Dec 07 16:14:20.604 INFO testing fstream-0.1.2 against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 07 16:14:20.604 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 07 16:14:20.849 INFO [stdout] 46d1122c5e98997e168f1d78c29120aa4201165abfbdf7a41818634d10918db6
Dec 07 16:14:20.854 INFO running `"docker" "start" "-a" "46d1122c5e98997e168f1d78c29120aa4201165abfbdf7a41818634d10918db6"`
Dec 07 16:14:21.434 INFO [stderr] usermod: no changes
Dec 07 16:14:21.463 INFO [stderr]    Compiling fstream v0.1.2 (/source)
Dec 07 16:14:21.963 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 07 16:14:21.963 INFO [stderr]   --> src/lib.rs:21:13
Dec 07 16:14:21.963 INFO [stderr]    |
Dec 07 16:14:21.963 INFO [stderr] 21 |             file.read_to_end(&mut data);
Dec 07 16:14:21.963 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 07 16:14:21.963 INFO [stderr]    |
Dec 07 16:14:21.963 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 07 16:14:21.963 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 07 16:14:21.963 INFO [stderr] 
Dec 07 16:14:21.963 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 07 16:14:21.963 INFO [stderr]   --> src/lib.rs:41:13
Dec 07 16:14:21.963 INFO [stderr]    |
Dec 07 16:14:21.963 INFO [stderr] 41 |             file.read_to_string(&mut content);
Dec 07 16:14:21.963 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 07 16:14:21.963 INFO [stderr]    |
Dec 07 16:14:21.963 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 07 16:14:21.964 INFO [stderr] 
Dec 07 16:14:21.964 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 07 16:14:21.964 INFO [stderr]   --> src/lib.rs:61:13
Dec 07 16:14:21.964 INFO [stderr]    |
Dec 07 16:14:21.964 INFO [stderr] 61 |             file.read_to_string(&mut content);
Dec 07 16:14:21.964 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 07 16:14:21.964 INFO [stderr]    |
Dec 07 16:14:21.964 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 07 16:14:21.964 INFO [stderr] 
Dec 07 16:14:21.964 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 07 16:14:21.964 INFO [stderr]   --> src/lib.rs:87:13
Dec 07 16:14:21.964 INFO [stderr]    |
Dec 07 16:14:21.964 INFO [stderr] 87 |             file.read_to_string(&mut content);
Dec 07 16:14:21.964 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 07 16:14:21.964 INFO [stderr]    |
Dec 07 16:14:21.964 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 07 16:14:21.964 INFO [stderr] 
Dec 07 16:14:21.988 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
Dec 07 16:14:21.989 INFO [stderr] su: No module specific data is present
Dec 07 16:14:22.330 INFO running `"docker" "inspect" "46d1122c5e98997e168f1d78c29120aa4201165abfbdf7a41818634d10918db6"`
Dec 07 16:14:22.548 INFO running `"docker" "rm" "-f" "46d1122c5e98997e168f1d78c29120aa4201165abfbdf7a41818634d10918db6"`
Dec 07 16:14:22.843 INFO [stdout] 46d1122c5e98997e168f1d78c29120aa4201165abfbdf7a41818634d10918db6
Dec 07 16:14:22.843 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 07 16:14:23.191 INFO [stdout] ea54b615b5276ad7c300ef518566684033c52d5b8da0fc3d441ddfc744682837
Dec 07 16:14:23.193 INFO running `"docker" "start" "-a" "ea54b615b5276ad7c300ef518566684033c52d5b8da0fc3d441ddfc744682837"`
Dec 07 16:14:23.932 INFO [stderr] usermod: no changes
Dec 07 16:14:23.996 INFO [stderr]    Compiling fstream v0.1.2 (/source)
Dec 07 16:14:24.792 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 07 16:14:24.792 INFO [stderr]   --> src/lib.rs:21:13
Dec 07 16:14:24.792 INFO [stderr]    |
Dec 07 16:14:24.792 INFO [stderr] 21 |             file.read_to_end(&mut data);
Dec 07 16:14:24.792 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 07 16:14:24.792 INFO [stderr]    |
Dec 07 16:14:24.792 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 07 16:14:24.792 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 07 16:14:24.792 INFO [stderr] 
Dec 07 16:14:24.792 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 07 16:14:24.792 INFO [stderr]   --> src/lib.rs:41:13
Dec 07 16:14:24.792 INFO [stderr]    |
Dec 07 16:14:24.792 INFO [stderr] 41 |             file.read_to_string(&mut content);
Dec 07 16:14:24.792 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 07 16:14:24.792 INFO [stderr]    |
Dec 07 16:14:24.792 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 07 16:14:24.792 INFO [stderr] 
Dec 07 16:14:24.792 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 07 16:14:24.792 INFO [stderr]   --> src/lib.rs:61:13
Dec 07 16:14:24.792 INFO [stderr]    |
Dec 07 16:14:24.792 INFO [stderr] 61 |             file.read_to_string(&mut content);
Dec 07 16:14:24.792 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 07 16:14:24.792 INFO [stderr]    |
Dec 07 16:14:24.792 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 07 16:14:24.792 INFO [stderr] 
Dec 07 16:14:24.792 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 07 16:14:24.792 INFO [stderr]   --> src/lib.rs:87:13
Dec 07 16:14:24.792 INFO [stderr]    |
Dec 07 16:14:24.792 INFO [stderr] 87 |             file.read_to_string(&mut content);
Dec 07 16:14:24.792 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 07 16:14:24.792 INFO [stderr]    |
Dec 07 16:14:24.792 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 07 16:14:24.792 INFO [stderr] 
Dec 07 16:14:25.014 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.06s
Dec 07 16:14:25.017 INFO [stderr] su: No module specific data is present
Dec 07 16:14:25.554 INFO running `"docker" "inspect" "ea54b615b5276ad7c300ef518566684033c52d5b8da0fc3d441ddfc744682837"`
Dec 07 16:14:25.818 INFO running `"docker" "rm" "-f" "ea54b615b5276ad7c300ef518566684033c52d5b8da0fc3d441ddfc744682837"`
Dec 07 16:14:26.068 INFO [stdout] ea54b615b5276ad7c300ef518566684033c52d5b8da0fc3d441ddfc744682837
Dec 07 16:14:26.074 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 07 16:14:26.434 INFO [stdout] 21b8598c9949a98ac46b702774ebe9159c9e12b2adddc2c53888f51fe6e1709e
Dec 07 16:14:26.438 INFO running `"docker" "start" "-a" "21b8598c9949a98ac46b702774ebe9159c9e12b2adddc2c53888f51fe6e1709e"`
Dec 07 16:14:27.301 INFO [stderr] usermod: no changes
Dec 07 16:14:27.346 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 07 16:14:27.353 INFO [stderr]      Running /target/debug/deps/fstream-797e9cea6be63fc8
Dec 07 16:14:27.358 INFO [stderr]    Doc-tests fstream
Dec 07 16:14:27.358 INFO [stdout] 
Dec 07 16:14:27.358 INFO [stdout] running 0 tests
Dec 07 16:14:27.358 INFO [stdout] 
Dec 07 16:14:27.358 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 07 16:14:27.358 INFO [stdout] 
Dec 07 16:14:28.340 INFO [stdout] 
Dec 07 16:14:28.340 INFO [stdout] running 0 tests
Dec 07 16:14:28.340 INFO [stdout] 
Dec 07 16:14:28.340 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 07 16:14:28.340 INFO [stdout] 
Dec 07 16:14:28.348 INFO [stderr] su: No module specific data is present
Dec 07 16:14:29.083 INFO running `"docker" "inspect" "21b8598c9949a98ac46b702774ebe9159c9e12b2adddc2c53888f51fe6e1709e"`
Dec 07 16:14:29.362 INFO running `"docker" "rm" "-f" "21b8598c9949a98ac46b702774ebe9159c9e12b2adddc2c53888f51fe6e1709e"`
Dec 07 16:14:29.580 INFO [stdout] 21b8598c9949a98ac46b702774ebe9159c9e12b2adddc2c53888f51fe6e1709e