Dec 02 18:09:33.102 INFO testing rwcell-0.1.2 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 18:09:33.102 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-1/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 18:09:33.422 INFO [stdout] f1c6ed1fbc1648faa303dff373f36093ee1d4258a58ab4056f5969d11e325170
Dec 02 18:09:33.429 INFO running `"docker" "start" "-a" "f1c6ed1fbc1648faa303dff373f36093ee1d4258a58ab4056f5969d11e325170"`
Dec 02 18:09:34.317 INFO [stderr] usermod: no changes
Dec 02 18:09:34.385 INFO [stderr]    Compiling rwcell v0.1.2 (/source)
Dec 02 18:09:35.005 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
Dec 02 18:09:35.008 INFO [stderr] su: No module specific data is present
Dec 02 18:09:35.797 INFO running `"docker" "inspect" "f1c6ed1fbc1648faa303dff373f36093ee1d4258a58ab4056f5969d11e325170"`
Dec 02 18:09:35.951 INFO running `"docker" "rm" "-f" "f1c6ed1fbc1648faa303dff373f36093ee1d4258a58ab4056f5969d11e325170"`
Dec 02 18:09:36.159 INFO [stdout] f1c6ed1fbc1648faa303dff373f36093ee1d4258a58ab4056f5969d11e325170
Dec 02 18:09:36.167 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-1/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 test --frozen --no-run" "-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 18:09:36.535 INFO [stdout] 76acafaccb863d6b64ad0ed46ff54dd5e3e4f6001e11e139625a0423f114988a
Dec 02 18:09:36.535 INFO running `"docker" "start" "-a" "76acafaccb863d6b64ad0ed46ff54dd5e3e4f6001e11e139625a0423f114988a"`
Dec 02 18:09:38.035 INFO [stderr] usermod: no changes
Dec 02 18:09:38.115 INFO [stderr]    Compiling rwcell v0.1.2 (/source)
Dec 02 18:09:38.790 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 18:09:38.791 INFO [stderr]  --> src/lib.rs:2:1
Dec 02 18:09:38.791 INFO [stderr]   |
Dec 02 18:09:38.791 INFO [stderr] 2 | #![feature(time2)]
Dec 02 18:09:38.791 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^
Dec 02 18:09:38.791 INFO [stderr] 
Dec 02 18:09:38.791 INFO [stderr] error: aborting due to previous error
Dec 02 18:09:38.791 INFO [stderr] 
Dec 02 18:09:38.791 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 18:09:38.791 INFO [stderr] error: Could not compile `rwcell`.
Dec 02 18:09:38.791 INFO [stderr] 
Dec 02 18:09:38.791 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 18:09:38.791 INFO [stderr] su: No module specific data is present
Dec 02 18:09:39.379 INFO running `"docker" "inspect" "76acafaccb863d6b64ad0ed46ff54dd5e3e4f6001e11e139625a0423f114988a"`
Dec 02 18:09:39.691 INFO running `"docker" "rm" "-f" "76acafaccb863d6b64ad0ed46ff54dd5e3e4f6001e11e139625a0423f114988a"`
Dec 02 18:09:39.874 INFO [stdout] 76acafaccb863d6b64ad0ed46ff54dd5e3e4f6001e11e139625a0423f114988a