Dec 02 17:29:24.361 INFO testing serde-pickle-0.4.1 against 1.30.1 for beta-1.31-5
Dec 02 17:29:24.361 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-5/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/beta-1.31-5/1.30.1:/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 +1.30.1 build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 17:29:24.829 INFO [stdout] e52ea76563eea6f1eb921ce6a226c2b1a65115cb046d3969c43e4f23912dbd32
Dec 02 17:29:24.836 INFO running `"docker" "start" "-a" "e52ea76563eea6f1eb921ce6a226c2b1a65115cb046d3969c43e4f23912dbd32"`
Dec 02 17:29:26.015 INFO [stderr] usermod: no changes
Dec 02 17:29:26.171 INFO [stderr]    Compiling iter-read v0.1.0
Dec 02 17:29:26.212 INFO [stderr]    Compiling num-bigint v0.1.44
Dec 02 17:29:30.007 INFO [stderr]    Compiling serde-pickle v0.4.1 (/source)
Dec 02 17:29:34.691 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.64s
Dec 02 17:29:34.703 INFO [stderr] su: No module specific data is present
Dec 02 17:29:35.555 INFO running `"docker" "inspect" "e52ea76563eea6f1eb921ce6a226c2b1a65115cb046d3969c43e4f23912dbd32"`
Dec 02 17:29:35.875 INFO running `"docker" "rm" "-f" "e52ea76563eea6f1eb921ce6a226c2b1a65115cb046d3969c43e4f23912dbd32"`
Dec 02 17:29:36.164 INFO [stdout] e52ea76563eea6f1eb921ce6a226c2b1a65115cb046d3969c43e4f23912dbd32
Dec 02 17:29:36.169 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-5/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/beta-1.31-5/1.30.1:/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 +1.30.1 test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 17:29:36.579 INFO [stdout] ccda395be400c13163332c0f4917ccc640621944d344df60b9102eb904d40cf4
Dec 02 17:29:36.587 INFO running `"docker" "start" "-a" "ccda395be400c13163332c0f4917ccc640621944d344df60b9102eb904d40cf4"`
Dec 02 17:29:37.662 INFO [stderr] usermod: no changes
Dec 02 17:29:37.835 INFO [stderr]    Compiling serde-pickle v0.4.1 (/source)
Dec 02 17:29:42.091 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 17:29:42.091 INFO [stderr]   --> src/lib.rs:49:19
Dec 02 17:29:42.091 INFO [stderr]    |
Dec 02 17:29:42.091 INFO [stderr] 49 | #![cfg_attr(test, feature(test))]
Dec 02 17:29:42.091 INFO [stderr]    |                   ^^^^^^^^^^^^^^
Dec 02 17:29:42.091 INFO [stderr] 
Dec 02 17:29:42.195 INFO [stderr] error: aborting due to previous error
Dec 02 17:29:42.195 INFO [stderr] 
Dec 02 17:29:42.195 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 17:29:42.223 INFO [stderr] error: Could not compile `serde-pickle`.
Dec 02 17:29:42.223 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 02 17:29:43.032 INFO [stderr] error: build failed
Dec 02 17:29:43.039 INFO [stderr] su: No module specific data is present
Dec 02 17:29:43.643 INFO running `"docker" "inspect" "ccda395be400c13163332c0f4917ccc640621944d344df60b9102eb904d40cf4"`
Dec 02 17:29:43.923 INFO running `"docker" "rm" "-f" "ccda395be400c13163332c0f4917ccc640621944d344df60b9102eb904d40cf4"`
Dec 02 17:29:44.231 INFO [stdout] ccda395be400c13163332c0f4917ccc640621944d344df60b9102eb904d40cf4