Dec 02 06:56:33.212 INFO testing IcyDefiance/euler_solutions against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 06:56:33.212 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 06:56:33.604 INFO [stdout] 2711e41ee8ddbd217ae31ceb532ef9d5ed1ed5b3854329beaec1e92dc88675ba
Dec 02 06:56:33.608 INFO running `"docker" "start" "-a" "2711e41ee8ddbd217ae31ceb532ef9d5ed1ed5b3854329beaec1e92dc88675ba"`
Dec 02 06:56:34.851 INFO [stderr] usermod: no changes
Dec 02 06:56:35.033 INFO [stderr]    Compiling fine_grained v0.1.2
Dec 02 06:56:35.039 INFO [stderr]    Compiling primal-sieve v0.2.7
Dec 02 06:56:35.039 INFO [stderr]    Compiling primal-check v0.2.2
Dec 02 06:56:38.330 INFO [stderr]    Compiling primal v0.2.3
Dec 02 06:56:39.323 INFO [stderr]    Compiling euler_solutions v0.1.0 (/source)
Dec 02 06:56:40.415 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 06:56:40.415 INFO [stderr]  --> src/main.rs:1:1
Dec 02 06:56:40.415 INFO [stderr]   |
Dec 02 06:56:40.415 INFO [stderr] 1 | #![feature(iterator_step_by)]
Dec 02 06:56:40.415 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 06:56:40.415 INFO [stderr] 
Dec 02 06:56:40.415 INFO [stderr] error: aborting due to previous error
Dec 02 06:56:40.415 INFO [stderr] 
Dec 02 06:56:40.415 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 06:56:40.424 INFO [stderr] error: Could not compile `euler_solutions`.
Dec 02 06:56:40.424 INFO [stderr] 
Dec 02 06:56:40.424 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 06:56:40.425 INFO [stderr] su: No module specific data is present
Dec 02 06:56:40.720 INFO running `"docker" "inspect" "2711e41ee8ddbd217ae31ceb532ef9d5ed1ed5b3854329beaec1e92dc88675ba"`
Dec 02 06:56:40.845 INFO running `"docker" "rm" "-f" "2711e41ee8ddbd217ae31ceb532ef9d5ed1ed5b3854329beaec1e92dc88675ba"`
Dec 02 06:56:40.993 INFO [stdout] 2711e41ee8ddbd217ae31ceb532ef9d5ed1ed5b3854329beaec1e92dc88675ba