Dec 05 11:31:54.360 INFO checking jens-0.4.2 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 11:31:54.360 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-0/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 11:31:54.847 INFO [stdout] fce8f282e1bfa67e6e46d1027876d328f8d3ba90ec819fd7ea2da20af0f428e5
Dec 05 11:31:54.849 INFO running `"docker" "start" "-a" "fce8f282e1bfa67e6e46d1027876d328f8d3ba90ec819fd7ea2da20af0f428e5"`
Dec 05 11:31:56.071 INFO [stderr] usermod: no changes
Dec 05 11:31:56.183 INFO [stderr]     Checking jens v0.4.2 (/source)
Dec 05 11:31:57.559 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 11:31:57.559 INFO [stderr]    --> src/block.rs:129:17
Dec 05 11:31:57.559 INFO [stderr]     |
Dec 05 11:31:57.559 INFO [stderr] 129 |                 write!(f, "\n{}", prefix);
Dec 05 11:31:57.559 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 11:31:57.559 INFO [stderr]     |
Dec 05 11:31:57.559 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 05 11:31:57.559 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 11:31:57.559 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 11:31:57.559 INFO [stderr] 
Dec 05 11:31:57.936 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 11:31:57.936 INFO [stderr]    --> src/block.rs:129:17
Dec 05 11:31:57.936 INFO [stderr]     |
Dec 05 11:31:57.936 INFO [stderr] 129 |                 write!(f, "\n{}", prefix);
Dec 05 11:31:57.936 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 11:31:57.936 INFO [stderr]     |
Dec 05 11:31:57.936 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 05 11:31:57.936 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 11:31:57.936 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 11:31:57.936 INFO [stderr] 
Dec 05 11:31:57.941 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 11:31:57.941 INFO [stderr]    --> src/block.rs:257:9
Dec 05 11:31:57.941 INFO [stderr]     |
Dec 05 11:31:57.941 INFO [stderr] 257 |         write!(&mut s, "{}", function);
Dec 05 11:31:57.941 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 11:31:57.941 INFO [stderr]     |
Dec 05 11:31:57.941 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 11:31:57.941 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 11:31:57.941 INFO [stderr] 
Dec 05 11:31:58.907 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.81s
Dec 05 11:31:58.916 INFO [stderr] su: No module specific data is present
Dec 05 11:31:59.527 INFO running `"docker" "inspect" "fce8f282e1bfa67e6e46d1027876d328f8d3ba90ec819fd7ea2da20af0f428e5"`
Dec 05 11:31:59.938 INFO running `"docker" "rm" "-f" "fce8f282e1bfa67e6e46d1027876d328f8d3ba90ec819fd7ea2da20af0f428e5"`
Dec 05 11:32:00.231 INFO [stdout] fce8f282e1bfa67e6e46d1027876d328f8d3ba90ec819fd7ea2da20af0f428e5