Dec 12 03:55:38.965 INFO checking AnthonyP4312/i3-alt-tab against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 03:55:38.965 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-1/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-alt check --frozen --all --all-targets" "-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 12 03:55:39.441 INFO [stdout] dc4bfdcb4c6a6f8d076ec265fcf0380f305bd971c727a4580416fe262fc1b5d7
Dec 12 03:55:39.446 INFO running `"docker" "start" "-a" "dc4bfdcb4c6a6f8d076ec265fcf0380f305bd971c727a4580416fe262fc1b5d7"`
Dec 12 03:55:40.404 INFO [stderr] usermod: no changes
Dec 12 03:55:40.528 INFO [stderr]     Checking alt_tabber v0.1.0 (/source)
Dec 12 03:55:45.632 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 03:55:45.632 INFO [stderr]   --> src/main.rs:39:5
Dec 12 03:55:45.632 INFO [stderr]    |
Dec 12 03:55:45.632 INFO [stderr] 39 | /     Command::new("i3-msg")
Dec 12 03:55:45.632 INFO [stderr] 40 | |         .arg(format!("[con_id={}] focus", next.id))
Dec 12 03:55:45.632 INFO [stderr] 41 | |         .output();
Dec 12 03:55:45.632 INFO [stderr]    | |__________________^
Dec 12 03:55:45.632 INFO [stderr]    |
Dec 12 03:55:45.632 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 03:55:45.632 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 03:55:45.632 INFO [stderr] 
Dec 12 03:55:45.696 INFO [stderr] warning: unused variable: `child_c`
Dec 12 03:55:45.696 INFO [stderr]   --> src/main.rs:85:13
Dec 12 03:55:45.696 INFO [stderr]    |
Dec 12 03:55:45.696 INFO [stderr] 85 |         let child_c = Node {
Dec 12 03:55:45.696 INFO [stderr]    |             ^^^^^^^ help: consider using `_child_c` instead
Dec 12 03:55:45.696 INFO [stderr]    |
Dec 12 03:55:45.696 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 03:55:45.696 INFO [stderr] 
Dec 12 03:55:45.696 INFO [stderr] warning: unused variable: `node_with_children`
Dec 12 03:55:45.696 INFO [stderr]   --> src/main.rs:89:13
Dec 12 03:55:45.696 INFO [stderr]    |
Dec 12 03:55:45.696 INFO [stderr] 89 |         let node_with_children = Node {
Dec 12 03:55:45.696 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: consider using `_node_with_children` instead
Dec 12 03:55:45.696 INFO [stderr] 
Dec 12 03:55:45.716 INFO [stderr] warning: function is never used: `setup`
Dec 12 03:55:45.716 INFO [stderr]   --> src/main.rs:67:5
Dec 12 03:55:45.716 INFO [stderr]    |
Dec 12 03:55:45.716 INFO [stderr] 67 |     fn setup() {
Dec 12 03:55:45.716 INFO [stderr]    |     ^^^^^^^^^^
Dec 12 03:55:45.716 INFO [stderr]    |
Dec 12 03:55:45.716 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 03:55:45.716 INFO [stderr] 
Dec 12 03:55:45.716 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 03:55:45.716 INFO [stderr]   --> src/main.rs:39:5
Dec 12 03:55:45.716 INFO [stderr]    |
Dec 12 03:55:45.716 INFO [stderr] 39 | /     Command::new("i3-msg")
Dec 12 03:55:45.716 INFO [stderr] 40 | |         .arg(format!("[con_id={}] focus", next.id))
Dec 12 03:55:45.716 INFO [stderr] 41 | |         .output();
Dec 12 03:55:45.716 INFO [stderr]    | |__________________^
Dec 12 03:55:45.716 INFO [stderr]    |
Dec 12 03:55:45.716 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 03:55:45.716 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 03:55:45.716 INFO [stderr] 
Dec 12 03:55:45.724 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.29s
Dec 12 03:55:45.726 INFO [stderr] su: No module specific data is present
Dec 12 03:55:46.088 INFO running `"docker" "inspect" "dc4bfdcb4c6a6f8d076ec265fcf0380f305bd971c727a4580416fe262fc1b5d7"`
Dec 12 03:55:46.299 INFO running `"docker" "rm" "-f" "dc4bfdcb4c6a6f8d076ec265fcf0380f305bd971c727a4580416fe262fc1b5d7"`
Dec 12 03:55:46.438 INFO [stdout] dc4bfdcb4c6a6f8d076ec265fcf0380f305bd971c727a4580416fe262fc1b5d7