Nov 28 06:07:38.085 INFO documenting ColbyCypherSociety/ChatDemo against master#6bfb46e4ac9a2704f06de1a2ff7a4612cd70c8cb for pr-55318
Nov 28 06:07:38.085 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55318/worker-2/master#6bfb46e4ac9a2704f06de1a2ff7a4612cd70c8cb:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/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 06:07:38.496 INFO [stdout] b5d261618b9abf633be0ff25307eeee33f8add333e8b0b7d2a4fbf812c484e3d
Nov 28 06:07:38.500 INFO running `"docker" "start" "-a" "b5d261618b9abf633be0ff25307eeee33f8add333e8b0b7d2a4fbf812c484e3d"`
Nov 28 06:07:40.195 INFO [stderr] usermod: no changes
Nov 28 06:07:40.433 INFO [stderr]    Compiling proc-macro2 v0.4.13
Nov 28 06:07:40.436 INFO [stderr]    Compiling wasm-bindgen-shared v0.2.17
Nov 28 06:07:40.444 INFO [stderr]    Compiling num-bigint v0.2.0
Nov 28 06:07:40.446 INFO [stderr]    Compiling ryu v0.2.4
Nov 28 06:07:40.447 INFO [stderr]     Checking num-complex v0.2.0
Nov 28 06:07:40.454 INFO [stderr]     Checking num-iter v0.1.37
Nov 28 06:07:42.296 INFO [stderr]    Compiling serde_json v1.0.26
Nov 28 06:07:47.195 INFO [stderr] error[E0658]: use of unstable library feature 'proc_macro_def_site' (see issue #54724)
Nov 28 06:07:47.196 INFO [stderr]    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.13/src/unstable.rs:359:27
Nov 28 06:07:47.196 INFO [stderr]     |
Nov 28 06:07:47.196 INFO [stderr] 359 |             Span::Nightly(proc_macro::Span::def_site())
Nov 28 06:07:47.197 INFO [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 06:07:47.197 INFO [stderr]     |
Nov 28 06:07:47.197 INFO [stderr]     = help: add #![feature(proc_macro_def_site)] to the crate attributes to enable
Nov 28 06:07:47.198 INFO [stderr] 
Nov 28 06:07:47.215 INFO [stderr] error: aborting due to previous error
Nov 28 06:07:47.216 INFO [stderr] 
Nov 28 06:07:47.216 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Nov 28 06:07:47.227 INFO [stderr] error: Could not compile `proc-macro2`.
Nov 28 06:07:47.228 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Nov 28 06:07:48.963 INFO [stderr] error: build failed
Nov 28 06:07:48.964 INFO [stderr] su: No module specific data is present
Nov 28 06:07:49.632 INFO running `"docker" "inspect" "b5d261618b9abf633be0ff25307eeee33f8add333e8b0b7d2a4fbf812c484e3d"`
Nov 28 06:07:49.997 INFO running `"docker" "rm" "-f" "b5d261618b9abf633be0ff25307eeee33f8add333e8b0b7d2a4fbf812c484e3d"`
Nov 28 06:07:50.407 INFO [stdout] b5d261618b9abf633be0ff25307eeee33f8add333e8b0b7d2a4fbf812c484e3d