Dec 01 13:56:32.075 INFO documenting jeremyBanks/tprime against master#147e60c5f89cfa2d3ffc247413956a37582c98e7 for pr-55318-1
Dec 01 13:56:32.075 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55318-1/worker-4/master#147e60c5f89cfa2d3ffc247413956a37582c98e7:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55318-1/master#147e60c5f89cfa2d3ffc247413956a37582c98e7:/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 +147e60c5f89cfa2d3ffc247413956a37582c98e7-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"`
Dec 01 13:56:32.456 INFO [stdout] 3c54116e668e0b2d725713dd6e2ccccd8a4ce0163a1b9a2d1f7f7bc748196635
Dec 01 13:56:32.460 INFO running `"docker" "start" "-a" "3c54116e668e0b2d725713dd6e2ccccd8a4ce0163a1b9a2d1f7f7bc748196635"`
Dec 01 13:56:34.395 INFO [stderr] usermod: no changes
Dec 01 13:56:34.524 INFO [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
Dec 01 13:56:34.624 INFO [stderr]    Compiling wasm-bindgen-shared v0.2.15
Dec 01 13:56:34.624 INFO [stderr]     Checking rand_core v0.2.1
Dec 01 13:56:34.624 INFO [stderr]     Checking web-sys v0.0.1
Dec 01 13:56:34.624 INFO [stderr]    Compiling proc-macro2 v0.4.9
Dec 01 13:56:34.624 INFO [stderr]    Compiling serde v1.0.71
Dec 01 13:56:34.669 INFO [stderr]    Compiling serdebug v1.0.5
Dec 01 13:56:36.584 INFO [stderr]     Checking rand v0.5.5
Dec 01 13:56:39.975 INFO [stderr] error[E0658]: use of unstable library feature 'proc_macro_def_site' (see issue #54724)
Dec 01 13:56:39.975 INFO [stderr]    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.9/src/unstable.rs:347:27
Dec 01 13:56:39.975 INFO [stderr]     |
Dec 01 13:56:39.975 INFO [stderr] 347 |             Span::Nightly(proc_macro::Span::def_site())
Dec 01 13:56:39.975 INFO [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 13:56:39.975 INFO [stderr]     |
Dec 01 13:56:39.975 INFO [stderr]     = help: add #![feature(proc_macro_def_site)] to the crate attributes to enable
Dec 01 13:56:39.975 INFO [stderr] 
Dec 01 13:56:40.041 INFO [stderr] error: aborting due to previous error
Dec 01 13:56:40.056 INFO [stderr] 
Dec 01 13:56:40.056 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 01 13:56:40.066 INFO [stderr] error: Could not compile `proc-macro2`.
Dec 01 13:56:40.066 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 01 13:56:50.571 INFO [stderr] error: build failed
Dec 01 13:56:50.572 INFO [stderr] su: No module specific data is present
Dec 01 13:56:51.082 INFO running `"docker" "inspect" "3c54116e668e0b2d725713dd6e2ccccd8a4ce0163a1b9a2d1f7f7bc748196635"`
Dec 01 13:56:51.344 INFO running `"docker" "rm" "-f" "3c54116e668e0b2d725713dd6e2ccccd8a4ce0163a1b9a2d1f7f7bc748196635"`
Dec 01 13:56:51.749 INFO [stdout] 3c54116e668e0b2d725713dd6e2ccccd8a4ce0163a1b9a2d1f7f7bc748196635