Nov 28 11:04:58.967 INFO documenting persistentcache-0.1.6 against try#f5a0bd723553ea4b7556bd7087b9f0919cafb483 for pr-55318
Nov 28 11:04:58.967 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55318/worker-4/try#f5a0bd723553ea4b7556bd7087b9f0919cafb483:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55318/try#f5a0bd723553ea4b7556bd7087b9f0919cafb483:/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 +f5a0bd723553ea4b7556bd7087b9f0919cafb483-alt doc --frozen --no-deps --document-private-items" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 28 11:04:59.139 INFO [stdout] e81b628d556a014154ff323838db8e09ef120bf7059aa047369834ca14dd88bc
Nov 28 11:04:59.141 INFO running `"docker" "start" "-a" "e81b628d556a014154ff323838db8e09ef120bf7059aa047369834ca14dd88bc"`
Nov 28 11:04:59.555 INFO [stderr] usermod: no changes
Nov 28 11:04:59.625 INFO [stderr] warning: only one of `license` or `license-file` is necessary
Nov 28 11:04:59.700 INFO [stderr]    Compiling futures-await-quote v0.4.0
Nov 28 11:04:59.701 INFO [stderr]     Checking fs2 v0.4.3
Nov 28 11:04:59.702 INFO [stderr]    Compiling bincode v1.0.1
Nov 28 11:04:59.703 INFO [stderr]     Checking redis v0.8.0
Nov 28 11:05:02.711 INFO [stderr]    Compiling futures-await-synom v0.12.0
Nov 28 11:05:06.104 INFO [stderr]    Compiling futures-await-syn v0.12.0
Nov 28 11:05:17.417 INFO [stderr]    Compiling persistentcache_procmacro v0.0.3
Nov 28 11:05:20.741 INFO [stderr]  Documenting persistentcache v0.1.6 (/source)
Nov 28 11:05:20.832 INFO [stderr] error[E0557]: feature has been removed
Nov 28 11:05:20.832 INFO [stderr]    --> src/lib.rs:246:12
Nov 28 11:05:20.832 INFO [stderr]     |
Nov 28 11:05:20.832 INFO [stderr] 246 | #![feature(proc_macro_gen)]
Nov 28 11:05:20.833 INFO [stderr]     |            ^^^^^^^^^^^^^^
Nov 28 11:05:20.833 INFO [stderr]     |
Nov 28 11:05:20.833 INFO [stderr] note: subsumed by `#![feature(proc_macro_hygiene)]`
Nov 28 11:05:20.833 INFO [stderr]    --> src/lib.rs:246:12
Nov 28 11:05:20.833 INFO [stderr]     |
Nov 28 11:05:20.833 INFO [stderr] 246 | #![feature(proc_macro_gen)]
Nov 28 11:05:20.833 INFO [stderr]     |            ^^^^^^^^^^^^^^
Nov 28 11:05:20.834 INFO [stderr] 
Nov 28 11:05:21.847 INFO [stderr] error: Compilation failed, aborting rustdoc
Nov 28 11:05:21.847 INFO [stderr] 
Nov 28 11:05:21.874 INFO [stderr] error: Could not document `persistentcache`.
Nov 28 11:05:21.874 INFO [stderr] 
Nov 28 11:05:21.874 INFO [stderr] Caused by:
Nov 28 11:05:21.874 INFO [stderr]   process didn't exit successfully: `rustdoc --crate-name persistentcache src/lib.rs --color never -o /target/doc --cfg 'feature="default"' --document-private-items -L dependency=/target/debug/deps --extern bincode=/target/debug/deps/libbincode-ee6beab12aeeef14.rmeta --extern error_chain=/target/debug/deps/liberror_chain-0890cafc195450bb.rmeta --extern fs2=/target/debug/deps/libfs2-b95c3a353a34db38.rmeta --extern lazy_static=/target/debug/deps/liblazy_static-9cf2201faf1fd1a4.rmeta --extern persistentcache_procmacro=/target/debug/deps/libpersistentcache_procmacro-088d3c83a73f2e4c.so --extern redis=/target/debug/deps/libredis-dcea08d05ce8e822.rmeta --extern regex=/target/debug/deps/libregex-5021e68af5ef21cc.rmeta --cap-lints=forbid` (exit code: 1)
Nov 28 11:05:21.876 INFO [stderr] su: No module specific data is present
Nov 28 11:05:22.230 INFO running `"docker" "inspect" "e81b628d556a014154ff323838db8e09ef120bf7059aa047369834ca14dd88bc"`
Nov 28 11:05:22.372 INFO running `"docker" "rm" "-f" "e81b628d556a014154ff323838db8e09ef120bf7059aa047369834ca14dd88bc"`
Nov 28 11:05:22.597 INFO [stdout] e81b628d556a014154ff323838db8e09ef120bf7059aa047369834ca14dd88bc