Dec 07 04:41:32.544 INFO testing persistentcache-0.1.6 against try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468 for pr-56514
Dec 07 04:41:32.544 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-6/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 04:41:32.804 INFO [stdout] d88a4a4f536506e32d18b199d5a8a8f51898feca1301495464b4dcd12d42f548
Dec 07 04:41:32.808 INFO running `"docker" "start" "-a" "d88a4a4f536506e32d18b199d5a8a8f51898feca1301495464b4dcd12d42f548"`
Dec 07 04:41:33.513 INFO [stderr] usermod: no changes
Dec 07 04:41:33.548 INFO [stderr] warning: only one of `license` or `license-file` is necessary
Dec 07 04:41:33.770 INFO [stderr]    Compiling proc-macro2 v0.1.10
Dec 07 04:41:33.774 INFO [stderr]    Compiling redis v0.8.0
Dec 07 04:41:37.553 INFO [stderr]    Compiling futures-await-quote v0.4.0
Dec 07 04:41:39.083 INFO [stderr]    Compiling futures-await-synom v0.12.0
Dec 07 04:41:43.749 INFO [stderr]    Compiling futures-await-syn v0.12.0
Dec 07 04:41:56.606 INFO [stderr]    Compiling persistentcache_procmacro v0.0.3
Dec 07 04:41:58.861 INFO [stderr]    Compiling persistentcache v0.1.6 (/source)
Dec 07 04:41:58.956 INFO [stderr] error[E0557]: feature has been removed
Dec 07 04:41:58.956 INFO [stderr]    --> src/lib.rs:246:12
Dec 07 04:41:58.956 INFO [stderr]     |
Dec 07 04:41:58.956 INFO [stderr] 246 | #![feature(proc_macro_gen)]
Dec 07 04:41:58.956 INFO [stderr]     |            ^^^^^^^^^^^^^^
Dec 07 04:41:58.956 INFO [stderr]     |
Dec 07 04:41:58.956 INFO [stderr] note: subsumed by `#![feature(proc_macro_hygiene)]`
Dec 07 04:41:58.956 INFO [stderr]    --> src/lib.rs:246:12
Dec 07 04:41:58.956 INFO [stderr]     |
Dec 07 04:41:58.956 INFO [stderr] 246 | #![feature(proc_macro_gen)]
Dec 07 04:41:58.956 INFO [stderr]     |            ^^^^^^^^^^^^^^
Dec 07 04:41:58.956 INFO [stderr] 
Dec 07 04:42:00.901 INFO [stderr] error: aborting due to previous error
Dec 07 04:42:00.901 INFO [stderr] 
Dec 07 04:42:00.901 INFO [stderr] For more information about this error, try `rustc --explain E0557`.
Dec 07 04:42:00.916 INFO [stderr] error: Could not compile `persistentcache`.
Dec 07 04:42:00.916 INFO [stderr] 
Dec 07 04:42:00.916 INFO [stderr] To learn more, run the command again with --verbose.
Dec 07 04:42:00.916 INFO [stderr] su: No module specific data is present
Dec 07 04:42:01.486 INFO running `"docker" "inspect" "d88a4a4f536506e32d18b199d5a8a8f51898feca1301495464b4dcd12d42f548"`
Dec 07 04:42:01.650 INFO running `"docker" "rm" "-f" "d88a4a4f536506e32d18b199d5a8a8f51898feca1301495464b4dcd12d42f548"`
Dec 07 04:42:01.878 INFO [stdout] d88a4a4f536506e32d18b199d5a8a8f51898feca1301495464b4dcd12d42f548