Dec 05 11:31:56.788 INFO checking jens-0.4.2 against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 11:31:56.788 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-5/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-alt check --frozen --all --all-targets" "-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 05 11:31:57.255 INFO [stdout] e62e40178521f1f63e72ec095aecddf7d2b3f6c766dd50b351484d72f0fdb4e4
Dec 05 11:31:57.257 INFO running `"docker" "start" "-a" "e62e40178521f1f63e72ec095aecddf7d2b3f6c766dd50b351484d72f0fdb4e4"`
Dec 05 11:31:58.630 INFO [stderr] usermod: no changes
Dec 05 11:31:58.746 INFO [stderr]     Checking jens v0.4.2 (/source)
Dec 05 11:31:59.939 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 11:31:59.939 INFO [stderr]    --> src/block.rs:129:17
Dec 05 11:31:59.939 INFO [stderr]     |
Dec 05 11:31:59.939 INFO [stderr] 129 |                 write!(f, "\n{}", prefix);
Dec 05 11:31:59.939 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 11:31:59.939 INFO [stderr]     |
Dec 05 11:31:59.939 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 05 11:31:59.939 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 11:31:59.939 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 05 11:31:59.939 INFO [stderr] 
Dec 05 11:32:00.398 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 11:32:00.399 INFO [stderr]    --> src/block.rs:129:17
Dec 05 11:32:00.399 INFO [stderr]     |
Dec 05 11:32:00.399 INFO [stderr] 129 |                 write!(f, "\n{}", prefix);
Dec 05 11:32:00.399 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 11:32:00.399 INFO [stderr]     |
Dec 05 11:32:00.399 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 05 11:32:00.399 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 11:32:00.399 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 05 11:32:00.399 INFO [stderr] 
Dec 05 11:32:00.399 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 11:32:00.399 INFO [stderr]    --> src/block.rs:257:9
Dec 05 11:32:00.399 INFO [stderr]     |
Dec 05 11:32:00.399 INFO [stderr] 257 |         write!(&mut s, "{}", function);
Dec 05 11:32:00.399 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 11:32:00.399 INFO [stderr]     |
Dec 05 11:32:00.399 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 11:32:00.399 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 05 11:32:00.399 INFO [stderr] 
Dec 05 11:32:01.259 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.58s
Dec 05 11:32:01.259 INFO [stderr] su: No module specific data is present
Dec 05 11:32:01.876 INFO running `"docker" "inspect" "e62e40178521f1f63e72ec095aecddf7d2b3f6c766dd50b351484d72f0fdb4e4"`
Dec 05 11:32:02.227 INFO running `"docker" "rm" "-f" "e62e40178521f1f63e72ec095aecddf7d2b3f6c766dd50b351484d72f0fdb4e4"`
Dec 05 11:32:02.527 INFO [stdout] e62e40178521f1f63e72ec095aecddf7d2b3f6c766dd50b351484d72f0fdb4e4