Nov 28 11:04:59.425 INFO documenting persistentcache-0.1.6 against master#6bfb46e4ac9a2704f06de1a2ff7a4612cd70c8cb for pr-55318
Nov 28 11:04:59.425 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55318/worker-2/master#6bfb46e4ac9a2704f06de1a2ff7a4612cd70c8cb:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-55318/master#6bfb46e4ac9a2704f06de1a2ff7a4612cd70c8cb:/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 +6bfb46e4ac9a2704f06de1a2ff7a4612cd70c8cb-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 11:04:59.653 INFO [stdout] 8912fdd1dc28c946fe9d532dd8865b770fc558ea4faadaac2c1e88f711800354
Nov 28 11:04:59.655 INFO running `"docker" "start" "-a" "8912fdd1dc28c946fe9d532dd8865b770fc558ea4faadaac2c1e88f711800354"`
Nov 28 11:05:00.607 INFO [stderr] usermod: no changes
Nov 28 11:05:00.774 INFO [stderr] warning: only one of `license` or `license-file` is necessary
Nov 28 11:05:00.883 INFO [stderr]    Compiling futures-await-quote v0.4.0
Nov 28 11:05:00.883 INFO [stderr]    Compiling bincode v1.0.1
Nov 28 11:05:00.883 INFO [stderr]     Checking redis v0.8.0
Nov 28 11:05:03.995 INFO [stderr]    Compiling futures-await-synom v0.12.0
Nov 28 11:05:07.507 INFO [stderr]    Compiling futures-await-syn v0.12.0
Nov 28 11:05:18.522 INFO [stderr]    Compiling persistentcache_procmacro v0.0.3
Nov 28 11:05:22.042 INFO [stderr]  Documenting persistentcache v0.1.6 (/source)
Nov 28 11:05:22.097 INFO [stderr] error[E0557]: feature has been removed
Nov 28 11:05:22.097 INFO [stderr]    --> src/lib.rs:246:12
Nov 28 11:05:22.097 INFO [stderr]     |
Nov 28 11:05:22.097 INFO [stderr] 246 | #![feature(proc_macro_gen)]
Nov 28 11:05:22.097 INFO [stderr]     |            ^^^^^^^^^^^^^^
Nov 28 11:05:22.097 INFO [stderr]     |
Nov 28 11:05:22.097 INFO [stderr] note: subsumed by `#![feature(proc_macro_hygiene)]`
Nov 28 11:05:22.097 INFO [stderr]    --> src/lib.rs:246:12
Nov 28 11:05:22.097 INFO [stderr]     |
Nov 28 11:05:22.097 INFO [stderr] 246 | #![feature(proc_macro_gen)]
Nov 28 11:05:22.097 INFO [stderr]     |            ^^^^^^^^^^^^^^
Nov 28 11:05:22.097 INFO [stderr] 
Nov 28 11:05:23.063 INFO [stderr] error: Compilation failed, aborting rustdoc
Nov 28 11:05:23.063 INFO [stderr] 
Nov 28 11:05:23.093 INFO [stderr] error: Could not document `persistentcache`.
Nov 28 11:05:23.093 INFO [stderr] 
Nov 28 11:05:23.093 INFO [stderr] Caused by:
Nov 28 11:05:23.093 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-8a79e02446bcd1ad.rmeta --extern error_chain=/target/debug/deps/liberror_chain-04d0a5a72e6e00ff.rmeta --extern fs2=/target/debug/deps/libfs2-ad07279735aa1a00.rmeta --extern lazy_static=/target/debug/deps/liblazy_static-06b3d99b9ab6914a.rmeta --extern persistentcache_procmacro=/target/debug/deps/libpersistentcache_procmacro-2d17a3cce18018b4.so --extern redis=/target/debug/deps/libredis-3bd07a7ffbaec157.rmeta --extern regex=/target/debug/deps/libregex-0fae564e51c0d97c.rmeta --cap-lints=forbid` (exit code: 1)
Nov 28 11:05:23.093 INFO [stderr] su: No module specific data is present
Nov 28 11:05:23.385 INFO running `"docker" "inspect" "8912fdd1dc28c946fe9d532dd8865b770fc558ea4faadaac2c1e88f711800354"`
Nov 28 11:05:23.460 INFO running `"docker" "rm" "-f" "8912fdd1dc28c946fe9d532dd8865b770fc558ea4faadaac2c1e88f711800354"`
Nov 28 11:05:23.614 INFO [stdout] 8912fdd1dc28c946fe9d532dd8865b770fc558ea4faadaac2c1e88f711800354