Dec 14 10:37:58.587 INFO testing EmmaRamirez/rust-and-webassembly-talk against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 14 10:37:58.587 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-2/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt build --frozen" "-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 14 10:37:59.158 INFO [stdout] 475ddb8b3378a6558ec7b9b200c3ad31b154391435b118f799b06cf7e5209df3
Dec 14 10:37:59.160 INFO running `"docker" "start" "-a" "475ddb8b3378a6558ec7b9b200c3ad31b154391435b118f799b06cf7e5209df3"`
Dec 14 10:38:01.850 INFO [stderr] usermod: no changes
Dec 14 10:38:02.068 INFO [stderr]    Compiling proc-macro2 v0.4.12
Dec 14 10:38:02.068 INFO [stderr]    Compiling wasm-bindgen-shared v0.2.16
Dec 14 10:38:05.063 INFO [stderr] error[E0658]: use of unstable library feature 'proc_macro_def_site' (see issue #54724)
Dec 14 10:38:05.063 INFO [stderr]    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.12/src/unstable.rs:346:27
Dec 14 10:38:05.063 INFO [stderr]     |
Dec 14 10:38:05.063 INFO [stderr] 346 |             Span::Nightly(proc_macro::Span::def_site())
Dec 14 10:38:05.063 INFO [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:38:05.063 INFO [stderr]     |
Dec 14 10:38:05.063 INFO [stderr]     = help: add #![feature(proc_macro_def_site)] to the crate attributes to enable
Dec 14 10:38:05.063 INFO [stderr] 
Dec 14 10:38:05.077 INFO [stderr] error: aborting due to previous error
Dec 14 10:38:05.077 INFO [stderr] 
Dec 14 10:38:05.077 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 14 10:38:05.087 INFO [stderr] error: Could not compile `proc-macro2`.
Dec 14 10:38:05.087 INFO [stderr] 
Dec 14 10:38:05.087 INFO [stderr] To learn more, run the command again with --verbose.
Dec 14 10:38:05.089 INFO [stderr] su: No module specific data is present
Dec 14 10:38:06.339 INFO running `"docker" "inspect" "475ddb8b3378a6558ec7b9b200c3ad31b154391435b118f799b06cf7e5209df3"`
Dec 14 10:38:06.666 INFO running `"docker" "rm" "-f" "475ddb8b3378a6558ec7b9b200c3ad31b154391435b118f799b06cf7e5209df3"`
Dec 14 10:38:07.022 INFO [stdout] 475ddb8b3378a6558ec7b9b200c3ad31b154391435b118f799b06cf7e5209df3