Dec 12 03:23:25.507 INFO checking ColbyCypherSociety/ChatDemo against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 03:23:25.507 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-alt check --frozen --all --all-targets" "-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 12 03:23:26.057 INFO [stdout] d6711290d9b6b8577706bf5c6d35ea7206d71f66e560d9737751a7d54cb52dc3
Dec 12 03:23:26.059 INFO running `"docker" "start" "-a" "d6711290d9b6b8577706bf5c6d35ea7206d71f66e560d9737751a7d54cb52dc3"`
Dec 12 03:23:27.523 INFO [stderr] usermod: no changes
Dec 12 03:23:27.734 INFO [stderr]    Compiling proc-macro2 v0.4.13
Dec 12 03:23:27.734 INFO [stderr]    Compiling wasm-bindgen-shared v0.2.17
Dec 12 03:23:27.764 INFO [stderr]    Compiling num-bigint v0.2.0
Dec 12 03:23:27.768 INFO [stderr]    Compiling serde_json v1.0.26
Dec 12 03:23:31.922 INFO [stderr] error[E0658]: use of unstable library feature 'proc_macro_def_site' (see issue #54724)
Dec 12 03:23:31.922 INFO [stderr]    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.13/src/unstable.rs:359:27
Dec 12 03:23:31.922 INFO [stderr]     |
Dec 12 03:23:31.922 INFO [stderr] 359 |             Span::Nightly(proc_macro::Span::def_site())
Dec 12 03:23:31.922 INFO [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 03:23:31.922 INFO [stderr]     |
Dec 12 03:23:31.922 INFO [stderr]     = help: add #![feature(proc_macro_def_site)] to the crate attributes to enable
Dec 12 03:23:31.922 INFO [stderr] 
Dec 12 03:23:31.960 INFO [stderr] error: aborting due to previous error
Dec 12 03:23:31.984 INFO [stderr] 
Dec 12 03:23:31.984 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 12 03:23:31.996 INFO [stderr] error: Could not compile `proc-macro2`.
Dec 12 03:23:31.996 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 12 03:23:34.836 INFO [stderr] error: build failed
Dec 12 03:23:34.840 INFO [stderr] su: No module specific data is present
Dec 12 03:23:35.538 INFO running `"docker" "inspect" "d6711290d9b6b8577706bf5c6d35ea7206d71f66e560d9737751a7d54cb52dc3"`
Dec 12 03:23:35.800 INFO running `"docker" "rm" "-f" "d6711290d9b6b8577706bf5c6d35ea7206d71f66e560d9737751a7d54cb52dc3"`
Dec 12 03:23:36.055 INFO [stdout] d6711290d9b6b8577706bf5c6d35ea7206d71f66e560d9737751a7d54cb52dc3