[INFO] fetching crate serde_json_pythonic 0.1.2...
[INFO] checking serde_json_pythonic-0.1.2 against nightly-2024-02-05 for check-cfg
[INFO] extracting crate serde_json_pythonic 0.1.2 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate serde_json_pythonic 0.1.2 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 serde_json_pythonic 0.1.2
[INFO] finished tweaking crates.io crate serde_json_pythonic 0.1.2
[INFO] tweaked toml for crates.io crate serde_json_pythonic 0.1.2 written to /workspace/builds/worker-0-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 serde_stacker v0.1.11
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6a0568722e682010b7e8c57daa671d2381c1f59d538a30292133c86da597138
[INFO] running `Command { std: "docker" "start" "-a" "d6a0568722e682010b7e8c57daa671d2381c1f59d538a30292133c86da597138", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6a0568722e682010b7e8c57daa671d2381c1f59d538a30292133c86da597138", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6a0568722e682010b7e8c57daa671d2381c1f59d538a30292133c86da597138", kill_on_drop: false }`
[INFO] [stdout] d6a0568722e682010b7e8c57daa671d2381c1f59d538a30292133c86da597138
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd8e5622c10e048257ffebc203edf5e65f4c901e7efd002ef18403fb6b64be58
[INFO] running `Command { std: "docker" "start" "-a" "cd8e5622c10e048257ffebc203edf5e65f4c901e7efd002ef18403fb6b64be58", kill_on_drop: false }`
[INFO] [stderr]    Compiling trybuild v1.0.89
[INFO] [stderr]    Compiling serde_json_pythonic v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking dissimilar v1.0.7
[INFO] [stderr]    Compiling ref-cast v1.0.22
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]    Compiling indoc v2.0.4
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling psm v0.1.21
[INFO] [stderr]    Compiling stacker v0.1.15
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]    Compiling ref-cast-impl v1.0.22
[INFO] [stderr]    Compiling automod v1.0.14
[INFO] [stderr]     Checking serde v1.0.196
[INFO] [stderr]     Checking basic-toml v0.1.8
[INFO] [stderr]     Checking serde_json v1.0.113
[INFO] [stderr]     Checking serde_stacker v0.1.11
[INFO] [stderr]     Checking serde_bytes v0.11.14
[INFO] [stdout] warning: unused imports: `parse_concise_float`, `parse_truncated_float`
[INFO] [stdout]   --> tests/../src/lexical/mod.rs:38:23
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub use self::parse::{parse_concise_float, parse_truncated_float};
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::vec::Vec`
[INFO] [stdout]   --> tests/lexical.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub use std::vec::Vec;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `cmp`, `iter`, `mem`, `ops`
[INFO] [stdout]   --> tests/lexical.rs:31:19
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub use std::{cmp, iter, mem, ops};
[INFO] [stdout]    |                   ^^^  ^^^^  ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.99s
[INFO] running `Command { std: "docker" "inspect" "cd8e5622c10e048257ffebc203edf5e65f4c901e7efd002ef18403fb6b64be58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd8e5622c10e048257ffebc203edf5e65f4c901e7efd002ef18403fb6b64be58", kill_on_drop: false }`
[INFO] [stdout] cd8e5622c10e048257ffebc203edf5e65f4c901e7efd002ef18403fb6b64be58
[INFO] checking serde_json_pythonic-0.1.2 against nightly-2024-02-05+rustflags=-Dunexpected_cfgs+cargoflags=-Zcheck-cfg for check-cfg
[INFO] extracting crate serde_json_pythonic 0.1.2 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate serde_json_pythonic 0.1.2 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 serde_json_pythonic 0.1.2
[INFO] finished tweaking crates.io crate serde_json_pythonic 0.1.2
[INFO] tweaked toml for crates.io crate serde_json_pythonic 0.1.2 written to /workspace/builds/worker-0-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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 18a72819a9a7d25aa504865e667efd8fc36756dfe1f8423f7567a91dc5e8847f
[INFO] running `Command { std: "docker" "start" "-a" "18a72819a9a7d25aa504865e667efd8fc36756dfe1f8423f7567a91dc5e8847f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18a72819a9a7d25aa504865e667efd8fc36756dfe1f8423f7567a91dc5e8847f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18a72819a9a7d25aa504865e667efd8fc36756dfe1f8423f7567a91dc5e8847f", kill_on_drop: false }`
[INFO] [stdout] 18a72819a9a7d25aa504865e667efd8fc36756dfe1f8423f7567a91dc5e8847f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 492a01f5cab8e75510a3a8c80619acd83d4ba8407c34567d1f4caa08123a806d
[INFO] running `Command { std: "docker" "start" "-a" "492a01f5cab8e75510a3a8c80619acd83d4ba8407c34567d1f4caa08123a806d", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json_pythonic v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling trybuild v1.0.89
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking dissimilar v1.0.7
[INFO] [stderr]    Compiling indoc v2.0.4
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling psm v0.1.21
[INFO] [stderr]    Compiling stacker v0.1.15
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]    Compiling ref-cast-impl v1.0.22
[INFO] [stderr]    Compiling automod v1.0.14
[INFO] [stderr]     Checking ref-cast v1.0.22
[INFO] [stderr]     Checking serde v1.0.196
[INFO] [stderr]     Checking basic-toml v0.1.8
[INFO] [stderr]     Checking serde_json v1.0.113
[INFO] [stderr]     Checking serde_bytes v0.11.14
[INFO] [stderr]     Checking serde_stacker v0.1.11
[INFO] [stdout] error: unexpected `cfg` condition name: `docsrs`
[INFO] [stdout]    --> src/lib.rs:368:13
[INFO] [stdout]     |
[INFO] [stdout] 368 | #![cfg_attr(docsrs, feature(doc_cfg))]
[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(docsrs)");` 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: `docsrs`
[INFO] [stdout]    --> src/lib.rs:407:12
[INFO] [stdout]     |
[INFO] [stdout] 407 | #[cfg_attr(docsrs, doc(cfg(feature = "std")))]
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(docsrs)");` 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: `docsrs`
[INFO] [stdout]     --> src/de.rs:2515:12
[INFO] [stdout]      |
[INFO] [stdout] 2515 | #[cfg_attr(docsrs, doc(cfg(feature = "std")))]
[INFO] [stdout]      |            ^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(docsrs)");` 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: `no_btreemap_get_key_value`
[INFO] [stdout]    --> src/map.rs:109:47
[INFO] [stdout]     |
[INFO] [stdout] 109 |     #[cfg(any(feature = "preserve_order", not(no_btreemap_get_key_value)))]
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(no_btreemap_get_key_value)");` 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: `no_btreemap_retain`
[INFO] [stdout]    --> src/map.rs:279:15
[INFO] [stdout]     |
[INFO] [stdout] 279 |     #[cfg(not(no_btreemap_retain))]
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(no_btreemap_retain)");` 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: `no_btreemap_remove_entry`
[INFO] [stdout]    --> src/map.rs:156:51
[INFO] [stdout]     |
[INFO] [stdout] 156 |         #[cfg(any(feature = "preserve_order", not(no_btreemap_remove_entry)))]
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(no_btreemap_remove_entry)");` 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: `no_btreemap_remove_entry`
[INFO] [stdout]    --> src/map.rs:160:13
[INFO] [stdout]     |
[INFO] [stdout] 160 |             no_btreemap_remove_entry,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(no_btreemap_remove_entry)");` 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: `no_btreemap_get_key_value`
[INFO] [stdout]    --> src/map.rs:161:17
[INFO] [stdout]     |
[INFO] [stdout] 161 |             not(no_btreemap_get_key_value),
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(no_btreemap_get_key_value)");` 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: `no_btreemap_remove_entry`
[INFO] [stdout]    --> src/map.rs:171:13
[INFO] [stdout]     |
[INFO] [stdout] 171 |             no_btreemap_remove_entry,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(no_btreemap_remove_entry)");` 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: `no_btreemap_get_key_value`
[INFO] [stdout]    --> src/map.rs:172:13
[INFO] [stdout]     |
[INFO] [stdout] 172 |             no_btreemap_get_key_value,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(no_btreemap_get_key_value)");` 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: `docsrs`
[INFO] [stdout]   --> src/ser.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[cfg_attr(docsrs, doc(cfg(feature = "std")))]
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(docsrs)");` 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: `docsrs`
[INFO] [stdout]     --> src/ser.rs:2144:12
[INFO] [stdout]      |
[INFO] [stdout] 2144 | #[cfg_attr(docsrs, doc(cfg(feature = "std")))]
[INFO] [stdout]      |            ^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(docsrs)");` 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: `docsrs`
[INFO] [stdout]     --> src/ser.rs:2164:12
[INFO] [stdout]      |
[INFO] [stdout] 2164 | #[cfg_attr(docsrs, doc(cfg(feature = "std")))]
[INFO] [stdout]      |            ^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(docsrs)");` 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: `docsrs`
[INFO] [stdout]     --> src/ser.rs:2184:12
[INFO] [stdout]      |
[INFO] [stdout] 2184 | #[cfg_attr(docsrs, doc(cfg(feature = "std")))]
[INFO] [stdout]      |            ^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(docsrs)");` 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: `docsrs`
[INFO] [stdout]    --> src/read.rs:146:12
[INFO] [stdout]     |
[INFO] [stdout] 146 | #[cfg_attr(docsrs, doc(cfg(feature = "std")))]
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(docsrs)");` 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 15 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serde_json_pythonic` (lib) due to 16 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "492a01f5cab8e75510a3a8c80619acd83d4ba8407c34567d1f4caa08123a806d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "492a01f5cab8e75510a3a8c80619acd83d4ba8407c34567d1f4caa08123a806d", kill_on_drop: false }`
[INFO] [stdout] 492a01f5cab8e75510a3a8c80619acd83d4ba8407c34567d1f4caa08123a806d
