[INFO] fetching crate terminal-emulator 0.1.0...
[INFO] checking terminal-emulator-0.1.0 against nightly-2024-02-05 for check-cfg-2
[INFO] extracting crate terminal-emulator 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate terminal-emulator 0.1.0 on toolchain nightly-2024-02-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate terminal-emulator 0.1.0
[INFO] finished tweaking crates.io crate terminal-emulator 0.1.0
[INFO] tweaked toml for crates.io crate terminal-emulator 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded static_assertions v0.3.4
[INFO] [stderr]   Downloaded utf8parse v0.1.1
[INFO] [stderr]   Downloaded arraydeque v0.4.5
[INFO] [stderr]   Downloaded vte v0.3.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 665aef3851ca2445ec031644b8e856d2afa8a9a24b85e312bffa112adf85eb56
[INFO] running `Command { std: "docker" "start" "-a" "665aef3851ca2445ec031644b8e856d2afa8a9a24b85e312bffa112adf85eb56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "665aef3851ca2445ec031644b8e856d2afa8a9a24b85e312bffa112adf85eb56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "665aef3851ca2445ec031644b8e856d2afa8a9a24b85e312bffa112adf85eb56", kill_on_drop: false }`
[INFO] [stdout] 665aef3851ca2445ec031644b8e856d2afa8a9a24b85e312bffa112adf85eb56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d8f99d932d83b7510e2c9d0c8959a6fb3f39f7fe0ec1fa6368a22b649f257b9
[INFO] running `Command { std: "docker" "start" "-a" "0d8f99d932d83b7510e2c9d0c8959a6fb3f39f7fe0ec1fa6368a22b649f257b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling arraydeque v0.4.5
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking static_assertions v0.3.4
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking vte v0.3.3
[INFO] [stderr]     Checking terminal-emulator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Range` is imported redundantly
[INFO] [stdout]    --> src/term/mod.rs:812:13
[INFO] [stdout]     |
[INFO] [stdout] 17  | use std::ops::{Index, IndexMut, Range};
[INFO] [stdout]     |                                 ----- the item `Range` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 812 |         use std::ops::Range;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Range` is imported redundantly
[INFO] [stdout]    --> src/term/mod.rs:812:13
[INFO] [stdout]     |
[INFO] [stdout] 17  | use std::ops::{Index, IndexMut, Range};
[INFO] [stdout]     |                                 ----- the item `Range` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 812 |         use std::ops::Range;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/term/cell.rs:128:40
[INFO] [stdout]     |
[INFO] [stdout] 128 |             let mut chars = [std::mem::uninitialized(); MAX_ZEROWIDTH_CHARS + 1];
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/term/cell.rs:128:40
[INFO] [stdout]     |
[INFO] [stdout] 128 |             let mut chars = [std::mem::uninitialized(); MAX_ZEROWIDTH_CHARS + 1];
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `static_assertions::core::num::<impl usize>::saturating_sub` that must be used
[INFO] [stdout]     --> src/term/mod.rs:1253:21
[INFO] [stdout]      |
[INFO] [stdout] 1253 |                     col.saturating_sub(1);
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this returns the result of the operation, without modifying the original
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]      |
[INFO] [stdout] 1253 |                     let _ = col.saturating_sub(1);
[INFO] [stdout]      |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `char` does not permit being left uninitialized
[INFO] [stdout]    --> src/term/cell.rs:128:30
[INFO] [stdout]     |
[INFO] [stdout] 128 |             let mut chars = [std::mem::uninitialized(); MAX_ZEROWIDTH_CHARS + 1];
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              this code causes undefined behavior when executed
[INFO] [stdout]     |                              help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]     |
[INFO] [stdout]     = note: characters must be a valid Unicode codepoint
[INFO] [stdout]     = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `static_assertions::core::num::<impl usize>::saturating_sub` that must be used
[INFO] [stdout]     --> src/term/mod.rs:1253:21
[INFO] [stdout]      |
[INFO] [stdout] 1253 |                     col.saturating_sub(1);
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this returns the result of the operation, without modifying the original
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]      |
[INFO] [stdout] 1253 |                     let _ = col.saturating_sub(1);
[INFO] [stdout]      |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `char` does not permit being left uninitialized
[INFO] [stdout]    --> src/term/cell.rs:128:30
[INFO] [stdout]     |
[INFO] [stdout] 128 |             let mut chars = [std::mem::uninitialized(); MAX_ZEROWIDTH_CHARS + 1];
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              this code causes undefined behavior when executed
[INFO] [stdout]     |                              help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]     |
[INFO] [stdout]     = note: characters must be a valid Unicode codepoint
[INFO] [stdout]     = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "0d8f99d932d83b7510e2c9d0c8959a6fb3f39f7fe0ec1fa6368a22b649f257b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d8f99d932d83b7510e2c9d0c8959a6fb3f39f7fe0ec1fa6368a22b649f257b9", kill_on_drop: false }`
[INFO] [stdout] 0d8f99d932d83b7510e2c9d0c8959a6fb3f39f7fe0ec1fa6368a22b649f257b9
[INFO] checking terminal-emulator-0.1.0 against nightly-2024-02-05+rustflags=-Dunexpected_cfgs+cargoflags=-Zcheck-cfg for check-cfg-2
[INFO] extracting crate terminal-emulator 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate terminal-emulator 0.1.0 on toolchain nightly-2024-02-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate terminal-emulator 0.1.0
[INFO] finished tweaking crates.io crate terminal-emulator 0.1.0
[INFO] tweaked toml for crates.io crate terminal-emulator 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e0d87cee2b72bfdcbe5c2b7cbd495d0dc99df664b57a0a4a01ef6cc707724a05
[INFO] running `Command { std: "docker" "start" "-a" "e0d87cee2b72bfdcbe5c2b7cbd495d0dc99df664b57a0a4a01ef6cc707724a05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0d87cee2b72bfdcbe5c2b7cbd495d0dc99df664b57a0a4a01ef6cc707724a05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0d87cee2b72bfdcbe5c2b7cbd495d0dc99df664b57a0a4a01ef6cc707724a05", kill_on_drop: false }`
[INFO] [stdout] e0d87cee2b72bfdcbe5c2b7cbd495d0dc99df664b57a0a4a01ef6cc707724a05
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dunexpected_cfgs" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "check" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zcheck-cfg", kill_on_drop: false }`
[INFO] [stdout] c29558efcb75d8c8b58481e9c5853afc93d451f798f6ca3de7d24efd9118f8a0
[INFO] running `Command { std: "docker" "start" "-a" "c29558efcb75d8c8b58481e9c5853afc93d451f798f6ca3de7d24efd9118f8a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling arraydeque v0.4.5
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking static_assertions v0.3.4
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking vte v0.3.3
[INFO] [stderr]     Checking terminal-emulator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: unexpected `cfg` condition value: `bench`
[INFO] [stdout]     --> src/term/mod.rs:2128:17
[INFO] [stdout]      |
[INFO] [stdout] 2128 | #[cfg(all(test, feature = "bench"))]
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]      |
[INFO] [stdout]      = note: no expected values for `feature`
[INFO] [stdout]      = help: consider adding `bench` as a feature in `Cargo.toml`
[INFO] [stdout]      = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout]      = note: requested on the command line with `-D unexpected-cfgs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `bench`
[INFO] [stdout]    --> src/term/cell.rs:176:17
[INFO] [stdout]     |
[INFO] [stdout] 176 | #[cfg(all(test, feature = "bench"))]
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `bench` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Range` is imported redundantly
[INFO] [stdout]    --> src/term/mod.rs:812:13
[INFO] [stdout]     |
[INFO] [stdout] 17  | use std::ops::{Index, IndexMut, Range};
[INFO] [stdout]     |                                 ----- the item `Range` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 812 |         use std::ops::Range;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `bench`
[INFO] [stdout]     --> src/term/mod.rs:2128:17
[INFO] [stdout]      |
[INFO] [stdout] 2128 | #[cfg(all(test, feature = "bench"))]
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]      |
[INFO] [stdout]      = note: no expected values for `feature`
[INFO] [stdout]      = help: consider adding `bench` as a feature in `Cargo.toml`
[INFO] [stdout]      = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout]      = note: requested on the command line with `-D unexpected-cfgs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition value: `bench`
[INFO] [stdout]    --> src/term/cell.rs:176:17
[INFO] [stdout]     |
[INFO] [stdout] 176 | #[cfg(all(test, feature = "bench"))]
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `bench` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Range` is imported redundantly
[INFO] [stdout]    --> src/term/mod.rs:812:13
[INFO] [stdout]     |
[INFO] [stdout] 17  | use std::ops::{Index, IndexMut, Range};
[INFO] [stdout]     |                                 ----- the item `Range` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 812 |         use std::ops::Range;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/term/cell.rs:128:40
[INFO] [stdout]     |
[INFO] [stdout] 128 |             let mut chars = [std::mem::uninitialized(); MAX_ZEROWIDTH_CHARS + 1];
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/term/cell.rs:128:40
[INFO] [stdout]     |
[INFO] [stdout] 128 |             let mut chars = [std::mem::uninitialized(); MAX_ZEROWIDTH_CHARS + 1];
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `static_assertions::core::num::<impl usize>::saturating_sub` that must be used
[INFO] [stdout]     --> src/term/mod.rs:1253:21
[INFO] [stdout]      |
[INFO] [stdout] 1253 |                     col.saturating_sub(1);
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this returns the result of the operation, without modifying the original
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]      |
[INFO] [stdout] 1253 |                     let _ = col.saturating_sub(1);
[INFO] [stdout]      |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `char` does not permit being left uninitialized
[INFO] [stdout]    --> src/term/cell.rs:128:30
[INFO] [stdout]     |
[INFO] [stdout] 128 |             let mut chars = [std::mem::uninitialized(); MAX_ZEROWIDTH_CHARS + 1];
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              this code causes undefined behavior when executed
[INFO] [stdout]     |                              help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]     |
[INFO] [stdout]     = note: characters must be a valid Unicode codepoint
[INFO] [stdout]     = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `terminal-emulator` (lib) due to 3 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused return value of `static_assertions::core::num::<impl usize>::saturating_sub` that must be used
[INFO] [stdout]     --> src/term/mod.rs:1253:21
[INFO] [stdout]      |
[INFO] [stdout] 1253 |                     col.saturating_sub(1);
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this returns the result of the operation, without modifying the original
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]      |
[INFO] [stdout] 1253 |                     let _ = col.saturating_sub(1);
[INFO] [stdout]      |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `char` does not permit being left uninitialized
[INFO] [stdout]    --> src/term/cell.rs:128:30
[INFO] [stdout]     |
[INFO] [stdout] 128 |             let mut chars = [std::mem::uninitialized(); MAX_ZEROWIDTH_CHARS + 1];
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              this code causes undefined behavior when executed
[INFO] [stdout]     |                              help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]     |
[INFO] [stdout]     = note: characters must be a valid Unicode codepoint
[INFO] [stdout]     = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `terminal-emulator` (lib test) due to 3 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "c29558efcb75d8c8b58481e9c5853afc93d451f798f6ca3de7d24efd9118f8a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c29558efcb75d8c8b58481e9c5853afc93d451f798f6ca3de7d24efd9118f8a0", kill_on_drop: false }`
[INFO] [stdout] c29558efcb75d8c8b58481e9c5853afc93d451f798f6ca3de7d24efd9118f8a0
