Dec 14 00:50:13.411 INFO testing brandonpollack23/rust_wc against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 14 00:50:13.411 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-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 14 00:50:13.921 INFO [stdout] 5c11f12a353f781ab1103b24137d944da83e0829d1760c2611f5aec4cc8f6ed2
Dec 14 00:50:13.923 INFO running `"docker" "start" "-a" "5c11f12a353f781ab1103b24137d944da83e0829d1760c2611f5aec4cc8f6ed2"`
Dec 14 00:50:15.658 INFO [stderr] usermod: no changes
Dec 14 00:50:15.759 INFO [stderr]    Compiling rust_wc v0.1.0 (/source)
Dec 14 00:50:16.635 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 00:50:16.635 INFO [stderr]   --> src/word_count.rs:35:13
Dec 14 00:50:16.635 INFO [stderr]    |
Dec 14 00:50:16.635 INFO [stderr] 35 |             write!(&mut output, "{} ", self.lines);
Dec 14 00:50:16.635 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 00:50:16.635 INFO [stderr]    |
Dec 14 00:50:16.635 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 14 00:50:16.635 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 00:50:16.635 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)
Dec 14 00:50:16.636 INFO [stderr] 
Dec 14 00:50:16.636 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 00:50:16.636 INFO [stderr]   --> src/word_count.rs:38:13
Dec 14 00:50:16.636 INFO [stderr]    |
Dec 14 00:50:16.636 INFO [stderr] 38 |             write!(&mut output, "{} ", self.words);
Dec 14 00:50:16.636 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 00:50:16.636 INFO [stderr]    |
Dec 14 00:50:16.636 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 00:50:16.636 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)
Dec 14 00:50:16.636 INFO [stderr] 
Dec 14 00:50:16.636 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 00:50:16.636 INFO [stderr]   --> src/word_count.rs:41:13
Dec 14 00:50:16.636 INFO [stderr]    |
Dec 14 00:50:16.636 INFO [stderr] 41 |             write!(&mut output, "{} ", self.bytes);
Dec 14 00:50:16.636 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 00:50:16.636 INFO [stderr]    |
Dec 14 00:50:16.636 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 00:50:16.636 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)
Dec 14 00:50:16.637 INFO [stderr] 
Dec 14 00:50:16.637 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 00:50:16.637 INFO [stderr]   --> src/word_count.rs:44:13
Dec 14 00:50:16.637 INFO [stderr]    |
Dec 14 00:50:16.637 INFO [stderr] 44 |             write!(&mut output, "{} ", self.chars);
Dec 14 00:50:16.637 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 00:50:16.637 INFO [stderr]    |
Dec 14 00:50:16.637 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 00:50:16.637 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)
Dec 14 00:50:16.637 INFO [stderr] 
Dec 14 00:50:16.637 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 00:50:16.637 INFO [stderr]   --> src/word_count.rs:47:13
Dec 14 00:50:16.637 INFO [stderr]    |
Dec 14 00:50:16.637 INFO [stderr] 47 |             write!(&mut output, "{} ", self.max_length);
Dec 14 00:50:16.637 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 00:50:16.637 INFO [stderr]    |
Dec 14 00:50:16.637 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 00:50:16.637 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)
Dec 14 00:50:16.637 INFO [stderr] 
Dec 14 00:50:18.331 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.63s
Dec 14 00:50:18.331 INFO [stderr] su: No module specific data is present
Dec 14 00:50:19.001 INFO running `"docker" "inspect" "5c11f12a353f781ab1103b24137d944da83e0829d1760c2611f5aec4cc8f6ed2"`
Dec 14 00:50:19.280 INFO running `"docker" "rm" "-f" "5c11f12a353f781ab1103b24137d944da83e0829d1760c2611f5aec4cc8f6ed2"`
Dec 14 00:50:19.527 INFO [stdout] 5c11f12a353f781ab1103b24137d944da83e0829d1760c2611f5aec4cc8f6ed2
Dec 14 00:50:19.529 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-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 14 00:50:19.915 INFO [stdout] a9f0d494d7e4df69a7bfb07220482935731ea05d431f8778de38765d0a4eb4e2
Dec 14 00:50:19.923 INFO running `"docker" "start" "-a" "a9f0d494d7e4df69a7bfb07220482935731ea05d431f8778de38765d0a4eb4e2"`
Dec 14 00:50:20.927 INFO [stderr] usermod: no changes
Dec 14 00:50:21.069 INFO [stderr]    Compiling rust_wc v0.1.0 (/source)
Dec 14 00:50:21.791 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 00:50:21.791 INFO [stderr]   --> src/word_count.rs:35:13
Dec 14 00:50:21.791 INFO [stderr]    |
Dec 14 00:50:21.791 INFO [stderr] 35 |             write!(&mut output, "{} ", self.lines);
Dec 14 00:50:21.791 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 00:50:21.791 INFO [stderr]    |
Dec 14 00:50:21.791 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 14 00:50:21.791 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 00:50:21.791 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)
Dec 14 00:50:21.791 INFO [stderr] 
Dec 14 00:50:21.791 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 00:50:21.791 INFO [stderr]   --> src/word_count.rs:38:13
Dec 14 00:50:21.791 INFO [stderr]    |
Dec 14 00:50:21.791 INFO [stderr] 38 |             write!(&mut output, "{} ", self.words);
Dec 14 00:50:21.791 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 00:50:21.791 INFO [stderr]    |
Dec 14 00:50:21.791 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 00:50:21.791 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)
Dec 14 00:50:21.791 INFO [stderr] 
Dec 14 00:50:21.791 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 00:50:21.791 INFO [stderr]   --> src/word_count.rs:41:13
Dec 14 00:50:21.791 INFO [stderr]    |
Dec 14 00:50:21.791 INFO [stderr] 41 |             write!(&mut output, "{} ", self.bytes);
Dec 14 00:50:21.791 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 00:50:21.791 INFO [stderr]    |
Dec 14 00:50:21.791 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 00:50:21.791 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)
Dec 14 00:50:21.791 INFO [stderr] 
Dec 14 00:50:21.791 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 00:50:21.791 INFO [stderr]   --> src/word_count.rs:44:13
Dec 14 00:50:21.791 INFO [stderr]    |
Dec 14 00:50:21.791 INFO [stderr] 44 |             write!(&mut output, "{} ", self.chars);
Dec 14 00:50:21.791 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 00:50:21.791 INFO [stderr]    |
Dec 14 00:50:21.791 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 00:50:21.791 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)
Dec 14 00:50:21.791 INFO [stderr] 
Dec 14 00:50:21.791 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 00:50:21.791 INFO [stderr]   --> src/word_count.rs:47:13
Dec 14 00:50:21.791 INFO [stderr]    |
Dec 14 00:50:21.791 INFO [stderr] 47 |             write!(&mut output, "{} ", self.max_length);
Dec 14 00:50:21.791 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 00:50:21.791 INFO [stderr]    |
Dec 14 00:50:21.791 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 00:50:21.791 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)
Dec 14 00:50:21.791 INFO [stderr] 
Dec 14 00:50:22.125 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.19s
Dec 14 00:50:22.129 INFO [stderr] su: No module specific data is present
Dec 14 00:50:22.756 INFO running `"docker" "inspect" "a9f0d494d7e4df69a7bfb07220482935731ea05d431f8778de38765d0a4eb4e2"`
Dec 14 00:50:22.989 INFO running `"docker" "rm" "-f" "a9f0d494d7e4df69a7bfb07220482935731ea05d431f8778de38765d0a4eb4e2"`
Dec 14 00:50:23.373 INFO [stdout] a9f0d494d7e4df69a7bfb07220482935731ea05d431f8778de38765d0a4eb4e2
Dec 14 00:50:23.375 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen" "-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 14 00:50:23.808 INFO [stdout] 420999081b5a5a4546b616e484ec5731f51c182af84ee76b76f0690152dd10f7
Dec 14 00:50:23.811 INFO running `"docker" "start" "-a" "420999081b5a5a4546b616e484ec5731f51c182af84ee76b76f0690152dd10f7"`
Dec 14 00:50:25.002 INFO [stderr] usermod: no changes
Dec 14 00:50:25.079 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
Dec 14 00:50:25.090 INFO [stderr]      Running /target/debug/deps/rust_wc-32839475b44b0785
Dec 14 00:50:25.099 INFO [stdout] 
Dec 14 00:50:25.099 INFO [stdout] running 0 tests
Dec 14 00:50:25.099 INFO [stdout] 
Dec 14 00:50:25.099 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 00:50:25.099 INFO [stdout] 
Dec 14 00:50:25.103 INFO [stderr] su: No module specific data is present
Dec 14 00:50:25.632 INFO running `"docker" "inspect" "420999081b5a5a4546b616e484ec5731f51c182af84ee76b76f0690152dd10f7"`
Dec 14 00:50:25.956 INFO running `"docker" "rm" "-f" "420999081b5a5a4546b616e484ec5731f51c182af84ee76b76f0690152dd10f7"`
Dec 14 00:50:26.399 INFO [stdout] 420999081b5a5a4546b616e484ec5731f51c182af84ee76b76f0690152dd10f7