Dec 19 19:01:52.115 INFO checking christiansakai/todo_rust against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 19:01:52.115 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/christiansakai/todo_rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 19:01:52.562 INFO [stdout] 70a66b332acf81c73e4da15e7fd53e1f8e93479b6d54d988eb5acb034005d3bf
Dec 19 19:01:52.565 INFO running `"docker" "start" "-a" "70a66b332acf81c73e4da15e7fd53e1f8e93479b6d54d988eb5acb034005d3bf"`
Dec 19 19:01:54.190 INFO [stderr]    Compiling pear_codegen v0.0.20
Dec 19 19:01:54.191 INFO [stderr]    Compiling hyper v0.10.13
Dec 19 19:01:54.191 INFO [stderr]     Checking diesel v1.3.3
Dec 19 19:01:54.200 INFO [stderr]     Checking tera v0.10.10
Dec 19 19:01:54.200 INFO [stderr]    Compiling rayon v0.7.1
Dec 19 19:01:54.200 INFO [stderr]     Checking failure v0.1.2
Dec 19 19:01:54.845 INFO [stderr]     Checking dotenv v0.13.0
Dec 19 19:02:00.271 INFO [stderr]    Compiling ring v0.11.0
Dec 19 19:02:00.424 INFO [stderr] error[E0599]: no variant named `concat` found for type `syntax::tokenstream::TokenStream` in the current scope
Dec 19 19:02:00.424 INFO [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/pear_codegen-0.0.20/src/lib.rs:330:54
Dec 19 19:02:00.424 INFO [stderr]     |
Dec 19 19:02:00.424 INFO [stderr] 330 |                 mac.node.tts = ThinTokenStream::from(TokenStream::concat(streams));
Dec 19 19:02:00.424 INFO [stderr]     |                                                      ^^^^^^^^^^^^^^^^^^^ variant not found in `syntax::tokenstream::TokenStream`
Dec 19 19:02:00.424 INFO [stderr] 
Dec 19 19:02:00.760 INFO [stderr] error: aborting due to previous error
Dec 19 19:02:00.760 INFO [stderr] 
Dec 19 19:02:00.760 INFO [stderr] For more information about this error, try `rustc --explain E0599`.
Dec 19 19:02:00.836 INFO [stderr] error: Could not compile `pear_codegen`.
Dec 19 19:02:00.836 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 19 19:02:41.860 INFO [stderr] error: build failed
Dec 19 19:02:42.134 INFO running `"docker" "inspect" "70a66b332acf81c73e4da15e7fd53e1f8e93479b6d54d988eb5acb034005d3bf"`
Dec 19 19:02:42.276 INFO running `"docker" "rm" "-f" "70a66b332acf81c73e4da15e7fd53e1f8e93479b6d54d988eb5acb034005d3bf"`
Dec 19 19:02:42.492 INFO [stdout] 70a66b332acf81c73e4da15e7fd53e1f8e93479b6d54d988eb5acb034005d3bf