Nov 09 07:23:03.018 INFO checking peter-bertok/float_fast_print against master#653da4fd006c97625247acd7e076d0782cdc149b for pr-55632
Nov 09 07:23:03.018 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55632/worker-0/master#653da4fd006c97625247acd7e076d0782cdc149b:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-55632/master#653da4fd006c97625247acd7e076d0782cdc149b:/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 +653da4fd006c97625247acd7e076d0782cdc149b-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 09 07:23:03.494 INFO blam! 3e74ffd9d451b9d741319f97b55f20c3cde62280f7181fceaa24f2294be393d4
Nov 09 07:23:03.497 INFO running `"docker" "start" "-a" "3e74ffd9d451b9d741319f97b55f20c3cde62280f7181fceaa24f2294be393d4"`
Nov 09 07:23:04.735 INFO kablam! usermod: no changes
Nov 09 07:23:04.831 INFO kablam!     Checking float_fast_print v0.1.2 (/source)
Nov 09 07:23:04.831 INFO kablam!     Checking rand v0.5.4
Nov 09 07:23:08.007 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 09 07:23:08.007 INFO kablam!   --> tests/benchmarks.rs:17:9
Nov 09 07:23:08.007 INFO kablam!    |
Nov 09 07:23:08.007 INFO kablam! 17 |         write!(&mut buffer, "{:?}", x);
Nov 09 07:23:08.007 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 09 07:23:08.007 INFO kablam!    |
Nov 09 07:23:08.007 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Nov 09 07:23:08.007 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 09 07:23:08.007 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 09 07:23:08.007 INFO kablam! 
Nov 09 07:23:08.007 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 09 07:23:08.007 INFO kablam!   --> tests/benchmarks.rs:28:9
Nov 09 07:23:08.007 INFO kablam!    |
Nov 09 07:23:08.007 INFO kablam! 28 |         write!(&mut buffer, "{}", x);
Nov 09 07:23:08.007 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 09 07:23:08.007 INFO kablam!    |
Nov 09 07:23:08.007 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 09 07:23:08.007 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 09 07:23:08.007 INFO kablam! 
Nov 09 07:23:08.007 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 09 07:23:08.007 INFO kablam!   --> tests/benchmarks.rs:39:9
Nov 09 07:23:08.007 INFO kablam!    |
Nov 09 07:23:08.007 INFO kablam! 39 |         write!(&mut buffer, "{:?}", x);
Nov 09 07:23:08.007 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 09 07:23:08.007 INFO kablam!    |
Nov 09 07:23:08.007 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 09 07:23:08.007 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 09 07:23:08.007 INFO kablam! 
Nov 09 07:23:08.007 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 09 07:23:08.007 INFO kablam!   --> tests/benchmarks.rs:50:9
Nov 09 07:23:08.007 INFO kablam!    |
Nov 09 07:23:08.007 INFO kablam! 50 |         write!(&mut buffer, "{}", x);
Nov 09 07:23:08.007 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 09 07:23:08.007 INFO kablam!    |
Nov 09 07:23:08.007 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 09 07:23:08.007 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 09 07:23:08.007 INFO kablam! 
Nov 09 07:23:08.146 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.38s
Nov 09 07:23:08.149 INFO kablam! su: No module specific data is present
Nov 09 07:23:09.103 INFO running `"docker" "rm" "-f" "3e74ffd9d451b9d741319f97b55f20c3cde62280f7181fceaa24f2294be393d4"`
Nov 09 07:23:09.327 INFO blam! 3e74ffd9d451b9d741319f97b55f20c3cde62280f7181fceaa24f2294be393d4