Dec 19 13:30:56.993 INFO checking loothood/joke against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 13:30:56.993 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/loothood/joke:/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 13:30:57.536 INFO [stdout] 2e114e54df48954f8e9d0c2c0194cc039d8d495d721828f38d9dcc722c9f88aa
Dec 19 13:30:57.542 INFO running `"docker" "start" "-a" "2e114e54df48954f8e9d0c2c0194cc039d8d495d721828f38d9dcc722c9f88aa"`
Dec 19 13:31:00.052 INFO [stderr]    Compiling matches v0.1.7
Dec 19 13:31:00.052 INFO [stderr]    Compiling regex v1.0.3
Dec 19 13:31:00.058 INFO [stderr]     Checking pest v0.3.3
Dec 19 13:31:00.071 INFO [stderr]    Compiling log v0.4.3
Dec 19 13:31:00.071 INFO [stderr]    Compiling memchr v2.0.1
Dec 19 13:31:00.081 INFO [stderr]    Compiling rocket v0.3.17
Dec 19 13:31:00.092 INFO [stderr]    Compiling rocket_codegen v0.3.17
Dec 19 13:31:00.095 INFO [stderr]    Compiling base64 v0.6.0
Dec 19 13:31:00.968 INFO [stderr]    Compiling base64 v0.9.2
Dec 19 13:31:01.212 INFO [stderr]    Compiling crossbeam-epoch v0.3.1
Dec 19 13:31:05.072 INFO [stderr]     Checking log v0.3.9
Dec 19 13:31:05.073 INFO [stderr]     Checking smallvec v0.6.4
Dec 19 13:31:05.101 INFO [stderr]    Compiling unicode-bidi v0.3.4
Dec 19 13:31:05.213 INFO [stderr]     Checking r2d2 v0.8.3
Dec 19 13:31:05.746 INFO [stderr]     Checking regex v0.2.11
Dec 19 13:31:06.072 INFO [stderr]    Compiling pear_codegen v0.0.20
Dec 19 13:31:06.962 INFO [stderr]     Checking serde_json v1.0.33
Dec 19 13:31:08.504 INFO [stderr]    Compiling crossbeam-deque v0.2.0
Dec 19 13:31:09.081 INFO [stderr]    Compiling syn v0.15.20
Dec 19 13:31:10.109 INFO [stderr]     Checking mime v0.2.6
Dec 19 13:31:14.949 INFO [stderr]     Checking diesel v1.3.3
Dec 19 13:31:14.970 INFO [stderr]    Compiling rayon-core v1.4.1
Dec 19 13:31:15.549 INFO [stderr] error[E0599]: no variant named `concat` found for type `syntax::tokenstream::TokenStream` in the current scope
Dec 19 13:31:15.549 INFO [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/pear_codegen-0.0.20/src/lib.rs:330:54
Dec 19 13:31:15.549 INFO [stderr]     |
Dec 19 13:31:15.549 INFO [stderr] 330 |                 mac.node.tts = ThinTokenStream::from(TokenStream::concat(streams));
Dec 19 13:31:15.549 INFO [stderr]     |                                                      ^^^^^^^^^^^^^^^^^^^ variant not found in `syntax::tokenstream::TokenStream`
Dec 19 13:31:15.549 INFO [stderr] 
Dec 19 13:31:15.860 INFO [stderr] error: aborting due to previous error
Dec 19 13:31:15.881 INFO [stderr] 
Dec 19 13:31:15.881 INFO [stderr] For more information about this error, try `rustc --explain E0599`.
Dec 19 13:31:15.972 INFO [stderr] error: Could not compile `pear_codegen`.
Dec 19 13:31:15.972 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 19 13:32:05.927 INFO [stderr] error: build failed
Dec 19 13:32:07.075 INFO running `"docker" "inspect" "2e114e54df48954f8e9d0c2c0194cc039d8d495d721828f38d9dcc722c9f88aa"`
Dec 19 13:32:07.378 INFO running `"docker" "rm" "-f" "2e114e54df48954f8e9d0c2c0194cc039d8d495d721828f38d9dcc722c9f88aa"`
Dec 19 13:32:07.781 INFO [stdout] 2e114e54df48954f8e9d0c2c0194cc039d8d495d721828f38d9dcc722c9f88aa