Nov 28 05:49:24.265 INFO documenting EmmaRamirez/rust-and-webassembly-talk against master#6bfb46e4ac9a2704f06de1a2ff7a4612cd70c8cb for pr-55318
Nov 28 05:49:24.266 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55318/worker-0/master#6bfb46e4ac9a2704f06de1a2ff7a4612cd70c8cb:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-55318/master#6bfb46e4ac9a2704f06de1a2ff7a4612cd70c8cb:/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 +6bfb46e4ac9a2704f06de1a2ff7a4612cd70c8cb-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 05:49:24.819 INFO [stdout] e6e63addedc0cfdce9a664f5befc275425d518245fe979b68369bb1d0f546806
Nov 28 05:49:24.825 INFO running `"docker" "start" "-a" "e6e63addedc0cfdce9a664f5befc275425d518245fe979b68369bb1d0f546806"`
Nov 28 05:49:26.547 INFO [stderr] usermod: no changes
Nov 28 05:49:26.713 INFO [stderr]    Compiling proc-macro2 v0.4.12
Nov 28 05:49:26.713 INFO [stderr]    Compiling serde_json v1.0.26
Nov 28 05:49:30.719 INFO [stderr] error[E0658]: use of unstable library feature 'proc_macro_def_site' (see issue #54724)
Nov 28 05:49:30.719 INFO [stderr]    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.12/src/unstable.rs:346:27
Nov 28 05:49:30.719 INFO [stderr]     |
Nov 28 05:49:30.719 INFO [stderr] 346 |             Span::Nightly(proc_macro::Span::def_site())
Nov 28 05:49:30.719 INFO [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 05:49:30.719 INFO [stderr]     |
Nov 28 05:49:30.719 INFO [stderr]     = help: add #![feature(proc_macro_def_site)] to the crate attributes to enable
Nov 28 05:49:30.719 INFO [stderr] 
Nov 28 05:49:30.735 INFO [stderr] error: aborting due to previous error
Nov 28 05:49:30.735 INFO [stderr] 
Nov 28 05:49:30.735 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Nov 28 05:49:30.743 INFO [stderr] error: Could not compile `proc-macro2`.
Nov 28 05:49:30.743 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Nov 28 05:49:32.929 INFO [stderr] error: build failed
Nov 28 05:49:32.931 INFO [stderr] su: No module specific data is present
Nov 28 05:49:33.611 INFO running `"docker" "inspect" "e6e63addedc0cfdce9a664f5befc275425d518245fe979b68369bb1d0f546806"`
Nov 28 05:49:33.961 INFO running `"docker" "rm" "-f" "e6e63addedc0cfdce9a664f5befc275425d518245fe979b68369bb1d0f546806"`
Nov 28 05:49:34.307 INFO [stdout] e6e63addedc0cfdce9a664f5befc275425d518245fe979b68369bb1d0f546806