Nov 07 15:13:30.157 INFO checking float_fast_print-0.1.2 against master#24e66c28980442a48d9458f1a4f9b76cc722dc8a for pr-55687
Nov 07 15:13:30.160 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55687/worker-0/master#24e66c28980442a48d9458f1a4f9b76cc722dc8a:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-55687/master#24e66c28980442a48d9458f1a4f9b76cc722dc8a:/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 +24e66c28980442a48d9458f1a4f9b76cc722dc8a-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 07 15:13:30.508 INFO blam! fe547c158790fd3cd0c93ec8868f3bb43bb061e1aff6226d2ed986095ba95046
Nov 07 15:13:30.509 INFO running `"docker" "start" "-a" "fe547c158790fd3cd0c93ec8868f3bb43bb061e1aff6226d2ed986095ba95046"`
Nov 07 15:13:31.446 INFO kablam! usermod: no changes
Nov 07 15:13:31.520 INFO kablam!     Checking float_fast_print v0.1.2 (/source)
Nov 07 15:13:33.564 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 07 15:13:33.564 INFO kablam!   --> tests/benchmarks.rs:17:9
Nov 07 15:13:33.564 INFO kablam!    |
Nov 07 15:13:33.564 INFO kablam! 17 |         write!(&mut buffer, "{:?}", x);
Nov 07 15:13:33.564 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 07 15:13:33.564 INFO kablam!    |
Nov 07 15:13:33.564 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Nov 07 15:13:33.564 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 07 15:13:33.564 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 07 15:13:33.564 INFO kablam! 
Nov 07 15:13:33.564 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 07 15:13:33.564 INFO kablam!   --> tests/benchmarks.rs:28:9
Nov 07 15:13:33.564 INFO kablam!    |
Nov 07 15:13:33.564 INFO kablam! 28 |         write!(&mut buffer, "{}", x);
Nov 07 15:13:33.564 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 07 15:13:33.564 INFO kablam!    |
Nov 07 15:13:33.564 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 07 15:13:33.564 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 07 15:13:33.564 INFO kablam! 
Nov 07 15:13:33.564 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 07 15:13:33.564 INFO kablam!   --> tests/benchmarks.rs:39:9
Nov 07 15:13:33.564 INFO kablam!    |
Nov 07 15:13:33.564 INFO kablam! 39 |         write!(&mut buffer, "{:?}", x);
Nov 07 15:13:33.564 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 07 15:13:33.564 INFO kablam!    |
Nov 07 15:13:33.564 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 07 15:13:33.564 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 07 15:13:33.564 INFO kablam! 
Nov 07 15:13:33.564 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 07 15:13:33.564 INFO kablam!   --> tests/benchmarks.rs:50:9
Nov 07 15:13:33.564 INFO kablam!    |
Nov 07 15:13:33.564 INFO kablam! 50 |         write!(&mut buffer, "{}", x);
Nov 07 15:13:33.564 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 07 15:13:33.564 INFO kablam!    |
Nov 07 15:13:33.564 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 07 15:13:33.564 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 07 15:13:33.564 INFO kablam! 
Nov 07 15:13:33.793 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 2.32s
Nov 07 15:13:33.795 INFO kablam! su: No module specific data is present
Nov 07 15:13:34.213 INFO running `"docker" "rm" "-f" "fe547c158790fd3cd0c93ec8868f3bb43bb061e1aff6226d2ed986095ba95046"`
Nov 07 15:13:34.402 INFO blam! fe547c158790fd3cd0c93ec8868f3bb43bb061e1aff6226d2ed986095ba95046