[INFO] fetching crate cloudwatch_logging 1.0.0...
[INFO] checking cloudwatch_logging-1.0.0 against nightly-2024-02-05 for check-cfg
[INFO] extracting crate cloudwatch_logging 1.0.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate cloudwatch_logging 1.0.0 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 cloudwatch_logging 1.0.0
[INFO] finished tweaking crates.io crate cloudwatch_logging 1.0.0
[INFO] tweaked toml for crates.io crate cloudwatch_logging 1.0.0 written to /workspace/builds/worker-5-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 tokio-test v0.4.3
[INFO] [stderr]   Downloaded rusoto_logs v0.48.0
[INFO] [stderr]   Downloaded rusoto_credential v0.48.0
[INFO] [stderr]   Downloaded md-5 v0.9.1
[INFO] [stderr]   Downloaded rusoto_core v0.48.0
[INFO] [stderr]   Downloaded rusoto_signature v0.48.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] f7b003ea60cd6459c274ffd1abee0e24b29dddd0f508176e43c483e9c29986c0
[INFO] running `Command { std: "docker" "start" "-a" "f7b003ea60cd6459c274ffd1abee0e24b29dddd0f508176e43c483e9c29986c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7b003ea60cd6459c274ffd1abee0e24b29dddd0f508176e43c483e9c29986c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7b003ea60cd6459c274ffd1abee0e24b29dddd0f508176e43c483e9c29986c0", kill_on_drop: false }`
[INFO] [stdout] f7b003ea60cd6459c274ffd1abee0e24b29dddd0f508176e43c483e9c29986c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 443562856b6888704f842d366732821ce3772a57f4fb67884773bf9e13f9af48
[INFO] running `Command { std: "docker" "start" "-a" "443562856b6888704f842d366732821ce3772a57f4fb67884773bf9e13f9af48", kill_on_drop: false }`
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling semver v1.0.21
[INFO] [stderr]    Compiling async-trait v0.1.77
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking iana-time-zone v0.1.60
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]    Compiling rustversion v1.0.14
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking shlex v1.3.0
[INFO] [stderr]     Checking cpufeatures v0.2.12
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]    Compiling rusoto_core v0.48.0
[INFO] [stderr]     Checking xml-rs v0.8.19
[INFO] [stderr]     Checking overload v0.1.1
[INFO] [stderr]     Checking nu-ansi-term v0.46.0
[INFO] [stderr]     Checking sharded-slab v0.1.7
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]    Compiling generator v0.7.5
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.11.1
[INFO] [stderr]     Checking md-5 v0.9.1
[INFO] [stderr]     Checking hmac v0.11.0
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking regex-automata v0.4.5
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking matchers v0.1.0
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling async-stream-impl v0.3.5
[INFO] [stderr]     Checking async-stream v0.3.5
[INFO] [stderr]     Checking openssl v0.10.63
[INFO] [stderr]     Checking tokio v1.36.0
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]     Checking loom v0.7.1
[INFO] [stderr]     Checking serde v1.0.196
[INFO] [stderr]     Checking native-tls v0.2.11
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking tokio-stream v0.1.14
[INFO] [stderr]     Checking h2 v0.3.24
[INFO] [stderr]     Checking tokio-test v0.4.3
[INFO] [stderr]     Checking serde_json v1.0.113
[INFO] [stderr]     Checking chrono v0.4.33
[INFO] [stderr]     Checking hyper v0.14.28
[INFO] [stderr]     Checking rusoto_credential v0.48.0
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking rusoto_signature v0.48.0
[INFO] [stderr]     Checking rusoto_logs v0.48.0
[INFO] [stderr]     Checking cloudwatch_logging v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.53s
[INFO] running `Command { std: "docker" "inspect" "443562856b6888704f842d366732821ce3772a57f4fb67884773bf9e13f9af48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "443562856b6888704f842d366732821ce3772a57f4fb67884773bf9e13f9af48", kill_on_drop: false }`
[INFO] [stdout] 443562856b6888704f842d366732821ce3772a57f4fb67884773bf9e13f9af48
[INFO] checking cloudwatch_logging-1.0.0 against nightly-2024-02-05+rustflags=-Dunexpected_cfgs+cargoflags=-Zcheck-cfg for check-cfg
[INFO] extracting crate cloudwatch_logging 1.0.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate cloudwatch_logging 1.0.0 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 cloudwatch_logging 1.0.0
[INFO] finished tweaking crates.io crate cloudwatch_logging 1.0.0
[INFO] tweaked toml for crates.io crate cloudwatch_logging 1.0.0 written to /workspace/builds/worker-5-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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] c5aebc58a17a1c5635060b55983b8a418b8643edca1cab340b454ac799fce0f1
[INFO] running `Command { std: "docker" "start" "-a" "c5aebc58a17a1c5635060b55983b8a418b8643edca1cab340b454ac799fce0f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5aebc58a17a1c5635060b55983b8a418b8643edca1cab340b454ac799fce0f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5aebc58a17a1c5635060b55983b8a418b8643edca1cab340b454ac799fce0f1", kill_on_drop: false }`
[INFO] [stdout] c5aebc58a17a1c5635060b55983b8a418b8643edca1cab340b454ac799fce0f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] c07b3fe3d0731369840f5da4e6f48cb42d7ba4be6bb853069bd343a49217e4eb
[INFO] running `Command { std: "docker" "start" "-a" "c07b3fe3d0731369840f5da4e6f48cb42d7ba4be6bb853069bd343a49217e4eb", kill_on_drop: false }`
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling semver v1.0.21
[INFO] [stderr]    Compiling async-trait v0.1.77
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling rustversion v1.0.14
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking iana-time-zone v0.1.60
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking cpufeatures v0.2.12
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking shlex v1.3.0
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]    Compiling rusoto_core v0.48.0
[INFO] [stderr]     Checking xml-rs v0.8.19
[INFO] [stderr]     Checking overload v0.1.1
[INFO] [stderr]     Checking sharded-slab v0.1.7
[INFO] [stderr]     Checking nu-ansi-term v0.46.0
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]    Compiling generator v0.7.5
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.11.1
[INFO] [stderr]     Checking md-5 v0.9.1
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking hmac v0.11.0
[INFO] [stderr]     Checking regex-automata v0.4.5
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking matchers v0.1.0
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling async-stream-impl v0.3.5
[INFO] [stderr]     Checking openssl v0.10.63
[INFO] [stderr]     Checking tokio v1.36.0
[INFO] [stderr]     Checking async-stream v0.3.5
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]     Checking loom v0.7.1
[INFO] [stderr]     Checking serde v1.0.196
[INFO] [stderr]     Checking native-tls v0.2.11
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking tokio-stream v0.1.14
[INFO] [stderr]     Checking tokio-test v0.4.3
[INFO] [stderr]     Checking h2 v0.3.24
[INFO] [stderr]     Checking serde_json v1.0.113
[INFO] [stderr]     Checking chrono v0.4.33
[INFO] [stderr]     Checking hyper v0.14.28
[INFO] [stderr]     Checking rusoto_credential v0.48.0
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking rusoto_signature v0.48.0
[INFO] [stderr]     Checking rusoto_logs v0.48.0
[INFO] [stderr]     Checking cloudwatch_logging v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: unexpected `cfg` condition name: `docsrs`
[INFO] [stdout]  --> src/lib.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![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/prelude.rs:391:16
[INFO] [stdout]     |
[INFO] [stdout] 391 |     #[cfg_attr(docsrs, doc(cfg(feature = "singleton")))]
[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/lib.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![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/prelude.rs:391:16
[INFO] [stdout]     |
[INFO] [stdout] 391 |     #[cfg_attr(docsrs, doc(cfg(feature = "singleton")))]
[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 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cloudwatch_logging` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cloudwatch_logging` (lib test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "c07b3fe3d0731369840f5da4e6f48cb42d7ba4be6bb853069bd343a49217e4eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c07b3fe3d0731369840f5da4e6f48cb42d7ba4be6bb853069bd343a49217e4eb", kill_on_drop: false }`
[INFO] [stdout] c07b3fe3d0731369840f5da4e6f48cb42d7ba4be6bb853069bd343a49217e4eb
