Dec 12 13:01:10.509 INFO checking iching-0.3.1 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 13:01:10.509 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-5/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 12 13:01:10.819 INFO [stdout] 3f3b76187e391fa2344a9e2101f7399683a66800d956dd34c28dcb2b04e3ca72
Dec 12 13:01:10.822 INFO running `"docker" "start" "-a" "3f3b76187e391fa2344a9e2101f7399683a66800d956dd34c28dcb2b04e3ca72"`
Dec 12 13:01:11.352 INFO [stderr] usermod: no changes
Dec 12 13:01:11.496 INFO [stderr]     Checking iching v0.3.1 (/source)
Dec 12 13:01:13.360 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.360 INFO [stderr]   --> src/hexagram_repository.rs:68:9
Dec 12 13:01:13.360 INFO [stderr]    |
Dec 12 13:01:13.360 INFO [stderr] 68 |         writeln!(f, "  {} (No. {})", self.get_symbol(), self.get_number());
Dec 12 13:01:13.360 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:01:13.360 INFO [stderr]    |
Dec 12 13:01:13.360 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 13:01:13.360 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.360 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 12 13:01:13.360 INFO [stderr] 
Dec 12 13:01:13.360 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.360 INFO [stderr]   --> src/hexagram_repository.rs:69:9
Dec 12 13:01:13.360 INFO [stderr]    |
Dec 12 13:01:13.360 INFO [stderr] 69 |         writeln!(f, "{} - {}", self.get_chinese_name(), self.get_localized_name());
Dec 12 13:01:13.360 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:01:13.361 INFO [stderr]    |
Dec 12 13:01:13.361 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.361 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 12 13:01:13.361 INFO [stderr] 
Dec 12 13:01:13.361 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.361 INFO [stderr]   --> src/hexagram_repository.rs:70:9
Dec 12 13:01:13.361 INFO [stderr]    |
Dec 12 13:01:13.361 INFO [stderr] 70 |         writeln!(f);
Dec 12 13:01:13.361 INFO [stderr]    |         ^^^^^^^^^^^^
Dec 12 13:01:13.361 INFO [stderr]    |
Dec 12 13:01:13.361 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.361 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 12 13:01:13.361 INFO [stderr] 
Dec 12 13:01:13.361 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.361 INFO [stderr]   --> src/hexagram_repository.rs:71:9
Dec 12 13:01:13.361 INFO [stderr]    |
Dec 12 13:01:13.361 INFO [stderr] 71 |         writeln!(f, "  Judgement:");
Dec 12 13:01:13.361 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:01:13.361 INFO [stderr]    |
Dec 12 13:01:13.361 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.364 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 12 13:01:13.364 INFO [stderr] 
Dec 12 13:01:13.364 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.364 INFO [stderr]   --> src/hexagram_repository.rs:72:9
Dec 12 13:01:13.364 INFO [stderr]    |
Dec 12 13:01:13.364 INFO [stderr] 72 |         writeln!(f, "{}", self.get_judgement());
Dec 12 13:01:13.364 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:01:13.364 INFO [stderr]    |
Dec 12 13:01:13.364 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.364 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 12 13:01:13.364 INFO [stderr] 
Dec 12 13:01:13.364 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.364 INFO [stderr]   --> src/hexagram_repository.rs:73:9
Dec 12 13:01:13.364 INFO [stderr]    |
Dec 12 13:01:13.364 INFO [stderr] 73 |         writeln!(f, "  Images:");
Dec 12 13:01:13.364 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:01:13.364 INFO [stderr]    |
Dec 12 13:01:13.364 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.364 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 12 13:01:13.364 INFO [stderr] 
Dec 12 13:01:13.364 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.364 INFO [stderr]   --> src/hexagram_repository.rs:74:9
Dec 12 13:01:13.364 INFO [stderr]    |
Dec 12 13:01:13.364 INFO [stderr] 74 |         writeln!(f, "{}", self.get_images());
Dec 12 13:01:13.364 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:01:13.364 INFO [stderr]    |
Dec 12 13:01:13.365 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.365 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 12 13:01:13.365 INFO [stderr] 
Dec 12 13:01:13.367 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.367 INFO [stderr]    --> src/trigram.rs:234:9
Dec 12 13:01:13.367 INFO [stderr]     |
Dec 12 13:01:13.367 INFO [stderr] 234 |         writeln!(f, "{} (No. {})", self.symbol(), self.number());
Dec 12 13:01:13.367 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:01:13.367 INFO [stderr]     |
Dec 12 13:01:13.367 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.367 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 12 13:01:13.367 INFO [stderr] 
Dec 12 13:01:13.367 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.367 INFO [stderr]    --> src/trigram.rs:235:9
Dec 12 13:01:13.367 INFO [stderr]     |
Dec 12 13:01:13.367 INFO [stderr] 235 |         writeln!(f, "{} - {}", self.romanized(), self.english_translation());
Dec 12 13:01:13.367 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:01:13.367 INFO [stderr]     |
Dec 12 13:01:13.367 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.367 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 12 13:01:13.367 INFO [stderr] 
Dec 12 13:01:13.367 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.367 INFO [stderr]    --> src/trigram.rs:236:9
Dec 12 13:01:13.368 INFO [stderr]     |
Dec 12 13:01:13.368 INFO [stderr] 236 |         writeln!(f);
Dec 12 13:01:13.368 INFO [stderr]     |         ^^^^^^^^^^^^
Dec 12 13:01:13.368 INFO [stderr]     |
Dec 12 13:01:13.368 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.368 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 12 13:01:13.368 INFO [stderr] 
Dec 12 13:01:13.368 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.368 INFO [stderr]    --> src/trigram.rs:237:9
Dec 12 13:01:13.368 INFO [stderr]     |
Dec 12 13:01:13.368 INFO [stderr] 237 |         writeln!(f, "Attribute: {}", self.attribute());
Dec 12 13:01:13.368 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:01:13.368 INFO [stderr]     |
Dec 12 13:01:13.368 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.368 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 12 13:01:13.368 INFO [stderr] 
Dec 12 13:01:13.368 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.368 INFO [stderr]    --> src/trigram.rs:238:9
Dec 12 13:01:13.368 INFO [stderr]     |
Dec 12 13:01:13.368 INFO [stderr] 238 |         writeln!(f, "Image in nature: {}", self.image());
Dec 12 13:01:13.368 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:01:13.368 INFO [stderr]     |
Dec 12 13:01:13.368 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.368 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 12 13:01:13.368 INFO [stderr] 
Dec 12 13:01:13.368 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.368 INFO [stderr]    --> src/trigram.rs:239:9
Dec 12 13:01:13.368 INFO [stderr]     |
Dec 12 13:01:13.368 INFO [stderr] 239 |         writeln!(f, "Family Relationship: {}", self.family_relationship());
Dec 12 13:01:13.368 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:01:13.368 INFO [stderr]     |
Dec 12 13:01:13.368 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.368 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 12 13:01:13.368 INFO [stderr] 
Dec 12 13:01:13.723 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.723 INFO [stderr]   --> src/hexagram_repository.rs:68:9
Dec 12 13:01:13.723 INFO [stderr]    |
Dec 12 13:01:13.723 INFO [stderr] 68 |         writeln!(f, "  {} (No. {})", self.get_symbol(), self.get_number());
Dec 12 13:01:13.723 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:01:13.723 INFO [stderr]    |
Dec 12 13:01:13.723 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 13:01:13.723 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.723 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 12 13:01:13.723 INFO [stderr] 
Dec 12 13:01:13.732 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.732 INFO [stderr]   --> src/hexagram_repository.rs:69:9
Dec 12 13:01:13.732 INFO [stderr]    |
Dec 12 13:01:13.732 INFO [stderr] 69 |         writeln!(f, "{} - {}", self.get_chinese_name(), self.get_localized_name());
Dec 12 13:01:13.732 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:01:13.732 INFO [stderr]    |
Dec 12 13:01:13.732 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.732 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 12 13:01:13.732 INFO [stderr] 
Dec 12 13:01:13.732 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.732 INFO [stderr]   --> src/hexagram_repository.rs:70:9
Dec 12 13:01:13.733 INFO [stderr]    |
Dec 12 13:01:13.733 INFO [stderr] 70 |         writeln!(f);
Dec 12 13:01:13.733 INFO [stderr]    |         ^^^^^^^^^^^^
Dec 12 13:01:13.736 INFO [stderr]    |
Dec 12 13:01:13.736 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.736 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 12 13:01:13.736 INFO [stderr] 
Dec 12 13:01:13.736 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.736 INFO [stderr]   --> src/hexagram_repository.rs:71:9
Dec 12 13:01:13.736 INFO [stderr]    |
Dec 12 13:01:13.736 INFO [stderr] 71 |         writeln!(f, "  Judgement:");
Dec 12 13:01:13.736 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:01:13.736 INFO [stderr]    |
Dec 12 13:01:13.736 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.736 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 12 13:01:13.736 INFO [stderr] 
Dec 12 13:01:13.736 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.736 INFO [stderr]   --> src/hexagram_repository.rs:72:9
Dec 12 13:01:13.736 INFO [stderr]    |
Dec 12 13:01:13.736 INFO [stderr] 72 |         writeln!(f, "{}", self.get_judgement());
Dec 12 13:01:13.736 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:01:13.736 INFO [stderr]    |
Dec 12 13:01:13.736 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.736 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 12 13:01:13.736 INFO [stderr] 
Dec 12 13:01:13.736 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.736 INFO [stderr]   --> src/hexagram_repository.rs:73:9
Dec 12 13:01:13.736 INFO [stderr]    |
Dec 12 13:01:13.736 INFO [stderr] 73 |         writeln!(f, "  Images:");
Dec 12 13:01:13.736 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:01:13.736 INFO [stderr]    |
Dec 12 13:01:13.736 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.736 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 12 13:01:13.736 INFO [stderr] 
Dec 12 13:01:13.736 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.736 INFO [stderr]   --> src/hexagram_repository.rs:74:9
Dec 12 13:01:13.736 INFO [stderr]    |
Dec 12 13:01:13.736 INFO [stderr] 74 |         writeln!(f, "{}", self.get_images());
Dec 12 13:01:13.736 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:01:13.736 INFO [stderr]    |
Dec 12 13:01:13.736 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.736 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 12 13:01:13.736 INFO [stderr] 
Dec 12 13:01:13.736 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.736 INFO [stderr]    --> src/trigram.rs:234:9
Dec 12 13:01:13.736 INFO [stderr]     |
Dec 12 13:01:13.736 INFO [stderr] 234 |         writeln!(f, "{} (No. {})", self.symbol(), self.number());
Dec 12 13:01:13.736 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:01:13.736 INFO [stderr]     |
Dec 12 13:01:13.736 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.736 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 12 13:01:13.737 INFO [stderr] 
Dec 12 13:01:13.737 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.737 INFO [stderr]    --> src/trigram.rs:235:9
Dec 12 13:01:13.737 INFO [stderr]     |
Dec 12 13:01:13.737 INFO [stderr] 235 |         writeln!(f, "{} - {}", self.romanized(), self.english_translation());
Dec 12 13:01:13.737 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:01:13.737 INFO [stderr]     |
Dec 12 13:01:13.737 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.737 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 12 13:01:13.737 INFO [stderr] 
Dec 12 13:01:13.737 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.737 INFO [stderr]    --> src/trigram.rs:236:9
Dec 12 13:01:13.737 INFO [stderr]     |
Dec 12 13:01:13.737 INFO [stderr] 236 |         writeln!(f);
Dec 12 13:01:13.737 INFO [stderr]     |         ^^^^^^^^^^^^
Dec 12 13:01:13.737 INFO [stderr]     |
Dec 12 13:01:13.737 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.737 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 12 13:01:13.737 INFO [stderr] 
Dec 12 13:01:13.737 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.737 INFO [stderr]    --> src/trigram.rs:237:9
Dec 12 13:01:13.737 INFO [stderr]     |
Dec 12 13:01:13.737 INFO [stderr] 237 |         writeln!(f, "Attribute: {}", self.attribute());
Dec 12 13:01:13.737 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:01:13.737 INFO [stderr]     |
Dec 12 13:01:13.737 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.737 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 12 13:01:13.737 INFO [stderr] 
Dec 12 13:01:13.737 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.737 INFO [stderr]    --> src/trigram.rs:238:9
Dec 12 13:01:13.737 INFO [stderr]     |
Dec 12 13:01:13.737 INFO [stderr] 238 |         writeln!(f, "Image in nature: {}", self.image());
Dec 12 13:01:13.737 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:01:13.737 INFO [stderr]     |
Dec 12 13:01:13.737 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.737 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 12 13:01:13.737 INFO [stderr] 
Dec 12 13:01:13.737 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:01:13.737 INFO [stderr]    --> src/trigram.rs:239:9
Dec 12 13:01:13.737 INFO [stderr]     |
Dec 12 13:01:13.737 INFO [stderr] 239 |         writeln!(f, "Family Relationship: {}", self.family_relationship());
Dec 12 13:01:13.737 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:01:13.737 INFO [stderr]     |
Dec 12 13:01:13.737 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:01:13.737 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 12 13:01:13.737 INFO [stderr] 
Dec 12 13:01:16.848 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.48s
Dec 12 13:01:16.861 INFO [stderr] su: No module specific data is present
Dec 12 13:01:17.233 INFO running `"docker" "inspect" "3f3b76187e391fa2344a9e2101f7399683a66800d956dd34c28dcb2b04e3ca72"`
Dec 12 13:01:17.315 INFO running `"docker" "rm" "-f" "3f3b76187e391fa2344a9e2101f7399683a66800d956dd34c28dcb2b04e3ca72"`
Dec 12 13:01:17.435 INFO [stdout] 3f3b76187e391fa2344a9e2101f7399683a66800d956dd34c28dcb2b04e3ca72