Dec 06 14:35:42.137 INFO testing DenialAdams/t_test_runner against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 06 14:35:42.137 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-5/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 06 14:35:42.653 INFO [stdout] 37b00fe523fea562880ebe9b4d551cb13816396869d00a89791b53b26acf8658
Dec 06 14:35:42.660 INFO running `"docker" "start" "-a" "37b00fe523fea562880ebe9b4d551cb13816396869d00a89791b53b26acf8658"`
Dec 06 14:35:43.349 INFO [stderr] usermod: no changes
Dec 06 14:35:43.441 INFO [stderr]    Compiling os_pipe v0.8.0
Dec 06 14:35:44.183 INFO [stderr]    Compiling test_runner v0.3.0 (/source)
Dec 06 14:35:45.471 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:45.472 INFO [stderr]   --> src/main.rs:72:13
Dec 06 14:35:45.472 INFO [stderr]    |
Dec 06 14:35:45.472 INFO [stderr] 72 |             write!(&mut out_handle, "{}: ", entry.file_name().unwrap().to_str().unwrap());
Dec 06 14:35:45.472 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:45.472 INFO [stderr]    |
Dec 06 14:35:45.472 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 06 14:35:45.472 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:45.472 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 06 14:35:45.472 INFO [stderr] 
Dec 06 14:35:45.472 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:45.472 INFO [stderr]   --> src/main.rs:74:13
Dec 06 14:35:45.472 INFO [stderr]    |
Dec 06 14:35:45.472 INFO [stderr] 74 |             writeln!(&mut out_handle, "ok");
Dec 06 14:35:45.472 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:45.472 INFO [stderr]    |
Dec 06 14:35:45.472 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:45.472 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 06 14:35:45.472 INFO [stderr] 
Dec 06 14:35:45.472 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:45.472 INFO [stderr]   --> src/main.rs:81:13
Dec 06 14:35:45.472 INFO [stderr]    |
Dec 06 14:35:45.472 INFO [stderr] 81 |             writeln!(&mut out_handle, "--------------------");
Dec 06 14:35:45.472 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:45.472 INFO [stderr]    |
Dec 06 14:35:45.472 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:45.472 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 06 14:35:45.472 INFO [stderr] 
Dec 06 14:35:45.472 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:45.472 INFO [stderr]   --> src/main.rs:82:13
Dec 06 14:35:45.472 INFO [stderr]    |
Dec 06 14:35:45.472 INFO [stderr] 82 |             write!(&mut out_handle, "{}: ", entry.file_name().unwrap().to_str().unwrap());
Dec 06 14:35:45.472 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:45.472 INFO [stderr]    |
Dec 06 14:35:45.472 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:45.472 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 06 14:35:45.472 INFO [stderr] 
Dec 06 14:35:45.472 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:45.472 INFO [stderr]   --> src/main.rs:84:13
Dec 06 14:35:45.472 INFO [stderr]    |
Dec 06 14:35:45.472 INFO [stderr] 84 |             writeln!(&mut out_handle, "FAILED");
Dec 06 14:35:45.472 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:45.472 INFO [stderr]    |
Dec 06 14:35:45.472 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:45.472 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 06 14:35:45.472 INFO [stderr] 
Dec 06 14:35:45.472 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:45.472 INFO [stderr]   --> src/main.rs:88:19
Dec 06 14:35:45.472 INFO [stderr]    |
Dec 06 14:35:45.472 INFO [stderr] 88 |                   writeln!(&mut out_handle, "Compilation was supposed to fail, but it succeeded.");
Dec 06 14:35:45.472 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:45.472 INFO [stderr]    |
Dec 06 14:35:45.472 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:45.472 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 06 14:35:45.472 INFO [stderr] 
Dec 06 14:35:45.472 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:45.472 INFO [stderr]   --> src/main.rs:91:19
Dec 06 14:35:45.472 INFO [stderr]    |
Dec 06 14:35:45.472 INFO [stderr] 91 |                   writeln!(&mut out_handle, "Compilation was supposed to succeed, but it failed:");
Dec 06 14:35:45.472 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:45.472 INFO [stderr]    |
Dec 06 14:35:45.472 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:45.472 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 06 14:35:45.472 INFO [stderr] 
Dec 06 14:35:45.472 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:45.472 INFO [stderr]   --> src/main.rs:92:19
Dec 06 14:35:45.472 INFO [stderr]    |
Dec 06 14:35:45.472 INFO [stderr] 92 |                   writeln!(&mut out_handle, "```");
Dec 06 14:35:45.472 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:45.472 INFO [stderr]    |
Dec 06 14:35:45.472 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:45.472 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 06 14:35:45.472 INFO [stderr] 
Dec 06 14:35:45.472 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:45.472 INFO [stderr]   --> src/main.rs:93:19
Dec 06 14:35:45.472 INFO [stderr]    |
Dec 06 14:35:45.472 INFO [stderr] 93 |                   writeln!(&mut out_handle, "{}", String::from_utf8_lossy(&tc_output.stderr));
Dec 06 14:35:45.472 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:45.472 INFO [stderr]    |
Dec 06 14:35:45.472 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:45.472 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 06 14:35:45.472 INFO [stderr] 
Dec 06 14:35:45.472 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:45.472 INFO [stderr]   --> src/main.rs:94:19
Dec 06 14:35:45.472 INFO [stderr]    |
Dec 06 14:35:45.472 INFO [stderr] 94 |                   writeln!(&mut out_handle, "```");
Dec 06 14:35:45.472 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:45.472 INFO [stderr]    |
Dec 06 14:35:45.473 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:45.473 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 06 14:35:45.473 INFO [stderr] 
Dec 06 14:35:45.473 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:45.473 INFO [stderr]    --> src/main.rs:97:19
Dec 06 14:35:45.473 INFO [stderr]     |
Dec 06 14:35:45.473 INFO [stderr] 97  | /                   writeln!(
Dec 06 14:35:45.473 INFO [stderr] 98  | |                      &mut out_handle,
Dec 06 14:35:45.473 INFO [stderr] 99  | |                      "Compiled OK, but execution of the program produced a different result than expected:"
Dec 06 14:35:45.473 INFO [stderr] 100 | |                   );
Dec 06 14:35:45.473 INFO [stderr]     | |____________________^
Dec 06 14:35:45.473 INFO [stderr]     |
Dec 06 14:35:45.473 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:45.473 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 06 14:35:45.473 INFO [stderr] 
Dec 06 14:35:45.473 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:45.473 INFO [stderr]    --> src/main.rs:101:19
Dec 06 14:35:45.473 INFO [stderr]     |
Dec 06 14:35:45.473 INFO [stderr] 101 |                   writeln!(&mut out_handle, "```");
Dec 06 14:35:45.473 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:45.473 INFO [stderr]     |
Dec 06 14:35:45.473 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:45.473 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 06 14:35:45.473 INFO [stderr] 
Dec 06 14:35:45.473 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:45.473 INFO [stderr]    --> src/main.rs:103:19
Dec 06 14:35:45.473 INFO [stderr]     |
Dec 06 14:35:45.473 INFO [stderr] 103 |                   writeln!(&mut out_handle, "```");
Dec 06 14:35:45.473 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:45.473 INFO [stderr]     |
Dec 06 14:35:45.473 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:45.473 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 06 14:35:45.473 INFO [stderr] 
Dec 06 14:35:45.473 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:45.473 INFO [stderr]    --> src/main.rs:106:19
Dec 06 14:35:45.473 INFO [stderr]     |
Dec 06 14:35:45.473 INFO [stderr] 106 | /                   writeln!(
Dec 06 14:35:45.473 INFO [stderr] 107 | |                      &mut out_handle,
Dec 06 14:35:45.473 INFO [stderr] 108 | |                      "Failed to compile, but the compilation error was different than expected:"
Dec 06 14:35:45.473 INFO [stderr] 109 | |                   );
Dec 06 14:35:45.473 INFO [stderr]     | |____________________^
Dec 06 14:35:45.473 INFO [stderr]     |
Dec 06 14:35:45.473 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:45.473 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 06 14:35:45.473 INFO [stderr] 
Dec 06 14:35:45.473 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:45.473 INFO [stderr]    --> src/main.rs:110:19
Dec 06 14:35:45.473 INFO [stderr]     |
Dec 06 14:35:45.473 INFO [stderr] 110 |                   writeln!(&mut out_handle, "```");
Dec 06 14:35:45.473 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:45.473 INFO [stderr]     |
Dec 06 14:35:45.473 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:45.473 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 06 14:35:45.473 INFO [stderr] 
Dec 06 14:35:45.473 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:45.473 INFO [stderr]    --> src/main.rs:112:19
Dec 06 14:35:45.473 INFO [stderr]     |
Dec 06 14:35:45.473 INFO [stderr] 112 |                   writeln!(&mut out_handle, "```");
Dec 06 14:35:45.473 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:45.473 INFO [stderr]     |
Dec 06 14:35:45.473 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:45.473 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 06 14:35:45.473 INFO [stderr] 
Dec 06 14:35:45.474 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:45.474 INFO [stderr]    --> src/main.rs:115:13
Dec 06 14:35:45.474 INFO [stderr]     |
Dec 06 14:35:45.474 INFO [stderr] 115 |             writeln!(&mut out_handle, "--------------------");
Dec 06 14:35:45.474 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:45.474 INFO [stderr]     |
Dec 06 14:35:45.474 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:45.474 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 06 14:35:45.474 INFO [stderr] 
Dec 06 14:35:45.474 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:45.474 INFO [stderr]    --> src/main.rs:128:13
Dec 06 14:35:45.474 INFO [stderr]     |
Dec 06 14:35:45.474 INFO [stderr] 128 |             writeln!(t, "{}", x);
Dec 06 14:35:45.474 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:45.474 INFO [stderr]     |
Dec 06 14:35:45.474 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:45.474 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 06 14:35:45.474 INFO [stderr] 
Dec 06 14:35:45.474 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:45.474 INFO [stderr]    --> src/main.rs:132:13
Dec 06 14:35:45.474 INFO [stderr]     |
Dec 06 14:35:45.474 INFO [stderr] 132 |             writeln!(t, "+{}", x);
Dec 06 14:35:45.474 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:45.474 INFO [stderr]     |
Dec 06 14:35:45.474 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:45.474 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 06 14:35:45.474 INFO [stderr] 
Dec 06 14:35:45.474 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:45.474 INFO [stderr]    --> src/main.rs:136:13
Dec 06 14:35:45.474 INFO [stderr]     |
Dec 06 14:35:45.474 INFO [stderr] 136 |             writeln!(t, "-{}", x);
Dec 06 14:35:45.474 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:45.474 INFO [stderr]     |
Dec 06 14:35:45.474 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:45.474 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 06 14:35:45.474 INFO [stderr] 
Dec 06 14:35:46.296 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.92s
Dec 06 14:35:46.301 INFO [stderr] su: No module specific data is present
Dec 06 14:35:46.580 INFO running `"docker" "inspect" "37b00fe523fea562880ebe9b4d551cb13816396869d00a89791b53b26acf8658"`
Dec 06 14:35:46.670 INFO running `"docker" "rm" "-f" "37b00fe523fea562880ebe9b4d551cb13816396869d00a89791b53b26acf8658"`
Dec 06 14:35:46.827 INFO [stdout] 37b00fe523fea562880ebe9b4d551cb13816396869d00a89791b53b26acf8658
Dec 06 14:35:46.830 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-5/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 06 14:35:47.024 INFO [stdout] 1d4951ea3065c3da4d3ea113cb9a148c2060d6911ac3f5de1c64601abd15ede3
Dec 06 14:35:47.028 INFO running `"docker" "start" "-a" "1d4951ea3065c3da4d3ea113cb9a148c2060d6911ac3f5de1c64601abd15ede3"`
Dec 06 14:35:47.691 INFO [stderr] usermod: no changes
Dec 06 14:35:47.746 INFO [stderr]    Compiling test_runner v0.3.0 (/source)
Dec 06 14:35:49.018 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:49.018 INFO [stderr]   --> src/main.rs:72:13
Dec 06 14:35:49.018 INFO [stderr]    |
Dec 06 14:35:49.018 INFO [stderr] 72 |             write!(&mut out_handle, "{}: ", entry.file_name().unwrap().to_str().unwrap());
Dec 06 14:35:49.018 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:49.018 INFO [stderr]    |
Dec 06 14:35:49.018 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 06 14:35:49.018 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:49.018 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 06 14:35:49.018 INFO [stderr] 
Dec 06 14:35:49.018 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:49.018 INFO [stderr]   --> src/main.rs:74:13
Dec 06 14:35:49.018 INFO [stderr]    |
Dec 06 14:35:49.018 INFO [stderr] 74 |             writeln!(&mut out_handle, "ok");
Dec 06 14:35:49.018 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:49.018 INFO [stderr]    |
Dec 06 14:35:49.018 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:49.018 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 06 14:35:49.018 INFO [stderr] 
Dec 06 14:35:49.018 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:49.018 INFO [stderr]   --> src/main.rs:81:13
Dec 06 14:35:49.018 INFO [stderr]    |
Dec 06 14:35:49.018 INFO [stderr] 81 |             writeln!(&mut out_handle, "--------------------");
Dec 06 14:35:49.018 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:49.018 INFO [stderr]    |
Dec 06 14:35:49.018 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:49.018 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 06 14:35:49.018 INFO [stderr] 
Dec 06 14:35:49.018 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:49.018 INFO [stderr]   --> src/main.rs:82:13
Dec 06 14:35:49.018 INFO [stderr]    |
Dec 06 14:35:49.018 INFO [stderr] 82 |             write!(&mut out_handle, "{}: ", entry.file_name().unwrap().to_str().unwrap());
Dec 06 14:35:49.018 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:49.018 INFO [stderr]    |
Dec 06 14:35:49.018 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:49.018 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 06 14:35:49.018 INFO [stderr] 
Dec 06 14:35:49.018 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:49.018 INFO [stderr]   --> src/main.rs:84:13
Dec 06 14:35:49.018 INFO [stderr]    |
Dec 06 14:35:49.018 INFO [stderr] 84 |             writeln!(&mut out_handle, "FAILED");
Dec 06 14:35:49.018 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:49.018 INFO [stderr]    |
Dec 06 14:35:49.018 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:49.018 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 06 14:35:49.018 INFO [stderr] 
Dec 06 14:35:49.018 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:49.018 INFO [stderr]   --> src/main.rs:88:19
Dec 06 14:35:49.018 INFO [stderr]    |
Dec 06 14:35:49.018 INFO [stderr] 88 |                   writeln!(&mut out_handle, "Compilation was supposed to fail, but it succeeded.");
Dec 06 14:35:49.018 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:49.018 INFO [stderr]    |
Dec 06 14:35:49.018 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:49.018 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 06 14:35:49.018 INFO [stderr] 
Dec 06 14:35:49.018 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:49.018 INFO [stderr]   --> src/main.rs:91:19
Dec 06 14:35:49.019 INFO [stderr]    |
Dec 06 14:35:49.019 INFO [stderr] 91 |                   writeln!(&mut out_handle, "Compilation was supposed to succeed, but it failed:");
Dec 06 14:35:49.019 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:49.019 INFO [stderr]    |
Dec 06 14:35:49.019 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:49.019 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 06 14:35:49.019 INFO [stderr] 
Dec 06 14:35:49.019 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:49.019 INFO [stderr]   --> src/main.rs:92:19
Dec 06 14:35:49.019 INFO [stderr]    |
Dec 06 14:35:49.019 INFO [stderr] 92 |                   writeln!(&mut out_handle, "```");
Dec 06 14:35:49.019 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:49.019 INFO [stderr]    |
Dec 06 14:35:49.019 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:49.019 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 06 14:35:49.019 INFO [stderr] 
Dec 06 14:35:49.019 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:49.019 INFO [stderr]   --> src/main.rs:93:19
Dec 06 14:35:49.019 INFO [stderr]    |
Dec 06 14:35:49.019 INFO [stderr] 93 |                   writeln!(&mut out_handle, "{}", String::from_utf8_lossy(&tc_output.stderr));
Dec 06 14:35:49.019 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:49.019 INFO [stderr]    |
Dec 06 14:35:49.019 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:49.019 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 06 14:35:49.019 INFO [stderr] 
Dec 06 14:35:49.019 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:49.019 INFO [stderr]   --> src/main.rs:94:19
Dec 06 14:35:49.019 INFO [stderr]    |
Dec 06 14:35:49.019 INFO [stderr] 94 |                   writeln!(&mut out_handle, "```");
Dec 06 14:35:49.019 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:49.019 INFO [stderr]    |
Dec 06 14:35:49.019 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:49.019 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 06 14:35:49.019 INFO [stderr] 
Dec 06 14:35:49.019 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:49.019 INFO [stderr]    --> src/main.rs:97:19
Dec 06 14:35:49.019 INFO [stderr]     |
Dec 06 14:35:49.019 INFO [stderr] 97  | /                   writeln!(
Dec 06 14:35:49.019 INFO [stderr] 98  | |                      &mut out_handle,
Dec 06 14:35:49.019 INFO [stderr] 99  | |                      "Compiled OK, but execution of the program produced a different result than expected:"
Dec 06 14:35:49.019 INFO [stderr] 100 | |                   );
Dec 06 14:35:49.019 INFO [stderr]     | |____________________^
Dec 06 14:35:49.019 INFO [stderr]     |
Dec 06 14:35:49.019 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:49.019 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 06 14:35:49.019 INFO [stderr] 
Dec 06 14:35:49.019 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:49.019 INFO [stderr]    --> src/main.rs:101:19
Dec 06 14:35:49.019 INFO [stderr]     |
Dec 06 14:35:49.019 INFO [stderr] 101 |                   writeln!(&mut out_handle, "```");
Dec 06 14:35:49.019 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:49.019 INFO [stderr]     |
Dec 06 14:35:49.019 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:49.019 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 06 14:35:49.019 INFO [stderr] 
Dec 06 14:35:49.019 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:49.019 INFO [stderr]    --> src/main.rs:103:19
Dec 06 14:35:49.019 INFO [stderr]     |
Dec 06 14:35:49.019 INFO [stderr] 103 |                   writeln!(&mut out_handle, "```");
Dec 06 14:35:49.019 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:49.019 INFO [stderr]     |
Dec 06 14:35:49.019 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:49.019 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 06 14:35:49.019 INFO [stderr] 
Dec 06 14:35:49.019 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:49.019 INFO [stderr]    --> src/main.rs:106:19
Dec 06 14:35:49.019 INFO [stderr]     |
Dec 06 14:35:49.019 INFO [stderr] 106 | /                   writeln!(
Dec 06 14:35:49.019 INFO [stderr] 107 | |                      &mut out_handle,
Dec 06 14:35:49.019 INFO [stderr] 108 | |                      "Failed to compile, but the compilation error was different than expected:"
Dec 06 14:35:49.019 INFO [stderr] 109 | |                   );
Dec 06 14:35:49.019 INFO [stderr]     | |____________________^
Dec 06 14:35:49.019 INFO [stderr]     |
Dec 06 14:35:49.019 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:49.019 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 06 14:35:49.019 INFO [stderr] 
Dec 06 14:35:49.019 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:49.019 INFO [stderr]    --> src/main.rs:110:19
Dec 06 14:35:49.019 INFO [stderr]     |
Dec 06 14:35:49.019 INFO [stderr] 110 |                   writeln!(&mut out_handle, "```");
Dec 06 14:35:49.019 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:49.020 INFO [stderr]     |
Dec 06 14:35:49.020 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:49.020 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 06 14:35:49.020 INFO [stderr] 
Dec 06 14:35:49.020 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:49.020 INFO [stderr]    --> src/main.rs:112:19
Dec 06 14:35:49.020 INFO [stderr]     |
Dec 06 14:35:49.020 INFO [stderr] 112 |                   writeln!(&mut out_handle, "```");
Dec 06 14:35:49.020 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:49.020 INFO [stderr]     |
Dec 06 14:35:49.020 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:49.020 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 06 14:35:49.020 INFO [stderr] 
Dec 06 14:35:49.020 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:49.020 INFO [stderr]    --> src/main.rs:115:13
Dec 06 14:35:49.020 INFO [stderr]     |
Dec 06 14:35:49.020 INFO [stderr] 115 |             writeln!(&mut out_handle, "--------------------");
Dec 06 14:35:49.020 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:49.020 INFO [stderr]     |
Dec 06 14:35:49.020 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:49.020 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 06 14:35:49.020 INFO [stderr] 
Dec 06 14:35:49.020 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:49.020 INFO [stderr]    --> src/main.rs:128:13
Dec 06 14:35:49.020 INFO [stderr]     |
Dec 06 14:35:49.020 INFO [stderr] 128 |             writeln!(t, "{}", x);
Dec 06 14:35:49.020 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:49.020 INFO [stderr]     |
Dec 06 14:35:49.020 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:49.020 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 06 14:35:49.020 INFO [stderr] 
Dec 06 14:35:49.020 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:49.020 INFO [stderr]    --> src/main.rs:132:13
Dec 06 14:35:49.020 INFO [stderr]     |
Dec 06 14:35:49.020 INFO [stderr] 132 |             writeln!(t, "+{}", x);
Dec 06 14:35:49.020 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:49.020 INFO [stderr]     |
Dec 06 14:35:49.020 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:49.020 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 06 14:35:49.020 INFO [stderr] 
Dec 06 14:35:49.020 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:35:49.020 INFO [stderr]    --> src/main.rs:136:13
Dec 06 14:35:49.020 INFO [stderr]     |
Dec 06 14:35:49.020 INFO [stderr] 136 |             writeln!(t, "-{}", x);
Dec 06 14:35:49.020 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:35:49.020 INFO [stderr]     |
Dec 06 14:35:49.020 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:35:49.020 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 06 14:35:49.020 INFO [stderr] 
Dec 06 14:35:49.216 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.51s
Dec 06 14:35:49.220 INFO [stderr] su: No module specific data is present
Dec 06 14:35:49.545 INFO running `"docker" "inspect" "1d4951ea3065c3da4d3ea113cb9a148c2060d6911ac3f5de1c64601abd15ede3"`
Dec 06 14:35:49.600 INFO running `"docker" "rm" "-f" "1d4951ea3065c3da4d3ea113cb9a148c2060d6911ac3f5de1c64601abd15ede3"`
Dec 06 14:35:49.679 INFO [stdout] 1d4951ea3065c3da4d3ea113cb9a148c2060d6911ac3f5de1c64601abd15ede3
Dec 06 14:35:49.681 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-5/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 06 14:35:49.804 INFO [stdout] ec81a7beb8f01a43a8ebfbce7ceb424998942c2121fa411ec33f402402264347
Dec 06 14:35:49.805 INFO running `"docker" "start" "-a" "ec81a7beb8f01a43a8ebfbce7ceb424998942c2121fa411ec33f402402264347"`
Dec 06 14:35:50.255 INFO [stderr] usermod: no changes
Dec 06 14:35:50.311 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
Dec 06 14:35:50.314 INFO [stderr]      Running /target/debug/deps/test_runner-481c37f680076cb4
Dec 06 14:35:50.316 INFO [stdout] 
Dec 06 14:35:50.316 INFO [stdout] running 0 tests
Dec 06 14:35:50.316 INFO [stdout] 
Dec 06 14:35:50.316 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 14:35:50.316 INFO [stdout] 
Dec 06 14:35:50.317 INFO [stderr] su: No module specific data is present
Dec 06 14:35:50.535 INFO running `"docker" "inspect" "ec81a7beb8f01a43a8ebfbce7ceb424998942c2121fa411ec33f402402264347"`
Dec 06 14:35:50.598 INFO running `"docker" "rm" "-f" "ec81a7beb8f01a43a8ebfbce7ceb424998942c2121fa411ec33f402402264347"`
Dec 06 14:35:50.732 INFO [stdout] ec81a7beb8f01a43a8ebfbce7ceb424998942c2121fa411ec33f402402264347