Dec 18 06:54:18.893 INFO checking KoharaKazuya/forest against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 06:54:18.893 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/KoharaKazuya/forest:/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 06:54:19.279 INFO [stdout] da519f796a9562b7f9657453f376b2e843210367f3a2d70854405b6a10820458
Dec 18 06:54:19.281 INFO running `"docker" "start" "-a" "da519f796a9562b7f9657453f376b2e843210367f3a2d70854405b6a10820458"`
Dec 18 06:54:20.957 INFO [stderr]     Checking forest v0.2.0 (/opt/crater/workdir)
Dec 18 06:54:21.536 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 06:54:21.536 INFO [stderr]   --> src/tree_formatter.rs:28:9
Dec 18 06:54:21.536 INFO [stderr]    |
Dec 18 06:54:21.536 INFO [stderr] 28 | /         write!(self.writer, "{}", match *shape {
Dec 18 06:54:21.536 INFO [stderr] 29 | |           Shape::Open => &self.ancestor_guide_open,
Dec 18 06:54:21.536 INFO [stderr] 30 | |           Shape::Close => &self.ancestor_guide_close,
Dec 18 06:54:21.536 INFO [stderr] 31 | |           _ => panic!("Unexpected Internal Value\nPerhaps, internal logic error...\nformatter can treat with only Open/Close Shape"),
Dec 18 06:54:21.536 INFO [stderr] 32 | |         });
Dec 18 06:54:21.536 INFO [stderr]    | |___________^
Dec 18 06:54:21.536 INFO [stderr]    |
Dec 18 06:54:21.536 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 06:54:21.536 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 06:54:21.536 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 18 06:54:21.536 INFO [stderr] 
Dec 18 06:54:21.536 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 06:54:21.536 INFO [stderr]   --> src/tree_formatter.rs:39:7
Dec 18 06:54:21.536 INFO [stderr]    |
Dec 18 06:54:21.536 INFO [stderr] 39 |       write!(self.writer, "{}{}\n", ng, entry.name);
Dec 18 06:54:21.536 INFO [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:54:21.536 INFO [stderr]    |
Dec 18 06:54:21.537 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 06:54:21.537 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 18 06:54:21.537 INFO [stderr] 
Dec 18 06:54:21.668 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 06:54:21.668 INFO [stderr]   --> src/tree_formatter.rs:28:9
Dec 18 06:54:21.668 INFO [stderr]    |
Dec 18 06:54:21.668 INFO [stderr] 28 | /         write!(self.writer, "{}", match *shape {
Dec 18 06:54:21.668 INFO [stderr] 29 | |           Shape::Open => &self.ancestor_guide_open,
Dec 18 06:54:21.668 INFO [stderr] 30 | |           Shape::Close => &self.ancestor_guide_close,
Dec 18 06:54:21.668 INFO [stderr] 31 | |           _ => panic!("Unexpected Internal Value\nPerhaps, internal logic error...\nformatter can treat with only Open/Close Shape"),
Dec 18 06:54:21.668 INFO [stderr] 32 | |         });
Dec 18 06:54:21.668 INFO [stderr]    | |___________^
Dec 18 06:54:21.668 INFO [stderr]    |
Dec 18 06:54:21.668 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 06:54:21.668 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 06:54:21.668 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 18 06:54:21.668 INFO [stderr] 
Dec 18 06:54:21.668 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 06:54:21.668 INFO [stderr]   --> src/tree_formatter.rs:39:7
Dec 18 06:54:21.668 INFO [stderr]    |
Dec 18 06:54:21.668 INFO [stderr] 39 |       write!(self.writer, "{}{}\n", ng, entry.name);
Dec 18 06:54:21.668 INFO [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:54:21.668 INFO [stderr]    |
Dec 18 06:54:21.668 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 06:54:21.668 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 18 06:54:21.668 INFO [stderr] 
Dec 18 06:54:21.691 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
Dec 18 06:54:22.306 INFO running `"docker" "inspect" "da519f796a9562b7f9657453f376b2e843210367f3a2d70854405b6a10820458"`
Dec 18 06:54:22.596 INFO running `"docker" "rm" "-f" "da519f796a9562b7f9657453f376b2e843210367f3a2d70854405b6a10820458"`
Dec 18 06:54:22.936 INFO [stdout] da519f796a9562b7f9657453f376b2e843210367f3a2d70854405b6a10820458