Dec 02 07:01:13.918 INFO testing Hoverbear/rust-rosetta against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 07:01:13.918 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-6/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/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 07:01:14.247 INFO [stdout] 932b54e46bd94aac8e9e8b4e48e2f437efda2aeaf3e59cc531f515e67c24447b
Dec 02 07:01:14.250 INFO running `"docker" "start" "-a" "932b54e46bd94aac8e9e8b4e48e2f437efda2aeaf3e59cc531f515e67c24447b"`
Dec 02 07:01:15.117 INFO [stderr] usermod: no changes
Dec 02 07:01:15.905 INFO [stderr]    Compiling structopt-derive v0.2.10
Dec 02 07:01:15.905 INFO [stderr]    Compiling env_logger v0.5.10
Dec 02 07:01:15.905 INFO [stderr]    Compiling tokio-fs v0.1.2
Dec 02 07:01:15.910 INFO [stderr]    Compiling error-chain v0.12.0
Dec 02 07:01:17.399 INFO [stderr]    Compiling cargo_metadata v0.6.0
Dec 02 07:01:19.659 INFO [stderr]    Compiling tokio v0.1.7
Dec 02 07:01:26.715 INFO [stderr]    Compiling tokio-core v0.1.17
Dec 02 07:01:27.379 INFO [stderr]    Compiling structopt v0.2.10
Dec 02 07:01:31.262 INFO [stderr]    Compiling tokio-proto v0.1.1
Dec 02 07:01:31.262 INFO [stderr]    Compiling tokio-tls v0.1.4
Dec 02 07:01:35.361 INFO [stderr]    Compiling hyper v0.11.27
Dec 02 07:01:44.642 INFO [stderr]    Compiling hyper-tls v0.1.3
Dec 02 07:01:47.663 INFO [stderr]    Compiling reqwest v0.8.6
Dec 02 07:01:58.435 INFO [stderr]    Compiling find-unimplemented-tasks v0.1.0 (/source/tasks/rosetta-code/find-unimplemented-tasks)
Dec 02 07:02:03.970 INFO [stderr]    Compiling meta v0.1.0 (/source/meta)
Dec 02 07:02:08.815 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 07:02:08.815 INFO [stderr]  --> meta/src/lib.rs:5:1
Dec 02 07:02:08.815 INFO [stderr]   |
Dec 02 07:02:08.815 INFO [stderr] 5 | #![feature(fs_read_write)]
Dec 02 07:02:08.815 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 07:02:08.815 INFO [stderr] 
Dec 02 07:02:08.815 INFO [stderr] error: aborting due to previous error
Dec 02 07:02:08.815 INFO [stderr] 
Dec 02 07:02:08.815 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 07:02:08.848 INFO [stderr] error: Could not compile `meta`.
Dec 02 07:02:08.848 INFO [stderr] 
Dec 02 07:02:08.848 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 07:02:08.851 INFO [stderr] su: No module specific data is present
Dec 02 07:02:09.900 INFO running `"docker" "inspect" "932b54e46bd94aac8e9e8b4e48e2f437efda2aeaf3e59cc531f515e67c24447b"`
Dec 02 07:02:10.167 INFO running `"docker" "rm" "-f" "932b54e46bd94aac8e9e8b4e48e2f437efda2aeaf3e59cc531f515e67c24447b"`
Dec 02 07:02:10.435 INFO [stdout] 932b54e46bd94aac8e9e8b4e48e2f437efda2aeaf3e59cc531f515e67c24447b