Dec 19 19:06:30.115 INFO checking chenghsienwen/hello-rocket against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 19:06:30.115 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-3/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/chenghsienwen/hello-rocket:/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 19:06:30.342 INFO [stdout] 3e5b29a5c703448a7732d1b4f568281deb64c3d9cd4e832aeac6b8cd05601d03
Dec 19 19:06:30.364 INFO running `"docker" "start" "-a" "3e5b29a5c703448a7732d1b4f568281deb64c3d9cd4e832aeac6b8cd05601d03"`
Dec 19 19:06:31.241 INFO [stderr]    Compiling proc-macro2 v0.4.14
Dec 19 19:06:31.260 INFO [stderr]    Compiling pear_codegen v0.0.20
Dec 19 19:06:31.260 INFO [stderr]    Compiling ring v0.11.0
Dec 19 19:06:38.376 INFO [stderr]    Compiling quote v0.6.8
Dec 19 19:06:38.796 INFO [stderr] error[E0599]: no variant named `concat` found for type `syntax::tokenstream::TokenStream` in the current scope
Dec 19 19:06:38.796 INFO [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/pear_codegen-0.0.20/src/lib.rs:330:54
Dec 19 19:06:38.796 INFO [stderr]     |
Dec 19 19:06:38.796 INFO [stderr] 330 |                 mac.node.tts = ThinTokenStream::from(TokenStream::concat(streams));
Dec 19 19:06:38.796 INFO [stderr]     |                                                      ^^^^^^^^^^^^^^^^^^^ variant not found in `syntax::tokenstream::TokenStream`
Dec 19 19:06:38.796 INFO [stderr] 
Dec 19 19:06:38.924 INFO [stderr] error: aborting due to previous error
Dec 19 19:06:38.924 INFO [stderr] 
Dec 19 19:06:38.924 INFO [stderr] For more information about this error, try `rustc --explain E0599`.
Dec 19 19:06:38.976 INFO [stderr] error: Could not compile `pear_codegen`.
Dec 19 19:06:38.976 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 19 19:06:41.996 INFO [stderr] error: build failed
Dec 19 19:06:42.689 INFO running `"docker" "inspect" "3e5b29a5c703448a7732d1b4f568281deb64c3d9cd4e832aeac6b8cd05601d03"`
Dec 19 19:06:43.184 INFO running `"docker" "rm" "-f" "3e5b29a5c703448a7732d1b4f568281deb64c3d9cd4e832aeac6b8cd05601d03"`
Dec 19 19:06:43.477 INFO [stdout] 3e5b29a5c703448a7732d1b4f568281deb64c3d9cd4e832aeac6b8cd05601d03