync)]
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]   --> src/group/group_state.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | #[cfg_attr(mls_build_async, maybe_async::must_be_async)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]  --> src/identity/provider.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[cfg(mls_build_async)]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]   --> src/identity/provider.rs:39:16
[INFO] [stdout]    |
[INFO] [stdout] 39 | #[cfg_attr(not(mls_build_async), maybe_async::must_be_sync)]
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]   --> src/identity/provider.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[cfg_attr(mls_build_async, maybe_async::must_be_async)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]  --> src/key_package.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[cfg(mls_build_async)]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]   --> src/key_package.rs:39:16
[INFO] [stdout]    |
[INFO] [stdout] 39 | #[cfg_attr(not(mls_build_async), maybe_async::must_be_sync)]
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]   --> src/key_package.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[cfg_attr(mls_build_async, maybe_async::must_be_async)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]  --> src/psk.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[cfg(mls_build_async)]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]   --> src/psk.rs:92:16
[INFO] [stdout]    |
[INFO] [stdout] 92 | #[cfg_attr(not(mls_build_async), maybe_async::must_be_sync)]
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `mls_build_async`
[INFO] [stdout]   --> src/psk.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 93 | #[cfg_attr(mls_build_async, maybe_async::must_be_async)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(mls_build_async)");` to the top of a `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 22 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mls-rs-core` (lib) due to 23 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 22 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mls-rs-core` (lib test) due to 23 previous errors
[INFO] running `Command { std: "docker" "inspect" "3e67c42f0c2318a96af412f66c5b11106c5a7c4d49e0e98a66ff4d8ba0c60168", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e67c42f0c2318a96af412f66c5b11106c5a7c4d49e0e98a66ff4d8ba0c60168", kill_on_drop: false }`
[INFO] [stdout] 3e67c42f0c2318a96af412f66c5b11106c5a7c4d49e0e98a66ff4d8ba0c60168
