[INFO] fetching crate confusion 0.0.1... [INFO] testing confusion-0.0.1 against beta-2020-06-03 for beta-1.45-1 [INFO] extracting crate confusion 0.0.1 into /workspace/builds/worker-8/source [INFO] validating manifest of crates.io crate confusion 0.0.1 on toolchain beta-2020-06-03 [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"` [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-8/source/Cargo.toml [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] warning: dependency (nickel) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 138fb88301d35c0eb35a51d656bfd97752e9829f225007be9524943e8db2e585 [INFO] running `"docker" "start" "-a" "138fb88301d35c0eb35a51d656bfd97752e9829f225007be9524943e8db2e585"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] warning: dependency (nickel) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling matches v0.1.8 [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Compiling traitobject v0.1.0 [INFO] [stderr] Compiling serde v1.0.111 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling smallvec v1.4.0 [INFO] [stderr] Compiling httparse v1.3.4 [INFO] [stderr] Compiling percent-encoding v1.0.1 [INFO] [stderr] Compiling safemem v0.3.3 [INFO] [stderr] Compiling regex-syntax v0.6.18 [INFO] [stderr] Compiling language-tags v0.2.2 [INFO] [stderr] Compiling typeable v0.1.2 [INFO] [stderr] Compiling groupable v0.2.0 [INFO] [stderr] Compiling modifier v0.1.0 [INFO] [stderr] Compiling thread_local v1.0.1 [INFO] [stderr] Compiling unsafe-any v0.4.2 [INFO] [stderr] Compiling unicode-bidi v0.3.4 [INFO] [stderr] Compiling typemap v0.3.3 [INFO] [stderr] Compiling num_cpus v1.13.0 [INFO] [stderr] Compiling plugin v0.2.6 [INFO] [stderr] Compiling unicode-normalization v0.1.12 [INFO] [stderr] Compiling log v0.3.9 [INFO] [stderr] Compiling aho-corasick v0.7.10 [INFO] [stderr] Compiling unicase v1.4.2 [INFO] [stderr] Compiling mime v0.2.6 [INFO] [stderr] Compiling base64 v0.9.3 [INFO] [stderr] Compiling idna v0.1.5 [INFO] [stderr] Compiling url v1.7.2 [INFO] [stderr] Compiling hyper v0.10.16 [INFO] [stderr] Compiling regex v1.3.9 [INFO] [stderr] Compiling serde_json v1.0.53 [INFO] [stderr] Compiling mustache v0.9.0 [INFO] [stderr] Compiling nickel v0.11.0 [INFO] [stderr] Compiling confusion v0.0.1 (/opt/rustwide/workdir) [INFO] [stderr] warning: unreachable expression [INFO] [stderr] --> src/main.rs:9:19 [INFO] [stderr] | [INFO] [stderr] 9 | server.get("/", middleware! { |_request, response| [INFO] [stderr] | ___________________^ [INFO] [stderr] 10 | | return response.send_file(&Path::new("frontend/setup.html")) [INFO] [stderr] | | ------------------------------------------------------------ any code following this expression is unreachable [INFO] [stderr] 11 | | }); [INFO] [stderr] | |___^ unreachable expression [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` on by default [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] error[E0308]: mismatched types [INFO] [stderr] --> src/main.rs:13:3 [INFO] [stderr] | [INFO] [stderr] 6 | fn main() { [INFO] [stderr] | - expected `()` because of default return type [INFO] [stderr] ... [INFO] [stderr] 13 | server.listen("127.0.0.1:3000") [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^- help: try adding a semicolon: `;` [INFO] [stderr] | | [INFO] [stderr] | expected `()`, found enum `std::result::Result` [INFO] [stderr] | [INFO] [stderr] = note: expected unit type `()` [INFO] [stderr] found enum `std::result::Result>` [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error; 1 warning emitted [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0308`. [INFO] [stderr] error: could not compile `confusion`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "138fb88301d35c0eb35a51d656bfd97752e9829f225007be9524943e8db2e585"` [INFO] running `"docker" "rm" "-f" "138fb88301d35c0eb35a51d656bfd97752e9829f225007be9524943e8db2e585"` [INFO] [stdout] 138fb88301d35c0eb35a51d656bfd97752e9829f225007be9524943e8db2e585