[INFO] cloning repository https://github.com/shunak/html_parser_training
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shunak/html_parser_training" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshunak%2Fhtml_parser_training", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshunak%2Fhtml_parser_training'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshunak%2Fhtml_parser_training: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/shunak/html_parser_training
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shunak/html_parser_training" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshunak%2Fhtml_parser_training", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshunak%2Fhtml_parser_training'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8a8ea1ade8db69d9eaa97776865e85b447bcf562
[INFO] building shunak/html_parser_training against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshunak%2Fhtml_parser_training" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shunak/html_parser_training on toolchain 44f415c1d617ebc7b931a243b7b321ef8a6ca47c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shunak/html_parser_training
[INFO] finished tweaking git repo https://github.com/shunak/html_parser_training
[INFO] tweaked toml for git repo https://github.com/shunak/html_parser_training written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/shunak/html_parser_training 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" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e1b7dfc024d39d0fe7e14e5f1091345fd13b717f9143e098c02b91c1e00fad0f
[INFO] running `Command { std: "docker" "start" "-a" "e1b7dfc024d39d0fe7e14e5f1091345fd13b717f9143e098c02b91c1e00fad0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1b7dfc024d39d0fe7e14e5f1091345fd13b717f9143e098c02b91c1e00fad0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1b7dfc024d39d0fe7e14e5f1091345fd13b717f9143e098c02b91c1e00fad0f", kill_on_drop: false }`
[INFO] [stdout] e1b7dfc024d39d0fe7e14e5f1091345fd13b717f9143e098c02b91c1e00fad0f
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 03c895d18047770bcf3d9bc03e220660b5f24155829defa4e4739b1173224400
[INFO] running `Command { std: "docker" "start" "-a" "03c895d18047770bcf3d9bc03e220660b5f24155829defa4e4739b1173224400", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling combine v4.5.2
[INFO] [stderr]    Compiling exercise-html v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 13 |     (char(' ')).map(|_| ("".to_string(), "".to_string()))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 23 |     (char(' ')).map(|_| AttrMap::new())
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 33 |     (char(' ')).map(|_| ("".to_string(), AttrMap::new()))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 43 |     (char(' ')).map(|_| ("".to_string()))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 52 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 53 |     (char(' ')).map(|_| vec![Element::new("".into(), AttrMap::new(), vec![])])
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 62 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 63 |     (char(' ')).map(|_| Element::new("".into(), AttrMap::new(), vec![]))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 72 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 73 |     (char(' ')).map(|_| Element::new("".into(), AttrMap::new(), vec![]))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `attribute` is never used
[INFO] [stdout]  --> src/html.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn attribute<Input>() -> impl Parser<Input, Output = (String, String)>
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `attributes` is never used
[INFO] [stdout]   --> src/html.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn attributes<Input>() -> impl Parser<Input, Output = AttrMap>
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `open_tag` is never used
[INFO] [stdout]   --> src/html.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn open_tag<Input>() -> impl Parser<Input, Output = (String, AttrMap)>
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `close_tag` is never used
[INFO] [stdout]   --> src/html.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn close_tag<Input>() -> impl Parser<Input, Output = String>
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `text` is never used
[INFO] [stdout]   --> src/html.rs:57:4
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn text<Input>() -> impl Parser<Input, Output = Box<Node>>
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `element` is never used
[INFO] [stdout]   --> src/html.rs:67:4
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn element<Input>() -> impl Parser<Input, Output = Box<Node>>
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.76s
[INFO] running `Command { std: "docker" "inspect" "03c895d18047770bcf3d9bc03e220660b5f24155829defa4e4739b1173224400", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03c895d18047770bcf3d9bc03e220660b5f24155829defa4e4739b1173224400", kill_on_drop: false }`
[INFO] [stdout] 03c895d18047770bcf3d9bc03e220660b5f24155829defa4e4739b1173224400
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 519e0fa7d08d62aa2250ab4a3c6c2a53d9a16c3270faa2dbd2e3c4fe6ecfcedd
[INFO] running `Command { std: "docker" "start" "-a" "519e0fa7d08d62aa2250ab4a3c6c2a53d9a16c3270faa2dbd2e3c4fe6ecfcedd", kill_on_drop: false }`
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 13 |     (char(' ')).map(|_| ("".to_string(), "".to_string()))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 23 |     (char(' ')).map(|_| AttrMap::new())
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 33 |     (char(' ')).map(|_| ("".to_string(), AttrMap::new()))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 43 |     (char(' ')).map(|_| ("".to_string()))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 52 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 53 |     (char(' ')).map(|_| vec![Element::new("".into(), AttrMap::new(), vec![])])
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling exercise-html v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 62 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 63 |     (char(' ')).map(|_| Element::new("".into(), AttrMap::new(), vec![]))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 72 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 73 |     (char(' ')).map(|_| Element::new("".into(), AttrMap::new(), vec![]))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `attribute` is never used
[INFO] [stdout]  --> src/html.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn attribute<Input>() -> impl Parser<Input, Output = (String, String)>
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `attributes` is never used
[INFO] [stdout]   --> src/html.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn attributes<Input>() -> impl Parser<Input, Output = AttrMap>
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `open_tag` is never used
[INFO] [stdout]   --> src/html.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn open_tag<Input>() -> impl Parser<Input, Output = (String, AttrMap)>
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `close_tag` is never used
[INFO] [stdout]   --> src/html.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn close_tag<Input>() -> impl Parser<Input, Output = String>
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `text` is never used
[INFO] [stdout]   --> src/html.rs:57:4
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn text<Input>() -> impl Parser<Input, Output = Box<Node>>
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `element` is never used
[INFO] [stdout]   --> src/html.rs:67:4
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn element<Input>() -> impl Parser<Input, Output = Box<Node>>
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 13 |     (char(' ')).map(|_| ("".to_string(), "".to_string()))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 23 |     (char(' ')).map(|_| AttrMap::new())
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 33 |     (char(' ')).map(|_| ("".to_string(), AttrMap::new()))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 43 |     (char(' ')).map(|_| ("".to_string()))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 52 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 53 |     (char(' ')).map(|_| vec![Element::new("".into(), AttrMap::new(), vec![])])
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 62 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 63 |     (char(' ')).map(|_| Element::new("".into(), AttrMap::new(), vec![]))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 72 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 73 |     (char(' ')).map(|_| Element::new("".into(), AttrMap::new(), vec![]))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "519e0fa7d08d62aa2250ab4a3c6c2a53d9a16c3270faa2dbd2e3c4fe6ecfcedd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "519e0fa7d08d62aa2250ab4a3c6c2a53d9a16c3270faa2dbd2e3c4fe6ecfcedd", kill_on_drop: false }`
[INFO] [stdout] 519e0fa7d08d62aa2250ab4a3c6c2a53d9a16c3270faa2dbd2e3c4fe6ecfcedd