[INFO] fetching crate ksway 0.1.0...
[INFO] checking ksway-0.1.0 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate ksway 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate ksway 0.1.0 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate ksway 0.1.0
[INFO] removed 1 missing examples
[INFO] finished tweaking crates.io crate ksway 0.1.0
[INFO] tweaked toml for crates.io crate ksway 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8c6929e24a39569a3b868415cf42b30c082f255a4af8043059fe2fee902e3171
[INFO] running `"docker" "start" "-a" "8c6929e24a39569a3b868415cf42b30c082f255a4af8043059fe2fee902e3171"`
[INFO] [stderr]    Compiling redis v0.10.0
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking globwalk v0.7.1
[INFO] [stderr]     Checking ksway v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0601]: `main` function not found in crate `utils`
[INFO] [stderr]   --> examples/utils.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / use json::JsonValue;
[INFO] [stderr] 2  | |
[INFO] [stderr] 3  | | pub fn preorder<T, F: FnMut(&JsonValue) -> Option<T>>(
[INFO] [stderr] 4  | |     value: &JsonValue,
[INFO] [stderr] ...  |
[INFO] [stderr] 42 | |     target
[INFO] [stderr] 43 | | }
[INFO] [stderr]    | |_^ consider adding a `main` function to `examples/utils.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: could not compile `ksway`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> examples/sway-focus-next.rs:19:23
[INFO] [stderr]    |
[INFO] [stderr] 19 | type Expression = Box<Fn(&JsonValue) -> bool>;
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&JsonValue) -> bool`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> examples/watch-sway-windows.rs:245:5
[INFO] [stderr]     |
[INFO] [stderr] 180 | /     loop {
[INFO] [stderr] 181 | |         while let Ok((payload_type, payload)) = rx.try_recv() {
[INFO] [stderr] 182 | |             match payload_type {
[INFO] [stderr] 183 | |                 IpcEvent::Window => {
[INFO] [stderr] ...   |
[INFO] [stderr] 243 | |         client.poll()?;
[INFO] [stderr] 244 | |     }
[INFO] [stderr]     | |_____- any code following this expression is unreachable
[INFO] [stderr] 245 |       Ok(())
[INFO] [stderr]     |       ^^^^^^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `extract_path`
[INFO] [stderr]   --> examples/utils.rs:33:1
[INFO] [stderr]    |
[INFO] [stderr] 33 | / pub fn extract_path<'a, 'b, S: AsRef<str>, I: IntoIterator<Item = S>>(
[INFO] [stderr] 34 | |     value: &'a JsonValue,
[INFO] [stderr] 35 | |     path: I,
[INFO] [stderr] 36 | | ) -> &'a JsonValue {
[INFO] [stderr] ...  |
[INFO] [stderr] 42 | |     target
[INFO] [stderr] 43 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CenterX`
[INFO] [stderr]   --> examples/watch-sway-windows.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     CenterX,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CenterY`
[INFO] [stderr]   --> examples/watch-sway-windows.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     CenterY,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "8c6929e24a39569a3b868415cf42b30c082f255a4af8043059fe2fee902e3171"`
[INFO] running `"docker" "rm" "-f" "8c6929e24a39569a3b868415cf42b30c082f255a4af8043059fe2fee902e3171"`
[INFO] [stdout] 8c6929e24a39569a3b868415cf42b30c082f255a4af8043059fe2fee902e3171