[INFO] crate virtual-dom-rs 0.6.10 is already in cache
[INFO] checking virtual-dom-rs-0.6.10 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate virtual-dom-rs 0.6.10 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate virtual-dom-rs 0.6.10 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate virtual-dom-rs 0.6.10
[INFO] finished tweaking crates.io crate virtual-dom-rs 0.6.10
[INFO] tweaked toml for crates.io crate virtual-dom-rs 0.6.10 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c702470a5be50c0414ed85c156f22031fec154d67578879f0716056117a6d4dc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "c702470a5be50c0414ed85c156f22031fec154d67578879f0716056117a6d4dc"`
[INFO] [stderr]    Compiling wasm-bindgen v0.2.51
[INFO] [stderr]    Compiling html-validation v0.1.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling failure v0.1.6
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling weedle v0.10.0
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.2.50
[INFO] [stderr]     Checking js-sys v0.3.28
[INFO] [stderr]     Checking console_error_panic_hook v0.1.6
[INFO] [stderr]     Checking wasm-bindgen-futures v0.3.27
[INFO] [stderr]     Checking wasm-bindgen-test v0.2.50
[INFO] [stderr]    Compiling wasm-bindgen-webidl v0.2.51
[INFO] [stderr]    Compiling html-macro v0.1.6
[INFO] [stderr]    Compiling web-sys v0.3.28
[INFO] [stderr]     Checking virtual-node v0.2.6
[INFO] [stderr]     Checking virtual-dom-rs v0.6.10 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::cell::Cell`
[INFO] [stderr]  --> tests/events.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::cell::Cell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `wasm_bindgen::prelude::*`
[INFO] [stderr]   --> tests/events.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use wasm_bindgen::prelude::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `wasm_bindgen::JsCast`
[INFO] [stderr]   --> tests/events.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use wasm_bindgen::JsCast;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::hash_map::DefaultHasher`
[INFO] [stderr]   --> tests/dom_updater.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::collections::hash_map::DefaultHasher;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Hash`, `Hasher`
[INFO] [stderr]   --> tests/dom_updater.rs:13:17
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::hash::{Hash, Hasher};
[INFO] [stderr]    |                 ^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `wasm_bindgen::JsCast`
[INFO] [stderr]   --> tests/dom_updater.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | use wasm_bindgen::JsCast;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `text_clone`
[INFO] [stderr]   --> tests/events.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let text_clone = Rc::clone(&text);
[INFO] [stderr]    |         ^^^^^^^^^^ help: consider prefixing with an underscore: `_text_clone`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `MouseEvent`
[INFO] [stderr]   --> tests/create_element.rs:15:44
[INFO] [stderr]    |
[INFO] [stderr] 15 | use web_sys::{Element, Event, EventTarget, MouseEvent};
[INFO] [stderr]    |                                            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> tests/create_element.rs:53:47
[INFO] [stderr]    |
[INFO] [stderr] 53 |     assert!(div.class_list().contains("two"));;
[INFO] [stderr]    |                                               ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolon)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> tests/create_element.rs:54:51
[INFO] [stderr]    |
[INFO] [stderr] 54 |     assert!(div.class_list().contains("classes"));;
[INFO] [stderr]    |                                                   ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `document`
[INFO] [stderr]   --> tests/diff_patch_test_case/mod.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let document = web_sys::window().unwrap().document().unwrap();
[INFO] [stderr]    |             ^^^^^^^^ help: consider prefixing with an underscore: `_document`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `text_clone`
[INFO] [stderr]   --> tests/dom_updater.rs:61:9
[INFO] [stderr]    |
[INFO] [stderr] 61 |     let text_clone = Rc::clone(&text);
[INFO] [stderr]    |         ^^^^^^^^^^ help: consider prefixing with an underscore: `_text_clone`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `text_clone`
[INFO] [stderr]    --> tests/dom_updater.rs:111:9
[INFO] [stderr]     |
[INFO] [stderr] 111 |     let text_clone = Rc::clone(&text);
[INFO] [stderr]     |         ^^^^^^^^^^ help: consider prefixing with an underscore: `_text_clone`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `clicked_clone`
[INFO] [stderr]   --> tests/create_element.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |     let clicked_clone = Rc::clone(&clicked);
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_clicked_clone`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> tests/dom_updater.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 | /     document
[INFO] [stderr] 41 | |         .body()
[INFO] [stderr] 42 | |         .unwrap()
[INFO] [stderr] 43 | |         .append_child(&dom_updater.root_node());
[INFO] [stderr]    | |________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> tests/diff_patch_test_case/mod.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |         virtual_dom_rs::patch(root_node, &patches);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::hash_map::DefaultHasher`
[INFO] [stderr]   --> tests/closures.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::collections::hash_map::DefaultHasher;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `text_clone`
[INFO] [stderr]    --> tests/closures.rs:104:25
[INFO] [stderr]     |
[INFO] [stderr] 104 | fn make_input_component(text_clone: Rc<RefCell<String>>) -> VirtualNode {
[INFO] [stderr]     |                         ^^^^^^^^^^ help: consider prefixing with an underscore: `_text_clone`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `dom_updater` is never read
[INFO] [stderr]   --> tests/closures.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let mut dom_updater = None;
[INFO] [stderr]    |             ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/closures.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |         let mut dom_updater = dom_updater.as_mut().unwrap();
[INFO] [stderr]    |             ----^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.02s
[INFO] running `"docker" "inspect" "c702470a5be50c0414ed85c156f22031fec154d67578879f0716056117a6d4dc"`
[INFO] running `"docker" "rm" "-f" "c702470a5be50c0414ed85c156f22031fec154d67578879f0716056117a6d4dc"`
[INFO] [stdout] c702470a5be50c0414ed85c156f22031fec154d67578879f0716056117a6d4dc