Dec 02 08:19:56.055 INFO testing DenialAdams/t_test_runner against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 08:19:56.055 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-3/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 08:19:56.271 INFO [stdout] 50c0c45af3ebea0de5d2f3e2b464a232938fbfbded0557ef1c6b972c30e3b460
Dec 02 08:19:56.275 INFO running `"docker" "start" "-a" "50c0c45af3ebea0de5d2f3e2b464a232938fbfbded0557ef1c6b972c30e3b460"`
Dec 02 08:19:56.643 INFO [stderr] usermod: no changes
Dec 02 08:19:56.709 INFO [stderr]    Compiling os_pipe v0.8.0
Dec 02 08:19:57.551 INFO [stderr]    Compiling test_runner v0.3.0 (/source)
Dec 02 08:19:58.897 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:19:58.897 INFO [stderr]   --> src/main.rs:72:13
Dec 02 08:19:58.897 INFO [stderr]    |
Dec 02 08:19:58.897 INFO [stderr] 72 |             write!(&mut out_handle, "{}: ", entry.file_name().unwrap().to_str().unwrap());
Dec 02 08:19:58.897 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:19:58.897 INFO [stderr]    |
Dec 02 08:19:58.897 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 02 08:19:58.897 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:19:58.897 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 02 08:19:58.897 INFO [stderr] 
Dec 02 08:19:58.897 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:19:58.897 INFO [stderr]   --> src/main.rs:74:13
Dec 02 08:19:58.897 INFO [stderr]    |
Dec 02 08:19:58.897 INFO [stderr] 74 |             writeln!(&mut out_handle, "ok");
Dec 02 08:19:58.897 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:19:58.897 INFO [stderr]    |
Dec 02 08:19:58.897 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:19:58.897 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 02 08:19:58.897 INFO [stderr] 
Dec 02 08:19:58.897 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:19:58.897 INFO [stderr]   --> src/main.rs:81:13
Dec 02 08:19:58.897 INFO [stderr]    |
Dec 02 08:19:58.897 INFO [stderr] 81 |             writeln!(&mut out_handle, "--------------------");
Dec 02 08:19:58.897 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:19:58.897 INFO [stderr]    |
Dec 02 08:19:58.897 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:19:58.897 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 02 08:19:58.897 INFO [stderr] 
Dec 02 08:19:58.898 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:19:58.898 INFO [stderr]   --> src/main.rs:82:13
Dec 02 08:19:58.898 INFO [stderr]    |
Dec 02 08:19:58.898 INFO [stderr] 82 |             write!(&mut out_handle, "{}: ", entry.file_name().unwrap().to_str().unwrap());
Dec 02 08:19:58.898 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:19:58.898 INFO [stderr]    |
Dec 02 08:19:58.898 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:19:58.898 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 02 08:19:58.898 INFO [stderr] 
Dec 02 08:19:58.898 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:19:58.898 INFO [stderr]   --> src/main.rs:84:13
Dec 02 08:19:58.898 INFO [stderr]    |
Dec 02 08:19:58.898 INFO [stderr] 84 |             writeln!(&mut out_handle, "FAILED");
Dec 02 08:19:58.898 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:19:58.898 INFO [stderr]    |
Dec 02 08:19:58.898 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:19:58.898 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 02 08:19:58.898 INFO [stderr] 
Dec 02 08:19:58.898 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:19:58.898 INFO [stderr]   --> src/main.rs:88:19
Dec 02 08:19:58.898 INFO [stderr]    |
Dec 02 08:19:58.898 INFO [stderr] 88 |                   writeln!(&mut out_handle, "Compilation was supposed to fail, but it succeeded.");
Dec 02 08:19:58.898 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:19:58.898 INFO [stderr]    |
Dec 02 08:19:58.898 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:19:58.898 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 02 08:19:58.898 INFO [stderr] 
Dec 02 08:19:58.898 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:19:58.898 INFO [stderr]   --> src/main.rs:91:19
Dec 02 08:19:58.898 INFO [stderr]    |
Dec 02 08:19:58.898 INFO [stderr] 91 |                   writeln!(&mut out_handle, "Compilation was supposed to succeed, but it failed:");
Dec 02 08:19:58.898 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:19:58.898 INFO [stderr]    |
Dec 02 08:19:58.898 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:19:58.898 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 02 08:19:58.898 INFO [stderr] 
Dec 02 08:19:58.898 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:19:58.898 INFO [stderr]   --> src/main.rs:92:19
Dec 02 08:19:58.898 INFO [stderr]    |
Dec 02 08:19:58.898 INFO [stderr] 92 |                   writeln!(&mut out_handle, "```");
Dec 02 08:19:58.898 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:19:58.898 INFO [stderr]    |
Dec 02 08:19:58.898 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:19:58.898 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 02 08:19:58.898 INFO [stderr] 
Dec 02 08:19:58.898 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:19:58.898 INFO [stderr]   --> src/main.rs:93:19
Dec 02 08:19:58.898 INFO [stderr]    |
Dec 02 08:19:58.898 INFO [stderr] 93 |                   writeln!(&mut out_handle, "{}", String::from_utf8_lossy(&tc_output.stderr));
Dec 02 08:19:58.898 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:19:58.898 INFO [stderr]    |
Dec 02 08:19:58.898 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:19:58.898 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 02 08:19:58.898 INFO [stderr] 
Dec 02 08:19:58.898 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:19:58.898 INFO [stderr]   --> src/main.rs:94:19
Dec 02 08:19:58.898 INFO [stderr]    |
Dec 02 08:19:58.898 INFO [stderr] 94 |                   writeln!(&mut out_handle, "```");
Dec 02 08:19:58.898 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:19:58.898 INFO [stderr]    |
Dec 02 08:19:58.898 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:19:58.899 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 02 08:19:58.899 INFO [stderr] 
Dec 02 08:19:58.899 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:19:58.899 INFO [stderr]    --> src/main.rs:97:19
Dec 02 08:19:58.899 INFO [stderr]     |
Dec 02 08:19:58.899 INFO [stderr] 97  | /                   writeln!(
Dec 02 08:19:58.899 INFO [stderr] 98  | |                      &mut out_handle,
Dec 02 08:19:58.899 INFO [stderr] 99  | |                      "Compiled OK, but execution of the program produced a different result than expected:"
Dec 02 08:19:58.899 INFO [stderr] 100 | |                   );
Dec 02 08:19:58.899 INFO [stderr]     | |____________________^
Dec 02 08:19:58.899 INFO [stderr]     |
Dec 02 08:19:58.899 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:19:58.899 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 02 08:19:58.899 INFO [stderr] 
Dec 02 08:19:58.899 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:19:58.899 INFO [stderr]    --> src/main.rs:101:19
Dec 02 08:19:58.899 INFO [stderr]     |
Dec 02 08:19:58.899 INFO [stderr] 101 |                   writeln!(&mut out_handle, "```");
Dec 02 08:19:58.899 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:19:58.899 INFO [stderr]     |
Dec 02 08:19:58.899 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:19:58.899 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 02 08:19:58.899 INFO [stderr] 
Dec 02 08:19:58.899 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:19:58.899 INFO [stderr]    --> src/main.rs:103:19
Dec 02 08:19:58.899 INFO [stderr]     |
Dec 02 08:19:58.899 INFO [stderr] 103 |                   writeln!(&mut out_handle, "```");
Dec 02 08:19:58.899 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:19:58.899 INFO [stderr]     |
Dec 02 08:19:58.899 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:19:58.899 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 02 08:19:58.899 INFO [stderr] 
Dec 02 08:19:58.899 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:19:58.899 INFO [stderr]    --> src/main.rs:106:19
Dec 02 08:19:58.899 INFO [stderr]     |
Dec 02 08:19:58.899 INFO [stderr] 106 | /                   writeln!(
Dec 02 08:19:58.899 INFO [stderr] 107 | |                      &mut out_handle,
Dec 02 08:19:58.899 INFO [stderr] 108 | |                      "Failed to compile, but the compilation error was different than expected:"
Dec 02 08:19:58.899 INFO [stderr] 109 | |                   );
Dec 02 08:19:58.899 INFO [stderr]     | |____________________^
Dec 02 08:19:58.899 INFO [stderr]     |
Dec 02 08:19:58.899 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:19:58.899 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 02 08:19:58.899 INFO [stderr] 
Dec 02 08:19:58.899 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:19:58.899 INFO [stderr]    --> src/main.rs:110:19
Dec 02 08:19:58.899 INFO [stderr]     |
Dec 02 08:19:58.899 INFO [stderr] 110 |                   writeln!(&mut out_handle, "```");
Dec 02 08:19:58.899 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:19:58.899 INFO [stderr]     |
Dec 02 08:19:58.899 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:19:58.899 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 02 08:19:58.899 INFO [stderr] 
Dec 02 08:19:58.899 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:19:58.899 INFO [stderr]    --> src/main.rs:112:19
Dec 02 08:19:58.899 INFO [stderr]     |
Dec 02 08:19:58.899 INFO [stderr] 112 |                   writeln!(&mut out_handle, "```");
Dec 02 08:19:58.899 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:19:58.899 INFO [stderr]     |
Dec 02 08:19:58.899 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:19:58.899 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 02 08:19:58.899 INFO [stderr] 
Dec 02 08:19:58.899 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:19:58.900 INFO [stderr]    --> src/main.rs:115:13
Dec 02 08:19:58.900 INFO [stderr]     |
Dec 02 08:19:58.900 INFO [stderr] 115 |             writeln!(&mut out_handle, "--------------------");
Dec 02 08:19:58.900 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:19:58.900 INFO [stderr]     |
Dec 02 08:19:58.900 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:19:58.900 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 02 08:19:58.900 INFO [stderr] 
Dec 02 08:19:58.900 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:19:58.900 INFO [stderr]    --> src/main.rs:128:13
Dec 02 08:19:58.900 INFO [stderr]     |
Dec 02 08:19:58.900 INFO [stderr] 128 |             writeln!(t, "{}", x);
Dec 02 08:19:58.900 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:19:58.900 INFO [stderr]     |
Dec 02 08:19:58.900 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:19:58.900 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 02 08:19:58.900 INFO [stderr] 
Dec 02 08:19:58.900 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:19:58.900 INFO [stderr]    --> src/main.rs:132:13
Dec 02 08:19:58.900 INFO [stderr]     |
Dec 02 08:19:58.900 INFO [stderr] 132 |             writeln!(t, "+{}", x);
Dec 02 08:19:58.900 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:19:58.900 INFO [stderr]     |
Dec 02 08:19:58.900 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:19:58.900 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 02 08:19:58.900 INFO [stderr] 
Dec 02 08:19:58.900 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:19:58.900 INFO [stderr]    --> src/main.rs:136:13
Dec 02 08:19:58.900 INFO [stderr]     |
Dec 02 08:19:58.900 INFO [stderr] 136 |             writeln!(t, "-{}", x);
Dec 02 08:19:58.900 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:19:58.900 INFO [stderr]     |
Dec 02 08:19:58.900 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:19:58.900 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 02 08:19:58.900 INFO [stderr] 
Dec 02 08:19:59.831 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.17s
Dec 02 08:19:59.835 INFO [stderr] su: No module specific data is present
Dec 02 08:20:00.114 INFO running `"docker" "inspect" "50c0c45af3ebea0de5d2f3e2b464a232938fbfbded0557ef1c6b972c30e3b460"`
Dec 02 08:20:00.316 INFO running `"docker" "rm" "-f" "50c0c45af3ebea0de5d2f3e2b464a232938fbfbded0557ef1c6b972c30e3b460"`
Dec 02 08:20:00.587 INFO [stdout] 50c0c45af3ebea0de5d2f3e2b464a232938fbfbded0557ef1c6b972c30e3b460
Dec 02 08:20:00.597 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-3/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 08:20:00.975 INFO [stdout] 84bf47e2af08fac015de823c2ea5f0d8ac4968ac2874f7eebd186c6204f1dff3
Dec 02 08:20:00.977 INFO running `"docker" "start" "-a" "84bf47e2af08fac015de823c2ea5f0d8ac4968ac2874f7eebd186c6204f1dff3"`
Dec 02 08:20:02.010 INFO [stderr] usermod: no changes
Dec 02 08:20:02.070 INFO [stderr]    Compiling test_runner v0.3.0 (/source)
Dec 02 08:20:03.268 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:20:03.268 INFO [stderr]   --> src/main.rs:72:13
Dec 02 08:20:03.268 INFO [stderr]    |
Dec 02 08:20:03.268 INFO [stderr] 72 |             write!(&mut out_handle, "{}: ", entry.file_name().unwrap().to_str().unwrap());
Dec 02 08:20:03.268 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:20:03.268 INFO [stderr]    |
Dec 02 08:20:03.268 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 02 08:20:03.268 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:20:03.268 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 02 08:20:03.268 INFO [stderr] 
Dec 02 08:20:03.268 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:20:03.268 INFO [stderr]   --> src/main.rs:74:13
Dec 02 08:20:03.268 INFO [stderr]    |
Dec 02 08:20:03.268 INFO [stderr] 74 |             writeln!(&mut out_handle, "ok");
Dec 02 08:20:03.268 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:20:03.268 INFO [stderr]    |
Dec 02 08:20:03.268 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:20:03.268 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 02 08:20:03.268 INFO [stderr] 
Dec 02 08:20:03.268 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:20:03.268 INFO [stderr]   --> src/main.rs:81:13
Dec 02 08:20:03.268 INFO [stderr]    |
Dec 02 08:20:03.268 INFO [stderr] 81 |             writeln!(&mut out_handle, "--------------------");
Dec 02 08:20:03.268 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:20:03.268 INFO [stderr]    |
Dec 02 08:20:03.268 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:20:03.268 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 02 08:20:03.268 INFO [stderr] 
Dec 02 08:20:03.268 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:20:03.268 INFO [stderr]   --> src/main.rs:82:13
Dec 02 08:20:03.268 INFO [stderr]    |
Dec 02 08:20:03.268 INFO [stderr] 82 |             write!(&mut out_handle, "{}: ", entry.file_name().unwrap().to_str().unwrap());
Dec 02 08:20:03.268 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:20:03.268 INFO [stderr]    |
Dec 02 08:20:03.268 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:20:03.268 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 02 08:20:03.268 INFO [stderr] 
Dec 02 08:20:03.268 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:20:03.268 INFO [stderr]   --> src/main.rs:84:13
Dec 02 08:20:03.268 INFO [stderr]    |
Dec 02 08:20:03.268 INFO [stderr] 84 |             writeln!(&mut out_handle, "FAILED");
Dec 02 08:20:03.268 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:20:03.268 INFO [stderr]    |
Dec 02 08:20:03.268 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:20:03.268 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 02 08:20:03.268 INFO [stderr] 
Dec 02 08:20:03.268 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:20:03.268 INFO [stderr]   --> src/main.rs:88:19
Dec 02 08:20:03.268 INFO [stderr]    |
Dec 02 08:20:03.268 INFO [stderr] 88 |                   writeln!(&mut out_handle, "Compilation was supposed to fail, but it succeeded.");
Dec 02 08:20:03.268 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:20:03.268 INFO [stderr]    |
Dec 02 08:20:03.268 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:20:03.268 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 02 08:20:03.268 INFO [stderr] 
Dec 02 08:20:03.268 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:20:03.268 INFO [stderr]   --> src/main.rs:91:19
Dec 02 08:20:03.268 INFO [stderr]    |
Dec 02 08:20:03.268 INFO [stderr] 91 |                   writeln!(&mut out_handle, "Compilation was supposed to succeed, but it failed:");
Dec 02 08:20:03.268 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:20:03.268 INFO [stderr]    |
Dec 02 08:20:03.268 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:20:03.268 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 02 08:20:03.268 INFO [stderr] 
Dec 02 08:20:03.268 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:20:03.268 INFO [stderr]   --> src/main.rs:92:19
Dec 02 08:20:03.268 INFO [stderr]    |
Dec 02 08:20:03.268 INFO [stderr] 92 |                   writeln!(&mut out_handle, "```");
Dec 02 08:20:03.268 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:20:03.268 INFO [stderr]    |
Dec 02 08:20:03.268 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:20:03.268 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 02 08:20:03.268 INFO [stderr] 
Dec 02 08:20:03.268 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:20:03.268 INFO [stderr]   --> src/main.rs:93:19
Dec 02 08:20:03.268 INFO [stderr]    |
Dec 02 08:20:03.268 INFO [stderr] 93 |                   writeln!(&mut out_handle, "{}", String::from_utf8_lossy(&tc_output.stderr));
Dec 02 08:20:03.268 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:20:03.268 INFO [stderr]    |
Dec 02 08:20:03.268 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:20:03.268 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 02 08:20:03.269 INFO [stderr] 
Dec 02 08:20:03.269 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:20:03.269 INFO [stderr]   --> src/main.rs:94:19
Dec 02 08:20:03.269 INFO [stderr]    |
Dec 02 08:20:03.269 INFO [stderr] 94 |                   writeln!(&mut out_handle, "```");
Dec 02 08:20:03.269 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:20:03.269 INFO [stderr]    |
Dec 02 08:20:03.269 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:20:03.269 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 02 08:20:03.269 INFO [stderr] 
Dec 02 08:20:03.269 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:20:03.269 INFO [stderr]    --> src/main.rs:97:19
Dec 02 08:20:03.269 INFO [stderr]     |
Dec 02 08:20:03.269 INFO [stderr] 97  | /                   writeln!(
Dec 02 08:20:03.269 INFO [stderr] 98  | |                      &mut out_handle,
Dec 02 08:20:03.269 INFO [stderr] 99  | |                      "Compiled OK, but execution of the program produced a different result than expected:"
Dec 02 08:20:03.269 INFO [stderr] 100 | |                   );
Dec 02 08:20:03.269 INFO [stderr]     | |____________________^
Dec 02 08:20:03.269 INFO [stderr]     |
Dec 02 08:20:03.269 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:20:03.269 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 02 08:20:03.269 INFO [stderr] 
Dec 02 08:20:03.269 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:20:03.269 INFO [stderr]    --> src/main.rs:101:19
Dec 02 08:20:03.269 INFO [stderr]     |
Dec 02 08:20:03.269 INFO [stderr] 101 |                   writeln!(&mut out_handle, "```");
Dec 02 08:20:03.269 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:20:03.269 INFO [stderr]     |
Dec 02 08:20:03.269 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:20:03.269 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 02 08:20:03.269 INFO [stderr] 
Dec 02 08:20:03.269 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:20:03.269 INFO [stderr]    --> src/main.rs:103:19
Dec 02 08:20:03.269 INFO [stderr]     |
Dec 02 08:20:03.269 INFO [stderr] 103 |                   writeln!(&mut out_handle, "```");
Dec 02 08:20:03.269 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:20:03.269 INFO [stderr]     |
Dec 02 08:20:03.269 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:20:03.269 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 02 08:20:03.269 INFO [stderr] 
Dec 02 08:20:03.269 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:20:03.269 INFO [stderr]    --> src/main.rs:106:19
Dec 02 08:20:03.269 INFO [stderr]     |
Dec 02 08:20:03.269 INFO [stderr] 106 | /                   writeln!(
Dec 02 08:20:03.269 INFO [stderr] 107 | |                      &mut out_handle,
Dec 02 08:20:03.269 INFO [stderr] 108 | |                      "Failed to compile, but the compilation error was different than expected:"
Dec 02 08:20:03.269 INFO [stderr] 109 | |                   );
Dec 02 08:20:03.269 INFO [stderr]     | |____________________^
Dec 02 08:20:03.269 INFO [stderr]     |
Dec 02 08:20:03.269 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:20:03.269 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 02 08:20:03.269 INFO [stderr] 
Dec 02 08:20:03.269 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:20:03.269 INFO [stderr]    --> src/main.rs:110:19
Dec 02 08:20:03.269 INFO [stderr]     |
Dec 02 08:20:03.269 INFO [stderr] 110 |                   writeln!(&mut out_handle, "```");
Dec 02 08:20:03.269 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:20:03.269 INFO [stderr]     |
Dec 02 08:20:03.270 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:20:03.270 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 02 08:20:03.270 INFO [stderr] 
Dec 02 08:20:03.270 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:20:03.270 INFO [stderr]    --> src/main.rs:112:19
Dec 02 08:20:03.270 INFO [stderr]     |
Dec 02 08:20:03.270 INFO [stderr] 112 |                   writeln!(&mut out_handle, "```");
Dec 02 08:20:03.270 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:20:03.270 INFO [stderr]     |
Dec 02 08:20:03.270 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:20:03.270 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 02 08:20:03.270 INFO [stderr] 
Dec 02 08:20:03.270 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:20:03.270 INFO [stderr]    --> src/main.rs:115:13
Dec 02 08:20:03.270 INFO [stderr]     |
Dec 02 08:20:03.270 INFO [stderr] 115 |             writeln!(&mut out_handle, "--------------------");
Dec 02 08:20:03.270 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:20:03.270 INFO [stderr]     |
Dec 02 08:20:03.270 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:20:03.270 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 02 08:20:03.270 INFO [stderr] 
Dec 02 08:20:03.270 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:20:03.270 INFO [stderr]    --> src/main.rs:128:13
Dec 02 08:20:03.270 INFO [stderr]     |
Dec 02 08:20:03.270 INFO [stderr] 128 |             writeln!(t, "{}", x);
Dec 02 08:20:03.270 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:20:03.270 INFO [stderr]     |
Dec 02 08:20:03.270 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:20:03.270 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 02 08:20:03.270 INFO [stderr] 
Dec 02 08:20:03.270 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:20:03.270 INFO [stderr]    --> src/main.rs:132:13
Dec 02 08:20:03.270 INFO [stderr]     |
Dec 02 08:20:03.270 INFO [stderr] 132 |             writeln!(t, "+{}", x);
Dec 02 08:20:03.270 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:20:03.270 INFO [stderr]     |
Dec 02 08:20:03.270 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:20:03.270 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 02 08:20:03.270 INFO [stderr] 
Dec 02 08:20:03.270 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:20:03.270 INFO [stderr]    --> src/main.rs:136:13
Dec 02 08:20:03.270 INFO [stderr]     |
Dec 02 08:20:03.270 INFO [stderr] 136 |             writeln!(t, "-{}", x);
Dec 02 08:20:03.270 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:20:03.270 INFO [stderr]     |
Dec 02 08:20:03.270 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:20:03.270 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 02 08:20:03.270 INFO [stderr] 
Dec 02 08:20:03.654 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.62s
Dec 02 08:20:03.658 INFO [stderr] su: No module specific data is present
Dec 02 08:20:03.984 INFO running `"docker" "inspect" "84bf47e2af08fac015de823c2ea5f0d8ac4968ac2874f7eebd186c6204f1dff3"`
Dec 02 08:20:04.117 INFO running `"docker" "rm" "-f" "84bf47e2af08fac015de823c2ea5f0d8ac4968ac2874f7eebd186c6204f1dff3"`
Dec 02 08:20:04.223 INFO [stdout] 84bf47e2af08fac015de823c2ea5f0d8ac4968ac2874f7eebd186c6204f1dff3
Dec 02 08:20:04.228 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-3/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 08:20:04.494 INFO [stdout] 231084a2d1b8123dc3eac66582e5523d44b7256a139079266c145e349ac85e89
Dec 02 08:20:04.500 INFO running `"docker" "start" "-a" "231084a2d1b8123dc3eac66582e5523d44b7256a139079266c145e349ac85e89"`
Dec 02 08:20:05.013 INFO [stderr] usermod: no changes
Dec 02 08:20:05.066 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
Dec 02 08:20:05.068 INFO [stderr]      Running /target/debug/deps/test_runner-9bc55f84a6c06211
Dec 02 08:20:05.072 INFO [stdout] 
Dec 02 08:20:05.072 INFO [stdout] running 0 tests
Dec 02 08:20:05.072 INFO [stdout] 
Dec 02 08:20:05.072 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 02 08:20:05.072 INFO [stdout] 
Dec 02 08:20:05.076 INFO [stderr] su: No module specific data is present
Dec 02 08:20:05.356 INFO running `"docker" "inspect" "231084a2d1b8123dc3eac66582e5523d44b7256a139079266c145e349ac85e89"`
Dec 02 08:20:05.475 INFO running `"docker" "rm" "-f" "231084a2d1b8123dc3eac66582e5523d44b7256a139079266c145e349ac85e89"`
Dec 02 08:20:05.617 INFO [stdout] 231084a2d1b8123dc3eac66582e5523d44b7256a139079266c145e349ac85e89
