[INFO] cloning repository jimblandy/advent-of-code-2018
[INFO] running `"git" "clone" "--bare" "git://github.com/jimblandy/advent-of-code-2018.git" "work/cache/sources/gh/jimblandy/advent-of-code-2018"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/jimblandy/advent-of-code-2018'...
[INFO] running `"git" "clone" "work/cache/sources/gh/jimblandy/advent-of-code-2018" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/jimblandy/advent-of-code-2018"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/jimblandy/advent-of-code-2018'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jimblandy/advent-of-code-2018" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/jimblandy/advent-of-code-2018"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/jimblandy/advent-of-code-2018'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2a28b03cd71055ea9aabdb128c348ed1bd144f3d
[INFO] sha for GitHub repo jimblandy/advent-of-code-2018: 2a28b03cd71055ea9aabdb128c348ed1bd144f3d
[INFO] validating manifest of jimblandy/advent-of-code-2018 on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of jimblandy/advent-of-code-2018 on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing jimblandy/advent-of-code-2018
[INFO] finished frobbing jimblandy/advent-of-code-2018
[INFO] frobbed toml for jimblandy/advent-of-code-2018 written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/jimblandy/advent-of-code-2018/Cargo.toml
[INFO] started frobbing jimblandy/advent-of-code-2018
[INFO] finished frobbing jimblandy/advent-of-code-2018
[INFO] frobbed toml for jimblandy/advent-of-code-2018 written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/jimblandy/advent-of-code-2018/Cargo.toml
[INFO] crate jimblandy/advent-of-code-2018 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing jimblandy/advent-of-code-2018 against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-7/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/jimblandy/advent-of-code-2018:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"`
[INFO] [stdout] f79a0253edb897dd5b5fb4b24d2717ad53b6cbbca8d217e4649a1efc15d46e3f
[INFO] running `"docker" "start" "-a" "f79a0253edb897dd5b5fb4b24d2717ad53b6cbbca8d217e4649a1efc15d46e3f"`
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]    Compiling advent-of-code-2018 v0.1.0 (/opt/crater/workdir)
[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] error: build failed
[INFO] running `"docker" "inspect" "f79a0253edb897dd5b5fb4b24d2717ad53b6cbbca8d217e4649a1efc15d46e3f"`
[INFO] running `"docker" "rm" "-f" "f79a0253edb897dd5b5fb4b24d2717ad53b6cbbca8d217e4649a1efc15d46e3f"`
[INFO] [stdout] f79a0253edb897dd5b5fb4b24d2717ad53b6cbbca8d217e4649a1efc15d46e3f