Dec 19 17:23:00.805 INFO checking eminence/snapshot_trim against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 17:23:00.805 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/eminence/snapshot_trim:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 17:23:01.248 INFO [stdout] 540063addf2899ec3b4209b842290f063675e0333e172d080560b5e8336bc83f
Dec 19 17:23:01.250 INFO running `"docker" "start" "-a" "540063addf2899ec3b4209b842290f063675e0333e172d080560b5e8336bc83f"`
Dec 19 17:23:02.526 INFO [stderr]     Checking docopt v0.8.1
Dec 19 17:23:03.880 INFO [stderr]     Checking snapshot_trim v0.1.0 (/opt/crater/workdir)
Dec 19 17:23:04.456 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 17:23:04.456 INFO [stderr]   --> src/main.rs:66:9
Dec 19 17:23:04.456 INFO [stderr]    |
Dec 19 17:23:04.456 INFO [stderr] 66 |         write!(fmt, "<Snapshot {:?} {:?}>", self.snap, self.state);
Dec 19 17:23:04.456 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 17:23:04.456 INFO [stderr]    |
Dec 19 17:23:04.456 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 17:23:04.456 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 17:23:04.456 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 19 17:23:04.456 INFO [stderr] 
Dec 19 17:23:04.456 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 17:23:04.456 INFO [stderr]   --> src/main.rs:66:9
Dec 19 17:23:04.456 INFO [stderr]    |
Dec 19 17:23:04.456 INFO [stderr] 66 |         write!(fmt, "<Snapshot {:?} {:?}>", self.snap, self.state);
Dec 19 17:23:04.456 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 17:23:04.456 INFO [stderr]    |
Dec 19 17:23:04.456 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 17:23:04.456 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 17:23:04.456 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 19 17:23:04.456 INFO [stderr] 
Dec 19 17:23:04.532 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.07s
Dec 19 17:23:05.133 INFO running `"docker" "inspect" "540063addf2899ec3b4209b842290f063675e0333e172d080560b5e8336bc83f"`
Dec 19 17:23:05.214 INFO running `"docker" "rm" "-f" "540063addf2899ec3b4209b842290f063675e0333e172d080560b5e8336bc83f"`
Dec 19 17:23:05.360 INFO [stdout] 540063addf2899ec3b4209b842290f063675e0333e172d080560b5e8336bc83f