Dec 19 11:05:36.729 INFO checking peter-bertok/float_fast_print against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 11:05:36.729 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/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 11:05:37.148 INFO [stdout] ab33a9918c87a63c8b4c1f8fc243ebdde224ba006ef6201005a80bb8e4d83a43
Dec 19 11:05:37.156 INFO running `"docker" "start" "-a" "ab33a9918c87a63c8b4c1f8fc243ebdde224ba006ef6201005a80bb8e4d83a43"`
Dec 19 11:05:39.622 INFO [stderr]     Checking float_fast_print v0.1.2 (/opt/crater/workdir)
Dec 19 11:05:40.548 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 11:05:40.548 INFO [stderr]   --> tests/benchmarks.rs:17:9
Dec 19 11:05:40.548 INFO [stderr]    |
Dec 19 11:05:40.548 INFO [stderr] 17 |         write!(&mut buffer, "{:?}", x);
Dec 19 11:05:40.548 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:05:40.548 INFO [stderr]    |
Dec 19 11:05:40.548 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 11:05:40.548 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 11:05:40.548 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 11:05:40.548 INFO [stderr] 
Dec 19 11:05:40.552 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 11:05:40.552 INFO [stderr]   --> tests/benchmarks.rs:28:9
Dec 19 11:05:40.552 INFO [stderr]    |
Dec 19 11:05:40.552 INFO [stderr] 28 |         write!(&mut buffer, "{}", x);
Dec 19 11:05:40.552 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:05:40.552 INFO [stderr]    |
Dec 19 11:05:40.552 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 11:05:40.552 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 11:05:40.552 INFO [stderr] 
Dec 19 11:05:40.552 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 11:05:40.552 INFO [stderr]   --> tests/benchmarks.rs:39:9
Dec 19 11:05:40.552 INFO [stderr]    |
Dec 19 11:05:40.552 INFO [stderr] 39 |         write!(&mut buffer, "{:?}", x);
Dec 19 11:05:40.552 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:05:40.552 INFO [stderr]    |
Dec 19 11:05:40.552 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 11:05:40.552 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 11:05:40.552 INFO [stderr] 
Dec 19 11:05:40.552 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 11:05:40.552 INFO [stderr]   --> tests/benchmarks.rs:50:9
Dec 19 11:05:40.553 INFO [stderr]    |
Dec 19 11:05:40.553 INFO [stderr] 50 |         write!(&mut buffer, "{}", x);
Dec 19 11:05:40.553 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:05:40.553 INFO [stderr]    |
Dec 19 11:05:40.553 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 11:05:40.553 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 11:05:40.553 INFO [stderr] 
Dec 19 11:05:40.716 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.17s
Dec 19 11:05:41.512 INFO running `"docker" "inspect" "ab33a9918c87a63c8b4c1f8fc243ebdde224ba006ef6201005a80bb8e4d83a43"`
Dec 19 11:05:41.748 INFO running `"docker" "rm" "-f" "ab33a9918c87a63c8b4c1f8fc243ebdde224ba006ef6201005a80bb8e4d83a43"`
Dec 19 11:05:42.012 INFO [stdout] ab33a9918c87a63c8b4c1f8fc243ebdde224ba006ef6201005a80bb8e4d83a43