Dec 06 01:44:07.627 INFO testing dflemstr/semantic-editor against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 06 01:44:07.627 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 06 01:44:07.861 INFO [stdout] 3d35018157ad764aa7924a4616d36501329384e50a5d67aa349bb7362d2e55c5
Dec 06 01:44:07.866 INFO running `"docker" "start" "-a" "3d35018157ad764aa7924a4616d36501329384e50a5d67aa349bb7362d2e55c5"`
Dec 06 01:44:08.372 INFO [stderr] usermod: no changes
Dec 06 01:44:08.684 INFO [stderr]    Compiling proc-macro2 v0.4.13
Dec 06 01:44:08.686 INFO [stderr]    Compiling wasm-bindgen-shared v0.2.19
Dec 06 01:44:08.687 INFO [stderr]    Compiling multimap v0.4.0
Dec 06 01:44:08.689 INFO [stderr]    Compiling alloc-no-stdlib v1.3.0
Dec 06 01:44:08.708 INFO [stderr]    Compiling type-info v0.2.1
Dec 06 01:44:08.708 INFO [stderr]    Compiling slog v2.3.2
Dec 06 01:44:08.709 INFO [stderr]    Compiling bytesize v1.0.0
Dec 06 01:44:08.709 INFO [stderr]    Compiling futures-await-await-macro v0.1.1
Dec 06 01:44:09.956 INFO [stderr]    Compiling walkdir v2.2.5
Dec 06 01:44:09.980 INFO [stderr]    Compiling env_logger v0.5.12
Dec 06 01:44:09.990 INFO [stderr]    Compiling prost v0.4.0
Dec 06 01:44:10.536 INFO [stderr]    Compiling http v0.1.9
Dec 06 01:44:10.948 INFO [stderr]    Compiling brotli-decompressor v1.3.1
Dec 06 01:44:11.008 INFO [stderr]    Compiling getset v0.0.6
Dec 06 01:44:12.140 INFO [stderr]    Compiling tokio-reactor v0.1.3
Dec 06 01:44:12.168 INFO [stderr]    Compiling semantic v0.1.0 (/source/semantic)
Dec 06 01:44:12.225 INFO [stderr]    Compiling type-info-derive v0.2.0
Dec 06 01:44:17.920 INFO [stderr]    Compiling slog-scope v4.0.1
Dec 06 01:44:19.920 INFO [stderr]    Compiling slog-async v2.3.0
Dec 06 01:44:20.024 INFO [stderr]    Compiling slog-json v2.2.0
Dec 06 01:44:20.148 INFO [stderr]    Compiling slog-term v2.4.0
Dec 06 01:44:22.932 INFO [stderr] error[E0658]: use of unstable library feature 'proc_macro_def_site' (see issue #54724)
Dec 06 01:44:22.932 INFO [stderr]    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.13/src/unstable.rs:359:27
Dec 06 01:44:22.932 INFO [stderr]     |
Dec 06 01:44:22.933 INFO [stderr] 359 |             Span::Nightly(proc_macro::Span::def_site())
Dec 06 01:44:22.933 INFO [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 01:44:22.933 INFO [stderr]     |
Dec 06 01:44:22.933 INFO [stderr]     = help: add #![feature(proc_macro_def_site)] to the crate attributes to enable
Dec 06 01:44:22.933 INFO [stderr] 
Dec 06 01:44:23.024 INFO [stderr] error: aborting due to previous error
Dec 06 01:44:23.024 INFO [stderr] 
Dec 06 01:44:23.025 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 06 01:44:23.072 INFO [stderr] error: Could not compile `proc-macro2`.
Dec 06 01:44:23.073 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 06 01:44:28.502 INFO [stderr] error: build failed
Dec 06 01:44:28.505 INFO [stderr] su: No module specific data is present
Dec 06 01:44:28.894 INFO running `"docker" "inspect" "3d35018157ad764aa7924a4616d36501329384e50a5d67aa349bb7362d2e55c5"`
Dec 06 01:44:29.100 INFO running `"docker" "rm" "-f" "3d35018157ad764aa7924a4616d36501329384e50a5d67aa349bb7362d2e55c5"`
Dec 06 01:44:29.282 INFO [stdout] 3d35018157ad764aa7924a4616d36501329384e50a5d67aa349bb7362d2e55c5