[INFO] fetching crate terminal 0.2.1...
[INFO] building terminal-0.2.1 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate terminal 0.2.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate terminal 0.2.1
[INFO] finished tweaking crates.io crate terminal 0.2.1
[INFO] tweaked toml for crates.io crate terminal 0.2.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate terminal 0.2.1 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate terminal 0.2.1 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded numtoa v0.1.0
[INFO] [stderr]   Downloaded termion v1.5.4
[INFO] [stderr]   Downloaded signal-hook v0.1.13
[INFO] [stderr]   Downloaded crossterm_winapi v0.6.1
[INFO] [stderr]   Downloaded signal-hook-registry v1.2.0
[INFO] [stderr]   Downloaded lock_api v0.3.3
[INFO] [stderr]   Downloaded redox_termios v0.1.1
[INFO] [stderr]   Downloaded crosscurses v0.1.0
[INFO] [stderr]   Downloaded crossbeam-utils v0.7.0
[INFO] [stderr]   Downloaded crossbeam-channel v0.4.0
[INFO] [stderr]   Downloaded crossterm v0.15.0
[INFO] [stderr]   Downloaded ncurses v5.99.0
[INFO] [stderr]   Downloaded pdcurses-sys v0.7.1
[INFO] [stderr]   Downloaded arc-swap v0.4.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 53be1ea4ee3fae358fa4e5fb9c2e0213beebccb893a97cad347490f72d8c9e2a
[INFO] running `Command { std: "docker" "start" "-a" "53be1ea4ee3fae358fa4e5fb9c2e0213beebccb893a97cad347490f72d8c9e2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "53be1ea4ee3fae358fa4e5fb9c2e0213beebccb893a97cad347490f72d8c9e2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53be1ea4ee3fae358fa4e5fb9c2e0213beebccb893a97cad347490f72d8c9e2a", kill_on_drop: false }`
[INFO] [stdout] 53be1ea4ee3fae358fa4e5fb9c2e0213beebccb893a97cad347490f72d8c9e2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aef7e6fead5b20be21c0a029361de4e178f3648198c804d6ab94a5f14ed343e7
[INFO] running `Command { std: "docker" "start" "-a" "aef7e6fead5b20be21c0a029361de4e178f3648198c804d6ab94a5f14ed343e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling arc-swap v0.4.4
[INFO] [stderr]    Compiling scopeguard v1.0.0
[INFO] [stderr]    Compiling smallvec v1.1.0
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling lock_api v0.3.3
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling parking_lot_core v0.7.0
[INFO] [stderr]    Compiling signal-hook-registry v1.2.0
[INFO] [stderr]    Compiling parking_lot v0.10.0
[INFO] [stderr]    Compiling mio v0.6.21
[INFO] [stderr]    Compiling signal-hook v0.1.13
[INFO] [stderr]    Compiling crossterm v0.15.0
[INFO] [stderr]    Compiling terminal v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/action.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]    = help: consider adding `serde` 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: `serde`
[INFO] [stdout]  --> src/enums/event.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]   = help: consider adding `serde` 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: `serde`
[INFO] [stdout]   --> src/enums/event.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]    = help: consider adding `serde` 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: `serde`
[INFO] [stdout]   --> src/enums/event.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]    = help: consider adding `serde` 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: `serde`
[INFO] [stdout]   --> src/enums/event.rs:96:12
[INFO] [stdout]    |
[INFO] [stdout] 96 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]    = help: consider adding `serde` 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: `serde`
[INFO] [stdout]    --> src/enums/event.rs:122:12
[INFO] [stdout]     |
[INFO] [stdout] 122 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]     = help: consider adding `serde` 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: `serde`
[INFO] [stdout]   --> src/enums/event.rs:87:16
[INFO] [stdout]    |
[INFO] [stdout] 87 |     #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]    = help: consider adding `serde` 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: `serde`
[INFO] [stdout]  --> src/enums/style.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]   = help: consider adding `serde` 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: `serde`
[INFO] [stdout]   --> src/enums/style.rs:90:12
[INFO] [stdout]    |
[INFO] [stdout] 90 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]    = help: consider adding `serde` 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: `serde`
[INFO] [stdout]  --> src/enums/terminal.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]   = help: consider adding `serde` 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: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/backend/crossterm/mapping.rs:178:76
[INFO] [stdout]     |
[INFO] [stdout] 178 |             e => ErrorKind::IoError(io::Error::new(io::ErrorKind::Other, e.description())),
[INFO] [stdout]     |                                                                            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.07s
[INFO] running `Command { std: "docker" "inspect" "aef7e6fead5b20be21c0a029361de4e178f3648198c804d6ab94a5f14ed343e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aef7e6fead5b20be21c0a029361de4e178f3648198c804d6ab94a5f14ed343e7", kill_on_drop: false }`
[INFO] [stdout] aef7e6fead5b20be21c0a029361de4e178f3648198c804d6ab94a5f14ed343e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e6d254b837a7a25fbe5f94203bbd143311e1164e6f753bb74a4681585483866
[INFO] running `Command { std: "docker" "start" "-a" "0e6d254b837a7a25fbe5f94203bbd143311e1164e6f753bb74a4681585483866", kill_on_drop: false }`
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/action.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]    = help: consider adding `serde` 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: `serde`
[INFO] [stdout]  --> src/enums/event.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]   = help: consider adding `serde` 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: `serde`
[INFO] [stdout]   --> src/enums/event.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]    = help: consider adding `serde` 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 terminal v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/enums/event.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]    = help: consider adding `serde` 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: `serde`
[INFO] [stdout]   --> src/enums/event.rs:96:12
[INFO] [stdout]    |
[INFO] [stdout] 96 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]    = help: consider adding `serde` 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: `serde`
[INFO] [stdout]    --> src/enums/event.rs:122:12
[INFO] [stdout]     |
[INFO] [stdout] 122 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]     = help: consider adding `serde` 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: `serde`
[INFO] [stdout]   --> src/enums/event.rs:87:16
[INFO] [stdout]    |
[INFO] [stdout] 87 |     #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]    = help: consider adding `serde` 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: `serde`
[INFO] [stdout]  --> src/enums/style.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]   = help: consider adding `serde` 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: `serde`
[INFO] [stdout]   --> src/enums/style.rs:90:12
[INFO] [stdout]    |
[INFO] [stdout] 90 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]    = help: consider adding `serde` 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: `serde`
[INFO] [stdout]  --> src/enums/terminal.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]   = help: consider adding `serde` 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: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/backend/crossterm/mapping.rs:178:76
[INFO] [stdout]     |
[INFO] [stdout] 178 |             e => ErrorKind::IoError(io::Error::new(io::ErrorKind::Other, e.description())),
[INFO] [stdout]     |                                                                            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `block_read` is never used
[INFO] [stdout]   --> examples/event.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn block_read() -> error::Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/action.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]    = help: consider adding `serde` 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: function `different_buffers` is never used
[INFO] [stdout]  --> examples/basic.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn different_buffers() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `perform_action` is never used
[INFO] [stdout]   --> examples/basic.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn perform_action() -> error::Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]  --> src/enums/event.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]   = help: consider adding `serde` 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: function `batch_actions` is never used
[INFO] [stdout]   --> examples/basic.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn batch_actions() -> error::Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lock_terminal` is never used
[INFO] [stdout]   --> examples/basic.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn lock_terminal() -> error::Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/enums/event.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]    = help: consider adding `serde` 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: `serde`
[INFO] [stdout]   --> src/enums/event.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]    = help: consider adding `serde` 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: `serde`
[INFO] [stdout]   --> src/enums/event.rs:96:12
[INFO] [stdout]    |
[INFO] [stdout] 96 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]    = help: consider adding `serde` 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: `serde`
[INFO] [stdout]    --> src/enums/event.rs:122:12
[INFO] [stdout]     |
[INFO] [stdout] 122 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]     = help: consider adding `serde` 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: `serde`
[INFO] [stdout]   --> src/enums/event.rs:87:16
[INFO] [stdout]    |
[INFO] [stdout] 87 |     #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]    = help: consider adding `serde` 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: `serde`
[INFO] [stdout]  --> src/enums/style.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]   = help: consider adding `serde` 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: `serde`
[INFO] [stdout]   --> src/enums/style.rs:90:12
[INFO] [stdout]    |
[INFO] [stdout] 90 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]    = help: consider adding `serde` 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: `serde`
[INFO] [stdout]  --> src/enums/terminal.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected values for `feature` are: `crossbeam-channel`, `crosscurses`, `crosscurses-backend`, `crossterm`, `crossterm-backend`, `default`, `libc`, `signal-hook`, `termion`, and `termion-backend`
[INFO] [stdout]   = help: consider adding `serde` 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: unused `Result` that must be used
[INFO] [stdout]  --> examples/event.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     with_duration_read();
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let _ = with_duration_read();
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/readme.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         terminal.write(format!("{}", i).as_bytes());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let _ = terminal.write(format!("{}", i).as_bytes());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/readme.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     terminal.flush_batch();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let _ = terminal.flush_batch();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/attribute.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     w.write(b"Display attributes");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let _ = w.write(b"Display attributes");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/attribute.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         w.act(Action::MoveCursorTo(0, y));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let _ = w.act(Action::MoveCursorTo(0, y));
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/attribute.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         w.batch(Action::SetAttribute(*on));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let _ = w.batch(Action::SetAttribute(*on));
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/attribute.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         w.write(format!("{:>width$} ", format!("{:?}", on), width = 35).as_bytes());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let _ = w.write(format!("{:>width$} ", format!("{:?}", on), width = 35).as_bytes());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/attribute.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         w.batch(Action::SetAttribute(*off));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let _ = w.batch(Action::SetAttribute(*off));
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/attribute.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |         w.write(format!("{:>width$}", format!("{:?}", off), width = 35).as_bytes());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let _ = w.write(format!("{:>width$}", format!("{:?}", off), width = 35).as_bytes());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/attribute.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |         w.batch(Action::ResetColor);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let _ = w.batch(Action::ResetColor);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/attribute.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         w.flush_batch();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let _ = w.flush_batch();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/attribute.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     display_attributes(&mut lock);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let _ = display_attributes(&mut lock);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rgb_red_values` is never used
[INFO] [stdout]   --> examples/style.rs:54:4
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn rgb_red_values<W: Write>(w: &mut TerminalLock<W>) -> error::Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rgb_green_values` is never used
[INFO] [stdout]   --> examples/style.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn rgb_green_values<W: Write>(w: &mut TerminalLock<W>) -> error::Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rgb_blue_values` is never used
[INFO] [stdout]   --> examples/style.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn rgb_blue_values<W: Write>(w: &mut TerminalLock<W>) -> error::Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/backend/crossterm/mapping.rs:178:76
[INFO] [stdout]     |
[INFO] [stdout] 178 |             e => ErrorKind::IoError(io::Error::new(io::ErrorKind::Other, e.description())),
[INFO] [stdout]     |                                                                            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/style.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     write!(w, "{}", title);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let _ = write!(w, "{}", title);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/style.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     w.flush();
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let _ = w.flush();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/style.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         write!(w, "{}", format!("{:>width$}", idx, width = 2));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let _ = write!(w, "{}", format!("{:>width$}", idx, width = 2));
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/style.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |         write!(w, "{}", format!("{:>width$}", idx, width = 3));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let _ = write!(w, "{}", format!("{:>width$}", idx, width = 3));
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/style.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |             write!(w, "███");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 34 |             let _ = write!(w, "███");
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/style.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         write!(w, "{}", format!("{:>width$} ..= ", row * 16, width = 3));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let _ = write!(w, "{}", format!("{:>width$} ..= ", row * 16, width = 3));
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/style.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         write!(w, "{}", format!("{:>width$}", row * 16 + 15, width = 3));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let _ = write!(w, "{}", format!("{:>width$}", row * 16 + 15, width = 3));
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "0e6d254b837a7a25fbe5f94203bbd143311e1164e6f753bb74a4681585483866", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e6d254b837a7a25fbe5f94203bbd143311e1164e6f753bb74a4681585483866", kill_on_drop: false }`
[INFO] [stdout] 0e6d254b837a7a25fbe5f94203bbd143311e1164e6f753bb74a4681585483866
