Oct 13 05:11:36.003 INFO checking ColbyCypherSociety/ChatDemo against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 05:11:36.003 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-4/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-4/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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"`
Oct 13 05:11:36.215 INFO blam! cf0c02a24c2fbacd865b8d9dc518a9dac2f7565dc86c980fae95fddafe580d90
Oct 13 05:11:36.220 INFO running `"docker" "start" "-a" "cf0c02a24c2fbacd865b8d9dc518a9dac2f7565dc86c980fae95fddafe580d90"`
Oct 13 05:11:36.784 INFO kablam! usermod: no changes
Oct 13 05:11:36.956 INFO kablam!    Compiling num-bigint v0.2.0
Oct 13 05:11:36.956 INFO kablam!    Compiling proc-macro2 v0.4.13
Oct 13 05:11:36.956 INFO kablam!     Checking num-complex v0.2.0
Oct 13 05:11:36.956 INFO kablam!     Checking num-iter v0.1.37
Oct 13 05:11:42.200 INFO kablam! error[E0658]: use of unstable library feature 'proc_macro_def_site' (see issue #54724)
Oct 13 05:11:42.201 INFO kablam!    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.13/src/unstable.rs:359:27
Oct 13 05:11:42.202 INFO kablam!     |
Oct 13 05:11:42.203 INFO kablam! 359 |             Span::Nightly(proc_macro::Span::def_site())
Oct 13 05:11:42.203 INFO kablam!     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 05:11:42.204 INFO kablam!     |
Oct 13 05:11:42.204 INFO kablam!     = help: add #![feature(proc_macro_def_site)] to the crate attributes to enable
Oct 13 05:11:42.205 INFO kablam! 
Oct 13 05:11:42.288 INFO kablam! error: aborting due to previous error
Oct 13 05:11:42.289 INFO kablam! 
Oct 13 05:11:42.290 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Oct 13 05:11:42.321 INFO kablam! error: Could not compile `proc-macro2`.
Oct 13 05:11:42.322 INFO kablam! warning: build failed, waiting for other jobs to finish...
Oct 13 05:11:43.475 INFO kablam! error: build failed
Oct 13 05:11:43.477 INFO kablam! su: No module specific data is present
Oct 13 05:11:44.537 INFO running `"docker" "rm" "-f" "cf0c02a24c2fbacd865b8d9dc518a9dac2f7565dc86c980fae95fddafe580d90"`
Oct 13 05:11:44.726 INFO blam! cf0c02a24c2fbacd865b8d9dc518a9dac2f7565dc86c980fae95fddafe580d90