Nov 28 05:49:23.781 INFO documenting EmmaRamirez/rust-and-webassembly-talk against try#f5a0bd723553ea4b7556bd7087b9f0919cafb483 for pr-55318
Nov 28 05:49:23.783 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55318/worker-3/try#f5a0bd723553ea4b7556bd7087b9f0919cafb483:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55318/try#f5a0bd723553ea4b7556bd7087b9f0919cafb483:/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 +f5a0bd723553ea4b7556bd7087b9f0919cafb483-alt doc --frozen --no-deps --document-private-items" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 28 05:49:24.331 INFO [stdout] 23942207b911fc3d59e9d99b06c896c53ff4761cade7a812d08e9b202f1a871f
Nov 28 05:49:24.337 INFO running `"docker" "start" "-a" "23942207b911fc3d59e9d99b06c896c53ff4761cade7a812d08e9b202f1a871f"`
Nov 28 05:49:26.710 INFO [stderr] usermod: no changes
Nov 28 05:49:26.966 INFO [stderr]    Compiling proc-macro2 v0.4.12
Nov 28 05:49:26.966 INFO [stderr]    Compiling wasm-bindgen-shared v0.2.16
Nov 28 05:49:26.975 INFO [stderr]    Compiling log v0.4.3
Nov 28 05:49:32.550 INFO [stderr] error[E0658]: use of unstable library feature 'proc_macro_def_site' (see issue #54724)
Nov 28 05:49:32.550 INFO [stderr]    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.12/src/unstable.rs:346:27
Nov 28 05:49:32.550 INFO [stderr]     |
Nov 28 05:49:32.550 INFO [stderr] 346 |             Span::Nightly(proc_macro::Span::def_site())
Nov 28 05:49:32.550 INFO [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 05:49:32.550 INFO [stderr]     |
Nov 28 05:49:32.550 INFO [stderr]     = help: add #![feature(proc_macro_def_site)] to the crate attributes to enable
Nov 28 05:49:32.550 INFO [stderr] 
Nov 28 05:49:32.571 INFO [stderr] error: aborting due to previous error
Nov 28 05:49:32.571 INFO [stderr] 
Nov 28 05:49:32.571 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Nov 28 05:49:32.591 INFO [stderr] error: Could not compile `proc-macro2`.
Nov 28 05:49:32.591 INFO [stderr] 
Nov 28 05:49:32.591 INFO [stderr] To learn more, run the command again with --verbose.
Nov 28 05:49:32.594 INFO [stderr] su: No module specific data is present
Nov 28 05:49:33.405 INFO running `"docker" "inspect" "23942207b911fc3d59e9d99b06c896c53ff4761cade7a812d08e9b202f1a871f"`
Nov 28 05:49:33.677 INFO running `"docker" "rm" "-f" "23942207b911fc3d59e9d99b06c896c53ff4761cade7a812d08e9b202f1a871f"`
Nov 28 05:49:34.031 INFO [stdout] 23942207b911fc3d59e9d99b06c896c53ff4761cade7a812d08e9b202f1a871f