[INFO] fetching crate confusion 0.0.1...
[INFO] testing confusion-0.0.1 against 1.75.0 for beta-1.76-1
[INFO] extracting crate confusion 0.0.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate confusion 0.0.1 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate confusion 0.0.1
[INFO] finished tweaking crates.io crate confusion 0.0.1
[INFO] tweaked toml for crates.io crate confusion 0.0.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (nickel) specified without providing a local path, Git repository, version, or workspace dependency to use. This will be considered an error in future versions
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded plugin v0.2.6
[INFO] [stderr]   Downloaded typemap v0.3.3
[INFO] [stderr]   Downloaded modifier v0.1.0
[INFO] [stderr]   Downloaded unsafe-any v0.4.2
[INFO] [stderr]   Downloaded groupable v0.2.0
[INFO] [stderr]   Downloaded mustache v0.9.0
[INFO] [stderr]   Downloaded nickel v0.11.0
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d8cff370a49631c5ff8c1b06def05356e065eb1ba97ad34064ea27bcd82d49d4
[INFO] running `Command { std: "docker" "start" "-a" "d8cff370a49631c5ff8c1b06def05356e065eb1ba97ad34064ea27bcd82d49d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8cff370a49631c5ff8c1b06def05356e065eb1ba97ad34064ea27bcd82d49d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8cff370a49631c5ff8c1b06def05356e065eb1ba97ad34064ea27bcd82d49d4", kill_on_drop: false }`
[INFO] [stdout] d8cff370a49631c5ff8c1b06def05356e065eb1ba97ad34064ea27bcd82d49d4
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c6b31974b7f8b5d051c0a236a4f9203c9b412a25f5b90694d4297e00b0d8b546
[INFO] running `Command { std: "docker" "start" "-a" "c6b31974b7f8b5d051c0a236a4f9203c9b412a25f5b90694d4297e00b0d8b546", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (nickel) specified without providing a local path, Git repository, version, or workspace dependency to use. This will be considered an error in future versions
[INFO] [stderr]    Compiling serde v1.0.194
[INFO] [stderr]    Compiling traitobject v0.1.0
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling matches v0.1.10
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling unicode-bidi v0.3.14
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling unsafe-any v0.4.2
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling safemem v0.3.3
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling typemap v0.3.3
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling time v0.1.45
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling typeable v0.1.2
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling plugin v0.2.6
[INFO] [stderr]    Compiling modifier v0.1.0
[INFO] [stderr]    Compiling groupable v0.2.0
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stderr]    Compiling mustache v0.9.0
[INFO] [stderr]    Compiling serde_json v1.0.111
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]    Compiling nickel v0.11.0
[INFO] [stderr]    Compiling confusion v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:9:19
[INFO] [stdout]    |
[INFO] [stdout] 9  |     server.get("/", middleware! { |_request, response|
[INFO] [stdout]    |  ___________________^
[INFO] [stdout] 10 | |     return response.send_file(&Path::new("frontend/setup.html"))
[INFO] [stdout]    | |     ------------------------------------------------------------ any code following this expression is unreachable
[INFO] [stdout] 11 | |   });
[INFO] [stdout]    | |___^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `_middleware_inner` which comes from the expansion of the macro `middleware` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:13:3
[INFO] [stdout]    |
[INFO] [stdout] 6  | fn main() {
[INFO] [stdout]    |          - expected `()` because of default return type
[INFO] [stdout] ...
[INFO] [stdout] 13 |   server.listen("127.0.0.1:3000")
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^- help: consider using a semicolon here: `;`
[INFO] [stdout]    |   |
[INFO] [stdout]    |   expected `()`, found `Result<ListeningServer, Box<...>>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected unit type `()`
[INFO] [stdout]                    found enum `Result<ListeningServer, std::boxed::Box<(dyn std::error::Error + 'static)>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `confusion` (bin "confusion") due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "c6b31974b7f8b5d051c0a236a4f9203c9b412a25f5b90694d4297e00b0d8b546", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6b31974b7f8b5d051c0a236a4f9203c9b412a25f5b90694d4297e00b0d8b546", kill_on_drop: false }`
[INFO] [stdout] c6b31974b7f8b5d051c0a236a4f9203c9b412a25f5b90694d4297e00b0d8b546
