Dec 18 06:37:49.996 INFO checking Mahtiah/npi_calculatrice against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 06:37:49.997 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/Mahtiah/npi_calculatrice:/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 06:37:53.815 INFO [stdout] 471ee7104c037056a8fce8547890362cd3702b5c049c26917ea44894b4da7e6c
Dec 18 06:37:53.818 INFO running `"docker" "start" "-a" "471ee7104c037056a8fce8547890362cd3702b5c049c26917ea44894b4da7e6c"`
Dec 18 06:37:56.232 INFO [stderr]     Checking npi_calculatrice v0.1.0 (/opt/crater/workdir)
Dec 18 06:37:56.526 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 06:37:56.526 INFO [stderr]   --> src/main.rs:55:5
Dec 18 06:37:56.526 INFO [stderr]    |
Dec 18 06:37:56.526 INFO [stderr] 55 |     std::io::stdout().flush();
Dec 18 06:37:56.526 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:37:56.526 INFO [stderr]    |
Dec 18 06:37:56.526 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 06:37:56.526 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 06:37:56.526 INFO [stderr] 
Dec 18 06:37:56.533 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 06:37:56.533 INFO [stderr]   --> src/main.rs:55:5
Dec 18 06:37:56.533 INFO [stderr]    |
Dec 18 06:37:56.533 INFO [stderr] 55 |     std::io::stdout().flush();
Dec 18 06:37:56.533 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:37:56.533 INFO [stderr]    |
Dec 18 06:37:56.533 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 06:37:56.533 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 06:37:56.533 INFO [stderr] 
Dec 18 06:37:56.577 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
Dec 18 06:37:57.448 INFO running `"docker" "inspect" "471ee7104c037056a8fce8547890362cd3702b5c049c26917ea44894b4da7e6c"`
Dec 18 06:37:57.570 INFO running `"docker" "rm" "-f" "471ee7104c037056a8fce8547890362cd3702b5c049c26917ea44894b4da7e6c"`
Dec 18 06:37:59.010 INFO [stdout] 471ee7104c037056a8fce8547890362cd3702b5c049c26917ea44894b4da7e6c