[INFO] updating cached repository https://github.com/jimblandy/advent-of-code-2018
[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] 2a28b03cd71055ea9aabdb128c348ed1bd144f3d
[INFO] checking jimblandy/advent-of-code-2018 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjimblandy%2Fadvent-of-code-2018" "/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/jimblandy/advent-of-code-2018 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jimblandy/advent-of-code-2018
[INFO] finished tweaking git repo https://github.com/jimblandy/advent-of-code-2018
[INFO] tweaked toml for git repo https://github.com/jimblandy/advent-of-code-2018 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/jimblandy/advent-of-code-2018 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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" "+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] 3ba7b03b52cfe7347c26683df02e3cec8326bf66dceea774f0c07ffba82b1863
[INFO] running `"docker" "start" "-a" "3ba7b03b52cfe7347c26683df02e3cec8326bf66dceea774f0c07ffba82b1863"`
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking ndarray v0.12.1
[INFO] [stderr]     Checking advent-of-code-2018 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: the feature `euclidean_division` has been stable since 1.38.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/bin/day-09.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(euclidean_division)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0635]: unknown feature `iter_unfold`
[INFO] [stderr]  --> src/bin/day-22.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(iter_unfold)]
[INFO] [stderr]   |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0635`.
[INFO] [stderr] error: could not compile `advent-of-code-2018`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: the feature `range_contains` has been stable since 1.35.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/bin/day-17.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(range_contains)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `euclidean_division` has been stable since 1.38.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/bin/day-23b.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(euclidean_division)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `euclidean_division` has been stable since 1.38.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/bin/day-23b.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(euclidean_division)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0635]: unknown feature `iter_unfold`
[INFO] [stderr]  --> src/bin/day-22.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(iter_unfold)]
[INFO] [stderr]   |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0635`.
[INFO] [stderr] error: could not compile `advent-of-code-2018`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "3ba7b03b52cfe7347c26683df02e3cec8326bf66dceea774f0c07ffba82b1863"`
[INFO] running `"docker" "rm" "-f" "3ba7b03b52cfe7347c26683df02e3cec8326bf66dceea774f0c07ffba82b1863"`
[INFO] [stdout] 3ba7b03b52cfe7347c26683df02e3cec8326bf66dceea774f0c07ffba82b1863