Nov 01 12:21:57.611 INFO checking EmmaRamirez/rust-and-webassembly-talk against master#05812fa8c588473f03e3fa7cf59cd84f4f37c715 for pr-55538
Nov 01 12:21:57.611 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-5/master#05812fa8c588473f03e3fa7cf59cd84f4f37c715:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-55538/master#05812fa8c588473f03e3fa7cf59cd84f4f37c715:/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 +05812fa8c588473f03e3fa7cf59cd84f4f37c715-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 01 12:21:58.136 INFO blam! d088aadc4826e491c3bfa7bd00656f41b181d3d8e0c1d7aa1d1f20afb95d3df2
Nov 01 12:21:58.137 INFO running `"docker" "start" "-a" "d088aadc4826e491c3bfa7bd00656f41b181d3d8e0c1d7aa1d1f20afb95d3df2"`
Nov 01 12:22:00.872 INFO kablam! usermod: no changes
Nov 01 12:22:01.067 INFO kablam!    Compiling proc-macro2 v0.4.12
Nov 01 12:22:01.068 INFO kablam!    Compiling serde_json v1.0.26
Nov 01 12:22:06.628 INFO kablam! error[E0658]: use of unstable library feature 'proc_macro_def_site' (see issue #54724)
Nov 01 12:22:06.628 INFO kablam!    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.12/src/unstable.rs:346:27
Nov 01 12:22:06.628 INFO kablam!     |
Nov 01 12:22:06.628 INFO kablam! 346 |             Span::Nightly(proc_macro::Span::def_site())
Nov 01 12:22:06.628 INFO kablam!     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 12:22:06.628 INFO kablam!     |
Nov 01 12:22:06.628 INFO kablam!     = help: add #![feature(proc_macro_def_site)] to the crate attributes to enable
Nov 01 12:22:06.628 INFO kablam! 
Nov 01 12:22:06.656 INFO kablam! error: aborting due to previous error
Nov 01 12:22:06.656 INFO kablam! 
Nov 01 12:22:06.656 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Nov 01 12:22:06.676 INFO kablam! error: Could not compile `proc-macro2`.
Nov 01 12:22:06.676 INFO kablam! warning: build failed, waiting for other jobs to finish...
Nov 01 12:22:08.274 INFO kablam! error: build failed
Nov 01 12:22:08.276 INFO kablam! su: No module specific data is present
Nov 01 12:22:09.817 INFO running `"docker" "rm" "-f" "d088aadc4826e491c3bfa7bd00656f41b181d3d8e0c1d7aa1d1f20afb95d3df2"`
Nov 01 12:22:10.092 INFO blam! d088aadc4826e491c3bfa7bd00656f41b181d3d8e0c1d7aa1d1f20afb95d3df2