Nov 01 12:21:53.996 INFO checking EmmaRamirez/rust-and-webassembly-talk against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Nov 01 12:21:53.998 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-3/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55538/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/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 +d7816399d50d407bbce1efe9dbadf8faaaf568fc-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 12:21:54.574 INFO blam! 3659c4bd803cb60b676e59644133a0723b7eb8b780223d10036f30f13d022681
Nov 01 12:21:54.576 INFO running `"docker" "start" "-a" "3659c4bd803cb60b676e59644133a0723b7eb8b780223d10036f30f13d022681"`
Nov 01 12:21:56.636 INFO kablam! usermod: no changes
Nov 01 12:21:56.849 INFO kablam!    Compiling proc-macro2 v0.4.12
Nov 01 12:21:56.850 INFO kablam!    Compiling wasm-bindgen-shared v0.2.16
Nov 01 12:21:56.852 INFO kablam!    Compiling log v0.4.3
Nov 01 12:22:02.588 INFO kablam! error[E0658]: use of unstable library feature 'proc_macro_def_site' (see issue #54724)
Nov 01 12:22:02.589 INFO kablam!    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.12/src/unstable.rs:346:27
Nov 01 12:22:02.589 INFO kablam!     |
Nov 01 12:22:02.590 INFO kablam! 346 |             Span::Nightly(proc_macro::Span::def_site())
Nov 01 12:22:02.591 INFO kablam!     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 12:22:02.591 INFO kablam!     |
Nov 01 12:22:02.592 INFO kablam!     = help: add #![feature(proc_macro_def_site)] to the crate attributes to enable
Nov 01 12:22:02.592 INFO kablam! 
Nov 01 12:22:02.612 INFO kablam! error: aborting due to previous error
Nov 01 12:22:02.612 INFO kablam! 
Nov 01 12:22:02.613 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Nov 01 12:22:02.625 INFO kablam! error: Could not compile `proc-macro2`.
Nov 01 12:22:02.625 INFO kablam! 
Nov 01 12:22:02.625 INFO kablam! To learn more, run the command again with --verbose.
Nov 01 12:22:02.627 INFO kablam! su: No module specific data is present
Nov 01 12:22:04.075 INFO running `"docker" "rm" "-f" "3659c4bd803cb60b676e59644133a0723b7eb8b780223d10036f30f13d022681"`
Nov 01 12:22:04.396 INFO blam! 3659c4bd803cb60b676e59644133a0723b7eb8b780223d10036f30f13d022681