Dec 02 11:18:45.243 INFO testing wbg-rand-0.4.1 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 11:18:45.243 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-7/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 11:18:45.475 INFO [stdout] bec44dd8e9b5a2129d2c132c7c0d638a772998801460e5499370cda6df181e4b
Dec 02 11:18:45.480 INFO running `"docker" "start" "-a" "bec44dd8e9b5a2129d2c132c7c0d638a772998801460e5499370cda6df181e4b"`
Dec 02 11:18:46.329 INFO [stderr] usermod: no changes
Dec 02 11:18:46.447 INFO [stderr]    Compiling wasm-bindgen-shared v0.2.28
Dec 02 11:18:46.451 INFO [stderr]    Compiling wasm-bindgen v0.2.28
Dec 02 11:18:46.511 INFO [stderr]    Compiling syn v0.15.22
Dec 02 11:19:01.431 INFO [stderr]    Compiling wasm-bindgen-backend v0.2.28
Dec 02 11:19:11.825 INFO [stderr]    Compiling wasm-bindgen-macro-support v0.2.28
Dec 02 11:19:18.400 INFO [stderr]    Compiling wasm-bindgen-macro v0.2.28
Dec 02 11:19:23.931 INFO [stderr]    Compiling wbg-rand v0.4.1 (/source)
Dec 02 11:19:24.787 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 11:19:24.787 INFO [stderr]   --> src/lib.rs:28:1
Dec 02 11:19:24.787 INFO [stderr]    |
Dec 02 11:19:24.787 INFO [stderr] 28 | #![feature(use_extern_macros)]
Dec 02 11:19:24.787 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 11:19:24.787 INFO [stderr] 
Dec 02 11:19:24.787 INFO [stderr] error: aborting due to previous error
Dec 02 11:19:24.787 INFO [stderr] 
Dec 02 11:19:24.792 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 11:19:24.795 INFO [stderr] error: Could not compile `wbg-rand`.
Dec 02 11:19:24.795 INFO [stderr] 
Dec 02 11:19:24.795 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 11:19:24.797 INFO [stderr] su: No module specific data is present
Dec 02 11:19:25.275 INFO running `"docker" "inspect" "bec44dd8e9b5a2129d2c132c7c0d638a772998801460e5499370cda6df181e4b"`
Dec 02 11:19:25.397 INFO running `"docker" "rm" "-f" "bec44dd8e9b5a2129d2c132c7c0d638a772998801460e5499370cda6df181e4b"`
Dec 02 11:19:25.537 INFO [stdout] bec44dd8e9b5a2129d2c132c7c0d638a772998801460e5499370cda6df181e4b