Dec 19 10:58:19.695 INFO checking piedoom/kaiwa against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 10:58:19.695 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/piedoom/kaiwa:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 10:58:19.920 INFO [stdout] e8d858f5049ddefe2696bb93b2fe40466d98d9ce4012a9efb6901e7eba693823
Dec 19 10:58:19.920 INFO running `"docker" "start" "-a" "e8d858f5049ddefe2696bb93b2fe40466d98d9ce4012a9efb6901e7eba693823"`
Dec 19 10:58:20.744 INFO [stderr]    Compiling serde v1.0.78
Dec 19 10:58:20.745 INFO [stderr]     Checking toml v0.4.6
Dec 19 10:58:20.745 INFO [stderr]    Compiling pear_codegen v0.0.20
Dec 19 10:58:20.745 INFO [stderr]     Checking serde_json v1.0.27
Dec 19 10:58:20.758 INFO [stderr]    Compiling diesel_derives v1.3.0
Dec 19 10:58:20.758 INFO [stderr]    Compiling hyper v0.10.13
Dec 19 10:58:20.758 INFO [stderr]     Checking chrono v0.4.6
Dec 19 10:58:28.828 INFO [stderr] error[E0599]: no variant named `concat` found for type `syntax::tokenstream::TokenStream` in the current scope
Dec 19 10:58:28.829 INFO [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/pear_codegen-0.0.20/src/lib.rs:330:54
Dec 19 10:58:28.829 INFO [stderr]     |
Dec 19 10:58:28.829 INFO [stderr] 330 |                 mac.node.tts = ThinTokenStream::from(TokenStream::concat(streams));
Dec 19 10:58:28.830 INFO [stderr]     |                                                      ^^^^^^^^^^^^^^^^^^^ variant not found in `syntax::tokenstream::TokenStream`
Dec 19 10:58:28.830 INFO [stderr] 
Dec 19 10:58:29.168 INFO [stderr] error: aborting due to previous error
Dec 19 10:58:29.196 INFO [stderr] 
Dec 19 10:58:29.196 INFO [stderr] For more information about this error, try `rustc --explain E0599`.
Dec 19 10:58:29.316 INFO [stderr] error: Could not compile `pear_codegen`.
Dec 19 10:58:29.316 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 19 10:58:48.701 INFO [stderr] error: build failed
Dec 19 10:58:49.144 INFO running `"docker" "inspect" "e8d858f5049ddefe2696bb93b2fe40466d98d9ce4012a9efb6901e7eba693823"`
Dec 19 10:58:49.298 INFO running `"docker" "rm" "-f" "e8d858f5049ddefe2696bb93b2fe40466d98d9ce4012a9efb6901e7eba693823"`
Dec 19 10:58:49.607 INFO [stdout] e8d858f5049ddefe2696bb93b2fe40466d98d9ce4012a9efb6901e7eba693823