Nov 28 08:24:49.965 INFO checking brandonpollack23/rust_wc against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 08:24:49.966 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-7/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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 28 08:24:50.393 INFO [stdout] 6eb042ff78b484e462e7c0001bd0c3298925e565dc7af002a231ec9ce2617fb8
Nov 28 08:24:50.400 INFO running `"docker" "start" "-a" "6eb042ff78b484e462e7c0001bd0c3298925e565dc7af002a231ec9ce2617fb8"`
Nov 28 08:24:51.516 INFO [stderr] usermod: no changes
Nov 28 08:24:51.616 INFO [stderr]     Checking rust_wc v0.1.0 (/source)
Nov 28 08:24:52.828 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 08:24:52.828 INFO [stderr]   --> src/word_count.rs:35:13
Nov 28 08:24:52.828 INFO [stderr]    |
Nov 28 08:24:52.828 INFO [stderr] 35 |             write!(&mut output, "{} ", self.lines);
Nov 28 08:24:52.828 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 08:24:52.828 INFO [stderr]    |
Nov 28 08:24:52.828 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 28 08:24:52.828 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 08:24:52.828 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 28 08:24:52.828 INFO [stderr] 
Nov 28 08:24:52.828 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 08:24:52.828 INFO [stderr]   --> src/word_count.rs:38:13
Nov 28 08:24:52.828 INFO [stderr]    |
Nov 28 08:24:52.828 INFO [stderr] 38 |             write!(&mut output, "{} ", self.words);
Nov 28 08:24:52.828 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 08:24:52.828 INFO [stderr]    |
Nov 28 08:24:52.828 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 08:24:52.828 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 28 08:24:52.828 INFO [stderr] 
Nov 28 08:24:52.838 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 08:24:52.838 INFO [stderr]   --> src/word_count.rs:41:13
Nov 28 08:24:52.838 INFO [stderr]    |
Nov 28 08:24:52.838 INFO [stderr] 41 |             write!(&mut output, "{} ", self.bytes);
Nov 28 08:24:52.838 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 08:24:52.838 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 08:24:52.838 INFO [stderr]   --> src/word_count.rs:35:13
Nov 28 08:24:52.838 INFO [stderr]    |
Nov 28 08:24:52.838 INFO [stderr] 35 |             write!(&mut output, "{} ", self.lines);
Nov 28 08:24:52.838 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 08:24:52.838 INFO [stderr]    |
Nov 28 08:24:52.838 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 28 08:24:52.838 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 08:24:52.838 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 28 08:24:52.838 INFO [stderr] 
Nov 28 08:24:52.838 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 08:24:52.838 INFO [stderr]   --> src/word_count.rs:38:13
Nov 28 08:24:52.838 INFO [stderr]    |
Nov 28 08:24:52.838 INFO [stderr] 38 |             write!(&mut output, "{} ", self.words);
Nov 28 08:24:52.838 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 08:24:52.838 INFO [stderr]    |
Nov 28 08:24:52.838 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 08:24:52.838 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 28 08:24:52.838 INFO [stderr] 
Nov 28 08:24:52.838 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 08:24:52.838 INFO [stderr]   --> src/word_count.rs:41:13
Nov 28 08:24:52.838 INFO [stderr]    |
Nov 28 08:24:52.838 INFO [stderr] 41 |             write!(&mut output, "{} ", self.bytes);
Nov 28 08:24:52.838 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 08:24:52.838 INFO [stderr]    |
Nov 28 08:24:52.838 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 08:24:52.838 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 28 08:24:52.838 INFO [stderr] 
Nov 28 08:24:52.838 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 08:24:52.838 INFO [stderr]   --> src/word_count.rs:44:13
Nov 28 08:24:52.838 INFO [stderr]    |
Nov 28 08:24:52.838 INFO [stderr] 44 |             write!(&mut output, "{} ", self.chars);
Nov 28 08:24:52.838 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 08:24:52.838 INFO [stderr]    |
Nov 28 08:24:52.838 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 08:24:52.838 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 28 08:24:52.838 INFO [stderr] 
Nov 28 08:24:52.838 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 08:24:52.838 INFO [stderr]   --> src/word_count.rs:47:13
Nov 28 08:24:52.838 INFO [stderr]    |
Nov 28 08:24:52.838 INFO [stderr] 47 |             write!(&mut output, "{} ", self.max_length);
Nov 28 08:24:52.838 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 08:24:52.838 INFO [stderr]    |
Nov 28 08:24:52.838 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 08:24:52.838 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 28 08:24:52.838 INFO [stderr] 
Nov 28 08:24:52.838 INFO [stderr]    |
Nov 28 08:24:52.838 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 08:24:52.838 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 28 08:24:52.838 INFO [stderr] 
Nov 28 08:24:52.838 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 08:24:52.838 INFO [stderr]   --> src/word_count.rs:44:13
Nov 28 08:24:52.838 INFO [stderr]    |
Nov 28 08:24:52.838 INFO [stderr] 44 |             write!(&mut output, "{} ", self.chars);
Nov 28 08:24:52.838 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 08:24:52.838 INFO [stderr]    |
Nov 28 08:24:52.839 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 08:24:52.839 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 28 08:24:52.839 INFO [stderr] 
Nov 28 08:24:52.839 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 08:24:52.839 INFO [stderr]   --> src/word_count.rs:47:13
Nov 28 08:24:52.839 INFO [stderr]    |
Nov 28 08:24:52.839 INFO [stderr] 47 |             write!(&mut output, "{} ", self.max_length);
Nov 28 08:24:52.839 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 08:24:52.839 INFO [stderr]    |
Nov 28 08:24:52.839 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 08:24:52.839 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 28 08:24:52.840 INFO [stderr] 
Nov 28 08:24:52.880 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.33s
Nov 28 08:24:52.880 INFO [stderr] su: No module specific data is present
Nov 28 08:24:54.246 INFO running `"docker" "inspect" "6eb042ff78b484e462e7c0001bd0c3298925e565dc7af002a231ec9ce2617fb8"`
Nov 28 08:24:54.620 INFO running `"docker" "rm" "-f" "6eb042ff78b484e462e7c0001bd0c3298925e565dc7af002a231ec9ce2617fb8"`
Nov 28 08:24:54.932 INFO [stdout] 6eb042ff78b484e462e7c0001bd0c3298925e565dc7af002a231ec9ce2617fb8