Dec 02 07:01:15.083 INFO testing Hoverbear/rust-rosetta against 1.30.1 for beta-1.31-5
Dec 02 07:01:15.083 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-5/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/beta-1.31-5/1.30.1:/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 +1.30.1 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 07:01:15.650 INFO [stdout] 127816133abdafe0b80ec32e0ccb221a44c00a87ed421bc2e697f4cc42a52bd7
Dec 02 07:01:15.652 INFO running `"docker" "start" "-a" "127816133abdafe0b80ec32e0ccb221a44c00a87ed421bc2e697f4cc42a52bd7"`
Dec 02 07:01:16.452 INFO [stderr] usermod: no changes
Dec 02 07:01:17.351 INFO [stderr]    Compiling pathdiff v0.1.0
Dec 02 07:01:17.363 INFO [stderr]    Compiling tokio-io v0.1.7
Dec 02 07:01:17.363 INFO [stderr]    Compiling serde_urlencoded v0.5.2
Dec 02 07:01:17.363 INFO [stderr]    Compiling structopt-derive v0.2.10
Dec 02 07:01:17.363 INFO [stderr]    Compiling env_logger v0.5.10
Dec 02 07:01:17.363 INFO [stderr]    Compiling error-chain v0.12.0
Dec 02 07:01:20.179 INFO [stderr]    Compiling cargo_metadata v0.6.0
Dec 02 07:01:22.520 INFO [stderr]    Compiling tokio-reactor v0.1.2
Dec 02 07:01:22.520 INFO [stderr]    Compiling tokio-codec v0.1.0
Dec 02 07:01:22.520 INFO [stderr]    Compiling tokio-fs v0.1.2
Dec 02 07:01:27.889 INFO [stderr]    Compiling tokio-tcp v0.1.0
Dec 02 07:01:27.889 INFO [stderr]    Compiling tokio-udp v0.1.1
Dec 02 07:01:31.463 INFO [stderr]    Compiling tokio v0.1.7
Dec 02 07:01:31.734 INFO [stderr]    Compiling structopt v0.2.10
Dec 02 07:01:34.516 INFO [stderr]    Compiling tokio-core v0.1.17
Dec 02 07:01:38.196 INFO [stderr]    Compiling tokio-proto v0.1.1
Dec 02 07:01:38.198 INFO [stderr]    Compiling tokio-tls v0.1.4
Dec 02 07:01:42.270 INFO [stderr]    Compiling hyper v0.11.27
Dec 02 07:01:52.723 INFO [stderr]    Compiling hyper-tls v0.1.3
Dec 02 07:01:56.470 INFO [stderr]    Compiling reqwest v0.8.6
Dec 02 07:02:06.399 INFO [stderr]    Compiling find-unimplemented-tasks v0.1.0 (/source/tasks/rosetta-code/find-unimplemented-tasks)
Dec 02 07:02:12.398 INFO [stderr]    Compiling meta v0.1.0 (/source/meta)
Dec 02 07:02:18.519 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 07:02:18.519 INFO [stderr]  --> meta/src/lib.rs:5:1
Dec 02 07:02:18.519 INFO [stderr]   |
Dec 02 07:02:18.519 INFO [stderr] 5 | #![feature(fs_read_write)]
Dec 02 07:02:18.519 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 07:02:18.519 INFO [stderr] 
Dec 02 07:02:18.519 INFO [stderr] error: aborting due to previous error
Dec 02 07:02:18.519 INFO [stderr] 
Dec 02 07:02:18.519 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 07:02:18.567 INFO [stderr] error: Could not compile `meta`.
Dec 02 07:02:18.567 INFO [stderr] 
Dec 02 07:02:18.567 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 07:02:18.567 INFO [stderr] su: No module specific data is present
Dec 02 07:02:19.137 INFO running `"docker" "inspect" "127816133abdafe0b80ec32e0ccb221a44c00a87ed421bc2e697f4cc42a52bd7"`
Dec 02 07:02:19.455 INFO running `"docker" "rm" "-f" "127816133abdafe0b80ec32e0ccb221a44c00a87ed421bc2e697f4cc42a52bd7"`
Dec 02 07:02:19.818 INFO [stdout] 127816133abdafe0b80ec32e0ccb221a44c00a87ed421bc2e697f4cc42a52bd7