[INFO] updating cached repository https://github.com/willcassella/rusterizer
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d8b955f206471f613357c82db394ea7410ddaa59
[INFO] checking willcassella/rusterizer against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillcassella%2Frusterizer" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/willcassella/rusterizer on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/willcassella/rusterizer
[INFO] finished tweaking git repo https://github.com/willcassella/rusterizer
[INFO] tweaked toml for git repo https://github.com/willcassella/rusterizer written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/willcassella/rusterizer already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "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] 5b48ff2af5af42c04ece161c8948eb6c8d2a384ca4e31ffbdc990799f7d131ba
[INFO] running `"docker" "start" "-a" "5b48ff2af5af42c04ece161c8948eb6c8d2a384ca4e31ffbdc990799f7d131ba"`
[INFO] [stderr]     Checking num-integer v0.1.36
[INFO] [stderr]     Checking rayon v1.0.1
[INFO] [stderr]     Checking num-iter v0.1.35
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking png v0.11.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.14
[INFO] [stderr]     Checking image v0.18.0
[INFO] [stderr]     Checking rusterizer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/strider/mod.rs:41:27
[INFO] [stderr]    |
[INFO] [stderr] 41 |     fn next(&mut self) -> Option<Self::Item> {
[INFO] [stderr]    |        ----               ^^^^^^^^^^^^^^^^^^ expected enum `std::option::Option`, found `()`
[INFO] [stderr]    |        |
[INFO] [stderr]    |        implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stderr]    |
[INFO] [stderr]    = note:   expected enum `std::option::Option<<Types as strider::detail::type_tuple::StriderTypeTuple<'_>>::References>`
[INFO] [stderr]            found unit type `()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `rusterizer`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/strider/mod.rs:41:27
[INFO] [stderr]    |
[INFO] [stderr] 41 |     fn next(&mut self) -> Option<Self::Item> {
[INFO] [stderr]    |        ----               ^^^^^^^^^^^^^^^^^^ expected enum `std::option::Option`, found `()`
[INFO] [stderr]    |        |
[INFO] [stderr]    |        implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stderr]    |
[INFO] [stderr]    = note:   expected enum `std::option::Option<<Types as strider::detail::type_tuple::StriderTypeTuple<'_>>::References>`
[INFO] [stderr]            found unit type `()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `rusterizer`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "5b48ff2af5af42c04ece161c8948eb6c8d2a384ca4e31ffbdc990799f7d131ba"`
[INFO] running `"docker" "rm" "-f" "5b48ff2af5af42c04ece161c8948eb6c8d2a384ca4e31ffbdc990799f7d131ba"`
[INFO] [stdout] 5b48ff2af5af42c04ece161c8948eb6c8d2a384ca4e31ffbdc990799f7d131ba
