Dec 05 13:44:51.752 INFO checking float_fast_print-0.1.2 against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 13:44:51.752 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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"`
Dec 05 13:44:52.147 INFO [stdout] 97c16af5f2224b6148bd74f128e420c2d5009427620323d7174808063a2e2b18
Dec 05 13:44:52.156 INFO running `"docker" "start" "-a" "97c16af5f2224b6148bd74f128e420c2d5009427620323d7174808063a2e2b18"`
Dec 05 13:44:53.149 INFO [stderr] usermod: no changes
Dec 05 13:44:53.203 INFO [stderr]     Checking float_fast_print v0.1.2 (/source)
Dec 05 13:44:55.202 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 13:44:55.203 INFO [stderr]   --> tests/benchmarks.rs:17:9
Dec 05 13:44:55.203 INFO [stderr]    |
Dec 05 13:44:55.203 INFO [stderr] 17 |         write!(&mut buffer, "{:?}", x);
Dec 05 13:44:55.203 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:44:55.203 INFO [stderr]    |
Dec 05 13:44:55.203 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 13:44:55.203 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 13:44:55.203 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 05 13:44:55.203 INFO [stderr] 
Dec 05 13:44:55.203 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 13:44:55.203 INFO [stderr]   --> tests/benchmarks.rs:28:9
Dec 05 13:44:55.203 INFO [stderr]    |
Dec 05 13:44:55.203 INFO [stderr] 28 |         write!(&mut buffer, "{}", x);
Dec 05 13:44:55.203 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:44:55.203 INFO [stderr]    |
Dec 05 13:44:55.203 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 13:44:55.203 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 05 13:44:55.203 INFO [stderr] 
Dec 05 13:44:55.203 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 13:44:55.203 INFO [stderr]   --> tests/benchmarks.rs:39:9
Dec 05 13:44:55.203 INFO [stderr]    |
Dec 05 13:44:55.203 INFO [stderr] 39 |         write!(&mut buffer, "{:?}", x);
Dec 05 13:44:55.203 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:44:55.203 INFO [stderr]    |
Dec 05 13:44:55.203 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 13:44:55.203 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 05 13:44:55.203 INFO [stderr] 
Dec 05 13:44:55.203 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 13:44:55.203 INFO [stderr]   --> tests/benchmarks.rs:50:9
Dec 05 13:44:55.203 INFO [stderr]    |
Dec 05 13:44:55.203 INFO [stderr] 50 |         write!(&mut buffer, "{}", x);
Dec 05 13:44:55.203 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:44:55.203 INFO [stderr]    |
Dec 05 13:44:55.203 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 13:44:55.203 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 05 13:44:55.203 INFO [stderr] 
Dec 05 13:44:55.390 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.23s
Dec 05 13:44:55.394 INFO [stderr] su: No module specific data is present
Dec 05 13:44:55.992 INFO running `"docker" "inspect" "97c16af5f2224b6148bd74f128e420c2d5009427620323d7174808063a2e2b18"`
Dec 05 13:44:56.391 INFO running `"docker" "rm" "-f" "97c16af5f2224b6148bd74f128e420c2d5009427620323d7174808063a2e2b18"`
Dec 05 13:44:56.623 INFO [stdout] 97c16af5f2224b6148bd74f128e420c2d5009427620323d7174808063a2e2b18