Dec 11 05:08:48.312 INFO checking zhaihj/rust-play-ground against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 05:08:48.312 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-1/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 11 05:08:48.761 INFO [stdout] 5bb033f138ff3b336bc4907402816e9429e3e788009dabbd7c56e7ff5bcfe7ff
Dec 11 05:08:48.768 INFO running `"docker" "start" "-a" "5bb033f138ff3b336bc4907402816e9429e3e788009dabbd7c56e7ff5bcfe7ff"`
Dec 11 05:08:50.791 INFO [stderr] usermod: no changes
Dec 11 05:08:50.911 INFO [stderr]     Checking libc v0.2.19
Dec 11 05:08:50.920 INFO [stderr]     Checking rustc-serialize v0.3.22
Dec 11 05:08:52.265 INFO [stderr]     Checking memchr v1.0.1
Dec 11 05:08:55.947 INFO [stderr]     Checking csv v0.15.0
Dec 11 05:08:56.582 INFO [stderr]     Checking csv-read-test v0.1.0 (/source)
Dec 11 05:08:56.868 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 05:08:56.868 INFO [stderr]  --> src/bin/read-csv-matrix.rs:8:5
Dec 11 05:08:56.868 INFO [stderr]   |
Dec 11 05:08:56.868 INFO [stderr] 8 |     f.read_to_string(&mut s);
Dec 11 05:08:56.868 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:08:56.868 INFO [stderr]   |
Dec 11 05:08:56.868 INFO [stderr]   = note: #[warn(unused_must_use)] on by default
Dec 11 05:08:56.868 INFO [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 05:08:56.868 INFO [stderr] 
Dec 11 05:08:56.930 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 05:08:56.930 INFO [stderr]  --> src/bin/read-csv-matrix.rs:8:5
Dec 11 05:08:56.930 INFO [stderr]   |
Dec 11 05:08:56.930 INFO [stderr] 8 |     f.read_to_string(&mut s);
Dec 11 05:08:56.930 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 05:08:56.930 INFO [stderr]   |
Dec 11 05:08:56.930 INFO [stderr]   = note: #[warn(unused_must_use)] on by default
Dec 11 05:08:56.930 INFO [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 05:08:56.930 INFO [stderr] 
Dec 11 05:08:56.964 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.15s
Dec 11 05:08:56.977 INFO [stderr] su: No module specific data is present
Dec 11 05:08:58.403 INFO running `"docker" "inspect" "5bb033f138ff3b336bc4907402816e9429e3e788009dabbd7c56e7ff5bcfe7ff"`
Dec 11 05:08:58.712 INFO running `"docker" "rm" "-f" "5bb033f138ff3b336bc4907402816e9429e3e788009dabbd7c56e7ff5bcfe7ff"`
Dec 11 05:08:59.086 INFO [stdout] 5bb033f138ff3b336bc4907402816e9429e3e788009dabbd7c56e7ff5bcfe7ff