[INFO] fetching crate custom_attrs 1.6.2...
[INFO] checking custom_attrs-1.6.2 against 1.95.0 for pr-155915
[INFO] extracting crate custom_attrs 1.6.2 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate custom_attrs 1.6.2
[INFO] finished tweaking crates.io crate custom_attrs 1.6.2
[INFO] tweaked toml for crates.io crate custom_attrs 1.6.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate custom_attrs 1.6.2 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate custom_attrs 1.6.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded trybuild v1.0.80
[INFO] [stderr]   Downloaded serde_json v1.0.94
[INFO] [stderr]   Downloaded proc-macro2 v1.0.54
[INFO] [stderr]   Downloaded basic-toml v0.1.2
[INFO] [stderr]   Downloaded serde_derive v1.0.158
[INFO] [stderr]   Downloaded serde v1.0.158
[INFO] [stderr]   Downloaded syn v2.0.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 67cf0b19332fe414d5846229a5d6fd96e841333998840980ae80beb4c3929888
[INFO] running `Command { std: "docker" "start" "-a" "67cf0b19332fe414d5846229a5d6fd96e841333998840980ae80beb4c3929888", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "67cf0b19332fe414d5846229a5d6fd96e841333998840980ae80beb4c3929888", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67cf0b19332fe414d5846229a5d6fd96e841333998840980ae80beb4c3929888", kill_on_drop: false }`
[INFO] [stdout] 67cf0b19332fe414d5846229a5d6fd96e841333998840980ae80beb4c3929888
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d849c2bf35fc06e935839f83da282315a4fa54f684c063fbaf99653edf44ad15
[INFO] running `Command { std: "docker" "start" "-a" "d849c2bf35fc06e935839f83da282315a4fa54f684c063fbaf99653edf44ad15", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.54
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling serde v1.0.158
[INFO] [stderr]    Compiling serde_derive v1.0.158
[INFO] [stderr]    Compiling serde_json v1.0.94
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling trybuild v1.0.80
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking termcolor v1.2.0
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]    Compiling syn v2.0.10
[INFO] [stderr]     Checking basic-toml v0.1.2
[INFO] [stderr]     Checking custom_attrs v1.6.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition name: `help_span`
[INFO] [stdout]    --> src/derive.rs:29:22
[INFO] [stdout]     |
[INFO] [stdout]  29 |               if #[cfg(help_span)] {
[INFO] [stdout]     |                        ^^^^^^^^^ help: found config with similar value: `feature = "help_span"`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/config.rs:114:17
[INFO] [stdout]     |
[INFO] [stdout] 114 | /                 error_duplicate!(
[INFO] [stdout] 115 | |                     attr, "This config is already set." ;
[INFO] [stdout] 116 | |                     str2, "Value for config `{}` is already set here.", path_str.join("::")
[INFO] [stdout] 117 | |                 );
[INFO] [stdout]     | |_________________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(help_span)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(help_span)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `error_duplicate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `help_span`
[INFO] [stdout]    --> src/derive.rs:29:22
[INFO] [stdout]     |
[INFO] [stdout]  29 |               if #[cfg(help_span)] {
[INFO] [stdout]     |                        ^^^^^^^^^ help: found config with similar value: `feature = "help_span"`
[INFO] [stdout] ...
[INFO] [stdout] 272 | /             error_duplicate!(
[INFO] [stdout] 273 | |                 value, "The value is already set for this attribute.";
[INFO] [stdout] 274 | |                 value2.get_span(), "First value of `{}` is set here.", self.ident
[INFO] [stdout] 275 | |             );
[INFO] [stdout]     | |_____________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(help_span)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(help_span)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: this warning originates in the macro `error_duplicate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `help_span`
[INFO] [stdout]    --> src/derive.rs:29:22
[INFO] [stdout]     |
[INFO] [stdout]  29 |               if #[cfg(help_span)] {
[INFO] [stdout]     |                        ^^^^^^^^^ help: found config with similar value: `feature = "help_span"`
[INFO] [stdout] ...
[INFO] [stdout] 369 | /                         error_duplicate!(
[INFO] [stdout] 370 | |                             declaration.ident, "This attribute is already declared.";
[INFO] [stdout] 371 | |                             declaration2.ident, "`{}` is already declared here.", declaration2.ident
[INFO] [stdout] 372 | |                         );
[INFO] [stdout]     | |_________________________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(help_span)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(help_span)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: this warning originates in the macro `error_duplicate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `help_span`
[INFO] [stdout]    --> src/derive.rs:29:22
[INFO] [stdout]     |
[INFO] [stdout]  29 |               if #[cfg(help_span)] {
[INFO] [stdout]     |                        ^^^^^^^^^ help: found config with similar value: `feature = "help_span"`
[INFO] [stdout] ...
[INFO] [stdout] 400 | /             error_duplicate!(
[INFO] [stdout] 401 | |                 lit, "The attribute `{}` already use this function name.", attr2.ident;
[INFO] [stdout] 402 | |                 lit2, "First use of `{}` here.", lit.value()
[INFO] [stdout] 403 | |             );
[INFO] [stdout]     | |_____________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(help_span)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(help_span)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: this warning originates in the macro `error_duplicate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `help_span`
[INFO] [stdout]    --> src/derive.rs:29:22
[INFO] [stdout]     |
[INFO] [stdout]  29 |               if #[cfg(help_span)] {
[INFO] [stdout]     |                        ^^^^^^^^^ help: found config with similar value: `feature = "help_span"`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/config.rs:114:17
[INFO] [stdout]     |
[INFO] [stdout] 114 | /                 error_duplicate!(
[INFO] [stdout] 115 | |                     attr, "This config is already set." ;
[INFO] [stdout] 116 | |                     str2, "Value for config `{}` is already set here.", path_str.join("::")
[INFO] [stdout] 117 | |                 );
[INFO] [stdout]     | |_________________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(help_span)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(help_span)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `error_duplicate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `help_span`
[INFO] [stdout]    --> src/derive.rs:29:22
[INFO] [stdout]     |
[INFO] [stdout]  29 |               if #[cfg(help_span)] {
[INFO] [stdout]     |                        ^^^^^^^^^ help: found config with similar value: `feature = "help_span"`
[INFO] [stdout] ...
[INFO] [stdout] 272 | /             error_duplicate!(
[INFO] [stdout] 273 | |                 value, "The value is already set for this attribute.";
[INFO] [stdout] 274 | |                 value2.get_span(), "First value of `{}` is set here.", self.ident
[INFO] [stdout] 275 | |             );
[INFO] [stdout]     | |_____________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(help_span)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(help_span)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: this warning originates in the macro `error_duplicate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `help_span`
[INFO] [stdout]    --> src/derive.rs:29:22
[INFO] [stdout]     |
[INFO] [stdout]  29 |               if #[cfg(help_span)] {
[INFO] [stdout]     |                        ^^^^^^^^^ help: found config with similar value: `feature = "help_span"`
[INFO] [stdout] ...
[INFO] [stdout] 369 | /                         error_duplicate!(
[INFO] [stdout] 370 | |                             declaration.ident, "This attribute is already declared.";
[INFO] [stdout] 371 | |                             declaration2.ident, "`{}` is already declared here.", declaration2.ident
[INFO] [stdout] 372 | |                         );
[INFO] [stdout]     | |_________________________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(help_span)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(help_span)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: this warning originates in the macro `error_duplicate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `help_span`
[INFO] [stdout]    --> src/derive.rs:29:22
[INFO] [stdout]     |
[INFO] [stdout]  29 |               if #[cfg(help_span)] {
[INFO] [stdout]     |                        ^^^^^^^^^ help: found config with similar value: `feature = "help_span"`
[INFO] [stdout] ...
[INFO] [stdout] 400 | /             error_duplicate!(
[INFO] [stdout] 401 | |                 lit, "The attribute `{}` already use this function name.", attr2.ident;
[INFO] [stdout] 402 | |                 lit2, "First use of `{}` here.", lit.value()
[INFO] [stdout] 403 | |             );
[INFO] [stdout]     | |_____________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(help_span)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(help_span)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: this warning originates in the macro `error_duplicate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `help_span`
[INFO] [stdout]    --> src/derive.rs:29:22
[INFO] [stdout]     |
[INFO] [stdout]  29 |               if #[cfg(help_span)] {
[INFO] [stdout]     |                        ^^^^^^^^^ help: found config with similar value: `feature = "help_span"`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/config.rs:114:17
[INFO] [stdout]     |
[INFO] [stdout] 114 | /                 error_duplicate!(
[INFO] [stdout] 115 | |                     attr, "This config is already set." ;
[INFO] [stdout] 116 | |                     str2, "Value for config `{}` is already set here.", path_str.join("::")
[INFO] [stdout] 117 | |                 );
[INFO] [stdout]     | |_________________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(help_span)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(help_span)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `error_duplicate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `help_span`
[INFO] [stdout]    --> src/derive.rs:29:22
[INFO] [stdout]     |
[INFO] [stdout]  29 |               if #[cfg(help_span)] {
[INFO] [stdout]     |                        ^^^^^^^^^ help: found config with similar value: `feature = "help_span"`
[INFO] [stdout] ...
[INFO] [stdout] 272 | /             error_duplicate!(
[INFO] [stdout] 273 | |                 value, "The value is already set for this attribute.";
[INFO] [stdout] 274 | |                 value2.get_span(), "First value of `{}` is set here.", self.ident
[INFO] [stdout] 275 | |             );
[INFO] [stdout]     | |_____________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(help_span)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(help_span)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: this warning originates in the macro `error_duplicate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `help_span`
[INFO] [stdout]    --> src/derive.rs:29:22
[INFO] [stdout]     |
[INFO] [stdout]  29 |               if #[cfg(help_span)] {
[INFO] [stdout]     |                        ^^^^^^^^^ help: found config with similar value: `feature = "help_span"`
[INFO] [stdout] ...
[INFO] [stdout] 369 | /                         error_duplicate!(
[INFO] [stdout] 370 | |                             declaration.ident, "This attribute is already declared.";
[INFO] [stdout] 371 | |                             declaration2.ident, "`{}` is already declared here.", declaration2.ident
[INFO] [stdout] 372 | |                         );
[INFO] [stdout]     | |_________________________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(help_span)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(help_span)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: this warning originates in the macro `error_duplicate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `help_span`
[INFO] [stdout]    --> src/derive.rs:29:22
[INFO] [stdout]     |
[INFO] [stdout]  29 |               if #[cfg(help_span)] {
[INFO] [stdout]     |                        ^^^^^^^^^ help: found config with similar value: `feature = "help_span"`
[INFO] [stdout] ...
[INFO] [stdout] 400 | /             error_duplicate!(
[INFO] [stdout] 401 | |                 lit, "The attribute `{}` already use this function name.", attr2.ident;
[INFO] [stdout] 402 | |                 lit2, "First use of `{}` here.", lit.value()
[INFO] [stdout] 403 | |             );
[INFO] [stdout]     | |_____________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(help_span)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(help_span)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: this warning originates in the macro `error_duplicate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.42s
[INFO] running `Command { std: "docker" "inspect" "d849c2bf35fc06e935839f83da282315a4fa54f684c063fbaf99653edf44ad15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d849c2bf35fc06e935839f83da282315a4fa54f684c063fbaf99653edf44ad15", kill_on_drop: false }`
[INFO] [stdout] d849c2bf35fc06e935839f83da282315a4fa54f684c063fbaf99653edf44ad15
