[INFO] cloning repository https://github.com/openkylin/rust-clap-3
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/openkylin/rust-clap-3" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fopenkylin%2Frust-clap-3", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fopenkylin%2Frust-clap-3'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2b0adc7834518c4633e0d85e4b7dd67b412f8c5c
[INFO] testing openkylin/rust-clap-3 against try#17092ad00ed8fe1e7f81a7e38238ff70779034b1 for pr-140985
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fopenkylin%2Frust-clap-3" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/openkylin/rust-clap-3 on toolchain 17092ad00ed8fe1e7f81a7e38238ff70779034b1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/openkylin/rust-clap-3
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/openkylin/rust-clap-3
[INFO] tweaked toml for git repo https://github.com/openkylin/rust-clap-3 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/openkylin/rust-clap-3 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" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] [stderr]     Updating clap_lex v0.2.4 -> v0.6.0 (available: v0.7.4)
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a02ec1d387a90b432d4adf359d59fae01560446cb7685b326aacf3be5c4b776b
[INFO] running `Command { std: "docker" "start" "-a" "a02ec1d387a90b432d4adf359d59fae01560446cb7685b326aacf3be5c4b776b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a02ec1d387a90b432d4adf359d59fae01560446cb7685b326aacf3be5c4b776b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a02ec1d387a90b432d4adf359d59fae01560446cb7685b326aacf3be5c4b776b", kill_on_drop: false }`
[INFO] [stdout] a02ec1d387a90b432d4adf359d59fae01560446cb7685b326aacf3be5c4b776b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e3e93085a59a79802bc9203bc52ef5fdbbed8e8aecf529fffd814891f904326
[INFO] running `Command { std: "docker" "start" "-a" "5e3e93085a59a79802bc9203bc52ef5fdbbed8e8aecf529fffd814891f904326", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling once_cell v1.13.0
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling clap_lex v0.6.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling textwrap v0.16.0
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v3.2.25 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-doc`
[INFO] [stdout]    --> src/lib.rs:154:7
[INFO] [stdout]     |
[INFO] [stdout] 154 | #[cfg(feature = "unstable-doc")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-doc` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-doc`
[INFO] [stdout]    --> src/lib.rs:156:7
[INFO] [stdout]     |
[INFO] [stdout] 156 | #[cfg(feature = "unstable-doc")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-doc` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-doc`
[INFO] [stdout]    --> src/lib.rs:158:7
[INFO] [stdout]     |
[INFO] [stdout] 158 | #[cfg(feature = "unstable-doc")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-doc` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-doc`
[INFO] [stdout]    --> src/lib.rs:160:7
[INFO] [stdout]     |
[INFO] [stdout] 160 | #[cfg(feature = "unstable-doc")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-doc` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-doc`
[INFO] [stdout]    --> src/lib.rs:162:7
[INFO] [stdout]     |
[INFO] [stdout] 162 | #[cfg(feature = "unstable-doc")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-doc` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/arg.rs:219:15
[INFO] [stdout]     |
[INFO] [stdout] 219 |         #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/arg.rs:223:19
[INFO] [stdout]     |
[INFO] [stdout] 223 |         #[cfg(not(feature = "unstable-v4"))]
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]     --> src/builder/command.rs:2350:15
[INFO] [stdout]      |
[INFO] [stdout] 2350 |         #[cfg(feature = "unstable-v4")]
[INFO] [stdout]      |               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]      = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]     --> src/builder/command.rs:2354:19
[INFO] [stdout]      |
[INFO] [stdout] 2354 |         #[cfg(not(feature = "unstable-v4"))]
[INFO] [stdout]      |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]      = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]     --> src/builder/command.rs:5104:25
[INFO] [stdout]      |
[INFO] [stdout] 5104 |                 || cfg!(feature = "unstable-v4")
[INFO] [stdout]      |                         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]      = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/possible_value.rs:156:11
[INFO] [stdout]     |
[INFO] [stdout] 156 |     #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/builder/debug_asserts.rs:30:27
[INFO] [stdout]    |
[INFO] [stdout] 30 |                 #[cfg(not(feature = "unstable-v4"))]
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/builder/debug_asserts.rs:32:23
[INFO] [stdout]    |
[INFO] [stdout] 32 |                 #[cfg(feature = "unstable-v4")]
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/builder/debug_asserts.rs:57:19
[INFO] [stdout]    |
[INFO] [stdout] 57 |             #[cfg(feature = "unstable-v4")]
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/builder/debug_asserts.rs:88:19
[INFO] [stdout]    |
[INFO] [stdout] 88 |             #[cfg(feature = "unstable-v4")]
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/debug_asserts.rs:164:19
[INFO] [stdout]     |
[INFO] [stdout] 164 |             #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/debug_asserts.rs:182:19
[INFO] [stdout]     |
[INFO] [stdout] 182 |             #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/debug_asserts.rs:200:19
[INFO] [stdout]     |
[INFO] [stdout] 200 |             #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/debug_asserts.rs:218:19
[INFO] [stdout]     |
[INFO] [stdout] 218 |             #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/debug_asserts.rs:691:11
[INFO] [stdout]     |
[INFO] [stdout] 691 |     #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/parser/arg_matcher.rs:39:27
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 #[cfg(not(feature = "unstable-v4"))]
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/parser/arg_matcher.rs:42:23
[INFO] [stdout]    |
[INFO] [stdout] 42 |                 #[cfg(feature = "unstable-v4")]
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/parser/parser.rs:432:25
[INFO] [stdout]     |
[INFO] [stdout] 432 |                 if cfg!(feature = "unstable-v4") || !raw_args.is_end(&args_cursor) {
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `features`
[INFO] [stdout]   --> src/parser/features/suggestions.rs:75:17
[INFO] [stdout]    |
[INFO] [stdout] 75 | #[cfg(all(test, features = "suggestions"))]
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[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] help: there is a config with a similar name and value
[INFO] [stdout]    |
[INFO] [stdout] 75 - #[cfg(all(test, features = "suggestions"))]
[INFO] [stdout] 75 + #[cfg(all(test, feature = "suggestions"))]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/output/help.rs:31:11
[INFO] [stdout]    |
[INFO] [stdout] 31 |     #[cfg(feature = "unstable-v4")]
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/output/help.rs:39:15
[INFO] [stdout]    |
[INFO] [stdout] 39 |     #[cfg(not(feature = "unstable-v4"))]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/output/help.rs:48:11
[INFO] [stdout]    |
[INFO] [stdout] 48 |     #[cfg(feature = "unstable-v4")]
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/output/help.rs:54:15
[INFO] [stdout]    |
[INFO] [stdout] 54 |     #[cfg(not(feature = "unstable-v4"))]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/output/help.rs:480:15
[INFO] [stdout]     |
[INFO] [stdout] 480 |         #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/output/help.rs:666:21
[INFO] [stdout]     |
[INFO] [stdout] 666 |             || cfg!(feature = "unstable-v4")
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/builder/command.rs:4454:17
[INFO] [stdout]      |
[INFO] [stdout] 4454 |             for mut sc in &mut self.subcommands {
[INFO] [stdout]      |                 ----^^
[INFO] [stdout]      |                 |
[INFO] [stdout]      |                 help: remove this `mut`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `parse` is never used
[INFO] [stdout]    --> src/builder/value_parser.rs:547:8
[INFO] [stdout]     |
[INFO] [stdout] 539 | trait AnyValueParser: Send + Sync + 'static {
[INFO] [stdout]     |       -------------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 547 |     fn parse(
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.39s
[INFO] running `Command { std: "docker" "inspect" "5e3e93085a59a79802bc9203bc52ef5fdbbed8e8aecf529fffd814891f904326", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e3e93085a59a79802bc9203bc52ef5fdbbed8e8aecf529fffd814891f904326", kill_on_drop: false }`
[INFO] [stdout] 5e3e93085a59a79802bc9203bc52ef5fdbbed8e8aecf529fffd814891f904326
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2747264554b946d4e37924fb79f2882d4253fe9179576cffc0b76e770e55ebd8
[INFO] running `Command { std: "docker" "start" "-a" "2747264554b946d4e37924fb79f2882d4253fe9179576cffc0b76e770e55ebd8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]    Compiling serde v1.0.139
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling serde_derive v1.0.139
[INFO] [stderr]    Compiling serde_json v1.0.82
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling once_cell v1.13.0
[INFO] [stderr]    Compiling ryu v1.0.10
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling itoa v1.0.2
[INFO] [stderr]    Compiling rustversion v1.0.8
[INFO] [stderr]    Compiling trybuild v1.0.63
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling clap_lex v0.6.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling textwrap v0.16.0
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling clap v3.2.25 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-doc`
[INFO] [stdout]    --> src/lib.rs:154:7
[INFO] [stdout]     |
[INFO] [stdout] 154 | #[cfg(feature = "unstable-doc")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-doc` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-doc`
[INFO] [stdout]    --> src/lib.rs:156:7
[INFO] [stdout]     |
[INFO] [stdout] 156 | #[cfg(feature = "unstable-doc")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-doc` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-doc`
[INFO] [stdout]    --> src/lib.rs:158:7
[INFO] [stdout]     |
[INFO] [stdout] 158 | #[cfg(feature = "unstable-doc")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-doc` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-doc`
[INFO] [stdout]    --> src/lib.rs:160:7
[INFO] [stdout]     |
[INFO] [stdout] 160 | #[cfg(feature = "unstable-doc")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-doc` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-doc`
[INFO] [stdout]    --> src/lib.rs:162:7
[INFO] [stdout]     |
[INFO] [stdout] 162 | #[cfg(feature = "unstable-doc")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-doc` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/arg.rs:219:15
[INFO] [stdout]     |
[INFO] [stdout] 219 |         #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/arg.rs:223:19
[INFO] [stdout]     |
[INFO] [stdout] 223 |         #[cfg(not(feature = "unstable-v4"))]
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]     --> src/builder/command.rs:2350:15
[INFO] [stdout]      |
[INFO] [stdout] 2350 |         #[cfg(feature = "unstable-v4")]
[INFO] [stdout]      |               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]      = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]     --> src/builder/command.rs:2354:19
[INFO] [stdout]      |
[INFO] [stdout] 2354 |         #[cfg(not(feature = "unstable-v4"))]
[INFO] [stdout]      |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]      = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]     --> src/builder/command.rs:5104:25
[INFO] [stdout]      |
[INFO] [stdout] 5104 |                 || cfg!(feature = "unstable-v4")
[INFO] [stdout]      |                         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]      = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/possible_value.rs:156:11
[INFO] [stdout]     |
[INFO] [stdout] 156 |     #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/builder/debug_asserts.rs:30:27
[INFO] [stdout]    |
[INFO] [stdout] 30 |                 #[cfg(not(feature = "unstable-v4"))]
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/builder/debug_asserts.rs:32:23
[INFO] [stdout]    |
[INFO] [stdout] 32 |                 #[cfg(feature = "unstable-v4")]
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/builder/debug_asserts.rs:57:19
[INFO] [stdout]    |
[INFO] [stdout] 57 |             #[cfg(feature = "unstable-v4")]
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/builder/debug_asserts.rs:88:19
[INFO] [stdout]    |
[INFO] [stdout] 88 |             #[cfg(feature = "unstable-v4")]
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/debug_asserts.rs:164:19
[INFO] [stdout]     |
[INFO] [stdout] 164 |             #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/debug_asserts.rs:182:19
[INFO] [stdout]     |
[INFO] [stdout] 182 |             #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/debug_asserts.rs:200:19
[INFO] [stdout]     |
[INFO] [stdout] 200 |             #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/debug_asserts.rs:218:19
[INFO] [stdout]     |
[INFO] [stdout] 218 |             #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/debug_asserts.rs:691:11
[INFO] [stdout]     |
[INFO] [stdout] 691 |     #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/parser/arg_matcher.rs:39:27
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 #[cfg(not(feature = "unstable-v4"))]
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/parser/arg_matcher.rs:42:23
[INFO] [stdout]    |
[INFO] [stdout] 42 |                 #[cfg(feature = "unstable-v4")]
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/parser/parser.rs:432:25
[INFO] [stdout]     |
[INFO] [stdout] 432 |                 if cfg!(feature = "unstable-v4") || !raw_args.is_end(&args_cursor) {
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `features`
[INFO] [stdout]   --> src/parser/features/suggestions.rs:75:17
[INFO] [stdout]    |
[INFO] [stdout] 75 | #[cfg(all(test, features = "suggestions"))]
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[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] help: there is a config with a similar name and value
[INFO] [stdout]    |
[INFO] [stdout] 75 - #[cfg(all(test, features = "suggestions"))]
[INFO] [stdout] 75 + #[cfg(all(test, feature = "suggestions"))]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/output/help.rs:31:11
[INFO] [stdout]    |
[INFO] [stdout] 31 |     #[cfg(feature = "unstable-v4")]
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/output/help.rs:39:15
[INFO] [stdout]    |
[INFO] [stdout] 39 |     #[cfg(not(feature = "unstable-v4"))]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/output/help.rs:48:11
[INFO] [stdout]    |
[INFO] [stdout] 48 |     #[cfg(feature = "unstable-v4")]
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/output/help.rs:54:15
[INFO] [stdout]    |
[INFO] [stdout] 54 |     #[cfg(not(feature = "unstable-v4"))]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/output/help.rs:480:15
[INFO] [stdout]     |
[INFO] [stdout] 480 |         #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/output/help.rs:666:21
[INFO] [stdout]     |
[INFO] [stdout] 666 |             || cfg!(feature = "unstable-v4")
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/builder/command.rs:4454:17
[INFO] [stdout]      |
[INFO] [stdout] 4454 |             for mut sc in &mut self.subcommands {
[INFO] [stdout]      |                 ----^^
[INFO] [stdout]      |                 |
[INFO] [stdout]      |                 help: remove this `mut`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling toml v0.5.9
[INFO] [stdout] warning: method `parse` is never used
[INFO] [stdout]    --> src/builder/value_parser.rs:547:8
[INFO] [stdout]     |
[INFO] [stdout] 539 | trait AnyValueParser: Send + Sync + 'static {
[INFO] [stdout]     |       -------------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 547 |     fn parse(
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-doc`
[INFO] [stdout]    --> src/lib.rs:154:7
[INFO] [stdout]     |
[INFO] [stdout] 154 | #[cfg(feature = "unstable-doc")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-doc` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-doc`
[INFO] [stdout]    --> src/lib.rs:156:7
[INFO] [stdout]     |
[INFO] [stdout] 156 | #[cfg(feature = "unstable-doc")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-doc` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-doc`
[INFO] [stdout]    --> src/lib.rs:158:7
[INFO] [stdout]     |
[INFO] [stdout] 158 | #[cfg(feature = "unstable-doc")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-doc` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-doc`
[INFO] [stdout]    --> src/lib.rs:160:7
[INFO] [stdout]     |
[INFO] [stdout] 160 | #[cfg(feature = "unstable-doc")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-doc` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-doc`
[INFO] [stdout]    --> src/lib.rs:162:7
[INFO] [stdout]     |
[INFO] [stdout] 162 | #[cfg(feature = "unstable-doc")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-doc` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/arg.rs:219:15
[INFO] [stdout]     |
[INFO] [stdout] 219 |         #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/arg.rs:223:19
[INFO] [stdout]     |
[INFO] [stdout] 223 |         #[cfg(not(feature = "unstable-v4"))]
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]     --> src/builder/command.rs:2350:15
[INFO] [stdout]      |
[INFO] [stdout] 2350 |         #[cfg(feature = "unstable-v4")]
[INFO] [stdout]      |               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]      = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]     --> src/builder/command.rs:2354:19
[INFO] [stdout]      |
[INFO] [stdout] 2354 |         #[cfg(not(feature = "unstable-v4"))]
[INFO] [stdout]      |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]      = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]     --> src/builder/command.rs:5104:25
[INFO] [stdout]      |
[INFO] [stdout] 5104 |                 || cfg!(feature = "unstable-v4")
[INFO] [stdout]      |                         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]      = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/possible_value.rs:156:11
[INFO] [stdout]     |
[INFO] [stdout] 156 |     #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/builder/debug_asserts.rs:30:27
[INFO] [stdout]    |
[INFO] [stdout] 30 |                 #[cfg(not(feature = "unstable-v4"))]
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/builder/debug_asserts.rs:32:23
[INFO] [stdout]    |
[INFO] [stdout] 32 |                 #[cfg(feature = "unstable-v4")]
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/builder/debug_asserts.rs:57:19
[INFO] [stdout]    |
[INFO] [stdout] 57 |             #[cfg(feature = "unstable-v4")]
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/builder/debug_asserts.rs:88:19
[INFO] [stdout]    |
[INFO] [stdout] 88 |             #[cfg(feature = "unstable-v4")]
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/debug_asserts.rs:164:19
[INFO] [stdout]     |
[INFO] [stdout] 164 |             #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/debug_asserts.rs:182:19
[INFO] [stdout]     |
[INFO] [stdout] 182 |             #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/debug_asserts.rs:200:19
[INFO] [stdout]     |
[INFO] [stdout] 200 |             #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/debug_asserts.rs:218:19
[INFO] [stdout]     |
[INFO] [stdout] 218 |             #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/builder/debug_asserts.rs:691:11
[INFO] [stdout]     |
[INFO] [stdout] 691 |     #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/parser/arg_matcher.rs:39:27
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 #[cfg(not(feature = "unstable-v4"))]
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/parser/arg_matcher.rs:42:23
[INFO] [stdout]    |
[INFO] [stdout] 42 |                 #[cfg(feature = "unstable-v4")]
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/parser/parser.rs:432:25
[INFO] [stdout]     |
[INFO] [stdout] 432 |                 if cfg!(feature = "unstable-v4") || !raw_args.is_end(&args_cursor) {
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `features`
[INFO] [stdout]   --> src/parser/features/suggestions.rs:75:17
[INFO] [stdout]    |
[INFO] [stdout] 75 | #[cfg(all(test, features = "suggestions"))]
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[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] help: there is a config with a similar name and value
[INFO] [stdout]    |
[INFO] [stdout] 75 - #[cfg(all(test, features = "suggestions"))]
[INFO] [stdout] 75 + #[cfg(all(test, feature = "suggestions"))]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/output/help.rs:31:11
[INFO] [stdout]    |
[INFO] [stdout] 31 |     #[cfg(feature = "unstable-v4")]
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/output/help.rs:39:15
[INFO] [stdout]    |
[INFO] [stdout] 39 |     #[cfg(not(feature = "unstable-v4"))]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/output/help.rs:48:11
[INFO] [stdout]    |
[INFO] [stdout] 48 |     #[cfg(feature = "unstable-v4")]
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]   --> src/output/help.rs:54:15
[INFO] [stdout]    |
[INFO] [stdout] 54 |     #[cfg(not(feature = "unstable-v4"))]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]    = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/output/help.rs:480:15
[INFO] [stdout]     |
[INFO] [stdout] 480 |         #[cfg(feature = "unstable-v4")]
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable-v4`
[INFO] [stdout]    --> src/output/help.rs:666:21
[INFO] [stdout]     |
[INFO] [stdout] 666 |             || cfg!(feature = "unstable-v4")
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `atty`, `backtrace`, `cargo`, `clap_derive`, `color`, `debug`, `default`, `deprecated`, `derive`, `env`, `regex`, `std`, `strsim`, `suggestions`, `termcolor`, `terminal_size`, `unicase`, `unicode`, `unstable-grouped`, `unstable-replace`, `wrap_help`, `yaml`, and `yaml-rust`
[INFO] [stdout]     = help: consider adding `unstable-v4` as a feature in `Cargo.toml`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/builder/command.rs:4454:17
[INFO] [stdout]      |
[INFO] [stdout] 4454 |             for mut sc in &mut self.subcommands {
[INFO] [stdout]      |                 ----^^
[INFO] [stdout]      |                 |
[INFO] [stdout]      |                 help: remove this `mut`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `parse` is never used
[INFO] [stdout]    --> src/builder/value_parser.rs:547:8
[INFO] [stdout]     |
[INFO] [stdout] 539 | trait AnyValueParser: Send + Sync + 'static {
[INFO] [stdout]     |       -------------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 547 |     fn parse(
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: couldn't create a temp dir: No space left on device (os error 28) at path "/opt/rustwide/target/debug/deps/rmetaSdg6y5"
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `clap` (lib test) due to 1 previous error; 32 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "2747264554b946d4e37924fb79f2882d4253fe9179576cffc0b76e770e55ebd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2747264554b946d4e37924fb79f2882d4253fe9179576cffc0b76e770e55ebd8", kill_on_drop: false }`
[INFO] [stdout] 2747264554b946d4e37924fb79f2882d4253fe9179576cffc0b76e770e55ebd8