Dec 19 12:43:01.562 INFO checking mhishami/task1 against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 12:43:01.563 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/mhishami/task1:/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 12:43:02.002 INFO [stdout] d73e688d5aa48f144439a9c5df493deafb31d47ef51156ae3619166a27b5ee38
Dec 19 12:43:02.006 INFO running `"docker" "start" "-a" "d73e688d5aa48f144439a9c5df493deafb31d47ef51156ae3619166a27b5ee38"`
Dec 19 12:43:03.932 INFO [stderr]     Checking clap v2.27.1
Dec 19 12:43:03.936 INFO [stderr]    Compiling toml v0.4.6
Dec 19 12:43:03.936 INFO [stderr]    Compiling pear_codegen v0.0.20
Dec 19 12:43:03.944 INFO [stderr]    Compiling rayon-core v1.4.1
Dec 19 12:43:03.944 INFO [stderr]     Checking tokio-threadpool v0.1.6
Dec 19 12:43:03.944 INFO [stderr]     Checking tokio-reactor v0.1.5
Dec 19 12:43:07.796 INFO [stderr]     Checking tokio-udp v0.1.2
Dec 19 12:43:07.798 INFO [stderr]     Checking tokio-tcp v0.1.1
Dec 19 12:43:07.799 INFO [stderr]     Checking tokio-uds v0.2.1
Dec 19 12:43:10.996 INFO [stderr] error[E0599]: no variant named `concat` found for type `syntax::tokenstream::TokenStream` in the current scope
Dec 19 12:43:10.997 INFO [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/pear_codegen-0.0.20/src/lib.rs:330:54
Dec 19 12:43:10.997 INFO [stderr]     |
Dec 19 12:43:10.998 INFO [stderr] 330 |                 mac.node.tts = ThinTokenStream::from(TokenStream::concat(streams));
Dec 19 12:43:10.998 INFO [stderr]     |                                                      ^^^^^^^^^^^^^^^^^^^ variant not found in `syntax::tokenstream::TokenStream`
Dec 19 12:43:10.998 INFO [stderr] 
Dec 19 12:43:11.282 INFO [stderr]     Checking tokio-fs v0.1.3
Dec 19 12:43:11.421 INFO [stderr] error: aborting due to previous error
Dec 19 12:43:11.421 INFO [stderr] 
Dec 19 12:43:11.421 INFO [stderr] For more information about this error, try `rustc --explain E0599`.
Dec 19 12:43:11.529 INFO [stderr] error: Could not compile `pear_codegen`.
Dec 19 12:43:11.530 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 19 12:43:21.292 INFO [stderr] error: build failed
Dec 19 12:43:22.282 INFO running `"docker" "inspect" "d73e688d5aa48f144439a9c5df493deafb31d47ef51156ae3619166a27b5ee38"`
Dec 19 12:43:22.544 INFO running `"docker" "rm" "-f" "d73e688d5aa48f144439a9c5df493deafb31d47ef51156ae3619166a27b5ee38"`
Dec 19 12:43:22.868 INFO [stdout] d73e688d5aa48f144439a9c5df493deafb31d47ef51156ae3619166a27b5ee38