Dec 18 16:27:03.204 INFO checking float_fast_print-0.1.2 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 16:27:03.205 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/float_fast_print/0.1.2:/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 16:27:03.554 INFO [stdout] 1535cfe60a03684df69f0eaee18007bb4c6f0bd1b3c764265fdb30829d4f386a
Dec 18 16:27:03.558 INFO running `"docker" "start" "-a" "1535cfe60a03684df69f0eaee18007bb4c6f0bd1b3c764265fdb30829d4f386a"`
Dec 18 16:27:04.824 INFO [stderr]     Checking float_fast_print v0.1.2 (/opt/crater/workdir)
Dec 18 16:27:05.905 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 16:27:05.905 INFO [stderr]   --> tests/benchmarks.rs:17:9
Dec 18 16:27:05.905 INFO [stderr]    |
Dec 18 16:27:05.905 INFO [stderr] 17 |         write!(&mut buffer, "{:?}", x);
Dec 18 16:27:05.905 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 16:27:05.905 INFO [stderr]    |
Dec 18 16:27:05.905 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 16:27:05.905 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 16:27:05.905 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 16:27:05.905 INFO [stderr] 
Dec 18 16:27:05.905 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 16:27:05.905 INFO [stderr]   --> tests/benchmarks.rs:28:9
Dec 18 16:27:05.905 INFO [stderr]    |
Dec 18 16:27:05.905 INFO [stderr] 28 |         write!(&mut buffer, "{}", x);
Dec 18 16:27:05.905 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 16:27:05.905 INFO [stderr]    |
Dec 18 16:27:05.905 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 16:27:05.905 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 16:27:05.905 INFO [stderr] 
Dec 18 16:27:05.905 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 16:27:05.905 INFO [stderr]   --> tests/benchmarks.rs:39:9
Dec 18 16:27:05.905 INFO [stderr]    |
Dec 18 16:27:05.905 INFO [stderr] 39 |         write!(&mut buffer, "{:?}", x);
Dec 18 16:27:05.905 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 16:27:05.905 INFO [stderr]    |
Dec 18 16:27:05.905 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 16:27:05.905 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 16:27:05.905 INFO [stderr] 
Dec 18 16:27:05.905 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 16:27:05.905 INFO [stderr]   --> tests/benchmarks.rs:50:9
Dec 18 16:27:05.905 INFO [stderr]    |
Dec 18 16:27:05.905 INFO [stderr] 50 |         write!(&mut buffer, "{}", x);
Dec 18 16:27:05.905 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 16:27:05.905 INFO [stderr]    |
Dec 18 16:27:05.905 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 16:27:05.905 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 16:27:05.905 INFO [stderr] 
Dec 18 16:27:06.016 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.24s
Dec 18 16:27:06.506 INFO running `"docker" "inspect" "1535cfe60a03684df69f0eaee18007bb4c6f0bd1b3c764265fdb30829d4f386a"`
Dec 18 16:27:06.691 INFO running `"docker" "rm" "-f" "1535cfe60a03684df69f0eaee18007bb4c6f0bd1b3c764265fdb30829d4f386a"`
Dec 18 16:27:06.884 INFO [stdout] 1535cfe60a03684df69f0eaee18007bb4c6f0bd1b3c764265fdb30829d4f386a