Dec 17 21:30:27.613 INFO checking kevlarr/rusty-calc against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 21:30:27.613 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/kevlarr/rusty-calc:/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 17 21:30:28.104 INFO [stdout] ddd16205d6e2df039e853c095624601879a21a009aa8d4e2f2f0da9ff3667e85
Dec 17 21:30:28.108 INFO running `"docker" "start" "-a" "ddd16205d6e2df039e853c095624601879a21a009aa8d4e2f2f0da9ff3667e85"`
Dec 17 21:30:30.172 INFO [stderr]     Checking rustycalc v0.1.0 (/opt/crater/workdir)
Dec 17 21:30:30.584 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 21:30:30.584 INFO [stderr]    --> src/types/binary.rs:111:9
Dec 17 21:30:30.584 INFO [stderr]     |
Dec 17 21:30:30.584 INFO [stderr] 111 |         write!(f, "0b");
Dec 17 21:30:30.584 INFO [stderr]     |         ^^^^^^^^^^^^^^^^
Dec 17 21:30:30.584 INFO [stderr]     |
Dec 17 21:30:30.584 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 21:30:30.584 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 21:30:30.584 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 17 21:30:30.584 INFO [stderr] 
Dec 17 21:30:30.584 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 21:30:30.584 INFO [stderr]    --> src/types/binary.rs:115:17
Dec 17 21:30:30.584 INFO [stderr]     |
Dec 17 21:30:30.584 INFO [stderr] 115 |                 write!(f, "_");
Dec 17 21:30:30.584 INFO [stderr]     |                 ^^^^^^^^^^^^^^^
Dec 17 21:30:30.584 INFO [stderr]     |
Dec 17 21:30:30.584 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 21:30:30.584 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 17 21:30:30.584 INFO [stderr] 
Dec 17 21:30:31.383 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 21:30:31.383 INFO [stderr]    --> src/types/binary.rs:111:9
Dec 17 21:30:31.383 INFO [stderr]     |
Dec 17 21:30:31.383 INFO [stderr] 111 |         write!(f, "0b");
Dec 17 21:30:31.383 INFO [stderr]     |         ^^^^^^^^^^^^^^^^
Dec 17 21:30:31.383 INFO [stderr]     |
Dec 17 21:30:31.383 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 21:30:31.383 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 21:30:31.383 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 17 21:30:31.383 INFO [stderr] 
Dec 17 21:30:31.383 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 21:30:31.383 INFO [stderr]    --> src/types/binary.rs:115:17
Dec 17 21:30:31.383 INFO [stderr]     |
Dec 17 21:30:31.383 INFO [stderr] 115 |                 write!(f, "_");
Dec 17 21:30:31.383 INFO [stderr]     |                 ^^^^^^^^^^^^^^^
Dec 17 21:30:31.383 INFO [stderr]     |
Dec 17 21:30:31.383 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 21:30:31.383 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 17 21:30:31.383 INFO [stderr] 
Dec 17 21:30:31.412 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
Dec 17 21:30:32.062 INFO running `"docker" "inspect" "ddd16205d6e2df039e853c095624601879a21a009aa8d4e2f2f0da9ff3667e85"`
Dec 17 21:30:32.358 INFO running `"docker" "rm" "-f" "ddd16205d6e2df039e853c095624601879a21a009aa8d4e2f2f0da9ff3667e85"`
Dec 17 21:30:32.668 INFO [stdout] ddd16205d6e2df039e853c095624601879a21a009aa8d4e2f2f0da9ff3667e85