Dec 18 03:31:51.436 INFO checking balta2ar/brotab against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 03:31:51.436 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/balta2ar/brotab:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 03:31:51.644 INFO [stdout] 06f2a46d9a5a85e14bcd212215712a5c0a1ca24821f0148ee614c1817f2f9cd0
Dec 18 03:31:51.646 INFO running `"docker" "start" "-a" "06f2a46d9a5a85e14bcd212215712a5c0a1ca24821f0148ee614c1817f2f9cd0"`
Dec 18 03:31:52.544 INFO [stderr]     Checking brotab v0.1.0 (/opt/crater/workdir)
Dec 18 03:31:54.008 INFO [stderr] warning: unused import: `std::thread`
Dec 18 03:31:54.008 INFO [stderr]   --> src/main.rs:10:5
Dec 18 03:31:54.008 INFO [stderr]    |
Dec 18 03:31:54.008 INFO [stderr] 10 | use std::thread;
Dec 18 03:31:54.008 INFO [stderr]    |     ^^^^^^^^^^^
Dec 18 03:31:54.008 INFO [stderr]    |
Dec 18 03:31:54.008 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 03:31:54.008 INFO [stderr] 
Dec 18 03:31:54.008 INFO [stderr] warning: unused import: `Arg`
Dec 18 03:31:54.008 INFO [stderr]   --> src/main.rs:16:17
Dec 18 03:31:54.008 INFO [stderr]    |
Dec 18 03:31:54.008 INFO [stderr] 16 | use clap::{App, Arg, SubCommand};
Dec 18 03:31:54.008 INFO [stderr]    |                 ^^^
Dec 18 03:31:54.008 INFO [stderr] 
Dec 18 03:31:54.009 INFO [stderr] warning: unused import: `std::thread`
Dec 18 03:31:54.009 INFO [stderr]   --> src/main.rs:10:5
Dec 18 03:31:54.009 INFO [stderr]    |
Dec 18 03:31:54.010 INFO [stderr] 10 | use std::thread;
Dec 18 03:31:54.010 INFO [stderr]    |     ^^^^^^^^^^^
Dec 18 03:31:54.010 INFO [stderr]    |
Dec 18 03:31:54.010 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 03:31:54.010 INFO [stderr] 
Dec 18 03:31:54.010 INFO [stderr] warning: unused import: `Arg`
Dec 18 03:31:54.010 INFO [stderr]   --> src/main.rs:16:17
Dec 18 03:31:54.010 INFO [stderr]    |
Dec 18 03:31:54.010 INFO [stderr] 16 | use clap::{App, Arg, SubCommand};
Dec 18 03:31:54.010 INFO [stderr]    |                 ^^^
Dec 18 03:31:54.010 INFO [stderr] 
Dec 18 03:31:54.256 INFO [stderr] warning: unused variable: `text`
Dec 18 03:31:54.256 INFO [stderr]   --> src/main.rs:54:24
Dec 18 03:31:54.256 INFO [stderr]    |
Dec 18 03:31:54.256 INFO [stderr] 54 | fn edit_text_in_editor(text: &String) -> Option<String> {
Dec 18 03:31:54.256 INFO [stderr]    |                        ^^^^ help: consider using `_text` instead
Dec 18 03:31:54.256 INFO [stderr]    |
Dec 18 03:31:54.256 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 03:31:54.256 INFO [stderr] 
Dec 18 03:31:54.263 INFO [stderr] warning: unused variable: `text`
Dec 18 03:31:54.263 INFO [stderr]   --> src/main.rs:54:24
Dec 18 03:31:54.263 INFO [stderr]    |
Dec 18 03:31:54.263 INFO [stderr] 54 | fn edit_text_in_editor(text: &String) -> Option<String> {
Dec 18 03:31:54.264 INFO [stderr]    |                        ^^^^ help: consider using `_text` instead
Dec 18 03:31:54.264 INFO [stderr]    |
Dec 18 03:31:54.264 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 03:31:54.264 INFO [stderr] 
Dec 18 03:31:54.360 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:31:54.360 INFO [stderr]   --> src/main.rs:58:5
Dec 18 03:31:54.360 INFO [stderr]    |
Dec 18 03:31:54.360 INFO [stderr] 58 |     write!(tmpfile, "{}", "before");
Dec 18 03:31:54.360 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:31:54.360 INFO [stderr]    |
Dec 18 03:31:54.360 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 03:31:54.360 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:31:54.361 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 18 03:31:54.361 INFO [stderr] 
Dec 18 03:31:54.361 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:31:54.361 INFO [stderr]   --> src/main.rs:67:9
Dec 18 03:31:54.361 INFO [stderr]    |
Dec 18 03:31:54.364 INFO [stderr] 67 |         file.read_to_string(&mut contents);
Dec 18 03:31:54.364 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:31:54.364 INFO [stderr]    |
Dec 18 03:31:54.364 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:31:54.364 INFO [stderr] 
Dec 18 03:31:54.373 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:31:54.373 INFO [stderr]   --> src/main.rs:58:5
Dec 18 03:31:54.374 INFO [stderr]    |
Dec 18 03:31:54.374 INFO [stderr] 58 |     write!(tmpfile, "{}", "before");
Dec 18 03:31:54.374 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:31:54.374 INFO [stderr]    |
Dec 18 03:31:54.375 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 03:31:54.375 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:31:54.375 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 18 03:31:54.375 INFO [stderr] 
Dec 18 03:31:54.375 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:31:54.375 INFO [stderr]   --> src/main.rs:67:9
Dec 18 03:31:54.375 INFO [stderr]    |
Dec 18 03:31:54.375 INFO [stderr] 67 |         file.read_to_string(&mut contents);
Dec 18 03:31:54.375 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:31:54.375 INFO [stderr]    |
Dec 18 03:31:54.375 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:31:54.375 INFO [stderr] 
Dec 18 03:31:54.452 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.16s
Dec 18 03:31:55.164 INFO running `"docker" "inspect" "06f2a46d9a5a85e14bcd212215712a5c0a1ca24821f0148ee614c1817f2f9cd0"`
Dec 18 03:31:55.424 INFO running `"docker" "rm" "-f" "06f2a46d9a5a85e14bcd212215712a5c0a1ca24821f0148ee614c1817f2f9cd0"`
Dec 18 03:31:55.746 INFO [stdout] 06f2a46d9a5a85e14bcd212215712a5c0a1ca24821f0148ee614c1817f2f9cd0