Nov 28 14:06:51.650 INFO checking ColbyCypherSociety/ChatDemo against master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5 for pr-56074
Nov 28 14:06:51.651 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-3/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56074/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/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 +0b9f19dff1347e29bf4362ab5a8fab84b43023b5-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"`
Nov 28 14:06:52.138 INFO [stdout] b05f558322b9ecb2470502e1925513629bcd421d070c4bfafac38b188538c373
Nov 28 14:06:52.142 INFO running `"docker" "start" "-a" "b05f558322b9ecb2470502e1925513629bcd421d070c4bfafac38b188538c373"`
Nov 28 14:06:53.535 INFO [stderr] usermod: no changes
Nov 28 14:06:53.732 INFO [stderr]    Compiling proc-macro2 v0.4.13
Nov 28 14:06:53.732 INFO [stderr]    Compiling wasm-bindgen-shared v0.2.17
Nov 28 14:06:53.733 INFO [stderr]    Compiling num-bigint v0.2.0
Nov 28 14:06:53.735 INFO [stderr]    Compiling serde_json v1.0.26
Nov 28 14:07:01.040 INFO [stderr]     Checking num-rational v0.2.1
Nov 28 14:07:01.768 INFO [stderr] error[E0658]: use of unstable library feature 'proc_macro_def_site' (see issue #54724)
Nov 28 14:07:01.768 INFO [stderr]    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.13/src/unstable.rs:359:27
Nov 28 14:07:01.768 INFO [stderr]     |
Nov 28 14:07:01.768 INFO [stderr] 359 |             Span::Nightly(proc_macro::Span::def_site())
Nov 28 14:07:01.768 INFO [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:07:01.768 INFO [stderr]     |
Nov 28 14:07:01.768 INFO [stderr]     = help: add #![feature(proc_macro_def_site)] to the crate attributes to enable
Nov 28 14:07:01.768 INFO [stderr] 
Nov 28 14:07:01.789 INFO [stderr] error: aborting due to previous error
Nov 28 14:07:01.789 INFO [stderr] 
Nov 28 14:07:01.789 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Nov 28 14:07:01.799 INFO [stderr] error: Could not compile `proc-macro2`.
Nov 28 14:07:01.799 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Nov 28 14:07:02.710 INFO [stderr] error: build failed
Nov 28 14:07:02.711 INFO [stderr] su: No module specific data is present
Nov 28 14:07:03.303 INFO running `"docker" "inspect" "b05f558322b9ecb2470502e1925513629bcd421d070c4bfafac38b188538c373"`
Nov 28 14:07:03.527 INFO running `"docker" "rm" "-f" "b05f558322b9ecb2470502e1925513629bcd421d070c4bfafac38b188538c373"`
Nov 28 14:07:03.844 INFO [stdout] b05f558322b9ecb2470502e1925513629bcd421d070c4bfafac38b188538c373