[INFO] cloning repository https://github.com/tiny-browserbook/exercise-html
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tiny-browserbook/exercise-html" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftiny-browserbook%2Fexercise-html", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftiny-browserbook%2Fexercise-html'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 510b1eaeb7bdb12d64a8ebb2fdef03dfe8910ef9
[INFO] checking tiny-browserbook/exercise-html against try#38c2997544af84fe301d600d6896397738163002 for pr-154205-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftiny-browserbook%2Fexercise-html" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tiny-browserbook/exercise-html
[INFO] finished tweaking git repo https://github.com/tiny-browserbook/exercise-html
[INFO] tweaked toml for git repo https://github.com/tiny-browserbook/exercise-html written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tiny-browserbook/exercise-html on toolchain 38c2997544af84fe301d600d6896397738163002
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38c2997544af84fe301d600d6896397738163002" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tiny-browserbook/exercise-html 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" "+38c2997544af84fe301d600d6896397738163002" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+38c2997544af84fe301d600d6896397738163002" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f0a623c91a74218bfef225f61354c3376f52b4bd18709c99df931cc677ad1210
[INFO] running `Command { std: "docker" "start" "-a" "f0a623c91a74218bfef225f61354c3376f52b4bd18709c99df931cc677ad1210", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f0a623c91a74218bfef225f61354c3376f52b4bd18709c99df931cc677ad1210", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0a623c91a74218bfef225f61354c3376f52b4bd18709c99df931cc677ad1210", kill_on_drop: false }`
[INFO] [stdout] f0a623c91a74218bfef225f61354c3376f52b4bd18709c99df931cc677ad1210
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+38c2997544af84fe301d600d6896397738163002" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e14b0f8eaba0a659ff48cf542456493ff839a9cbc3d8e4b76b5a22c9a24941a
[INFO] running `Command { std: "docker" "start" "-a" "3e14b0f8eaba0a659ff48cf542456493ff839a9cbc3d8e4b76b5a22c9a24941a", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking combine v4.5.2
[INFO] [stderr]     Checking exercise-html v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/html.rs:43:25
[INFO] [stdout]    |
[INFO] [stdout] 43 |     (char(' ')).map(|_| ("".to_string()))
[INFO] [stdout]    |                         ^              ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 43 -     (char(' ')).map(|_| ("".to_string()))
[INFO] [stdout] 43 +     (char(' ')).map(|_| "".to_string() )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] [FMTARGS] {"crate":"exercise_html","loc":"/rustc/38c2997544af84fe301d600d6896397738163002/library/core/src/macros/mod.rs:880:23","p":2,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"exercise_html","loc":"/rustc/38c2997544af84fe301d600d6896397738163002/library/core/src/macros/mod.rs:880:23","p":2,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"exercise_html","loc":"/rustc/38c2997544af84fe301d600d6896397738163002/library/core/src/macros/mod.rs:880:23","p":2,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"exercise_html","loc":"/rustc/38c2997544af84fe301d600d6896397738163002/library/core/src/macros/mod.rs:880:23","p":2,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"exercise_html","loc":"/rustc/38c2997544af84fe301d600d6896397738163002/library/core/src/macros/mod.rs:880:23","p":2,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"exercise_html","loc":"/rustc/38c2997544af84fe301d600d6896397738163002/library/core/src/macros/mod.rs:880:23","p":2,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"exercise_html","loc":"/rustc/38c2997544af84fe301d600d6896397738163002/library/core/src/macros/mod.rs:880:23","p":2,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/html.rs:43:25
[INFO] [stdout]    |
[INFO] [stdout] 43 |     (char(' ')).map(|_| ("".to_string()))
[INFO] [stdout]    |                         ^              ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 43 -     (char(' ')).map(|_| ("".to_string()))
[INFO] [stdout] 43 +     (char(' ')).map(|_| "".to_string() )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] [FMTARGS] {"crate":"exercise_html","loc":"/rustc/38c2997544af84fe301d600d6896397738163002/library/core/src/macros/mod.rs:880:23","p":2,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"exercise_html","loc":"/rustc/38c2997544af84fe301d600d6896397738163002/library/core/src/macros/mod.rs:880:23","p":2,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"exercise_html","loc":"/rustc/38c2997544af84fe301d600d6896397738163002/library/core/src/macros/mod.rs:880:23","p":2,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"exercise_html","loc":"/rustc/38c2997544af84fe301d600d6896397738163002/library/core/src/macros/mod.rs:880:23","p":2,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"exercise_html","loc":"/rustc/38c2997544af84fe301d600d6896397738163002/library/core/src/macros/mod.rs:880:23","p":2,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"exercise_html","loc":"/rustc/38c2997544af84fe301d600d6896397738163002/library/core/src/macros/mod.rs:880:23","p":2,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"exercise_html","loc":"/rustc/38c2997544af84fe301d600d6896397738163002/library/core/src/macros/mod.rs:880:23","p":2,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[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)]` (part of `#[warn(unused)]`) on by default
[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)]` (part of `#[warn(unused)]`) 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: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: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: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: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: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: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: 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)]` (part of `#[warn(unused)]`) 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 3.35s
[INFO] running `Command { std: "docker" "inspect" "3e14b0f8eaba0a659ff48cf542456493ff839a9cbc3d8e4b76b5a22c9a24941a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e14b0f8eaba0a659ff48cf542456493ff839a9cbc3d8e4b76b5a22c9a24941a", kill_on_drop: false }`
[INFO] [stdout] 3e14b0f8eaba0a659ff48cf542456493ff839a9cbc3d8e4b76b5a22c9a24941a