Dec 03 10:54:59.964 INFO testing get_env-0.1.0 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 03 10:54:59.964 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-3/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 03 10:55:00.143 INFO [stdout] 27e0eecf784626881e06431e09074e4a457c9a10ec0d88f9a0817e4ca0f5a1de
Dec 03 10:55:00.147 INFO running `"docker" "start" "-a" "27e0eecf784626881e06431e09074e4a457c9a10ec0d88f9a0817e4ca0f5a1de"`
Dec 03 10:55:00.557 INFO [stderr] usermod: no changes
Dec 03 10:55:00.607 INFO [stderr]    Compiling get_env v0.1.0 (/source)
Dec 03 10:55:01.137 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 03 10:55:01.137 INFO [stderr]   --> src/lib.rs:35:2
Dec 03 10:55:01.147 INFO [stderr]    |
Dec 03 10:55:01.147 INFO [stderr] 35 |     feature(used)
Dec 03 10:55:01.147 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 03 10:55:01.147 INFO [stderr] 
Dec 03 10:55:01.147 INFO [stderr] error: aborting due to previous error
Dec 03 10:55:01.147 INFO [stderr] 
Dec 03 10:55:01.147 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 10:55:01.149 INFO [stderr] error: Could not compile `get_env`.
Dec 03 10:55:01.149 INFO [stderr] 
Dec 03 10:55:01.149 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 10:55:01.151 INFO [stderr] su: No module specific data is present
Dec 03 10:55:01.485 INFO running `"docker" "inspect" "27e0eecf784626881e06431e09074e4a457c9a10ec0d88f9a0817e4ca0f5a1de"`
Dec 03 10:55:01.620 INFO running `"docker" "rm" "-f" "27e0eecf784626881e06431e09074e4a457c9a10ec0d88f9a0817e4ca0f5a1de"`
Dec 03 10:55:01.715 INFO [stdout] 27e0eecf784626881e06431e09074e4a457c9a10ec0d88f9a0817e4ca0f5a1de