[INFO] fetching crate helgoboss-midi 0.4.0...
[INFO] checking helgoboss-midi-0.4.0 against nightly-2024-02-05 for check-cfg-2
[INFO] extracting crate helgoboss-midi 0.4.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate helgoboss-midi 0.4.0 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 helgoboss-midi 0.4.0
[INFO] finished tweaking crates.io crate helgoboss-midi 0.4.0
[INFO] tweaked toml for crates.io crate helgoboss-midi 0.4.0 written to /workspace/builds/worker-3-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 version-sync v0.9.5
[INFO] [stderr]   Downloaded toml v0.7.8
[INFO] [stderr]   Downloaded pulldown-cmark v0.9.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 64224ce0dfd08cd8605c07240c23909b96d205d28726194e265e04bca2ebd3cd
[INFO] running `Command { std: "docker" "start" "-a" "64224ce0dfd08cd8605c07240c23909b96d205d28726194e265e04bca2ebd3cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64224ce0dfd08cd8605c07240c23909b96d205d28726194e265e04bca2ebd3cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64224ce0dfd08cd8605c07240c23909b96d205d28726194e265e04bca2ebd3cd", kill_on_drop: false }`
[INFO] [stdout] 64224ce0dfd08cd8605c07240c23909b96d205d28726194e265e04bca2ebd3cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] bac127dcc504cc812b98fdf7fe84717ac66d2249d4b4ca3abaee4326cb8448d7
[INFO] running `Command { std: "docker" "start" "-a" "bac127dcc504cc812b98fdf7fe84717ac66d2249d4b4ca3abaee4326cb8448d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]     Checking hashbrown v0.14.3
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]     Checking winnow v0.5.39
[INFO] [stderr]     Checking percent-encoding v2.3.1
[INFO] [stderr]    Compiling semver v1.0.21
[INFO] [stderr]    Compiling pulldown-cmark v0.9.6
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]     Checking form_urlencoded v1.2.1
[INFO] [stderr]    Compiling unicase v2.7.0
[INFO] [stderr]     Checking indexmap v2.2.2
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking syn v2.0.48
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]     Checking regex-automata v0.4.5
[INFO] [stderr]     Checking toml_datetime v0.6.5
[INFO] [stderr]     Checking serde_spanned v0.6.5
[INFO] [stderr]     Checking toml_edit v0.19.15
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]    Compiling num_enum_derive v0.5.11
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking num_enum v0.5.11
[INFO] [stderr]     Checking toml v0.7.8
[INFO] [stderr]     Checking version-sync v0.9.5
[INFO] [stderr]     Checking helgoboss-midi v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.31s
[INFO] running `Command { std: "docker" "inspect" "bac127dcc504cc812b98fdf7fe84717ac66d2249d4b4ca3abaee4326cb8448d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bac127dcc504cc812b98fdf7fe84717ac66d2249d4b4ca3abaee4326cb8448d7", kill_on_drop: false }`
[INFO] [stdout] bac127dcc504cc812b98fdf7fe84717ac66d2249d4b4ca3abaee4326cb8448d7
[INFO] checking helgoboss-midi-0.4.0 against nightly-2024-02-05+rustflags=-Dunexpected_cfgs+cargoflags=-Zcheck-cfg for check-cfg-2
[INFO] extracting crate helgoboss-midi 0.4.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate helgoboss-midi 0.4.0 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 helgoboss-midi 0.4.0
[INFO] finished tweaking crates.io crate helgoboss-midi 0.4.0
[INFO] tweaked toml for crates.io crate helgoboss-midi 0.4.0 written to /workspace/builds/worker-3-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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 71b2168d1cb7f14e388969b85dc8ed857339a2ff6098b18ee340ee80b050ae23
[INFO] running `Command { std: "docker" "start" "-a" "71b2168d1cb7f14e388969b85dc8ed857339a2ff6098b18ee340ee80b050ae23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71b2168d1cb7f14e388969b85dc8ed857339a2ff6098b18ee340ee80b050ae23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71b2168d1cb7f14e388969b85dc8ed857339a2ff6098b18ee340ee80b050ae23", kill_on_drop: false }`
[INFO] [stdout] 71b2168d1cb7f14e388969b85dc8ed857339a2ff6098b18ee340ee80b050ae23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 1465aabf61ffbd40a6044e9e159e035ea511200d139e5e8fc434416b83c739f3
[INFO] running `Command { std: "docker" "start" "-a" "1465aabf61ffbd40a6044e9e159e035ea511200d139e5e8fc434416b83c739f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking tinyvec_macros v0.1.1
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]     Checking hashbrown v0.14.3
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking winnow v0.5.39
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]    Compiling semver v1.0.21
[INFO] [stderr]    Compiling pulldown-cmark v0.9.6
[INFO] [stderr]     Checking percent-encoding v2.3.1
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]     Checking form_urlencoded v1.2.1
[INFO] [stderr]    Compiling unicase v2.7.0
[INFO] [stderr]     Checking indexmap v2.2.2
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking syn v2.0.48
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]     Checking regex-automata v0.4.5
[INFO] [stderr]     Checking toml_datetime v0.6.5
[INFO] [stderr]     Checking serde_spanned v0.6.5
[INFO] [stderr]     Checking toml_edit v0.19.15
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]    Compiling num_enum_derive v0.5.11
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking num_enum v0.5.11
[INFO] [stderr]     Checking toml v0.7.8
[INFO] [stderr]     Checking version-sync v0.9.5
[INFO] [stderr]     Checking helgoboss-midi v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: unexpected `cfg` condition value: `no_std`
[INFO] [stdout]   --> src/newtype_macros.rs:61:27
[INFO] [stdout]    |
[INFO] [stdout] 61 |                       #[cfg(feature = "no_std")]
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/channel_mod.rs:3:1
[INFO] [stdout]    |
[INFO] [stdout] 3  | / newtype! {
[INFO] [stdout] 4  | |     #[doc = r"A MIDI channel (0 - 15)."]
[INFO] [stdout] 5  | |     name = Channel, repr = u8, max = 15
[INFO] [stdout] 6  | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `default`, `serde`, `serde_repr`, `std`
[INFO] [stdout]    = help: consider adding `no_std` as a feature in `Cargo.toml`
[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]    = note: this error originates in the macro `newtype` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `no_std`
[INFO] [stdout]   --> src/newtype_macros.rs:61:27
[INFO] [stdout]    |
[INFO] [stdout] 61 |                       #[cfg(feature = "no_std")]
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/key_number_mod.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | / newtype! {
[INFO] [stdout] 3  | |     #[doc = r"A key number (0 - 127), e.g. of a MIDI Note On message."]
[INFO] [stdout] 4  | |     name = KeyNumber, repr = u8, max = 127
[INFO] [stdout] 5  | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `default`, `serde`, `serde_repr`, `std`
[INFO] [stdout]    = help: consider adding `no_std` as a feature in `Cargo.toml`
[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: this error originates in the macro `newtype` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `no_std`
[INFO] [stdout]   --> src/newtype_macros.rs:61:27
[INFO] [stdout]    |
[INFO] [stdout] 61 |                       #[cfg(feature = "no_std")]
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/controller_number_mod.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | / newtype! {
[INFO] [stdout] 3  | |     #[doc = r"A controller number (0 - 127) of a MIDI Control Change message."]
[INFO] [stdout] 4  | |     name = ControllerNumber, repr = u8, max = 127
[INFO] [stdout] 5  | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `default`, `serde`, `serde_repr`, `std`
[INFO] [stdout]    = help: consider adding `no_std` as a feature in `Cargo.toml`
[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: this error originates in the macro `newtype` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `no_std`
[INFO] [stdout]   --> src/newtype_macros.rs:61:27
[INFO] [stdout]    |
[INFO] [stdout] 61 |                       #[cfg(feature = "no_std")]
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/u4_mod.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | / newtype! {
[INFO] [stdout] 3  | |     #[doc = r"A 4-bit integer (0 - 15)."]
[INFO] [stdout] 4  | |     name = U4, repr = u8, max = 15
[INFO] [stdout] 5  | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `default`, `serde`, `serde_repr`, `std`
[INFO] [stdout]    = help: consider adding `no_std` as a feature in `Cargo.toml`
[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: this error originates in the macro `newtype` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `no_std`
[INFO] [stdout]   --> src/newtype_macros.rs:61:27
[INFO] [stdout]    |
[INFO] [stdout] 61 |                       #[cfg(feature = "no_std")]
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/u7_mod.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | / newtype! {
[INFO] [stdout] 3  | |     #[doc = r"A 7-bit integer (0 - 127)."]
[INFO] [stdout] 4  | |     name = U7, repr = u8, max = 127
[INFO] [stdout] 5  | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `default`, `serde`, `serde_repr`, `std`
[INFO] [stdout]    = help: consider adding `no_std` as a feature in `Cargo.toml`
[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: this error originates in the macro `newtype` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `no_std`
[INFO] [stdout]   --> src/newtype_macros.rs:61:27
[INFO] [stdout]    |
[INFO] [stdout] 61 |                       #[cfg(feature = "no_std")]
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/u14_mod.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | / newtype! {
[INFO] [stdout] 3  | |     #[doc = r"A 14-bit integer (0 - 16383)."]
[INFO] [stdout] 4  | |     name = U14, repr = u16, max = 16383
[INFO] [stdout] 5  | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `default`, `serde`, `serde_repr`, `std`
[INFO] [stdout]    = help: consider adding `no_std` as a feature in `Cargo.toml`
[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: this error originates in the macro `newtype` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `no_std`
[INFO] [stdout]   --> src/newtype_macros.rs:61:27
[INFO] [stdout]    |
[INFO] [stdout] 61 |                       #[cfg(feature = "no_std")]
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/channel_mod.rs:3:1
[INFO] [stdout]    |
[INFO] [stdout] 3  | / newtype! {
[INFO] [stdout] 4  | |     #[doc = r"A MIDI channel (0 - 15)."]
[INFO] [stdout] 5  | |     name = Channel, repr = u8, max = 15
[INFO] [stdout] 6  | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `default`, `serde`, `serde_repr`, `std`
[INFO] [stdout]    = help: consider adding `no_std` as a feature in `Cargo.toml`
[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]    = note: this error originates in the macro `newtype` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `no_std`
[INFO] [stdout]   --> src/newtype_macros.rs:61:27
[INFO] [stdout]    |
[INFO] [stdout] 61 |                       #[cfg(feature = "no_std")]
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/key_number_mod.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | / newtype! {
[INFO] [stdout] 3  | |     #[doc = r"A key number (0 - 127), e.g. of a MIDI Note On message."]
[INFO] [stdout] 4  | |     name = KeyNumber, repr = u8, max = 127
[INFO] [stdout] 5  | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `default`, `serde`, `serde_repr`, `std`
[INFO] [stdout]    = help: consider adding `no_std` as a feature in `Cargo.toml`
[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: this error originates in the macro `newtype` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `no_std`
[INFO] [stdout]   --> src/newtype_macros.rs:61:27
[INFO] [stdout]    |
[INFO] [stdout] 61 |                       #[cfg(feature = "no_std")]
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/controller_number_mod.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | / newtype! {
[INFO] [stdout] 3  | |     #[doc = r"A controller number (0 - 127) of a MIDI Control Change message."]
[INFO] [stdout] 4  | |     name = ControllerNumber, repr = u8, max = 127
[INFO] [stdout] 5  | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `default`, `serde`, `serde_repr`, `std`
[INFO] [stdout]    = help: consider adding `no_std` as a feature in `Cargo.toml`
[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: this error originates in the macro `newtype` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `no_std`
[INFO] [stdout]   --> src/newtype_macros.rs:61:27
[INFO] [stdout]    |
[INFO] [stdout] 61 |                       #[cfg(feature = "no_std")]
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/u4_mod.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | / newtype! {
[INFO] [stdout] 3  | |     #[doc = r"A 4-bit integer (0 - 15)."]
[INFO] [stdout] 4  | |     name = U4, repr = u8, max = 15
[INFO] [stdout] 5  | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `default`, `serde`, `serde_repr`, `std`
[INFO] [stdout]    = help: consider adding `no_std` as a feature in `Cargo.toml`
[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: this error originates in the macro `newtype` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `no_std`
[INFO] [stdout]   --> src/newtype_macros.rs:61:27
[INFO] [stdout]    |
[INFO] [stdout] 61 |                       #[cfg(feature = "no_std")]
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/u7_mod.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | / newtype! {
[INFO] [stdout] 3  | |     #[doc = r"A 7-bit integer (0 - 127)."]
[INFO] [stdout] 4  | |     name = U7, repr = u8, max = 127
[INFO] [stdout] 5  | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `default`, `serde`, `serde_repr`, `std`
[INFO] [stdout]    = help: consider adding `no_std` as a feature in `Cargo.toml`
[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: this error originates in the macro `newtype` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `no_std`
[INFO] [stdout]   --> src/newtype_macros.rs:61:27
[INFO] [stdout]    |
[INFO] [stdout] 61 |                       #[cfg(feature = "no_std")]
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/u14_mod.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | / newtype! {
[INFO] [stdout] 3  | |     #[doc = r"A 14-bit integer (0 - 16383)."]
[INFO] [stdout] 4  | |     name = U14, repr = u16, max = 16383
[INFO] [stdout] 5  | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `default`, `serde`, `serde_repr`, `std`
[INFO] [stdout]    = help: consider adding `no_std` as a feature in `Cargo.toml`
[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: this error originates in the macro `newtype` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `helgoboss-midi` (lib) due to 7 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `helgoboss-midi` (lib test) due to 7 previous errors
[INFO] running `Command { std: "docker" "inspect" "1465aabf61ffbd40a6044e9e159e035ea511200d139e5e8fc434416b83c739f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1465aabf61ffbd40a6044e9e159e035ea511200d139e5e8fc434416b83c739f3", kill_on_drop: false }`
[INFO] [stdout] 1465aabf61ffbd40a6044e9e159e035ea511200d139e5e8fc434416b83c739f3
