Nov 10 06:21:02.652 INFO checking float_fast_print-0.1.2 against try#dc13be39fae8d4c607889b27de374b52586485a3 for pr-55632
Nov 10 06:21:02.652 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55632/worker-6/try#dc13be39fae8d4c607889b27de374b52586485a3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55632/try#dc13be39fae8d4c607889b27de374b52586485a3:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +dc13be39fae8d4c607889b27de374b52586485a3-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 10 06:21:02.958 INFO blam! 313ba2d413fe7b6d0138d7882187755ffb26296692a6db0b9a80364207bf8fe4
Nov 10 06:21:02.975 INFO running `"docker" "start" "-a" "313ba2d413fe7b6d0138d7882187755ffb26296692a6db0b9a80364207bf8fe4"`
Nov 10 06:21:03.983 INFO kablam! usermod: no changes
Nov 10 06:21:04.103 INFO kablam!     Checking float_fast_print v0.1.2 (/source)
Nov 10 06:21:06.468 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 10 06:21:06.468 INFO kablam!   --> tests/benchmarks.rs:17:9
Nov 10 06:21:06.468 INFO kablam!    |
Nov 10 06:21:06.468 INFO kablam! 17 |         write!(&mut buffer, "{:?}", x);
Nov 10 06:21:06.468 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 10 06:21:06.468 INFO kablam!    |
Nov 10 06:21:06.468 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Nov 10 06:21:06.468 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 10 06:21:06.468 INFO kablam!    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 10 06:21:06.468 INFO kablam! 
Nov 10 06:21:06.468 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 10 06:21:06.468 INFO kablam!   --> tests/benchmarks.rs:28:9
Nov 10 06:21:06.468 INFO kablam!    |
Nov 10 06:21:06.468 INFO kablam! 28 |         write!(&mut buffer, "{}", x);
Nov 10 06:21:06.468 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 10 06:21:06.468 INFO kablam!    |
Nov 10 06:21:06.468 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 10 06:21:06.468 INFO kablam!    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 10 06:21:06.468 INFO kablam! 
Nov 10 06:21:06.468 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 10 06:21:06.468 INFO kablam!   --> tests/benchmarks.rs:39:9
Nov 10 06:21:06.468 INFO kablam!    |
Nov 10 06:21:06.468 INFO kablam! 39 |         write!(&mut buffer, "{:?}", x);
Nov 10 06:21:06.468 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 10 06:21:06.468 INFO kablam!    |
Nov 10 06:21:06.468 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 10 06:21:06.468 INFO kablam!    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 10 06:21:06.468 INFO kablam! 
Nov 10 06:21:06.468 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 10 06:21:06.468 INFO kablam!   --> tests/benchmarks.rs:50:9
Nov 10 06:21:06.468 INFO kablam!    |
Nov 10 06:21:06.468 INFO kablam! 50 |         write!(&mut buffer, "{}", x);
Nov 10 06:21:06.468 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 10 06:21:06.468 INFO kablam!    |
Nov 10 06:21:06.468 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 10 06:21:06.468 INFO kablam!    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 10 06:21:06.468 INFO kablam! 
Nov 10 06:21:06.696 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 2.68s
Nov 10 06:21:06.700 INFO kablam! su: No module specific data is present
Nov 10 06:21:07.047 INFO running `"docker" "rm" "-f" "313ba2d413fe7b6d0138d7882187755ffb26296692a6db0b9a80364207bf8fe4"`
Nov 10 06:21:07.197 INFO blam! 313ba2d413fe7b6d0138d7882187755ffb26296692a6db0b9a80364207bf8fe4