Nov 30 05:57:25.975 INFO checking brandonpollack23/rust_wc against try#32252761328f59ccfadb1bafb8148c685bc830b3 for pr-56323
Nov 30 05:57:25.976 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-6/try#32252761328f59ccfadb1bafb8148c685bc830b3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56323/try#32252761328f59ccfadb1bafb8148c685bc830b3:/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 +32252761328f59ccfadb1bafb8148c685bc830b3-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 05:57:26.532 INFO [stdout] 698c22be92b65a2e924f73d2ab4e60befe8ada92519238c42d2d79ae729d867a
Nov 30 05:57:26.536 INFO running `"docker" "start" "-a" "698c22be92b65a2e924f73d2ab4e60befe8ada92519238c42d2d79ae729d867a"`
Nov 30 05:57:27.821 INFO [stderr] usermod: no changes
Nov 30 05:57:27.929 INFO [stderr]     Checking clap v2.32.0
Nov 30 05:57:33.360 INFO [stderr]     Checking rust_wc v0.1.0 (/source)
Nov 30 05:57:34.292 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 05:57:34.292 INFO [stderr]   --> src/word_count.rs:35:13
Nov 30 05:57:34.292 INFO [stderr]    |
Nov 30 05:57:34.292 INFO [stderr] 35 |             write!(&mut output, "{} ", self.lines);
Nov 30 05:57:34.292 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:57:34.292 INFO [stderr]    |
Nov 30 05:57:34.292 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 30 05:57:34.292 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 05:57:34.292 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 05:57:34.292 INFO [stderr] 
Nov 30 05:57:34.292 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 05:57:34.293 INFO [stderr]   --> src/word_count.rs:38:13
Nov 30 05:57:34.293 INFO [stderr]    |
Nov 30 05:57:34.293 INFO [stderr] 38 |             write!(&mut output, "{} ", self.words);
Nov 30 05:57:34.293 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:57:34.293 INFO [stderr]    |
Nov 30 05:57:34.293 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 05:57:34.293 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 05:57:34.293 INFO [stderr] 
Nov 30 05:57:34.293 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 05:57:34.293 INFO [stderr]   --> src/word_count.rs:41:13
Nov 30 05:57:34.293 INFO [stderr]    |
Nov 30 05:57:34.293 INFO [stderr] 41 |             write!(&mut output, "{} ", self.bytes);
Nov 30 05:57:34.293 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:57:34.293 INFO [stderr]    |
Nov 30 05:57:34.293 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 05:57:34.293 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 05:57:34.293 INFO [stderr] 
Nov 30 05:57:34.293 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 05:57:34.293 INFO [stderr]   --> src/word_count.rs:44:13
Nov 30 05:57:34.293 INFO [stderr]    |
Nov 30 05:57:34.293 INFO [stderr] 44 |             write!(&mut output, "{} ", self.chars);
Nov 30 05:57:34.293 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:57:34.293 INFO [stderr]    |
Nov 30 05:57:34.293 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 05:57:34.293 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 05:57:34.293 INFO [stderr] 
Nov 30 05:57:34.293 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 05:57:34.293 INFO [stderr]   --> src/word_count.rs:47:13
Nov 30 05:57:34.293 INFO [stderr]    |
Nov 30 05:57:34.293 INFO [stderr] 47 |             write!(&mut output, "{} ", self.max_length);
Nov 30 05:57:34.293 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:57:34.293 INFO [stderr]    |
Nov 30 05:57:34.293 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 05:57:34.293 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 05:57:34.293 INFO [stderr] 
Nov 30 05:57:34.516 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 05:57:34.516 INFO [stderr]   --> src/word_count.rs:35:13
Nov 30 05:57:34.516 INFO [stderr]    |
Nov 30 05:57:34.516 INFO [stderr] 35 |             write!(&mut output, "{} ", self.lines);
Nov 30 05:57:34.516 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:57:34.516 INFO [stderr]    |
Nov 30 05:57:34.516 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 30 05:57:34.516 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 05:57:34.516 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 05:57:34.516 INFO [stderr] 
Nov 30 05:57:34.516 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 05:57:34.516 INFO [stderr]   --> src/word_count.rs:38:13
Nov 30 05:57:34.516 INFO [stderr]    |
Nov 30 05:57:34.516 INFO [stderr] 38 |             write!(&mut output, "{} ", self.words);
Nov 30 05:57:34.516 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:57:34.516 INFO [stderr]    |
Nov 30 05:57:34.516 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 05:57:34.516 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 05:57:34.516 INFO [stderr] 
Nov 30 05:57:34.517 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 05:57:34.517 INFO [stderr]   --> src/word_count.rs:41:13
Nov 30 05:57:34.517 INFO [stderr]    |
Nov 30 05:57:34.517 INFO [stderr] 41 |             write!(&mut output, "{} ", self.bytes);
Nov 30 05:57:34.517 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:57:34.517 INFO [stderr]    |
Nov 30 05:57:34.517 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 05:57:34.517 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 05:57:34.517 INFO [stderr] 
Nov 30 05:57:34.517 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 05:57:34.517 INFO [stderr]   --> src/word_count.rs:44:13
Nov 30 05:57:34.517 INFO [stderr]    |
Nov 30 05:57:34.517 INFO [stderr] 44 |             write!(&mut output, "{} ", self.chars);
Nov 30 05:57:34.517 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:57:34.517 INFO [stderr]    |
Nov 30 05:57:34.517 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 05:57:34.517 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 05:57:34.517 INFO [stderr] 
Nov 30 05:57:34.517 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 05:57:34.517 INFO [stderr]   --> src/word_count.rs:47:13
Nov 30 05:57:34.517 INFO [stderr]    |
Nov 30 05:57:34.517 INFO [stderr] 47 |             write!(&mut output, "{} ", self.max_length);
Nov 30 05:57:34.517 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 05:57:34.517 INFO [stderr]    |
Nov 30 05:57:34.517 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 05:57:34.517 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 05:57:34.517 INFO [stderr] 
Nov 30 05:57:34.532 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.67s
Nov 30 05:57:34.548 INFO [stderr] su: No module specific data is present
Nov 30 05:57:35.484 INFO running `"docker" "inspect" "698c22be92b65a2e924f73d2ab4e60befe8ada92519238c42d2d79ae729d867a"`
Nov 30 05:57:35.811 INFO running `"docker" "rm" "-f" "698c22be92b65a2e924f73d2ab4e60befe8ada92519238c42d2d79ae729d867a"`
Nov 30 05:57:36.108 INFO [stdout] 698c22be92b65a2e924f73d2ab4e60befe8ada92519238c42d2d79ae729d867a