Dec 05 04:58:00.203 INFO checking ubend-0.2.1 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 04:58:00.203 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/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 04:58:00.491 INFO [stdout] c29fe29631709220f6bbe8a848e27f7f85900752bad42632ff8a6293ec6e08a1
Dec 05 04:58:00.496 INFO running `"docker" "start" "-a" "c29fe29631709220f6bbe8a848e27f7f85900752bad42632ff8a6293ec6e08a1"`
Dec 05 04:58:01.235 INFO [stderr] usermod: no changes
Dec 05 04:58:01.291 INFO [stderr]    Compiling libc v0.2.44
Dec 05 04:58:03.679 INFO [stderr]     Checking ubend v0.2.1 (/source)
Dec 05 04:58:05.400 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 04:58:05.400 INFO [stderr]    --> tests/main.rs:180:3
Dec 05 04:58:05.400 INFO [stderr]     |
Dec 05 04:58:05.400 INFO [stderr] 180 |         write!(stream, "hello world");
Dec 05 04:58:05.400 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 04:58:05.400 INFO [stderr]     |
Dec 05 04:58:05.400 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 05 04:58:05.400 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 04:58:05.400 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 04:58:05.400 INFO [stderr] 
Dec 05 04:58:05.407 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 04:58:05.407 INFO [stderr]    --> tests/main.rs:211:3
Dec 05 04:58:05.407 INFO [stderr]     |
Dec 05 04:58:05.407 INFO [stderr] 211 |         write!(stream, "spam\neggs\nspam spam\n");
Dec 05 04:58:05.407 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 04:58:05.407 INFO [stderr]     |
Dec 05 04:58:05.407 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 04:58:05.407 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 04:58:05.407 INFO [stderr] 
Dec 05 04:58:05.443 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.17s
Dec 05 04:58:05.443 INFO [stderr] su: No module specific data is present
Dec 05 04:58:06.529 INFO running `"docker" "inspect" "c29fe29631709220f6bbe8a848e27f7f85900752bad42632ff8a6293ec6e08a1"`
Dec 05 04:58:06.704 INFO running `"docker" "rm" "-f" "c29fe29631709220f6bbe8a848e27f7f85900752bad42632ff8a6293ec6e08a1"`
Dec 05 04:58:06.783 INFO [stdout] c29fe29631709220f6bbe8a848e27f7f85900752bad42632ff8a6293ec6e08a1