Dec 03 11:01:03.844 INFO testing generic_cong_avoid-0.2.0 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 03 11:01:03.844 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 03 11:01:04.284 INFO [stdout] 2c3775b0ca9949dae9a39f119c6806755bed85e9ee100f922518590f1e819bfc
Dec 03 11:01:04.288 INFO running `"docker" "start" "-a" "2c3775b0ca9949dae9a39f119c6806755bed85e9ee100f922518590f1e819bfc"`
Dec 03 11:01:06.337 INFO [stderr] usermod: no changes
Dec 03 11:01:06.523 INFO [stderr]    Compiling syn v0.13.11
Dec 03 11:01:28.447 INFO [stderr]    Compiling portus v0.4.2
Dec 03 11:01:31.176 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 03 11:01:31.176 INFO [stderr]   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/portus-0.4.2/src/lib.rs:69:1
Dec 03 11:01:31.176 INFO [stderr]    |
Dec 03 11:01:31.176 INFO [stderr] 69 | #![feature(box_patterns)]
Dec 03 11:01:31.176 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 11:01:31.176 INFO [stderr] 
Dec 03 11:01:31.176 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 03 11:01:31.176 INFO [stderr]   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/portus-0.4.2/src/lib.rs:70:1
Dec 03 11:01:31.176 INFO [stderr]    |
Dec 03 11:01:31.176 INFO [stderr] 70 | #![feature(test)]
Dec 03 11:01:31.176 INFO [stderr]    | ^^^^^^^^^^^^^^^^^
Dec 03 11:01:31.176 INFO [stderr] 
Dec 03 11:01:31.176 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 03 11:01:31.176 INFO [stderr]   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/portus-0.4.2/src/lib.rs:71:1
Dec 03 11:01:31.176 INFO [stderr]    |
Dec 03 11:01:31.176 INFO [stderr] 71 | #![feature(never_type)]
Dec 03 11:01:31.176 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 11:01:31.176 INFO [stderr] 
Dec 03 11:01:31.176 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 03 11:01:31.176 INFO [stderr]   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/portus-0.4.2/src/lib.rs:72:1
Dec 03 11:01:31.176 INFO [stderr]    |
Dec 03 11:01:31.176 INFO [stderr] 72 | #![feature(integer_atomics)]
Dec 03 11:01:31.176 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 11:01:31.176 INFO [stderr] 
Dec 03 11:01:31.195 INFO [stderr] error: aborting due to 4 previous errors
Dec 03 11:01:31.195 INFO [stderr] 
Dec 03 11:01:31.195 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 11:01:31.205 INFO [stderr] error: Could not compile `portus`.
Dec 03 11:01:31.205 INFO [stderr] 
Dec 03 11:01:31.205 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 11:01:31.206 INFO [stderr] su: No module specific data is present
Dec 03 11:01:31.811 INFO running `"docker" "inspect" "2c3775b0ca9949dae9a39f119c6806755bed85e9ee100f922518590f1e819bfc"`
Dec 03 11:01:32.117 INFO running `"docker" "rm" "-f" "2c3775b0ca9949dae9a39f119c6806755bed85e9ee100f922518590f1e819bfc"`
Dec 03 11:01:32.379 INFO [stdout] 2c3775b0ca9949dae9a39f119c6806755bed85e9ee100f922518590f1e819bfc