Dec 02 14:50:48.625 INFO testing syscall-alt-0.0.14 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 14:50:48.625 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-2/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/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 14:50:48.839 INFO [stdout] 6bce3f28f09b46fbc72914cab698a361b4e90dd0ef5d67aee606a45e0547dc9f
Dec 02 14:50:48.844 INFO running `"docker" "start" "-a" "6bce3f28f09b46fbc72914cab698a361b4e90dd0ef5d67aee606a45e0547dc9f"`
Dec 02 14:50:49.246 INFO [stderr] usermod: no changes
Dec 02 14:50:49.272 INFO [stderr]    Compiling syscall-alt v0.0.14 (/source)
Dec 02 14:50:49.495 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 14:50:49.495 INFO [stderr]  --> src/lib.rs:7:1
Dec 02 14:50:49.495 INFO [stderr]   |
Dec 02 14:50:49.495 INFO [stderr] 7 | #![feature(asm)]
Dec 02 14:50:49.495 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 02 14:50:49.495 INFO [stderr] 
Dec 02 14:50:49.495 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 14:50:49.495 INFO [stderr]  --> src/lib.rs:8:1
Dec 02 14:50:49.495 INFO [stderr]   |
Dec 02 14:50:49.495 INFO [stderr] 8 | #![feature(associated_consts)]
Dec 02 14:50:49.495 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 14:50:49.495 INFO [stderr] 
Dec 02 14:50:49.495 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 14:50:49.495 INFO [stderr]  --> src/lib.rs:9:1
Dec 02 14:50:49.495 INFO [stderr]   |
Dec 02 14:50:49.495 INFO [stderr] 9 | #![feature(const_fn)]
Dec 02 14:50:49.495 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
Dec 02 14:50:49.495 INFO [stderr] 
Dec 02 14:50:49.506 INFO [stderr] error: aborting due to 3 previous errors
Dec 02 14:50:49.506 INFO [stderr] 
Dec 02 14:50:49.506 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 14:50:49.512 INFO [stderr] error: Could not compile `syscall-alt`.
Dec 02 14:50:49.512 INFO [stderr] 
Dec 02 14:50:49.512 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 14:50:49.513 INFO [stderr] su: No module specific data is present
Dec 02 14:50:49.762 INFO running `"docker" "inspect" "6bce3f28f09b46fbc72914cab698a361b4e90dd0ef5d67aee606a45e0547dc9f"`
Dec 02 14:50:49.856 INFO running `"docker" "rm" "-f" "6bce3f28f09b46fbc72914cab698a361b4e90dd0ef5d67aee606a45e0547dc9f"`
Dec 02 14:50:49.948 INFO [stdout] 6bce3f28f09b46fbc72914cab698a361b4e90dd0ef5d67aee606a45e0547dc9f