[INFO] cloning repository https://github.com/RustLangES/mdbook-killer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RustLangES/mdbook-killer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRustLangES%2Fmdbook-killer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRustLangES%2Fmdbook-killer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e9b44676bfd89ed1190c756474a791c01b2ed6cc
[INFO] checking RustLangES/mdbook-killer/e9b44676bfd89ed1190c756474a791c01b2ed6cc against master#fd2c811d25ad5773fbd2463e058bf4edf4d44eb2 for pr-130443
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRustLangES%2Fmdbook-killer" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RustLangES/mdbook-killer on toolchain fd2c811d25ad5773fbd2463e058bf4edf4d44eb2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fd2c811d25ad5773fbd2463e058bf4edf4d44eb2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/RustLangES/mdbook-killer
[INFO] finished tweaking git repo https://github.com/RustLangES/mdbook-killer
[INFO] tweaked toml for git repo https://github.com/RustLangES/mdbook-killer written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/RustLangES/mdbook-killer 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" "+fd2c811d25ad5773fbd2463e058bf4edf4d44eb2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+fd2c811d25ad5773fbd2463e058bf4edf4d44eb2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16ebffe1b05634c9ee821f9efd674e406cbd9350cdc8b4709328f6263e8ebf4c
[INFO] running `Command { std: "docker" "start" "-a" "16ebffe1b05634c9ee821f9efd674e406cbd9350cdc8b4709328f6263e8ebf4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16ebffe1b05634c9ee821f9efd674e406cbd9350cdc8b4709328f6263e8ebf4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16ebffe1b05634c9ee821f9efd674e406cbd9350cdc8b4709328f6263e8ebf4c", kill_on_drop: false }`
[INFO] [stdout] 16ebffe1b05634c9ee821f9efd674e406cbd9350cdc8b4709328f6263e8ebf4c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+fd2c811d25ad5773fbd2463e058bf4edf4d44eb2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9bca37a96da268d0860f48a6785f85a87f747ff3b3fc40326e4978bab9354338
[INFO] running `Command { std: "docker" "start" "-a" "9bca37a96da268d0860f48a6785f85a87f747ff3b3fc40326e4978bab9354338", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling pkg-config v0.3.29
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking pin-project-lite v0.2.14
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]    Compiling rustversion v1.0.17
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking bitflags v2.5.0
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]    Compiling rustix v0.37.27
[INFO] [stderr]     Checking percent-encoding v2.3.1
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]     Checking tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling rustix v0.38.31
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking form_urlencoded v1.2.1
[INFO] [stderr]     Checking http v1.1.0
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]     Checking linux-raw-sys v0.3.8
[INFO] [stderr]    Compiling httparse v1.9.3
[INFO] [stderr]     Checking linux-raw-sys v0.4.13
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking os_str_bytes v6.4.1
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling jobserver v0.1.31
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]    Compiling axum-core v0.4.3
[INFO] [stderr]     Checking clap_lex v0.3.1
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]    Compiling cc v1.0.99
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]    Compiling serde_json v1.0.117
[INFO] [stderr]     Checking http-body v1.0.0
[INFO] [stderr]     Checking termcolor v1.2.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking tower-layer v0.3.2
[INFO] [stderr]     Checking hashbrown v0.14.3
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]     Checking httpdate v1.0.3
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]     Checking tower-service v0.3.2
[INFO] [stderr]     Checking anstyle-parse v0.2.3
[INFO] [stderr]    Compiling axum v0.7.5
[INFO] [stderr]     Checking thread_local v1.1.8
[INFO] [stderr]     Checking mime v0.3.17
[INFO] [stderr]     Checking anstyle v1.0.6
[INFO] [stderr]     Checking unicode-segmentation v1.10.1
[INFO] [stderr]     Checking colorchoice v1.0.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking socket2 v0.5.7
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking winnow v0.5.39
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking anstyle-query v1.0.2
[INFO] [stderr]     Checking sync_wrapper v0.1.2
[INFO] [stderr]     Checking is-terminal v0.4.10
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling anyhow v1.0.79
[INFO] [stderr]     Checking anstream v0.6.13
[INFO] [stderr]     Checking newline-converter v0.3.0
[INFO] [stderr]     Checking fuzzy-matcher v0.3.7
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking home v0.5.9
[INFO] [stderr]     Checking indexmap v2.2.2
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking crossterm v0.25.0
[INFO] [stderr]     Checking dyn-clone v1.0.10
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking sync_wrapper v1.0.1
[INFO] [stderr]     Checking matchit v0.7.3
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]     Checking http-body-util v0.1.2
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]    Compiling libz-sys v1.1.15
[INFO] [stderr]    Compiling openssl-sys v0.9.99
[INFO] [stderr]    Compiling libssh2-sys v0.3.0
[INFO] [stderr]    Compiling libgit2-sys v0.16.2+1.7.2
[INFO] [stderr]     Checking inquire v0.7.0
[INFO] [stderr]     Checking webbrowser v1.0.1
[INFO] [stderr]     Checking terminal_size v0.2.6
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]     Checking env_filter v0.1.0
[INFO] [stderr]     Checking env_logger v0.11.3
[INFO] [stderr]    Compiling clap_derive v4.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]    Compiling tokio-macros v2.3.0
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]    Compiling async-trait v0.1.80
[INFO] [stderr]     Checking tokio v1.38.0
[INFO] [stderr]     Checking pin-project v1.1.5
[INFO] [stderr]     Checking clap v4.1.6
[INFO] [stderr]     Checking clap_complete v4.5.1
[INFO] [stderr]     Checking clap-verbosity-flag v2.2.0
[INFO] [stderr]     Checking git2 v0.18.2
[INFO] [stderr]     Checking hyper v1.3.1
[INFO] [stderr]     Checking tower v0.4.13
[INFO] [stderr]     Checking serde_spanned v0.6.5
[INFO] [stderr]     Checking toml_datetime v0.6.5
[INFO] [stderr]     Checking serde_path_to_error v0.1.16
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking toml_edit v0.22.4
[INFO] [stderr]     Checking hyper-util v0.1.5
[INFO] [stderr]     Checking toml v0.8.10
[INFO] [stderr]     Checking mdbook-killer v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::Commands`
[INFO] [stdout]   --> src/commands/init.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use super::Commands;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Commands`
[INFO] [stdout]   --> src/commands/init.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use super::Commands;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `open`
[INFO] [stdout]    --> src/commands.rs:128:17
[INFO] [stdout]     |
[INFO] [stdout] 128 |                 open,
[INFO] [stdout]     |                 ^^^^ help: try ignoring the field: `open: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dest_dir`
[INFO] [stdout]    --> src/commands.rs:129:17
[INFO] [stdout]     |
[INFO] [stdout] 129 |                 dest_dir,
[INFO] [stdout]     |                 ^^^^^^^^ help: try ignoring the field: `dest_dir: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dir`
[INFO] [stdout]    --> src/commands.rs:130:17
[INFO] [stdout]     |
[INFO] [stdout] 130 |                 dir,
[INFO] [stdout]     |                 ^^^ help: try ignoring the field: `dir: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `open`
[INFO] [stdout]    --> src/commands.rs:133:17
[INFO] [stdout]     |
[INFO] [stdout] 133 |                 open,
[INFO] [stdout]     |                 ^^^^ help: try ignoring the field: `open: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dest_dir`
[INFO] [stdout]    --> src/commands.rs:134:17
[INFO] [stdout]     |
[INFO] [stdout] 134 |                 dest_dir,
[INFO] [stdout]     |                 ^^^^^^^^ help: try ignoring the field: `dest_dir: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dir`
[INFO] [stdout]    --> src/commands.rs:135:17
[INFO] [stdout]     |
[INFO] [stdout] 135 |                 dir,
[INFO] [stdout]     |                 ^^^ help: try ignoring the field: `dir: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dir`
[INFO] [stdout]    --> src/commands.rs:142:17
[INFO] [stdout]     |
[INFO] [stdout] 142 |                 dir,
[INFO] [stdout]     |                 ^^^ help: try ignoring the field: `dir: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `open`
[INFO] [stdout]    --> src/commands.rs:156:17
[INFO] [stdout]     |
[INFO] [stdout] 156 |                 open,
[INFO] [stdout]     |                 ^^^^ help: try ignoring the field: `open: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chapter`
[INFO] [stdout]    --> src/commands.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 chapter,
[INFO] [stdout]     |                 ^^^^^^^ help: try ignoring the field: `chapter: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `library_path`
[INFO] [stdout]    --> src/commands.rs:158:17
[INFO] [stdout]     |
[INFO] [stdout] 158 |                 library_path,
[INFO] [stdout]     |                 ^^^^^^^^^^^^ help: try ignoring the field: `library_path: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dir`
[INFO] [stdout]    --> src/commands.rs:159:17
[INFO] [stdout]     |
[INFO] [stdout] 159 |                 dir,
[INFO] [stdout]     |                 ^^^ help: try ignoring the field: `dir: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `open`
[INFO] [stdout]    --> src/commands.rs:128:17
[INFO] [stdout]     |
[INFO] [stdout] 128 |                 open,
[INFO] [stdout]     |                 ^^^^ help: try ignoring the field: `open: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dest_dir`
[INFO] [stdout]    --> src/commands.rs:129:17
[INFO] [stdout]     |
[INFO] [stdout] 129 |                 dest_dir,
[INFO] [stdout]     |                 ^^^^^^^^ help: try ignoring the field: `dest_dir: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dir`
[INFO] [stdout]    --> src/commands.rs:130:17
[INFO] [stdout]     |
[INFO] [stdout] 130 |                 dir,
[INFO] [stdout]     |                 ^^^ help: try ignoring the field: `dir: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `open`
[INFO] [stdout]    --> src/commands.rs:133:17
[INFO] [stdout]     |
[INFO] [stdout] 133 |                 open,
[INFO] [stdout]     |                 ^^^^ help: try ignoring the field: `open: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dest_dir`
[INFO] [stdout]    --> src/commands.rs:134:17
[INFO] [stdout]     |
[INFO] [stdout] 134 |                 dest_dir,
[INFO] [stdout]     |                 ^^^^^^^^ help: try ignoring the field: `dest_dir: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dir`
[INFO] [stdout]    --> src/commands.rs:135:17
[INFO] [stdout]     |
[INFO] [stdout] 135 |                 dir,
[INFO] [stdout]     |                 ^^^ help: try ignoring the field: `dir: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dir`
[INFO] [stdout]    --> src/commands.rs:142:17
[INFO] [stdout]     |
[INFO] [stdout] 142 |                 dir,
[INFO] [stdout]     |                 ^^^ help: try ignoring the field: `dir: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `open`
[INFO] [stdout]    --> src/commands.rs:156:17
[INFO] [stdout]     |
[INFO] [stdout] 156 |                 open,
[INFO] [stdout]     |                 ^^^^ help: try ignoring the field: `open: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chapter`
[INFO] [stdout]    --> src/commands.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 chapter,
[INFO] [stdout]     |                 ^^^^^^^ help: try ignoring the field: `chapter: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `library_path`
[INFO] [stdout]    --> src/commands.rs:158:17
[INFO] [stdout]     |
[INFO] [stdout] 158 |                 library_path,
[INFO] [stdout]     |                 ^^^^^^^^^^^^ help: try ignoring the field: `library_path: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dir`
[INFO] [stdout]    --> src/commands.rs:159:17
[INFO] [stdout]     |
[INFO] [stdout] 159 |                 dir,
[INFO] [stdout]     |                 ^^^ help: try ignoring the field: `dir: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/commands/init.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | /     std::fs::File::create(root_path.join("book.toml"))?
[INFO] [stdout] 52 | |         .write_all(toml::to_string_pretty(&config).unwrap().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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let _ = std::fs::File::create(root_path.join("book.toml"))?
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` in tuple element 0 that must be used
[INFO] [stdout]   --> src/commands/serve.rs:69:5
[INFO] [stdout]    |
[INFO] [stdout] 69 |     tokio::join!(server_task, browser_task);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `$crate::join` which comes from the expansion of the macro `tokio::join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` in tuple element 1 that must be used
[INFO] [stdout]   --> src/commands/serve.rs:69:5
[INFO] [stdout]    |
[INFO] [stdout] 69 |     tokio::join!(server_task, browser_task);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `$crate::join` which comes from the expansion of the macro `tokio::join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/commands/init.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | /     std::fs::File::create(root_path.join("book.toml"))?
[INFO] [stdout] 52 | |         .write_all(toml::to_string_pretty(&config).unwrap().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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let _ = std::fs::File::create(root_path.join("book.toml"))?
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` in tuple element 0 that must be used
[INFO] [stdout]   --> src/commands/serve.rs:69:5
[INFO] [stdout]    |
[INFO] [stdout] 69 |     tokio::join!(server_task, browser_task);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `$crate::join` which comes from the expansion of the macro `tokio::join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` in tuple element 1 that must be used
[INFO] [stdout]   --> src/commands/serve.rs:69:5
[INFO] [stdout]    |
[INFO] [stdout] 69 |     tokio::join!(server_task, browser_task);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `$crate::join` which comes from the expansion of the macro `tokio::join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mdbook_killer::models::Config`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use mdbook_killer::models::Config;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mdbook_killer::models::Config`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use mdbook_killer::models::Config;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.65s
[INFO] running `Command { std: "docker" "inspect" "9bca37a96da268d0860f48a6785f85a87f747ff3b3fc40326e4978bab9354338", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bca37a96da268d0860f48a6785f85a87f747ff3b3fc40326e4978bab9354338", kill_on_drop: false }`
[INFO] [stdout] 9bca37a96da268d0860f48a6785f85a87f747ff3b3fc40326e4978bab9354338
