Dec 04 12:40:07.235 INFO checking panzi/rust-ubend against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 12:40:07.236 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-7/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 04 12:40:07.633 INFO [stdout] 3caa21aa464b7ccc6b992bc8a1edd67767d9602db60f5d8b64d7d34958f19893
Dec 04 12:40:07.639 INFO running `"docker" "start" "-a" "3caa21aa464b7ccc6b992bc8a1edd67767d9602db60f5d8b64d7d34958f19893"`
Dec 04 12:40:08.722 INFO [stderr] usermod: no changes
Dec 04 12:40:08.803 INFO [stderr]     Checking ubend v0.2.1 (/source)
Dec 04 12:40:10.379 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 12:40:10.379 INFO [stderr]    --> tests/main.rs:180:3
Dec 04 12:40:10.379 INFO [stderr]     |
Dec 04 12:40:10.379 INFO [stderr] 180 |         write!(stream, "hello world");
Dec 04 12:40:10.379 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 12:40:10.379 INFO [stderr]     |
Dec 04 12:40:10.379 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 12:40:10.379 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 12:40:10.379 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 12:40:10.379 INFO [stderr] 
Dec 04 12:40:10.379 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 12:40:10.379 INFO [stderr]    --> tests/main.rs:211:3
Dec 04 12:40:10.379 INFO [stderr]     |
Dec 04 12:40:10.379 INFO [stderr] 211 |         write!(stream, "spam\neggs\nspam spam\n");
Dec 04 12:40:10.379 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 12:40:10.379 INFO [stderr]     |
Dec 04 12:40:10.379 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 12:40:10.379 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 12:40:10.379 INFO [stderr] 
Dec 04 12:40:10.415 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.67s
Dec 04 12:40:10.415 INFO [stderr] su: No module specific data is present
Dec 04 12:40:10.951 INFO running `"docker" "inspect" "3caa21aa464b7ccc6b992bc8a1edd67767d9602db60f5d8b64d7d34958f19893"`
Dec 04 12:40:11.238 INFO running `"docker" "rm" "-f" "3caa21aa464b7ccc6b992bc8a1edd67767d9602db60f5d8b64d7d34958f19893"`
Dec 04 12:40:11.476 INFO [stdout] 3caa21aa464b7ccc6b992bc8a1edd67767d9602db60f5d8b64d7d34958f19893