Dec 04 06:07:02.000 INFO checking zhaihj/rust-play-ground against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 06:07:02.000 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-7/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 04 06:07:02.484 INFO [stdout] c65a674dfeefdc4e6e2bf6f5b118963f53ce34a5869b9d328fd33c0c2bab521d
Dec 04 06:07:02.486 INFO running `"docker" "start" "-a" "c65a674dfeefdc4e6e2bf6f5b118963f53ce34a5869b9d328fd33c0c2bab521d"`
Dec 04 06:07:04.926 INFO [stderr] usermod: no changes
Dec 04 06:07:04.995 INFO [stderr]     Checking libc v0.2.19
Dec 04 06:07:05.019 INFO [stderr]     Checking rustc-serialize v0.3.22
Dec 04 06:07:05.019 INFO [stderr]     Checking byteorder v1.0.0
Dec 04 06:07:06.434 INFO [stderr]     Checking memchr v1.0.1
Dec 04 06:07:10.400 INFO [stderr]     Checking csv v0.15.0
Dec 04 06:07:11.109 INFO [stderr]     Checking csv-read-test v0.1.0 (/source)
Dec 04 06:07:11.745 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 06:07:11.745 INFO [stderr]  --> src/bin/read-csv-matrix.rs:8:5
Dec 04 06:07:11.750 INFO [stderr]   |
Dec 04 06:07:11.751 INFO [stderr] 8 |     f.read_to_string(&mut s);
Dec 04 06:07:11.751 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 06:07:11.751 INFO [stderr]   |
Dec 04 06:07:11.751 INFO [stderr]   = note: #[warn(unused_must_use)] on by default
Dec 04 06:07:11.751 INFO [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 06:07:11.751 INFO [stderr] 
Dec 04 06:07:11.751 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 06:07:11.751 INFO [stderr]  --> src/bin/read-csv-matrix.rs:8:5
Dec 04 06:07:11.751 INFO [stderr]   |
Dec 04 06:07:11.751 INFO [stderr] 8 |     f.read_to_string(&mut s);
Dec 04 06:07:11.751 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 06:07:11.751 INFO [stderr]   |
Dec 04 06:07:11.751 INFO [stderr]   = note: #[warn(unused_must_use)] on by default
Dec 04 06:07:11.751 INFO [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 06:07:11.751 INFO [stderr] 
Dec 04 06:07:11.819 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.85s
Dec 04 06:07:11.821 INFO [stderr] su: No module specific data is present
Dec 04 06:07:12.783 INFO running `"docker" "inspect" "c65a674dfeefdc4e6e2bf6f5b118963f53ce34a5869b9d328fd33c0c2bab521d"`
Dec 04 06:07:13.117 INFO running `"docker" "rm" "-f" "c65a674dfeefdc4e6e2bf6f5b118963f53ce34a5869b9d328fd33c0c2bab521d"`
Dec 04 06:07:13.451 INFO [stdout] c65a674dfeefdc4e6e2bf6f5b118963f53ce34a5869b9d328fd33c0c2bab521d