Dec 17 17:59:05.295 INFO checking peter-bertok/float_fast_print against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 17:59:05.295 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/peter-bertok/float_fast_print:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 17:59:05.716 INFO [stdout] a78723b04fe92cbd380ddd43c2b2967cda40e250bcfba6a9b677ead5589cec9a
Dec 17 17:59:05.722 INFO running `"docker" "start" "-a" "a78723b04fe92cbd380ddd43c2b2967cda40e250bcfba6a9b677ead5589cec9a"`
Dec 17 17:59:07.060 INFO [stderr]     Checking float_fast_print v0.1.2 (/opt/crater/workdir)
Dec 17 17:59:07.722 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 17:59:07.722 INFO [stderr]   --> tests/benchmarks.rs:17:9
Dec 17 17:59:07.722 INFO [stderr]    |
Dec 17 17:59:07.722 INFO [stderr] 17 |         write!(&mut buffer, "{:?}", x);
Dec 17 17:59:07.722 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:59:07.722 INFO [stderr]    |
Dec 17 17:59:07.722 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 17:59:07.728 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 17:59:07.729 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 17:59:07.729 INFO [stderr] 
Dec 17 17:59:07.736 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 17:59:07.736 INFO [stderr]   --> tests/benchmarks.rs:28:9
Dec 17 17:59:07.736 INFO [stderr]    |
Dec 17 17:59:07.736 INFO [stderr] 28 |         write!(&mut buffer, "{}", x);
Dec 17 17:59:07.736 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:59:07.736 INFO [stderr]    |
Dec 17 17:59:07.736 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 17:59:07.736 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 17 17:59:07.736 INFO [stderr] 
Dec 17 17:59:07.737 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 17:59:07.737 INFO [stderr]   --> tests/benchmarks.rs:39:9
Dec 17 17:59:07.737 INFO [stderr]    |
Dec 17 17:59:07.737 INFO [stderr] 39 |         write!(&mut buffer, "{:?}", x);
Dec 17 17:59:07.737 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:59:07.737 INFO [stderr]    |
Dec 17 17:59:07.737 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 17:59:07.737 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 17 17:59:07.737 INFO [stderr] 
Dec 17 17:59:07.738 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 17:59:07.738 INFO [stderr]   --> tests/benchmarks.rs:50:9
Dec 17 17:59:07.738 INFO [stderr]    |
Dec 17 17:59:07.738 INFO [stderr] 50 |         write!(&mut buffer, "{}", x);
Dec 17 17:59:07.738 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:59:07.738 INFO [stderr]    |
Dec 17 17:59:07.738 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 17:59:07.738 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 17:59:07.738 INFO [stderr] 
Dec 17 17:59:07.953 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
Dec 17 17:59:08.793 INFO running `"docker" "inspect" "a78723b04fe92cbd380ddd43c2b2967cda40e250bcfba6a9b677ead5589cec9a"`
Dec 17 17:59:09.066 INFO running `"docker" "rm" "-f" "a78723b04fe92cbd380ddd43c2b2967cda40e250bcfba6a9b677ead5589cec9a"`
Dec 17 17:59:09.332 INFO [stdout] a78723b04fe92cbd380ddd43c2b2967cda40e250bcfba6a9b677ead5589cec9a