Nov 28 09:13:14.342 INFO checking ashishnegi/learn-rust against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074 Nov 28 09:13:14.342 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-4/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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"` Nov 28 09:13:14.786 INFO [stdout] ab0cf6282fba4f03ec67812950d9dc1deaaae2e96bfa6526995634b613926957 Nov 28 09:13:14.789 INFO running `"docker" "start" "-a" "ab0cf6282fba4f03ec67812950d9dc1deaaae2e96bfa6526995634b613926957"` Nov 28 09:13:16.565 INFO [stderr] usermod: no changes Nov 28 09:13:16.634 INFO [stderr] Checking learnrust v0.1.0 (/source) Nov 28 09:13:17.539 INFO [stderr] warning: struct is never constructed: `Rectangle` Nov 28 09:13:17.540 INFO [stderr] --> src/area.rs:2:1 Nov 28 09:13:17.541 INFO [stderr] | Nov 28 09:13:17.541 INFO [stderr] 2 | struct Rectangle { Nov 28 09:13:17.541 INFO [stderr] | ^^^^^^^^^^^^^^^^ Nov 28 09:13:17.541 INFO [stderr] | Nov 28 09:13:17.541 INFO [stderr] = note: #[warn(dead_code)] on by default Nov 28 09:13:17.541 INFO [stderr] Nov 28 09:13:17.541 INFO [stderr] warning: method is never used: `area` Nov 28 09:13:17.541 INFO [stderr] --> src/area.rs:8:5 Nov 28 09:13:17.541 INFO [stderr] | Nov 28 09:13:17.541 INFO [stderr] 8 | fn area(&self) -> u32 { Nov 28 09:13:17.541 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^ Nov 28 09:13:17.541 INFO [stderr] Nov 28 09:13:17.544 INFO [stderr] warning: struct is never constructed: `Square` Nov 28 09:13:17.544 INFO [stderr] --> src/area.rs:13:1 Nov 28 09:13:17.544 INFO [stderr] | Nov 28 09:13:17.544 INFO [stderr] 13 | struct Square { Nov 28 09:13:17.545 INFO [stderr] | ^^^^^^^^^^^^^ Nov 28 09:13:17.545 INFO [stderr] Nov 28 09:13:17.545 INFO [stderr] warning: method is never used: `area` Nov 28 09:13:17.545 INFO [stderr] --> src/area.rs:18:5 Nov 28 09:13:17.545 INFO [stderr] | Nov 28 09:13:17.545 INFO [stderr] 18 | fn area(&self) -> u32 { Nov 28 09:13:17.546 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^ Nov 28 09:13:17.546 INFO [stderr] Nov 28 09:13:17.546 INFO [stderr] warning: function is never used: `plus_one` Nov 28 09:13:17.546 INFO [stderr] --> src/maybe.rs:15:1 Nov 28 09:13:17.546 INFO [stderr] | Nov 28 09:13:17.546 INFO [stderr] 15 | fn plus_one(there: Option) -> Option { Nov 28 09:13:17.547 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 28 09:13:17.547 INFO [stderr] Nov 28 09:13:17.547 INFO [stderr] warning: function is never used: `merge_sort` Nov 28 09:13:17.547 INFO [stderr] --> src/collection.rs:2:1 Nov 28 09:13:17.547 INFO [stderr] | Nov 28 09:13:17.547 INFO [stderr] 2 | fn merge_sort(arr: & mut[u32], start: usize, end: usize) { Nov 28 09:13:17.547 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 28 09:13:17.548 INFO [stderr] Nov 28 09:13:17.548 INFO [stderr] warning: enum is never used: `TeaError` Nov 28 09:13:17.548 INFO [stderr] --> src/errors.rs:1:1 Nov 28 09:13:17.548 INFO [stderr] | Nov 28 09:13:17.548 INFO [stderr] 1 | enum TeaError { Nov 28 09:13:17.548 INFO [stderr] | ^^^^^^^^^^^^^ Nov 28 09:13:17.548 INFO [stderr] Nov 28 09:13:17.549 INFO [stderr] warning: function is never used: `append` Nov 28 09:13:17.549 INFO [stderr] --> src/errors.rs:9:1 Nov 28 09:13:17.549 INFO [stderr] | Nov 28 09:13:17.549 INFO [stderr] 9 | fn append(s1: String, s2: String) -> String { Nov 28 09:13:17.549 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 28 09:13:17.549 INFO [stderr] Nov 28 09:13:17.549 INFO [stderr] warning: function is never used: `get_milk_from_cow` Nov 28 09:13:17.549 INFO [stderr] --> src/errors.rs:13:1 Nov 28 09:13:17.550 INFO [stderr] | Nov 28 09:13:17.550 INFO [stderr] 13 | fn get_milk_from_cow(cow: bool) -> Result { Nov 28 09:13:17.550 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 28 09:13:17.550 INFO [stderr] Nov 28 09:13:17.550 INFO [stderr] warning: function is never used: `pour_milk` Nov 28 09:13:17.551 INFO [stderr] --> src/errors.rs:21:1 Nov 28 09:13:17.551 INFO [stderr] | Nov 28 09:13:17.551 INFO [stderr] 21 | fn pour_milk(milk: bool) -> Result { Nov 28 09:13:17.552 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 28 09:13:17.552 INFO [stderr] Nov 28 09:13:17.552 INFO [stderr] warning: function is never used: `make_tea` Nov 28 09:13:17.552 INFO [stderr] --> src/errors.rs:29:1 Nov 28 09:13:17.553 INFO [stderr] | Nov 28 09:13:17.553 INFO [stderr] 29 | fn make_tea() -> Result { Nov 28 09:13:17.553 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 28 09:13:17.553 INFO [stderr] Nov 28 09:13:17.554 INFO [stderr] warning: function is never used: `largest` Nov 28 09:13:17.554 INFO [stderr] --> src/traits.rs:1:1 Nov 28 09:13:17.554 INFO [stderr] | Nov 28 09:13:17.554 INFO [stderr] 1 | fn largest(ts: &[T]) -> &T { Nov 28 09:13:17.555 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 28 09:13:17.555 INFO [stderr] Nov 28 09:13:17.555 INFO [stderr] warning: struct is never constructed: `Human` Nov 28 09:13:17.555 INFO [stderr] --> src/traits.rs:17:1 Nov 28 09:13:17.556 INFO [stderr] | Nov 28 09:13:17.556 INFO [stderr] 17 | struct Human {} Nov 28 09:13:17.556 INFO [stderr] | ^^^^^^^^^^^^ Nov 28 09:13:17.556 INFO [stderr] Nov 28 09:13:17.557 INFO [stderr] warning: struct is never constructed: `Cat` Nov 28 09:13:17.557 INFO [stderr] --> src/traits.rs:18:1 Nov 28 09:13:17.557 INFO [stderr] | Nov 28 09:13:17.557 INFO [stderr] 18 | struct Cat {} Nov 28 09:13:17.558 INFO [stderr] | ^^^^^^^^^^ Nov 28 09:13:17.558 INFO [stderr] Nov 28 09:13:17.558 INFO [stderr] warning: struct is never constructed: `Res` Nov 28 09:13:17.558 INFO [stderr] --> src/grep.rs:5:1 Nov 28 09:13:17.559 INFO [stderr] | Nov 28 09:13:17.559 INFO [stderr] 5 | struct Res { Nov 28 09:13:17.559 INFO [stderr] | ^^^^^^^^^^ Nov 28 09:13:17.559 INFO [stderr] Nov 28 09:13:17.560 INFO [stderr] warning: function is never used: `search_contents` Nov 28 09:13:17.560 INFO [stderr] --> src/grep.rs:10:1 Nov 28 09:13:17.560 INFO [stderr] | Nov 28 09:13:17.560 INFO [stderr] 10 | fn search_contents(contents: &str, search: &str) -> Vec { Nov 28 09:13:17.561 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 28 09:13:17.561 INFO [stderr] Nov 28 09:13:17.561 INFO [stderr] warning: function is never used: `grep` Nov 28 09:13:17.561 INFO [stderr] --> src/grep.rs:25:1 Nov 28 09:13:17.562 INFO [stderr] | Nov 28 09:13:17.562 INFO [stderr] 25 | fn grep(filename: &str, search: &str) -> Result, Error> { Nov 28 09:13:17.562 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 28 09:13:17.562 INFO [stderr] Nov 28 09:13:17.563 INFO [stderr] warning: function is never used: `add_one` Nov 28 09:13:17.563 INFO [stderr] --> src/closures.rs:1:1 Nov 28 09:13:17.563 INFO [stderr] | Nov 28 09:13:17.563 INFO [stderr] 1 | / fn add_one(closure: F, y: u32) -> u32 Nov 28 09:13:17.564 INFO [stderr] 2 | | where F: Fn(u32) -> u32 Nov 28 09:13:17.564 INFO [stderr] 3 | | { Nov 28 09:13:17.564 INFO [stderr] 4 | | closure(y) + 1 Nov 28 09:13:17.564 INFO [stderr] 5 | | } Nov 28 09:13:17.565 INFO [stderr] | |_^ Nov 28 09:13:17.565 INFO [stderr] Nov 28 09:13:17.565 INFO [stderr] warning: function is never used: `add` Nov 28 09:13:17.565 INFO [stderr] --> src/closures.rs:7:1 Nov 28 09:13:17.566 INFO [stderr] | Nov 28 09:13:17.566 INFO [stderr] 7 | fn add(x: u32, y: u32) -> u32 { Nov 28 09:13:17.566 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 28 09:13:17.566 INFO [stderr] Nov 28 09:13:17.567 INFO [stderr] warning: struct is never constructed: `Even` Nov 28 09:13:17.567 INFO [stderr] --> src/closures.rs:17:1 Nov 28 09:13:17.567 INFO [stderr] | Nov 28 09:13:17.567 INFO [stderr] 17 | struct Even { Nov 28 09:13:17.568 INFO [stderr] | ^^^^^^^^^^^ Nov 28 09:13:17.568 INFO [stderr] Nov 28 09:13:17.568 INFO [stderr] warning: struct is never constructed: `Node` Nov 28 09:13:17.569 INFO [stderr] --> src/tree.rs:5:1 Nov 28 09:13:17.569 INFO [stderr] | Nov 28 09:13:17.569 INFO [stderr] 5 | struct Node { Nov 28 09:13:17.569 INFO [stderr] | ^^^^^^^^^^^ Nov 28 09:13:17.570 INFO [stderr] Nov 28 09:13:17.570 INFO [stderr] warning: function is never used: `make_tree` Nov 28 09:13:17.570 INFO [stderr] --> src/tree.rs:11:1 Nov 28 09:13:17.571 INFO [stderr] | Nov 28 09:13:17.571 INFO [stderr] 11 | fn make_tree() { Nov 28 09:13:17.571 INFO [stderr] | ^^^^^^^^^^^^^^ Nov 28 09:13:17.571 INFO [stderr] Nov 28 09:13:17.572 INFO [stderr] warning: function is never used: `thread1` Nov 28 09:13:17.578 INFO [stderr] --> src/threads.rs:5:1 Nov 28 09:13:17.578 INFO [stderr] | Nov 28 09:13:17.579 INFO [stderr] 5 | fn thread1() { Nov 28 09:13:17.579 INFO [stderr] | ^^^^^^^^^^^^ Nov 28 09:13:17.579 INFO [stderr] Nov 28 09:13:17.579 INFO [stderr] warning: function is never used: `channels` Nov 28 09:13:17.580 INFO [stderr] --> src/threads.rs:17:1 Nov 28 09:13:17.580 INFO [stderr] | Nov 28 09:13:17.580 INFO [stderr] 17 | fn channels() { Nov 28 09:13:17.580 INFO [stderr] | ^^^^^^^^^^^^^ Nov 28 09:13:17.581 INFO [stderr] Nov 28 09:13:17.581 INFO [stderr] warning: struct is never constructed: `Post` Nov 28 09:13:17.581 INFO [stderr] --> src/posts.rs:1:1 Nov 28 09:13:17.581 INFO [stderr] | Nov 28 09:13:17.581 INFO [stderr] 1 | struct Post { Nov 28 09:13:17.582 INFO [stderr] | ^^^^^^^^^^^ Nov 28 09:13:17.582 INFO [stderr] Nov 28 09:13:17.582 INFO [stderr] warning: struct is never constructed: `DraftPost` Nov 28 09:13:17.582 INFO [stderr] --> src/posts.rs:5:1 Nov 28 09:13:17.583 INFO [stderr] | Nov 28 09:13:17.583 INFO [stderr] 5 | struct DraftPost { Nov 28 09:13:17.583 INFO [stderr] | ^^^^^^^^^^^^^^^^ Nov 28 09:13:17.583 INFO [stderr] Nov 28 09:13:17.584 INFO [stderr] warning: struct is never constructed: `PendingPost` Nov 28 09:13:17.584 INFO [stderr] --> src/posts.rs:9:1 Nov 28 09:13:17.584 INFO [stderr] | Nov 28 09:13:17.584 INFO [stderr] 9 | struct PendingPost { Nov 28 09:13:17.585 INFO [stderr] | ^^^^^^^^^^^^^^^^^^ Nov 28 09:13:17.585 INFO [stderr] Nov 28 09:13:17.585 INFO [stderr] warning: method is never used: `new` Nov 28 09:13:17.585 INFO [stderr] --> src/posts.rs:16:5 Nov 28 09:13:17.586 INFO [stderr] | Nov 28 09:13:17.586 INFO [stderr] 16 | fn new() -> DraftPost { Nov 28 09:13:17.586 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^ Nov 28 09:13:17.586 INFO [stderr] Nov 28 09:13:17.587 INFO [stderr] warning: method is never used: `content` Nov 28 09:13:17.587 INFO [stderr] --> src/posts.rs:20:5 Nov 28 09:13:17.587 INFO [stderr] | Nov 28 09:13:17.587 INFO [stderr] 20 | fn content(&self) -> &str { Nov 28 09:13:17.588 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 28 09:13:17.588 INFO [stderr] Nov 28 09:13:17.588 INFO [stderr] warning: method is never used: `req_review` Nov 28 09:13:17.588 INFO [stderr] --> src/posts.rs:26:5 Nov 28 09:13:17.589 INFO [stderr] | Nov 28 09:13:17.589 INFO [stderr] 26 | fn req_review(self) -> PendingPost { Nov 28 09:13:17.589 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 28 09:13:17.589 INFO [stderr] Nov 28 09:13:17.589 INFO [stderr] warning: method is never used: `add_text` Nov 28 09:13:17.590 INFO [stderr] --> src/posts.rs:33:5 Nov 28 09:13:17.590 INFO [stderr] | Nov 28 09:13:17.590 INFO [stderr] 33 | fn add_text(&mut self, content: &str) { Nov 28 09:13:17.590 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 28 09:13:17.591 INFO [stderr] Nov 28 09:13:17.591 INFO [stderr] warning: enum is never used: `PublishResult` Nov 28 09:13:17.591 INFO [stderr] --> src/posts.rs:38:1 Nov 28 09:13:17.591 INFO [stderr] | Nov 28 09:13:17.592 INFO [stderr] 38 | enum PublishResult { Nov 28 09:13:17.592 INFO [stderr] | ^^^^^^^^^^^^^^^^^^ Nov 28 09:13:17.592 INFO [stderr] Nov 28 09:13:17.593 INFO [stderr] warning: method is never used: `approve` Nov 28 09:13:17.593 INFO [stderr] --> src/posts.rs:44:5 Nov 28 09:13:17.593 INFO [stderr] | Nov 28 09:13:17.593 INFO [stderr] 44 | fn approve(&mut self) { Nov 28 09:13:17.594 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^ Nov 28 09:13:17.594 INFO [stderr] Nov 28 09:13:17.594 INFO [stderr] warning: method is never used: `reject` Nov 28 09:13:17.594 INFO [stderr] --> src/posts.rs:47:5 Nov 28 09:13:17.595 INFO [stderr] | Nov 28 09:13:17.595 INFO [stderr] 47 | fn reject(self) -> DraftPost { Nov 28 09:13:17.595 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 28 09:13:17.596 INFO [stderr] Nov 28 09:13:17.596 INFO [stderr] warning: method is never used: `publish` Nov 28 09:13:17.596 INFO [stderr] --> src/posts.rs:50:5 Nov 28 09:13:17.596 INFO [stderr] | Nov 28 09:13:17.597 INFO [stderr] 50 | fn publish(self) -> PublishResult { Nov 28 09:13:17.597 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Nov 28 09:13:17.597 INFO [stderr] Nov 28 09:13:18.139 INFO [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.54s Nov 28 09:13:18.144 INFO [stderr] su: No module specific data is present Nov 28 09:13:19.000 INFO running `"docker" "inspect" "ab0cf6282fba4f03ec67812950d9dc1deaaae2e96bfa6526995634b613926957"` Nov 28 09:13:19.252 INFO running `"docker" "rm" "-f" "ab0cf6282fba4f03ec67812950d9dc1deaaae2e96bfa6526995634b613926957"` Nov 28 09:13:19.641 INFO [stdout] ab0cf6282fba4f03ec67812950d9dc1deaaae2e96bfa6526995634b613926957