Dec 04 12:40:06.950 INFO checking panzi/rust-ubend against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 12:40:06.950 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-1/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 04 12:40:07.403 INFO [stdout] f3e6d7290dd35851a97ad8c51f8ec1934384614baf0d98eec945e965150bbf8e
Dec 04 12:40:07.407 INFO running `"docker" "start" "-a" "f3e6d7290dd35851a97ad8c51f8ec1934384614baf0d98eec945e965150bbf8e"`
Dec 04 12:40:08.443 INFO [stderr] usermod: no changes
Dec 04 12:40:08.499 INFO [stderr]     Checking ubend v0.2.1 (/source)
Dec 04 12:40:09.807 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 12:40:09.807 INFO [stderr]    --> tests/main.rs:180:3
Dec 04 12:40:09.807 INFO [stderr]     |
Dec 04 12:40:09.807 INFO [stderr] 180 |         write!(stream, "hello world");
Dec 04 12:40:09.807 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 12:40:09.808 INFO [stderr]     |
Dec 04 12:40:09.808 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 12:40:09.808 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 12:40:09.808 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 04 12:40:09.808 INFO [stderr] 
Dec 04 12:40:09.808 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 12:40:09.808 INFO [stderr]    --> tests/main.rs:211:3
Dec 04 12:40:09.808 INFO [stderr]     |
Dec 04 12:40:09.808 INFO [stderr] 211 |         write!(stream, "spam\neggs\nspam spam\n");
Dec 04 12:40:09.808 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 12:40:09.808 INFO [stderr]     |
Dec 04 12:40:09.808 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 12:40:09.808 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 04 12:40:09.808 INFO [stderr] 
Dec 04 12:40:09.837 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.37s
Dec 04 12:40:09.850 INFO [stderr] su: No module specific data is present
Dec 04 12:40:10.519 INFO running `"docker" "inspect" "f3e6d7290dd35851a97ad8c51f8ec1934384614baf0d98eec945e965150bbf8e"`
Dec 04 12:40:10.829 INFO running `"docker" "rm" "-f" "f3e6d7290dd35851a97ad8c51f8ec1934384614baf0d98eec945e965150bbf8e"`
Dec 04 12:40:11.147 INFO [stdout] f3e6d7290dd35851a97ad8c51f8ec1934384614baf0d98eec945e965150bbf8e