Dec 02 11:23:45.516 INFO testing wasm-rpc-macros-0.2.6 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 11:23:45.516 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 11:23:45.702 INFO [stdout] 37ce699eb9f42ae536cc13ca29d128a868ad05458dd3c7102d6d237f4d6d7aeb
Dec 02 11:23:45.704 INFO running `"docker" "start" "-a" "37ce699eb9f42ae536cc13ca29d128a868ad05458dd3c7102d6d237f4d6d7aeb"`
Dec 02 11:23:46.207 INFO [stderr] usermod: no changes
Dec 02 11:23:46.253 INFO [stderr]    Compiling proc-macro2 v0.4.24
Dec 02 11:23:51.900 INFO [stderr]    Compiling quote v0.6.10
Dec 02 11:23:55.244 INFO [stderr]    Compiling syn v0.14.9
Dec 02 11:24:13.347 INFO [stderr]    Compiling wasm-rpc-macros v0.2.6 (/source)
Dec 02 11:24:16.638 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 11:24:16.638 INFO [stderr]  --> src/lib.rs:1:1
Dec 02 11:24:16.638 INFO [stderr]   |
Dec 02 11:24:16.638 INFO [stderr] 1 | / #![feature(
Dec 02 11:24:16.638 INFO [stderr] 2 | |     type_ascription,
Dec 02 11:24:16.638 INFO [stderr] 3 | |     box_patterns,
Dec 02 11:24:16.638 INFO [stderr] 4 | |     proc_macro_quote,
Dec 02 11:24:16.638 INFO [stderr] 5 | |     rustc_private,
Dec 02 11:24:16.638 INFO [stderr] 6 | | )]
Dec 02 11:24:16.638 INFO [stderr]   | |__^
Dec 02 11:24:16.638 INFO [stderr] 
Dec 02 11:24:16.638 INFO [stderr] error: aborting due to previous error
Dec 02 11:24:16.638 INFO [stderr] 
Dec 02 11:24:16.638 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 11:24:16.655 INFO [stderr] error: Could not compile `wasm-rpc-macros`.
Dec 02 11:24:16.655 INFO [stderr] 
Dec 02 11:24:16.655 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 11:24:16.656 INFO [stderr] su: No module specific data is present
Dec 02 11:24:17.688 INFO running `"docker" "inspect" "37ce699eb9f42ae536cc13ca29d128a868ad05458dd3c7102d6d237f4d6d7aeb"`
Dec 02 11:24:17.959 INFO running `"docker" "rm" "-f" "37ce699eb9f42ae536cc13ca29d128a868ad05458dd3c7102d6d237f4d6d7aeb"`
Dec 02 11:24:18.263 INFO [stdout] 37ce699eb9f42ae536cc13ca29d128a868ad05458dd3c7102d6d237f4d6d7aeb