Dec 19 04:37:22.032 INFO checking zhaihj/rust-play-ground against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 04:37:22.032 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-3/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/zhaihj/rust-play-ground:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 04:37:22.560 INFO [stdout] 63a0a0def3e4968b7de46d17a120215abb8684d010b5d81bed7056ff3bd427ca
Dec 19 04:37:22.562 INFO running `"docker" "start" "-a" "63a0a0def3e4968b7de46d17a120215abb8684d010b5d81bed7056ff3bd427ca"`
Dec 19 04:37:23.972 INFO [stderr]     Checking libc v0.2.19
Dec 19 04:37:23.972 INFO [stderr]     Checking rustc-serialize v0.3.22
Dec 19 04:37:25.096 INFO [stderr]     Checking memchr v1.0.1
Dec 19 04:37:29.367 INFO [stderr]     Checking csv v0.15.0
Dec 19 04:37:29.984 INFO [stderr]     Checking csv-read-test v0.1.0 (/opt/crater/workdir)
Dec 19 04:37:30.296 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 04:37:30.296 INFO [stderr]  --> src/bin/read-csv-matrix.rs:8:5
Dec 19 04:37:30.296 INFO [stderr]   |
Dec 19 04:37:30.296 INFO [stderr] 8 |     f.read_to_string(&mut s);
Dec 19 04:37:30.296 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 04:37:30.296 INFO [stderr]   |
Dec 19 04:37:30.296 INFO [stderr]   = note: #[warn(unused_must_use)] on by default
Dec 19 04:37:30.296 INFO [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 04:37:30.296 INFO [stderr] 
Dec 19 04:37:30.376 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 04:37:30.376 INFO [stderr]  --> src/bin/read-csv-matrix.rs:8:5
Dec 19 04:37:30.376 INFO [stderr]   |
Dec 19 04:37:30.376 INFO [stderr] 8 |     f.read_to_string(&mut s);
Dec 19 04:37:30.376 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 04:37:30.376 INFO [stderr]   |
Dec 19 04:37:30.376 INFO [stderr]   = note: #[warn(unused_must_use)] on by default
Dec 19 04:37:30.376 INFO [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 04:37:30.376 INFO [stderr] 
Dec 19 04:37:30.400 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.45s
Dec 19 04:37:31.713 INFO running `"docker" "inspect" "63a0a0def3e4968b7de46d17a120215abb8684d010b5d81bed7056ff3bd427ca"`
Dec 19 04:37:31.916 INFO running `"docker" "rm" "-f" "63a0a0def3e4968b7de46d17a120215abb8684d010b5d81bed7056ff3bd427ca"`
Dec 19 04:37:32.228 INFO [stdout] 63a0a0def3e4968b7de46d17a120215abb8684d010b5d81bed7056ff3bd427ca