[INFO] cloning repository https://github.com/shunak/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/shunak/exercise-html" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshunak%2Fexercise-html", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshunak%2Fexercise-html'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 776eb66fef2ac0ad60a8fa36ac7a8a924e66ccaa
[INFO] testing shunak/exercise-html against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshunak%2Fexercise-html" "/workspace/builds/worker-19/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-19/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shunak/exercise-html on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shunak/exercise-html
[INFO] finished tweaking git repo https://github.com/shunak/exercise-html
[INFO] tweaked toml for git repo https://github.com/shunak/exercise-html written to /workspace/builds/worker-19/source/Cargo.toml
[INFO] crate git repo https://github.com/shunak/exercise-html already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 03a048cd014d07fe46f79f2b13623ac348bb4c0677306cfce353a8dff66803d1
[INFO] running `Command { std: "docker" "start" "-a" "03a048cd014d07fe46f79f2b13623ac348bb4c0677306cfce353a8dff66803d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03a048cd014d07fe46f79f2b13623ac348bb4c0677306cfce353a8dff66803d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03a048cd014d07fe46f79f2b13623ac348bb4c0677306cfce353a8dff66803d1", kill_on_drop: false }`
[INFO] [stdout] 03a048cd014d07fe46f79f2b13623ac348bb4c0677306cfce353a8dff66803d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 00746fa73d7de20cf9b43f27d3dfdb3dba625352d37b20f6c716da42dbcd9b97
[INFO] running `Command { std: "docker" "start" "-a" "00746fa73d7de20cf9b43f27d3dfdb3dba625352d37b20f6c716da42dbcd9b97", 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: unused imports: `StreamError`, `StringStreamError`, `attempt`
[INFO] [stdout]  --> src/html.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     attempt,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 5 |     error::{StreamError, StringStreamError},
[INFO] [stdout]   |             ^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 57 |     (char(' ')).map(|_| ("".to_string(), AttrMap::new()))
[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:67:5
[INFO] [stdout]    |
[INFO] [stdout] 66 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 67 |     (char(' ')).map(|_| ("".to_string()))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 77 |     (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:87:5
[INFO] [stdout]    |
[INFO] [stdout] 86 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 87 |     (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:97:5
[INFO] [stdout]    |
[INFO] [stdout] 96 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 97 |     (char(' ')).map(|_| Element::new("".into(), AttrMap::new(), vec![]))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `attribute`
[INFO] [stdout]   --> src/html.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | 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 is never used: `attributes`
[INFO] [stdout]   --> src/html.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn attributes<Input>() -> impl Parser<Input, Output = AttrMap>
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `open_tag`
[INFO] [stdout]   --> src/html.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn open_tag<Input>() -> impl Parser<Input, Output = (String, AttrMap)>
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `close_tag`
[INFO] [stdout]   --> src/html.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn close_tag<Input>() -> impl Parser<Input, Output = String>
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `text`
[INFO] [stdout]   --> src/html.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn text<Input>() -> impl Parser<Input, Output = Box<Node>>
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `element`
[INFO] [stdout]   --> src/html.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn element<Input>() -> impl Parser<Input, Output = Box<Node>>
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.92s
[INFO] running `Command { std: "docker" "inspect" "00746fa73d7de20cf9b43f27d3dfdb3dba625352d37b20f6c716da42dbcd9b97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00746fa73d7de20cf9b43f27d3dfdb3dba625352d37b20f6c716da42dbcd9b97", kill_on_drop: false }`
[INFO] [stdout] 00746fa73d7de20cf9b43f27d3dfdb3dba625352d37b20f6c716da42dbcd9b97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 264054be71ae879386c87e8fbe2da0647ad8ff3c17733937cf1fbb21cb11ed34
[INFO] running `Command { std: "docker" "start" "-a" "264054be71ae879386c87e8fbe2da0647ad8ff3c17733937cf1fbb21cb11ed34", kill_on_drop: false }`
[INFO] [stdout] warning: unused imports: `StreamError`, `StringStreamError`, `attempt`
[INFO] [stdout]  --> src/html.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     attempt,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 5 |     error::{StreamError, StringStreamError},
[INFO] [stdout]   |             ^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 57 |     (char(' ')).map(|_| ("".to_string(), AttrMap::new()))
[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:67:5
[INFO] [stdout]    |
[INFO] [stdout] 66 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 67 |     (char(' ')).map(|_| ("".to_string()))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 77 |     (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:87:5
[INFO] [stdout]    |
[INFO] [stdout] 86 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 87 |     (char(' ')).map(|_| 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:97:5
[INFO] [stdout]    |
[INFO] [stdout] 96 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 97 |     (char(' ')).map(|_| Element::new("".into(), AttrMap::new(), vec![]))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `attribute`
[INFO] [stdout]   --> src/html.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | 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 is never used: `attributes`
[INFO] [stdout]   --> src/html.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn attributes<Input>() -> impl Parser<Input, Output = AttrMap>
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `open_tag`
[INFO] [stdout]   --> src/html.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn open_tag<Input>() -> impl Parser<Input, Output = (String, AttrMap)>
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `close_tag`
[INFO] [stdout]   --> src/html.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn close_tag<Input>() -> impl Parser<Input, Output = String>
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `text`
[INFO] [stdout]   --> src/html.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn text<Input>() -> impl Parser<Input, Output = Box<Node>>
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `element`
[INFO] [stdout]   --> src/html.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn element<Input>() -> impl Parser<Input, Output = Box<Node>>
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `StreamError`, `StringStreamError`, `attempt`
[INFO] [stdout]  --> src/html.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     attempt,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 5 |     error::{StreamError, StringStreamError},
[INFO] [stdout]   |             ^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 57 |     (char(' ')).map(|_| ("".to_string(), AttrMap::new()))
[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:67:5
[INFO] [stdout]    |
[INFO] [stdout] 66 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 67 |     (char(' ')).map(|_| ("".to_string()))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/html.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 77 |     (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:87:5
[INFO] [stdout]    |
[INFO] [stdout] 86 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 87 |     (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:97:5
[INFO] [stdout]    |
[INFO] [stdout] 96 |     todo!("you need to implement this combinator");
[INFO] [stdout]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 97 |     (char(' ')).map(|_| Element::new("".into(), AttrMap::new(), vec![]))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `open_tag`
[INFO] [stdout]   --> src/html.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn open_tag<Input>() -> impl Parser<Input, Output = (String, AttrMap)>
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `close_tag`
[INFO] [stdout]   --> src/html.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn close_tag<Input>() -> impl Parser<Input, Output = String>
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `text`
[INFO] [stdout]   --> src/html.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn text<Input>() -> impl Parser<Input, Output = Box<Node>>
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `element`
[INFO] [stdout]   --> src/html.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn element<Input>() -> impl Parser<Input, Output = Box<Node>>
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.06s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/exercise_html-6f3b213ebfd2e1d7)
[INFO] running `Command { std: "docker" "inspect" "264054be71ae879386c87e8fbe2da0647ad8ff3c17733937cf1fbb21cb11ed34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "264054be71ae879386c87e8fbe2da0647ad8ff3c17733937cf1fbb21cb11ed34", kill_on_drop: false }`
[INFO] [stdout] 264054be71ae879386c87e8fbe2da0647ad8ff3c17733937cf1fbb21cb11ed34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 891da552eb34ed29148d77d4d3ae994d681c4ee1101e8b355ae5ca7c84240db9
[INFO] running `Command { std: "docker" "start" "-a" "891da552eb34ed29148d77d4d3ae994d681c4ee1101e8b355ae5ca7c84240db9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused imports: `StreamError`, `StringStreamError`, `attempt`
[INFO] [stderr]  --> src/html.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     attempt,
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 5 |     error::{StreamError, StringStreamError},
[INFO] [stderr]   |             ^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/html.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     todo!("you need to implement this combinator");
[INFO] [stderr]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stderr] 57 |     (char(' ')).map(|_| ("".to_string(), AttrMap::new()))
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/html.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     todo!("you need to implement this combinator");
[INFO] [stderr]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stderr] 67 |     (char(' ')).map(|_| ("".to_string()))
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/html.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     todo!("you need to implement this combinator");
[INFO] [stderr]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stderr] 77 |     (char(' ')).map(|_| vec![Element::new("".into(), AttrMap::new(), vec![])])
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/html.rs:87:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     todo!("you need to implement this combinator");
[INFO] [stderr]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stderr] 87 |     (char(' ')).map(|_| Element::new("".into(), AttrMap::new(), vec![]))
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/html.rs:97:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     todo!("you need to implement this combinator");
[INFO] [stderr]    |     ---------------------------------------------- any code following this expression is unreachable
[INFO] [stderr] 97 |     (char(' ')).map(|_| Element::new("".into(), AttrMap::new(), vec![]))
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `attribute`
[INFO] [stderr]   --> src/html.rs:17:4
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn attribute<Input>() -> impl Parser<Input, Output = (String, String)>
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `attributes`
[INFO] [stderr]   --> src/html.rs:35:4
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn attributes<Input>() -> impl Parser<Input, Output = AttrMap>
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `open_tag`
[INFO] [stderr]   --> src/html.rs:51:4
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn open_tag<Input>() -> impl Parser<Input, Output = (String, AttrMap)>
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `close_tag`
[INFO] [stderr]   --> src/html.rs:61:4
[INFO] [stderr]    |
[INFO] [stderr] 61 | fn close_tag<Input>() -> impl Parser<Input, Output = String>
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `text`
[INFO] [stderr]   --> src/html.rs:81:4
[INFO] [stderr]    |
[INFO] [stderr] 81 | fn text<Input>() -> impl Parser<Input, Output = Box<Node>>
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `element`
[INFO] [stderr]   --> src/html.rs:91:4
[INFO] [stderr]    |
[INFO] [stderr] 91 | fn element<Input>() -> impl Parser<Input, Output = Box<Node>>
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `exercise-html` (lib) generated 12 warnings
[INFO] [stderr] warning: function is never used: `open_tag`
[INFO] [stderr]   --> src/html.rs:51:4
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn open_tag<Input>() -> impl Parser<Input, Output = (String, AttrMap)>
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `exercise-html` (lib test) generated 10 warnings (9 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/exercise_html-6f3b213ebfd2e1d7)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test html::tests::test_parse_attribute ... ok
[INFO] [stdout] test html::tests::test_parse_attributes ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests exercise-html
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "891da552eb34ed29148d77d4d3ae994d681c4ee1101e8b355ae5ca7c84240db9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "891da552eb34ed29148d77d4d3ae994d681c4ee1101e8b355ae5ca7c84240db9", kill_on_drop: false }`
[INFO] [stdout] 891da552eb34ed29148d77d4d3ae994d681c4ee1101e8b355ae5ca7c84240db9