[INFO] cloning repository https://github.com/ajnsit/concurse
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ajnsit/concurse" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajnsit%2Fconcurse", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajnsit%2Fconcurse'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4a7a87fe1ccdb3e8f056b45daa326a65f95f6fa3
[INFO] testing ajnsit/concurse against 1.85.0 for beta-1.86-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajnsit%2Fconcurse" "/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/ajnsit/concurse on toolchain 1.85.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.85.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ajnsit/concurse
[INFO] finished tweaking git repo https://github.com/ajnsit/concurse
[INFO] tweaked toml for git repo https://github.com/ajnsit/concurse written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ajnsit/concurse 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" "+1.85.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded do-notation v0.1.3
[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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+1.85.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc53ee1a3fa6a530225dd721c68f2729a4dbb9fbe54e6fdec4a301172250c3e1
[INFO] running `Command { std: "docker" "start" "-a" "dc53ee1a3fa6a530225dd721c68f2729a4dbb9fbe54e6fdec4a301172250c3e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc53ee1a3fa6a530225dd721c68f2729a4dbb9fbe54e6fdec4a301172250c3e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc53ee1a3fa6a530225dd721c68f2729a4dbb9fbe54e6fdec4a301172250c3e1", kill_on_drop: false }`
[INFO] [stdout] dc53ee1a3fa6a530225dd721c68f2729a4dbb9fbe54e6fdec4a301172250c3e1
[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=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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+1.85.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e2ffd0ec0cbde43c9611bafb9bde3b3828b548bcc2dc1d9f041102fa3f43a58
[INFO] running `Command { std: "docker" "start" "-a" "1e2ffd0ec0cbde43c9611bafb9bde3b3828b548bcc2dc1d9f041102fa3f43a58", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.83
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling bumpalo v3.11.1
[INFO] [stderr]    Compiling once_cell v1.16.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.83
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling do-notation v0.1.3
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.83
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.83
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.83
[INFO] [stderr]    Compiling js-sys v0.3.60
[INFO] [stderr]    Compiling web-sys v0.3.60
[INFO] [stderr]    Compiling concurse v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `window` is never read
[INFO] [stdout]  --> src/host.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub(crate) struct Host {
[INFO] [stdout]   |                   ---- field in this struct
[INFO] [stdout] 5 |     pub(crate) window: Window,
[INFO] [stdout]   |                ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `insert_child_before` and `has_attribute` are never used
[INFO] [stdout]   --> src/host.rs:58:19
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl Node {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 58 |     pub(crate) fn insert_child_before(&self, existing: &Node, child: &Node) {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     pub(crate) fn has_attribute(&self, key: &str) -> bool {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `build` and `halt` are never used
[INFO] [stdout]  --> src/machine.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) trait Machine {
[INFO] [stdout]   |                  ------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 4 |     fn build(&mut self, i: Self::I);
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 5 |     fn step(&mut self, i: Self::I);
[INFO] [stdout] 6 |     fn halt(self);
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `StringAttr` is never constructed
[INFO] [stdout]  --> src/vdom.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub(crate) enum Attr<L> {
[INFO] [stdout]   |                 ---- variant in this enum
[INFO] [stdout] 9 |     StringAttr(String),
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     test("Mr. Bond");
[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] 19 |     let _ = test("Mr. Bond");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/host.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         self.body.append_child(&node.element);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let _ = self.body.append_child(&node.element);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/host.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |         self.element.append_child(&child.element);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let _ = self.element.append_child(&child.element);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/host.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 | /         self.element
[INFO] [stdout] 60 | |             .insert_before(&existing.element, Some(&child.element));
[INFO] [stdout]    | |___________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let _ = self.element
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/host.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         self.element.remove_child(&child.element);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 63 |         let _ = self.element.remove_child(&child.element);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/host.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |         self.element.set_attribute(key, val);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let _ = self.element.set_attribute(key, val);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/host.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         self.element.remove_attribute(key);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 73 |         let _ = self.element.remove_attribute(key);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.75s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.83
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "1e2ffd0ec0cbde43c9611bafb9bde3b3828b548bcc2dc1d9f041102fa3f43a58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e2ffd0ec0cbde43c9611bafb9bde3b3828b548bcc2dc1d9f041102fa3f43a58", kill_on_drop: false }`
[INFO] [stdout] 1e2ffd0ec0cbde43c9611bafb9bde3b3828b548bcc2dc1d9f041102fa3f43a58
[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=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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+1.85.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3d935572470ab7657d7f26b1b74738139477d3ab5f393cd5ff228a08fcd4a0a
[INFO] running `Command { std: "docker" "start" "-a" "b3d935572470ab7657d7f26b1b74738139477d3ab5f393cd5ff228a08fcd4a0a", kill_on_drop: false }`
[INFO] [stderr]    Compiling concurse v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `window` is never read
[INFO] [stdout]  --> src/host.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub(crate) struct Host {
[INFO] [stdout]   |                   ---- field in this struct
[INFO] [stdout] 5 |     pub(crate) window: Window,
[INFO] [stdout]   |                ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `insert_child_before` and `has_attribute` are never used
[INFO] [stdout]   --> src/host.rs:58:19
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl Node {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 58 |     pub(crate) fn insert_child_before(&self, existing: &Node, child: &Node) {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     pub(crate) fn has_attribute(&self, key: &str) -> bool {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `build` and `halt` are never used
[INFO] [stdout]  --> src/machine.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) trait Machine {
[INFO] [stdout]   |                  ------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 4 |     fn build(&mut self, i: Self::I);
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 5 |     fn step(&mut self, i: Self::I);
[INFO] [stdout] 6 |     fn halt(self);
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `StringAttr` is never constructed
[INFO] [stdout]  --> src/vdom.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub(crate) enum Attr<L> {
[INFO] [stdout]   |                 ---- variant in this enum
[INFO] [stdout] 9 |     StringAttr(String),
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     test("Mr. Bond");
[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] 19 |     let _ = test("Mr. Bond");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/host.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         self.body.append_child(&node.element);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let _ = self.body.append_child(&node.element);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/host.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |         self.element.append_child(&child.element);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let _ = self.element.append_child(&child.element);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/host.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 | /         self.element
[INFO] [stdout] 60 | |             .insert_before(&existing.element, Some(&child.element));
[INFO] [stdout]    | |___________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let _ = self.element
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/host.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         self.element.remove_child(&child.element);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 63 |         let _ = self.element.remove_child(&child.element);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/host.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |         self.element.set_attribute(key, val);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let _ = self.element.set_attribute(key, val);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/host.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         self.element.remove_attribute(key);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 73 |         let _ = self.element.remove_attribute(key);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.56s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.83
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "b3d935572470ab7657d7f26b1b74738139477d3ab5f393cd5ff228a08fcd4a0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3d935572470ab7657d7f26b1b74738139477d3ab5f393cd5ff228a08fcd4a0a", kill_on_drop: false }`
[INFO] [stdout] b3d935572470ab7657d7f26b1b74738139477d3ab5f393cd5ff228a08fcd4a0a
[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=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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+1.85.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 41f18abc3e9ee0f3e0b69e11c281c90c46576e6ce13d9d819b60f57c2958c92c
[INFO] running `Command { std: "docker" "start" "-a" "41f18abc3e9ee0f3e0b69e11c281c90c46576e6ce13d9d819b60f57c2958c92c", kill_on_drop: false }`
[INFO] [stderr] warning: field `window` is never read
[INFO] [stderr]  --> src/host.rs:5:16
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub(crate) struct Host {
[INFO] [stderr]   |                   ---- field in this struct
[INFO] [stderr] 5 |     pub(crate) window: Window,
[INFO] [stderr]   |                ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: methods `insert_child_before` and `has_attribute` are never used
[INFO] [stderr]   --> src/host.rs:58:19
[INFO] [stderr]    |
[INFO] [stderr] 51 | impl Node {
[INFO] [stderr]    | --------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 58 |     pub(crate) fn insert_child_before(&self, existing: &Node, child: &Node) {
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 75 |     pub(crate) fn has_attribute(&self, key: &str) -> bool {
[INFO] [stderr]    |                   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `build` and `halt` are never used
[INFO] [stderr]  --> src/machine.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub(crate) trait Machine {
[INFO] [stderr]   |                  ------- methods in this trait
[INFO] [stderr] ...
[INFO] [stderr] 4 |     fn build(&mut self, i: Self::I);
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 5 |     fn step(&mut self, i: Self::I);
[INFO] [stderr] 6 |     fn halt(self);
[INFO] [stderr]   |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant `StringAttr` is never constructed
[INFO] [stderr]  --> src/vdom.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub(crate) enum Attr<L> {
[INFO] [stderr]   |                 ---- variant in this enum
[INFO] [stderr] 9 |     StringAttr(String),
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/lib.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     test("Mr. Bond");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let _ = test("Mr. Bond");
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/host.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 |         self.body.append_child(&node.element);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 38 |         let _ = self.body.append_child(&node.element);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/host.rs:56:9
[INFO] [stderr]    |
[INFO] [stderr] 56 |         self.element.append_child(&child.element);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 56 |         let _ = self.element.append_child(&child.element);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/host.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 | /         self.element
[INFO] [stderr] 60 | |             .insert_before(&existing.element, Some(&child.element));
[INFO] [stderr]    | |___________________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 59 |         let _ = self.element
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/host.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |         self.element.remove_child(&child.element);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 63 |         let _ = self.element.remove_child(&child.element);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/host.rs:70:9
[INFO] [stderr]    |
[INFO] [stderr] 70 |         self.element.set_attribute(key, val);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 70 |         let _ = self.element.set_attribute(key, val);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/host.rs:73:9
[INFO] [stderr]    |
[INFO] [stderr] 73 |         self.element.remove_attribute(key);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 73 |         let _ = self.element.remove_attribute(key);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `concurse` (lib test) generated 11 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.83
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/concurse-aa2439701565c76c)
[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" "41f18abc3e9ee0f3e0b69e11c281c90c46576e6ce13d9d819b60f57c2958c92c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41f18abc3e9ee0f3e0b69e11c281c90c46576e6ce13d9d819b60f57c2958c92c", kill_on_drop: false }`
[INFO] [stdout] 41f18abc3e9ee0f3e0b69e11c281c90c46576e6ce13d9d819b60f57c2958c92c