Dec 07 04:41:33.301 INFO testing persistentcache-0.1.6 against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 07 04:41:33.301 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-2/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +906deae0790bd18681b937fe9a141a3c26cf1855-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 07 04:41:33.620 INFO [stdout] d07be5d37b46e7422f51cacce66523b12cc067362ec6b297f0612ed84f07cf7d
Dec 07 04:41:33.626 INFO running `"docker" "start" "-a" "d07be5d37b46e7422f51cacce66523b12cc067362ec6b297f0612ed84f07cf7d"`
Dec 07 04:41:34.856 INFO [stderr] usermod: no changes
Dec 07 04:41:34.888 INFO [stderr] warning: only one of `license` or `license-file` is necessary
Dec 07 04:41:35.068 INFO [stderr]    Compiling proc-macro2 v0.1.10
Dec 07 04:41:35.089 INFO [stderr]    Compiling redis v0.8.0
Dec 07 04:41:39.296 INFO [stderr]    Compiling futures-await-quote v0.4.0
Dec 07 04:41:40.782 INFO [stderr]    Compiling futures-await-synom v0.12.0
Dec 07 04:41:45.378 INFO [stderr]    Compiling futures-await-syn v0.12.0
Dec 07 04:41:57.212 INFO [stderr]    Compiling persistentcache_procmacro v0.0.3
Dec 07 04:41:59.550 INFO [stderr]    Compiling persistentcache v0.1.6 (/source)
Dec 07 04:41:59.612 INFO [stderr] error[E0557]: feature has been removed
Dec 07 04:41:59.612 INFO [stderr]    --> src/lib.rs:246:12
Dec 07 04:41:59.612 INFO [stderr]     |
Dec 07 04:41:59.612 INFO [stderr] 246 | #![feature(proc_macro_gen)]
Dec 07 04:41:59.612 INFO [stderr]     |            ^^^^^^^^^^^^^^
Dec 07 04:41:59.612 INFO [stderr]     |
Dec 07 04:41:59.612 INFO [stderr] note: subsumed by `#![feature(proc_macro_hygiene)]`
Dec 07 04:41:59.612 INFO [stderr]    --> src/lib.rs:246:12
Dec 07 04:41:59.612 INFO [stderr]     |
Dec 07 04:41:59.612 INFO [stderr] 246 | #![feature(proc_macro_gen)]
Dec 07 04:41:59.612 INFO [stderr]     |            ^^^^^^^^^^^^^^
Dec 07 04:41:59.612 INFO [stderr] 
Dec 07 04:42:01.504 INFO [stderr] error: aborting due to previous error
Dec 07 04:42:01.504 INFO [stderr] 
Dec 07 04:42:01.504 INFO [stderr] For more information about this error, try `rustc --explain E0557`.
Dec 07 04:42:01.512 INFO [stderr] error: Could not compile `persistentcache`.
Dec 07 04:42:01.512 INFO [stderr] 
Dec 07 04:42:01.512 INFO [stderr] To learn more, run the command again with --verbose.
Dec 07 04:42:01.529 INFO [stderr] su: No module specific data is present
Dec 07 04:42:02.133 INFO running `"docker" "inspect" "d07be5d37b46e7422f51cacce66523b12cc067362ec6b297f0612ed84f07cf7d"`
Dec 07 04:42:02.382 INFO running `"docker" "rm" "-f" "d07be5d37b46e7422f51cacce66523b12cc067362ec6b297f0612ed84f07cf7d"`
Dec 07 04:42:02.575 INFO [stdout] d07be5d37b46e7422f51cacce66523b12cc067362ec6b297f0612ed84f07cf7d