[INFO] updating cached repository CraZySacX/aoc
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/CraZySacX/aoc
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/CraZySacX/aoc" "work/ex/beta-1.38-1/sources/1.37.0/gh/CraZySacX/aoc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/CraZySacX/aoc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/CraZySacX/aoc" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CraZySacX/aoc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CraZySacX/aoc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d3e9eb3ccd9345f77f925abbaf5f8bd62d283afa
[INFO] sha for GitHub repo CraZySacX/aoc: d3e9eb3ccd9345f77f925abbaf5f8bd62d283afa
[INFO] validating manifest of CraZySacX/aoc on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of CraZySacX/aoc on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing CraZySacX/aoc
[INFO] finished frobbing CraZySacX/aoc
[INFO] frobbed toml for CraZySacX/aoc written to work/ex/beta-1.38-1/sources/1.37.0/gh/CraZySacX/aoc/Cargo.toml
[INFO] started frobbing CraZySacX/aoc
[INFO] finished frobbing CraZySacX/aoc
[INFO] frobbed toml for CraZySacX/aoc written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CraZySacX/aoc/Cargo.toml
[INFO] crate CraZySacX/aoc already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing CraZySacX/aoc against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/CraZySacX/aoc:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 24a7ce4f3a57becbb86fba01212ca4d300a330435fe1b5694ce658dba7058f31
[INFO] running `"docker" "start" "-a" "24a7ce4f3a57becbb86fba01212ca4d300a330435fe1b5694ce658dba7058f31"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling hamming v0.1.3
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling syn v0.15.35
[INFO] [stderr]    Compiling primal-estimate v0.2.1
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]    Compiling sliding_windows v3.0.0
[INFO] [stderr]    Compiling bytecount v0.5.1
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling backtrace v0.3.30
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling primal-bit v0.2.4
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling primal-sieve v0.2.9
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling primal-check v0.2.3
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling primal v0.2.3
[INFO] [stderr]    Compiling pathfinding v0.8.2
[INFO] [stderr]    Compiling getset v0.0.7
[INFO] [stderr]    Compiling aoc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]   --> src/main.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | #![feature(try_from)]
[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 E0554`.
[INFO] [stderr] error: Could not compile `aoc`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "24a7ce4f3a57becbb86fba01212ca4d300a330435fe1b5694ce658dba7058f31"`
[INFO] running `"docker" "rm" "-f" "24a7ce4f3a57becbb86fba01212ca4d300a330435fe1b5694ce658dba7058f31"`
[INFO] [stdout] 24a7ce4f3a57becbb86fba01212ca4d300a330435fe1b5694ce658dba7058f31