Nov 30 05:57:26.156 INFO checking brandonpollack23/rust_wc against master#a49316ddc99d9d595193557fc899f6c52e4d9af9 for pr-56323
Nov 30 05:57:26.156 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-2/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56323/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/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 +a49316ddc99d9d595193557fc899f6c52e4d9af9-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 30 05:57:26.623 INFO [stdout] b81991703a02ebecea9f1f17d6d3b5b30673413a1e6a8857be3a549e24c32534
Nov 30 05:57:26.630 INFO running `"docker" "start" "-a" "b81991703a02ebecea9f1f17d6d3b5b30673413a1e6a8857be3a549e24c32534"`
Nov 30 05:57:27.852 INFO [stderr] usermod: no changes
Nov 30 05:57:27.993 INFO [stderr]     Checking rust_wc v0.1.0 (/source)
Nov 30 05:57:29.298 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 05:57:29.298 INFO [stderr]   --> src/word_count.rs:35:13
Nov 30 05:57:29.298 INFO [stderr]    |
Nov 30 05:57:29.298 INFO [stderr] 35 |             write!(&mut output, "{} ", self.lines);
Nov 30 05:57:29.298 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:57:29.298 INFO [stderr]    |
Nov 30 05:57:29.298 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 30 05:57:29.298 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 05:57:29.298 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)
Nov 30 05:57:29.298 INFO [stderr] 
Nov 30 05:57:29.298 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 05:57:29.298 INFO [stderr]   --> src/word_count.rs:38:13
Nov 30 05:57:29.298 INFO [stderr]    |
Nov 30 05:57:29.298 INFO [stderr] 38 |             write!(&mut output, "{} ", self.words);
Nov 30 05:57:29.298 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:57:29.298 INFO [stderr]    |
Nov 30 05:57:29.298 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 05:57:29.298 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)
Nov 30 05:57:29.298 INFO [stderr] 
Nov 30 05:57:29.298 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 05:57:29.298 INFO [stderr]   --> src/word_count.rs:41:13
Nov 30 05:57:29.298 INFO [stderr]    |
Nov 30 05:57:29.298 INFO [stderr] 41 |             write!(&mut output, "{} ", self.bytes);
Nov 30 05:57:29.298 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:57:29.298 INFO [stderr]    |
Nov 30 05:57:29.298 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 05:57:29.298 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)
Nov 30 05:57:29.298 INFO [stderr] 
Nov 30 05:57:29.298 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 05:57:29.298 INFO [stderr]   --> src/word_count.rs:44:13
Nov 30 05:57:29.298 INFO [stderr]    |
Nov 30 05:57:29.298 INFO [stderr] 44 |             write!(&mut output, "{} ", self.chars);
Nov 30 05:57:29.298 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:57:29.298 INFO [stderr]    |
Nov 30 05:57:29.298 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 05:57:29.298 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)
Nov 30 05:57:29.298 INFO [stderr] 
Nov 30 05:57:29.299 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 05:57:29.299 INFO [stderr]   --> src/word_count.rs:47:13
Nov 30 05:57:29.299 INFO [stderr]    |
Nov 30 05:57:29.299 INFO [stderr] 47 |             write!(&mut output, "{} ", self.max_length);
Nov 30 05:57:29.299 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:57:29.299 INFO [stderr]    |
Nov 30 05:57:29.299 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 05:57:29.299 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)
Nov 30 05:57:29.299 INFO [stderr] 
Nov 30 05:57:29.457 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 05:57:29.457 INFO [stderr]   --> src/word_count.rs:35:13
Nov 30 05:57:29.457 INFO [stderr]    |
Nov 30 05:57:29.457 INFO [stderr] 35 |             write!(&mut output, "{} ", self.lines);
Nov 30 05:57:29.457 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:57:29.457 INFO [stderr]    |
Nov 30 05:57:29.458 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 30 05:57:29.458 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 05:57:29.458 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)
Nov 30 05:57:29.458 INFO [stderr] 
Nov 30 05:57:29.458 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 05:57:29.458 INFO [stderr]   --> src/word_count.rs:38:13
Nov 30 05:57:29.459 INFO [stderr]    |
Nov 30 05:57:29.459 INFO [stderr] 38 |             write!(&mut output, "{} ", self.words);
Nov 30 05:57:29.459 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:57:29.459 INFO [stderr]    |
Nov 30 05:57:29.459 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 05:57:29.459 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)
Nov 30 05:57:29.459 INFO [stderr] 
Nov 30 05:57:29.460 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 05:57:29.460 INFO [stderr]   --> src/word_count.rs:41:13
Nov 30 05:57:29.460 INFO [stderr]    |
Nov 30 05:57:29.460 INFO [stderr] 41 |             write!(&mut output, "{} ", self.bytes);
Nov 30 05:57:29.460 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:57:29.460 INFO [stderr]    |
Nov 30 05:57:29.460 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 05:57:29.460 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)
Nov 30 05:57:29.460 INFO [stderr] 
Nov 30 05:57:29.461 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 05:57:29.461 INFO [stderr]   --> src/word_count.rs:44:13
Nov 30 05:57:29.461 INFO [stderr]    |
Nov 30 05:57:29.461 INFO [stderr] 44 |             write!(&mut output, "{} ", self.chars);
Nov 30 05:57:29.461 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:57:29.461 INFO [stderr]    |
Nov 30 05:57:29.461 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 05:57:29.461 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)
Nov 30 05:57:29.462 INFO [stderr] 
Nov 30 05:57:29.462 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 05:57:29.462 INFO [stderr]   --> src/word_count.rs:47:13
Nov 30 05:57:29.462 INFO [stderr]    |
Nov 30 05:57:29.462 INFO [stderr] 47 |             write!(&mut output, "{} ", self.max_length);
Nov 30 05:57:29.462 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:57:29.462 INFO [stderr]    |
Nov 30 05:57:29.462 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 05:57:29.462 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)
Nov 30 05:57:29.462 INFO [stderr] 
Nov 30 05:57:29.493 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.61s
Nov 30 05:57:29.497 INFO [stderr] su: No module specific data is present
Nov 30 05:57:31.015 INFO running `"docker" "inspect" "b81991703a02ebecea9f1f17d6d3b5b30673413a1e6a8857be3a549e24c32534"`
Nov 30 05:57:31.292 INFO running `"docker" "rm" "-f" "b81991703a02ebecea9f1f17d6d3b5b30673413a1e6a8857be3a549e24c32534"`
Nov 30 05:57:31.576 INFO [stdout] b81991703a02ebecea9f1f17d6d3b5b30673413a1e6a8857be3a549e24c32534