Dec 14 03:23:21.511 INFO testing alexandermccormick/wasm-conways-game-of-life against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 14 03:23:21.512 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-3/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 14 03:23:21.734 INFO [stdout] 26a6efc1acd5b36926aebc787dc31e640dfefa514ebb1ecbe53766a52479db7a
Dec 14 03:23:21.737 INFO running `"docker" "start" "-a" "26a6efc1acd5b36926aebc787dc31e640dfefa514ebb1ecbe53766a52479db7a"`
Dec 14 03:23:22.326 INFO [stderr] usermod: no changes
Dec 14 03:23:22.455 INFO [stderr]    Compiling wasm-bindgen-shared v0.2.17
Dec 14 03:23:22.459 INFO [stderr]    Compiling proc-macro2 v0.4.9
Dec 14 03:23:23.397 INFO [stderr] error[E0658]: use of unstable library feature 'proc_macro_def_site' (see issue #54724)
Dec 14 03:23:23.397 INFO [stderr]    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.9/src/unstable.rs:347:27
Dec 14 03:23:23.397 INFO [stderr]     |
Dec 14 03:23:23.397 INFO [stderr] 347 |             Span::Nightly(proc_macro::Span::def_site())
Dec 14 03:23:23.397 INFO [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 03:23:23.397 INFO [stderr]     |
Dec 14 03:23:23.397 INFO [stderr]     = help: add #![feature(proc_macro_def_site)] to the crate attributes to enable
Dec 14 03:23:23.397 INFO [stderr] 
Dec 14 03:23:23.414 INFO [stderr] error: aborting due to previous error
Dec 14 03:23:23.414 INFO [stderr] 
Dec 14 03:23:23.414 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 14 03:23:23.421 INFO [stderr] error: Could not compile `proc-macro2`.
Dec 14 03:23:23.421 INFO [stderr] 
Dec 14 03:23:23.421 INFO [stderr] To learn more, run the command again with --verbose.
Dec 14 03:23:23.423 INFO [stderr] su: No module specific data is present
Dec 14 03:23:23.720 INFO running `"docker" "inspect" "26a6efc1acd5b36926aebc787dc31e640dfefa514ebb1ecbe53766a52479db7a"`
Dec 14 03:23:23.828 INFO running `"docker" "rm" "-f" "26a6efc1acd5b36926aebc787dc31e640dfefa514ebb1ecbe53766a52479db7a"`
Dec 14 03:23:23.925 INFO [stdout] 26a6efc1acd5b36926aebc787dc31e640dfefa514ebb1ecbe53766a52479db7a