Dec 18 12:57:50.412 INFO checking plex-0.2.3 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 12:57:50.413 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/plex/0.2.3:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 12:57:50.577 INFO [stdout] 768cb659214ac0113ac5c41896a54dfad3a375937b2427e3da96b86410ee83ba
Dec 18 12:57:50.582 INFO running `"docker" "start" "-a" "768cb659214ac0113ac5c41896a54dfad3a375937b2427e3da96b86410ee83ba"`
Dec 18 12:57:51.292 INFO [stderr]    Compiling bit-vec v0.4.4
Dec 18 12:57:51.292 INFO [stderr]    Compiling vec_map v0.6.0
Dec 18 12:57:51.304 INFO [stderr]    Compiling lalr v0.0.2
Dec 18 12:57:51.324 INFO [stderr]     Checking proc-macro2 v0.4.24
Dec 18 12:57:51.324 INFO [stderr]     Checking redfa v0.0.2
Dec 18 12:57:51.324 INFO [stderr]    Compiling syn v0.14.9
Dec 18 12:57:53.932 INFO [stderr]    Compiling bit-set v0.4.0
Dec 18 12:57:54.656 INFO [stderr]     Checking quote v0.6.10
Dec 18 12:58:07.348 INFO [stderr]     Checking plex v0.2.3 (/opt/crater/workdir)
Dec 18 12:58:33.620 INFO [stderr] error[E0557]: feature has been removed
Dec 18 12:58:33.620 INFO [stderr]  --> examples/demo.rs:1:12
Dec 18 12:58:33.620 INFO [stderr]   |
Dec 18 12:58:33.620 INFO [stderr] 1 | #![feature(proc_macro_gen)]
Dec 18 12:58:33.620 INFO [stderr]   |            ^^^^^^^^^^^^^^
Dec 18 12:58:33.620 INFO [stderr]   |
Dec 18 12:58:33.620 INFO [stderr] note: subsumed by `#![feature(proc_macro_hygiene)]`
Dec 18 12:58:33.620 INFO [stderr]  --> examples/demo.rs:1:12
Dec 18 12:58:33.620 INFO [stderr]   |
Dec 18 12:58:33.620 INFO [stderr] 1 | #![feature(proc_macro_gen)]
Dec 18 12:58:33.620 INFO [stderr]   |            ^^^^^^^^^^^^^^
Dec 18 12:58:33.620 INFO [stderr] 
Dec 18 12:58:33.964 INFO [stderr] error[E0658]: procedural macros cannot expand to macro definitions (see issue #54727)
Dec 18 12:58:33.964 INFO [stderr]    --> examples/demo.rs:142:5
Dec 18 12:58:33.964 INFO [stderr]     |
Dec 18 12:58:33.964 INFO [stderr] 142 | /     parser! {
Dec 18 12:58:33.964 INFO [stderr] 143 | |         fn parse_(Token, Span);
Dec 18 12:58:33.964 INFO [stderr] 144 | |
Dec 18 12:58:33.964 INFO [stderr] 145 | |         // combine two spans
Dec 18 12:58:33.964 INFO [stderr] ...   |
Dec 18 12:58:33.964 INFO [stderr] 212 | |         }
Dec 18 12:58:33.964 INFO [stderr] 213 | |     }
Dec 18 12:58:33.964 INFO [stderr]     | |_____^
Dec 18 12:58:33.964 INFO [stderr]     |
Dec 18 12:58:33.964 INFO [stderr]     = help: add #![feature(proc_macro_hygiene)] to the crate attributes to enable
Dec 18 12:58:33.964 INFO [stderr] 
Dec 18 12:58:33.972 INFO [stderr] error: aborting due to 2 previous errors
Dec 18 12:58:33.972 INFO [stderr] 
Dec 18 12:58:33.972 INFO [stderr] Some errors occurred: E0557, E0658.
Dec 18 12:58:33.972 INFO [stderr] For more information about an error, try `rustc --explain E0557`.
Dec 18 12:58:33.979 INFO [stderr] error: Could not compile `plex`.
Dec 18 12:58:33.979 INFO [stderr] 
Dec 18 12:58:33.979 INFO [stderr] To learn more, run the command again with --verbose.
Dec 18 12:58:34.352 INFO running `"docker" "inspect" "768cb659214ac0113ac5c41896a54dfad3a375937b2427e3da96b86410ee83ba"`
Dec 18 12:58:34.498 INFO running `"docker" "rm" "-f" "768cb659214ac0113ac5c41896a54dfad3a375937b2427e3da96b86410ee83ba"`
Dec 18 12:58:34.700 INFO [stdout] 768cb659214ac0113ac5c41896a54dfad3a375937b2427e3da96b86410ee83ba