[INFO] updating cached repository https://github.com/sumeet/aoc2019
[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] 7ffc58885f288bcb0b9f29d67d3fe9e7dfd99192
[INFO] testing sumeet/aoc2019 against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsumeet%2Faoc2019" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sumeet/aoc2019 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/sumeet/aoc2019
[INFO] finished tweaking git repo https://github.com/sumeet/aoc2019
[INFO] tweaked toml for git repo https://github.com/sumeet/aoc2019 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/sumeet/aoc2019 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.44.0" "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] 602e3a796742e73c052a43493aa158ad36fa5e5ce82e9bdb2ac01ee0d2b1a6c6
[INFO] running `"docker" "start" "-a" "602e3a796742e73c052a43493aa158ad36fa5e5ce82e9bdb2ac01ee0d2b1a6c6"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling serde v1.0.103
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling rayon-core v1.6.1
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling gen-iter v0.1.2 (https://github.com/sumeet/gen-iter#ba1464de)
[INFO] [stderr]    Compiling defaultmap v0.4.0
[INFO] [stderr]    Compiling aoc-runner v0.2.2
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling float-cmp v0.6.0
[INFO] [stderr]    Compiling crossbeam-channel v0.4.0
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]   --> /opt/rustwide/cargo-home/git/checkouts/gen-iter-6e1508ce9b01d1b3/ba1464d/src/lib.rs:36:1
[INFO] [stderr]    |
[INFO] [stderr] 36 | #![feature(generators, generator_trait)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0061]: this function takes 1 argument but 0 arguments were supplied
[INFO] [stderr]   --> /opt/rustwide/cargo-home/git/checkouts/gen-iter-6e1508ce9b01d1b3/ba1464d/src/lib.rs:59:37
[INFO] [stderr]    |
[INFO] [stderr] 59 |         match Pin::new(&mut self.0).resume() {
[INFO] [stderr]    |                                     ^^^^^^- supplied 0 arguments
[INFO] [stderr]    |
[INFO] [stderr] help: expected the unit value `()`; create it with empty parentheses
[INFO] [stderr]    |
[INFO] [stderr] 59 |         match Pin::new(&mut self.0).resume(()) {
[INFO] [stderr]    |                                            ^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0061, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0061`.
[INFO] [stderr] error: could not compile `gen-iter`.
[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: build failed
[INFO] running `"docker" "inspect" "602e3a796742e73c052a43493aa158ad36fa5e5ce82e9bdb2ac01ee0d2b1a6c6"`
[INFO] running `"docker" "rm" "-f" "602e3a796742e73c052a43493aa158ad36fa5e5ce82e9bdb2ac01ee0d2b1a6c6"`
[INFO] [stdout] 602e3a796742e73c052a43493aa158ad36fa5e5ce82e9bdb2ac01ee0d2b1a6c6