Dec 15 01:54:33.506 INFO testing persistentcache-0.1.6 against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 15 01:54:33.507 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-5/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 15 01:54:33.864 INFO [stdout] 89a5b599da2edad63944cd1c5d7d8f278b63670f75cde9e19e344632cd18d5fd
Dec 15 01:54:33.866 INFO running `"docker" "start" "-a" "89a5b599da2edad63944cd1c5d7d8f278b63670f75cde9e19e344632cd18d5fd"`
Dec 15 01:54:35.834 INFO [stderr] usermod: no changes
Dec 15 01:54:35.891 INFO [stderr] warning: only one of `license` or `license-file` is necessary
Dec 15 01:54:36.050 INFO [stderr]    Compiling futures-await-quote v0.4.0
Dec 15 01:54:37.375 INFO [stderr]    Compiling futures-await-synom v0.12.0
Dec 15 01:54:40.140 INFO [stderr]    Compiling futures-await-syn v0.12.0
Dec 15 01:54:54.951 INFO [stderr]    Compiling persistentcache_procmacro v0.0.3
Dec 15 01:54:57.312 INFO [stderr]    Compiling persistentcache v0.1.6 (/source)
Dec 15 01:54:57.383 INFO [stderr] error[E0557]: feature has been removed
Dec 15 01:54:57.383 INFO [stderr]    --> src/lib.rs:246:12
Dec 15 01:54:57.383 INFO [stderr]     |
Dec 15 01:54:57.383 INFO [stderr] 246 | #![feature(proc_macro_gen)]
Dec 15 01:54:57.383 INFO [stderr]     |            ^^^^^^^^^^^^^^
Dec 15 01:54:57.383 INFO [stderr]     |
Dec 15 01:54:57.383 INFO [stderr] note: subsumed by `#![feature(proc_macro_hygiene)]`
Dec 15 01:54:57.383 INFO [stderr]    --> src/lib.rs:246:12
Dec 15 01:54:57.383 INFO [stderr]     |
Dec 15 01:54:57.383 INFO [stderr] 246 | #![feature(proc_macro_gen)]
Dec 15 01:54:57.383 INFO [stderr]     |            ^^^^^^^^^^^^^^
Dec 15 01:54:57.383 INFO [stderr] 
Dec 15 01:54:59.483 INFO [stderr] error: aborting due to previous error
Dec 15 01:54:59.483 INFO [stderr] 
Dec 15 01:54:59.483 INFO [stderr] For more information about this error, try `rustc --explain E0557`.
Dec 15 01:54:59.495 INFO [stderr] error: Could not compile `persistentcache`.
Dec 15 01:54:59.495 INFO [stderr] 
Dec 15 01:54:59.495 INFO [stderr] To learn more, run the command again with --verbose.
Dec 15 01:54:59.496 INFO [stderr] su: No module specific data is present
Dec 15 01:55:00.257 INFO running `"docker" "inspect" "89a5b599da2edad63944cd1c5d7d8f278b63670f75cde9e19e344632cd18d5fd"`
Dec 15 01:55:00.458 INFO running `"docker" "rm" "-f" "89a5b599da2edad63944cd1c5d7d8f278b63670f75cde9e19e344632cd18d5fd"`
Dec 15 01:55:00.719 INFO [stdout] 89a5b599da2edad63944cd1c5d7d8f278b63670f75cde9e19e344632cd18d5fd