Dec 18 08:52:03.017 INFO checking zopen-0.3.1 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 08:52:03.017 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/zopen/0.3.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 08:52:03.521 INFO [stdout] 5a27fd40da63ed7f707dc54d38d67bac6a97cd0cfd61fb425d46b880628d3790
Dec 18 08:52:03.523 INFO running `"docker" "start" "-a" "5a27fd40da63ed7f707dc54d38d67bac6a97cd0cfd61fb425d46b880628d3790"`
Dec 18 08:52:05.601 INFO [stderr]     Checking zopen v0.3.1 (/opt/crater/workdir)
Dec 18 08:52:05.655 INFO [stderr]     Checking tempfile v3.0.5
Dec 18 08:52:07.308 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 08:52:07.308 INFO [stderr]    --> src/tool.rs:189:13
Dec 18 08:52:07.308 INFO [stderr]     |
Dec 18 08:52:07.308 INFO [stderr] 189 |             writeln!(output, "Welt");
Dec 18 08:52:07.308 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 08:52:07.308 INFO [stderr]     |
Dec 18 08:52:07.308 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 18 08:52:07.308 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 08:52:07.308 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 18 08:52:07.308 INFO [stderr] 
Dec 18 08:52:07.308 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 08:52:07.308 INFO [stderr]    --> src/tool.rs:190:13
Dec 18 08:52:07.308 INFO [stderr]     |
Dec 18 08:52:07.308 INFO [stderr] 190 |             writeln!(output, "Hallo");
Dec 18 08:52:07.308 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 08:52:07.308 INFO [stderr]     |
Dec 18 08:52:07.308 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 08:52:07.308 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 18 08:52:07.308 INFO [stderr] 
Dec 18 08:52:07.359 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.94s
Dec 18 08:52:07.942 INFO running `"docker" "inspect" "5a27fd40da63ed7f707dc54d38d67bac6a97cd0cfd61fb425d46b880628d3790"`
Dec 18 08:52:08.211 INFO running `"docker" "rm" "-f" "5a27fd40da63ed7f707dc54d38d67bac6a97cd0cfd61fb425d46b880628d3790"`
Dec 18 08:52:08.576 INFO [stdout] 5a27fd40da63ed7f707dc54d38d67bac6a97cd0cfd61fb425d46b880628d3790