Nov 17 15:55:28.729 INFO testing DenialAdams/t_test_runner against master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c for pr-55982
Nov 17 15:55:28.729 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-2/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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"`
Nov 17 15:55:29.079 INFO [stdout] 9af5219c15ed4a3cf780d7f728c53226614a029c88e3a50673a2e887e5dbc71c
Nov 17 15:55:29.084 INFO running `"docker" "start" "-a" "9af5219c15ed4a3cf780d7f728c53226614a029c88e3a50673a2e887e5dbc71c"`
Nov 17 15:55:29.646 INFO [stderr] usermod: no changes
Nov 17 15:55:29.743 INFO [stderr]    Compiling os_pipe v0.8.0
Nov 17 15:55:30.476 INFO [stderr]    Compiling test_runner v0.3.0 (/source)
Nov 17 15:55:31.640 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:31.640 INFO [stderr]   --> src/main.rs:72:13
Nov 17 15:55:31.640 INFO [stderr]    |
Nov 17 15:55:31.640 INFO [stderr] 72 |             write!(&mut out_handle, "{}: ", entry.file_name().unwrap().to_str().unwrap());
Nov 17 15:55:31.640 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:31.640 INFO [stderr]    |
Nov 17 15:55:31.640 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 17 15:55:31.640 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:31.640 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:31.640 INFO [stderr] 
Nov 17 15:55:31.640 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:31.640 INFO [stderr]   --> src/main.rs:74:13
Nov 17 15:55:31.640 INFO [stderr]    |
Nov 17 15:55:31.640 INFO [stderr] 74 |             writeln!(&mut out_handle, "ok");
Nov 17 15:55:31.640 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:31.640 INFO [stderr]    |
Nov 17 15:55:31.640 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:31.640 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:31.641 INFO [stderr] 
Nov 17 15:55:31.641 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:31.641 INFO [stderr]   --> src/main.rs:81:13
Nov 17 15:55:31.641 INFO [stderr]    |
Nov 17 15:55:31.641 INFO [stderr] 81 |             writeln!(&mut out_handle, "--------------------");
Nov 17 15:55:31.641 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:31.641 INFO [stderr]    |
Nov 17 15:55:31.641 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:31.641 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:31.641 INFO [stderr] 
Nov 17 15:55:31.641 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:31.641 INFO [stderr]   --> src/main.rs:82:13
Nov 17 15:55:31.641 INFO [stderr]    |
Nov 17 15:55:31.641 INFO [stderr] 82 |             write!(&mut out_handle, "{}: ", entry.file_name().unwrap().to_str().unwrap());
Nov 17 15:55:31.641 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:31.641 INFO [stderr]    |
Nov 17 15:55:31.641 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:31.641 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:31.641 INFO [stderr] 
Nov 17 15:55:31.641 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:31.641 INFO [stderr]   --> src/main.rs:84:13
Nov 17 15:55:31.641 INFO [stderr]    |
Nov 17 15:55:31.641 INFO [stderr] 84 |             writeln!(&mut out_handle, "FAILED");
Nov 17 15:55:31.641 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:31.641 INFO [stderr]    |
Nov 17 15:55:31.641 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:31.641 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:31.641 INFO [stderr] 
Nov 17 15:55:31.641 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:31.641 INFO [stderr]   --> src/main.rs:88:19
Nov 17 15:55:31.641 INFO [stderr]    |
Nov 17 15:55:31.641 INFO [stderr] 88 |                   writeln!(&mut out_handle, "Compilation was supposed to fail, but it succeeded.");
Nov 17 15:55:31.641 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:31.641 INFO [stderr]    |
Nov 17 15:55:31.641 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:31.641 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:31.641 INFO [stderr] 
Nov 17 15:55:31.641 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:31.641 INFO [stderr]   --> src/main.rs:91:19
Nov 17 15:55:31.641 INFO [stderr]    |
Nov 17 15:55:31.641 INFO [stderr] 91 |                   writeln!(&mut out_handle, "Compilation was supposed to succeed, but it failed:");
Nov 17 15:55:31.641 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:31.641 INFO [stderr]    |
Nov 17 15:55:31.641 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:31.641 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:31.641 INFO [stderr] 
Nov 17 15:55:31.641 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:31.641 INFO [stderr]   --> src/main.rs:92:19
Nov 17 15:55:31.641 INFO [stderr]    |
Nov 17 15:55:31.641 INFO [stderr] 92 |                   writeln!(&mut out_handle, "```");
Nov 17 15:55:31.641 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:31.641 INFO [stderr]    |
Nov 17 15:55:31.641 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:31.641 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:31.641 INFO [stderr] 
Nov 17 15:55:31.641 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:31.641 INFO [stderr]   --> src/main.rs:93:19
Nov 17 15:55:31.641 INFO [stderr]    |
Nov 17 15:55:31.641 INFO [stderr] 93 |                   writeln!(&mut out_handle, "{}", String::from_utf8_lossy(&tc_output.stderr));
Nov 17 15:55:31.641 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:31.641 INFO [stderr]    |
Nov 17 15:55:31.641 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:31.641 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:31.641 INFO [stderr] 
Nov 17 15:55:31.641 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:31.641 INFO [stderr]   --> src/main.rs:94:19
Nov 17 15:55:31.641 INFO [stderr]    |
Nov 17 15:55:31.641 INFO [stderr] 94 |                   writeln!(&mut out_handle, "```");
Nov 17 15:55:31.641 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:31.641 INFO [stderr]    |
Nov 17 15:55:31.641 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:31.641 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:31.641 INFO [stderr] 
Nov 17 15:55:31.641 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:31.641 INFO [stderr]    --> src/main.rs:97:19
Nov 17 15:55:31.641 INFO [stderr]     |
Nov 17 15:55:31.641 INFO [stderr] 97  | /                   writeln!(
Nov 17 15:55:31.641 INFO [stderr] 98  | |                      &mut out_handle,
Nov 17 15:55:31.641 INFO [stderr] 99  | |                      "Compiled OK, but execution of the program produced a different result than expected:"
Nov 17 15:55:31.641 INFO [stderr] 100 | |                   );
Nov 17 15:55:31.641 INFO [stderr]     | |____________________^
Nov 17 15:55:31.641 INFO [stderr]     |
Nov 17 15:55:31.641 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:31.641 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:31.642 INFO [stderr] 
Nov 17 15:55:31.642 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:31.642 INFO [stderr]    --> src/main.rs:101:19
Nov 17 15:55:31.642 INFO [stderr]     |
Nov 17 15:55:31.642 INFO [stderr] 101 |                   writeln!(&mut out_handle, "```");
Nov 17 15:55:31.642 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:31.642 INFO [stderr]     |
Nov 17 15:55:31.642 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:31.642 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:31.642 INFO [stderr] 
Nov 17 15:55:31.642 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:31.642 INFO [stderr]    --> src/main.rs:103:19
Nov 17 15:55:31.642 INFO [stderr]     |
Nov 17 15:55:31.642 INFO [stderr] 103 |                   writeln!(&mut out_handle, "```");
Nov 17 15:55:31.642 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:31.642 INFO [stderr]     |
Nov 17 15:55:31.642 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:31.642 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:31.642 INFO [stderr] 
Nov 17 15:55:31.642 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:31.642 INFO [stderr]    --> src/main.rs:106:19
Nov 17 15:55:31.642 INFO [stderr]     |
Nov 17 15:55:31.642 INFO [stderr] 106 | /                   writeln!(
Nov 17 15:55:31.642 INFO [stderr] 107 | |                      &mut out_handle,
Nov 17 15:55:31.642 INFO [stderr] 108 | |                      "Failed to compile, but the compilation error was different than expected:"
Nov 17 15:55:31.642 INFO [stderr] 109 | |                   );
Nov 17 15:55:31.642 INFO [stderr]     | |____________________^
Nov 17 15:55:31.642 INFO [stderr]     |
Nov 17 15:55:31.642 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:31.642 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:31.642 INFO [stderr] 
Nov 17 15:55:31.659 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:31.659 INFO [stderr]    --> src/main.rs:110:19
Nov 17 15:55:31.659 INFO [stderr]     |
Nov 17 15:55:31.659 INFO [stderr] 110 |                   writeln!(&mut out_handle, "```");
Nov 17 15:55:31.659 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:31.659 INFO [stderr]     |
Nov 17 15:55:31.659 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:31.659 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:31.659 INFO [stderr] 
Nov 17 15:55:31.659 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:31.659 INFO [stderr]    --> src/main.rs:112:19
Nov 17 15:55:31.659 INFO [stderr]     |
Nov 17 15:55:31.659 INFO [stderr] 112 |                   writeln!(&mut out_handle, "```");
Nov 17 15:55:31.659 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:31.659 INFO [stderr]     |
Nov 17 15:55:31.659 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:31.659 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:31.659 INFO [stderr] 
Nov 17 15:55:31.659 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:31.659 INFO [stderr]    --> src/main.rs:115:13
Nov 17 15:55:31.659 INFO [stderr]     |
Nov 17 15:55:31.659 INFO [stderr] 115 |             writeln!(&mut out_handle, "--------------------");
Nov 17 15:55:31.659 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:31.659 INFO [stderr]     |
Nov 17 15:55:31.659 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:31.659 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:31.659 INFO [stderr] 
Nov 17 15:55:31.659 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:31.659 INFO [stderr]    --> src/main.rs:128:13
Nov 17 15:55:31.659 INFO [stderr]     |
Nov 17 15:55:31.659 INFO [stderr] 128 |             writeln!(t, "{}", x);
Nov 17 15:55:31.659 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:31.659 INFO [stderr]     |
Nov 17 15:55:31.659 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:31.659 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:31.659 INFO [stderr] 
Nov 17 15:55:31.659 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:31.659 INFO [stderr]    --> src/main.rs:132:13
Nov 17 15:55:31.659 INFO [stderr]     |
Nov 17 15:55:31.659 INFO [stderr] 132 |             writeln!(t, "+{}", x);
Nov 17 15:55:31.659 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:31.659 INFO [stderr]     |
Nov 17 15:55:31.659 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:31.659 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:31.659 INFO [stderr] 
Nov 17 15:55:31.659 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:31.659 INFO [stderr]    --> src/main.rs:136:13
Nov 17 15:55:31.659 INFO [stderr]     |
Nov 17 15:55:31.659 INFO [stderr] 136 |             writeln!(t, "-{}", x);
Nov 17 15:55:31.659 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:31.659 INFO [stderr]     |
Nov 17 15:55:31.659 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:31.659 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:31.659 INFO [stderr] 
Nov 17 15:55:32.714 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.04s
Nov 17 15:55:32.715 INFO [stderr] su: No module specific data is present
Nov 17 15:55:33.020 INFO running `"docker" "inspect" "9af5219c15ed4a3cf780d7f728c53226614a029c88e3a50673a2e887e5dbc71c"`
Nov 17 15:55:33.133 INFO running `"docker" "rm" "-f" "9af5219c15ed4a3cf780d7f728c53226614a029c88e3a50673a2e887e5dbc71c"`
Nov 17 15:55:33.229 INFO [stdout] 9af5219c15ed4a3cf780d7f728c53226614a029c88e3a50673a2e887e5dbc71c
Nov 17 15:55:33.232 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-2/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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"`
Nov 17 15:55:33.434 INFO [stdout] fda009b650fa08488e7ac83c590f7856ba69783b2f516617703009dac23a8e3b
Nov 17 15:55:33.436 INFO running `"docker" "start" "-a" "fda009b650fa08488e7ac83c590f7856ba69783b2f516617703009dac23a8e3b"`
Nov 17 15:55:33.867 INFO [stderr] usermod: no changes
Nov 17 15:55:33.924 INFO [stderr]    Compiling test_runner v0.3.0 (/source)
Nov 17 15:55:35.071 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:35.071 INFO [stderr]   --> src/main.rs:72:13
Nov 17 15:55:35.071 INFO [stderr]    |
Nov 17 15:55:35.071 INFO [stderr] 72 |             write!(&mut out_handle, "{}: ", entry.file_name().unwrap().to_str().unwrap());
Nov 17 15:55:35.071 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:35.071 INFO [stderr]    |
Nov 17 15:55:35.071 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 17 15:55:35.071 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:35.071 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:35.071 INFO [stderr] 
Nov 17 15:55:35.071 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:35.071 INFO [stderr]   --> src/main.rs:74:13
Nov 17 15:55:35.071 INFO [stderr]    |
Nov 17 15:55:35.071 INFO [stderr] 74 |             writeln!(&mut out_handle, "ok");
Nov 17 15:55:35.071 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:35.071 INFO [stderr]    |
Nov 17 15:55:35.071 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:35.071 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:35.071 INFO [stderr] 
Nov 17 15:55:35.071 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:35.071 INFO [stderr]   --> src/main.rs:81:13
Nov 17 15:55:35.071 INFO [stderr]    |
Nov 17 15:55:35.071 INFO [stderr] 81 |             writeln!(&mut out_handle, "--------------------");
Nov 17 15:55:35.071 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:35.071 INFO [stderr]    |
Nov 17 15:55:35.071 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:35.071 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:35.071 INFO [stderr] 
Nov 17 15:55:35.071 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:35.071 INFO [stderr]   --> src/main.rs:82:13
Nov 17 15:55:35.071 INFO [stderr]    |
Nov 17 15:55:35.071 INFO [stderr] 82 |             write!(&mut out_handle, "{}: ", entry.file_name().unwrap().to_str().unwrap());
Nov 17 15:55:35.071 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:35.071 INFO [stderr]    |
Nov 17 15:55:35.071 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:35.071 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:35.071 INFO [stderr] 
Nov 17 15:55:35.071 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:35.071 INFO [stderr]   --> src/main.rs:84:13
Nov 17 15:55:35.071 INFO [stderr]    |
Nov 17 15:55:35.071 INFO [stderr] 84 |             writeln!(&mut out_handle, "FAILED");
Nov 17 15:55:35.071 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:35.071 INFO [stderr]    |
Nov 17 15:55:35.071 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:35.071 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:35.071 INFO [stderr] 
Nov 17 15:55:35.071 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:35.071 INFO [stderr]   --> src/main.rs:88:19
Nov 17 15:55:35.071 INFO [stderr]    |
Nov 17 15:55:35.071 INFO [stderr] 88 |                   writeln!(&mut out_handle, "Compilation was supposed to fail, but it succeeded.");
Nov 17 15:55:35.071 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:35.071 INFO [stderr]    |
Nov 17 15:55:35.071 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:35.071 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:35.071 INFO [stderr] 
Nov 17 15:55:35.071 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:35.071 INFO [stderr]   --> src/main.rs:91:19
Nov 17 15:55:35.071 INFO [stderr]    |
Nov 17 15:55:35.071 INFO [stderr] 91 |                   writeln!(&mut out_handle, "Compilation was supposed to succeed, but it failed:");
Nov 17 15:55:35.071 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:35.071 INFO [stderr]    |
Nov 17 15:55:35.071 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:35.071 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:35.071 INFO [stderr] 
Nov 17 15:55:35.071 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:35.071 INFO [stderr]   --> src/main.rs:92:19
Nov 17 15:55:35.071 INFO [stderr]    |
Nov 17 15:55:35.071 INFO [stderr] 92 |                   writeln!(&mut out_handle, "```");
Nov 17 15:55:35.071 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:35.071 INFO [stderr]    |
Nov 17 15:55:35.072 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:35.072 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:35.072 INFO [stderr] 
Nov 17 15:55:35.072 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:35.072 INFO [stderr]   --> src/main.rs:93:19
Nov 17 15:55:35.072 INFO [stderr]    |
Nov 17 15:55:35.072 INFO [stderr] 93 |                   writeln!(&mut out_handle, "{}", String::from_utf8_lossy(&tc_output.stderr));
Nov 17 15:55:35.072 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:35.072 INFO [stderr]    |
Nov 17 15:55:35.072 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:35.072 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:35.072 INFO [stderr] 
Nov 17 15:55:35.072 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:35.072 INFO [stderr]   --> src/main.rs:94:19
Nov 17 15:55:35.072 INFO [stderr]    |
Nov 17 15:55:35.072 INFO [stderr] 94 |                   writeln!(&mut out_handle, "```");
Nov 17 15:55:35.072 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:35.072 INFO [stderr]    |
Nov 17 15:55:35.072 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:35.072 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:35.072 INFO [stderr] 
Nov 17 15:55:35.072 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:35.072 INFO [stderr]    --> src/main.rs:97:19
Nov 17 15:55:35.072 INFO [stderr]     |
Nov 17 15:55:35.072 INFO [stderr] 97  | /                   writeln!(
Nov 17 15:55:35.072 INFO [stderr] 98  | |                      &mut out_handle,
Nov 17 15:55:35.072 INFO [stderr] 99  | |                      "Compiled OK, but execution of the program produced a different result than expected:"
Nov 17 15:55:35.072 INFO [stderr] 100 | |                   );
Nov 17 15:55:35.072 INFO [stderr]     | |____________________^
Nov 17 15:55:35.072 INFO [stderr]     |
Nov 17 15:55:35.072 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:35.072 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:35.072 INFO [stderr] 
Nov 17 15:55:35.072 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:35.072 INFO [stderr]    --> src/main.rs:101:19
Nov 17 15:55:35.072 INFO [stderr]     |
Nov 17 15:55:35.072 INFO [stderr] 101 |                   writeln!(&mut out_handle, "```");
Nov 17 15:55:35.072 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:35.072 INFO [stderr]     |
Nov 17 15:55:35.072 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:35.072 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:35.072 INFO [stderr] 
Nov 17 15:55:35.072 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:35.072 INFO [stderr]    --> src/main.rs:103:19
Nov 17 15:55:35.072 INFO [stderr]     |
Nov 17 15:55:35.072 INFO [stderr] 103 |                   writeln!(&mut out_handle, "```");
Nov 17 15:55:35.072 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:35.072 INFO [stderr]     |
Nov 17 15:55:35.072 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:35.072 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:35.072 INFO [stderr] 
Nov 17 15:55:35.072 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:35.072 INFO [stderr]    --> src/main.rs:106:19
Nov 17 15:55:35.072 INFO [stderr]     |
Nov 17 15:55:35.072 INFO [stderr] 106 | /                   writeln!(
Nov 17 15:55:35.072 INFO [stderr] 107 | |                      &mut out_handle,
Nov 17 15:55:35.072 INFO [stderr] 108 | |                      "Failed to compile, but the compilation error was different than expected:"
Nov 17 15:55:35.072 INFO [stderr] 109 | |                   );
Nov 17 15:55:35.072 INFO [stderr]     | |____________________^
Nov 17 15:55:35.072 INFO [stderr]     |
Nov 17 15:55:35.072 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:35.072 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:35.072 INFO [stderr] 
Nov 17 15:55:35.072 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:35.072 INFO [stderr]    --> src/main.rs:110:19
Nov 17 15:55:35.072 INFO [stderr]     |
Nov 17 15:55:35.072 INFO [stderr] 110 |                   writeln!(&mut out_handle, "```");
Nov 17 15:55:35.072 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:35.072 INFO [stderr]     |
Nov 17 15:55:35.072 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:35.072 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:35.072 INFO [stderr] 
Nov 17 15:55:35.072 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:35.072 INFO [stderr]    --> src/main.rs:112:19
Nov 17 15:55:35.072 INFO [stderr]     |
Nov 17 15:55:35.072 INFO [stderr] 112 |                   writeln!(&mut out_handle, "```");
Nov 17 15:55:35.072 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:35.072 INFO [stderr]     |
Nov 17 15:55:35.072 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:35.072 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:35.072 INFO [stderr] 
Nov 17 15:55:35.072 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:35.073 INFO [stderr]    --> src/main.rs:115:13
Nov 17 15:55:35.073 INFO [stderr]     |
Nov 17 15:55:35.073 INFO [stderr] 115 |             writeln!(&mut out_handle, "--------------------");
Nov 17 15:55:35.073 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:35.073 INFO [stderr]     |
Nov 17 15:55:35.073 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:35.073 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:35.073 INFO [stderr] 
Nov 17 15:55:35.073 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:35.073 INFO [stderr]    --> src/main.rs:128:13
Nov 17 15:55:35.073 INFO [stderr]     |
Nov 17 15:55:35.073 INFO [stderr] 128 |             writeln!(t, "{}", x);
Nov 17 15:55:35.073 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:35.073 INFO [stderr]     |
Nov 17 15:55:35.073 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:35.073 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:35.073 INFO [stderr] 
Nov 17 15:55:35.073 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:35.073 INFO [stderr]    --> src/main.rs:132:13
Nov 17 15:55:35.073 INFO [stderr]     |
Nov 17 15:55:35.073 INFO [stderr] 132 |             writeln!(t, "+{}", x);
Nov 17 15:55:35.073 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:35.073 INFO [stderr]     |
Nov 17 15:55:35.073 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:35.073 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:35.073 INFO [stderr] 
Nov 17 15:55:35.073 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 15:55:35.073 INFO [stderr]    --> src/main.rs:136:13
Nov 17 15:55:35.073 INFO [stderr]     |
Nov 17 15:55:35.073 INFO [stderr] 136 |             writeln!(t, "-{}", x);
Nov 17 15:55:35.073 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^
Nov 17 15:55:35.073 INFO [stderr]     |
Nov 17 15:55:35.073 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 15:55:35.073 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 17 15:55:35.073 INFO [stderr] 
Nov 17 15:55:35.330 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.44s
Nov 17 15:55:35.340 INFO [stderr] su: No module specific data is present
Nov 17 15:55:35.888 INFO running `"docker" "inspect" "fda009b650fa08488e7ac83c590f7856ba69783b2f516617703009dac23a8e3b"`
Nov 17 15:55:36.004 INFO running `"docker" "rm" "-f" "fda009b650fa08488e7ac83c590f7856ba69783b2f516617703009dac23a8e3b"`
Nov 17 15:55:36.107 INFO [stdout] fda009b650fa08488e7ac83c590f7856ba69783b2f516617703009dac23a8e3b
Nov 17 15:55:36.112 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-2/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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"`
Nov 17 15:55:36.288 INFO [stdout] d727a0767784b3585656058b58fb68b80534bbf811dcbf3221131aa31e07071c
Nov 17 15:55:36.292 INFO running `"docker" "start" "-a" "d727a0767784b3585656058b58fb68b80534bbf811dcbf3221131aa31e07071c"`
Nov 17 15:55:37.239 INFO [stderr] usermod: no changes
Nov 17 15:55:37.290 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
Nov 17 15:55:37.292 INFO [stderr]      Running /target/debug/deps/test_runner-1d5e774f2d32a510
Nov 17 15:55:37.293 INFO [stdout] 
Nov 17 15:55:37.293 INFO [stdout] running 0 tests
Nov 17 15:55:37.293 INFO [stdout] 
Nov 17 15:55:37.293 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 17 15:55:37.293 INFO [stdout] 
Nov 17 15:55:37.295 INFO [stderr] su: No module specific data is present
Nov 17 15:55:37.540 INFO running `"docker" "inspect" "d727a0767784b3585656058b58fb68b80534bbf811dcbf3221131aa31e07071c"`
Nov 17 15:55:37.649 INFO running `"docker" "rm" "-f" "d727a0767784b3585656058b58fb68b80534bbf811dcbf3221131aa31e07071c"`
Nov 17 15:55:37.818 INFO [stdout] d727a0767784b3585656058b58fb68b80534bbf811dcbf3221131aa31e07071c