[INFO] fetching crate virtual-dom-rs 0.6.14...
[INFO] testing virtual-dom-rs-0.6.14 against 1.49.0 for beta-1.50-1
[INFO] extracting crate virtual-dom-rs 0.6.14 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate virtual-dom-rs 0.6.14 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate virtual-dom-rs 0.6.14
[INFO] finished tweaking crates.io crate virtual-dom-rs 0.6.14
[INFO] tweaked toml for crates.io crate virtual-dom-rs 0.6.14 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 05118a7b5fec89ff49f66f5229656c65f82042b81e949e645b5a037ed0d854dd
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "05118a7b5fec89ff49f66f5229656c65f82042b81e949e645b5a037ed0d854dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05118a7b5fec89ff49f66f5229656c65f82042b81e949e645b5a037ed0d854dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05118a7b5fec89ff49f66f5229656c65f82042b81e949e645b5a037ed0d854dd", kill_on_drop: false }`
[INFO] [stdout] 05118a7b5fec89ff49f66f5229656c65f82042b81e949e645b5a037ed0d854dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0251fa0321b8f52aa79e5c3b393e4337f25194f6d023d0faa7080fce157f983
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a0251fa0321b8f52aa79e5c3b393e4337f25194f6d023d0faa7080fce157f983", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling html-validation v0.1.2
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.69
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.69
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.69
[INFO] [stderr]    Compiling wasm-bindgen v0.2.69
[INFO] [stderr]    Compiling js-sys v0.3.46
[INFO] [stderr]    Compiling html-macro v0.1.9
[INFO] [stderr]    Compiling web-sys v0.3.46
[INFO] [stderr]    Compiling virtual-node v0.2.7
[INFO] [stderr]    Compiling virtual-dom-rs v0.6.14 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.76s
[INFO] running `Command { std: "docker" "inspect" "a0251fa0321b8f52aa79e5c3b393e4337f25194f6d023d0faa7080fce157f983", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0251fa0321b8f52aa79e5c3b393e4337f25194f6d023d0faa7080fce157f983", kill_on_drop: false }`
[INFO] [stdout] a0251fa0321b8f52aa79e5c3b393e4337f25194f6d023d0faa7080fce157f983
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 88eb82c4c8864901e4c490ff6f529f845a3a07aa1197ace3a2e20e77c5cc164e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "88eb82c4c8864901e4c490ff6f529f845a3a07aa1197ace3a2e20e77c5cc164e", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.2.50
[INFO] [stderr]    Compiling console_error_panic_hook v0.1.6
[INFO] [stderr]    Compiling wasm-bindgen-futures v0.3.27
[INFO] [stderr]    Compiling wasm-bindgen-test v0.2.50
[INFO] [stderr]    Compiling virtual-dom-rs v0.6.14 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> tests/events.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::Cell`
[INFO] [stdout]  --> tests/events.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::cell::Cell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `wasm_bindgen::prelude::*`
[INFO] [stdout]   --> tests/events.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use wasm_bindgen::prelude::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: new is not a valid HTML tag.
[INFO] [stdout]                 
[INFO] [stdout] If you are trying to use a valid HTML tag, perhaps there's a typo?
[INFO] [stdout]                 
[INFO] [stdout] If you are trying to use a custom component, please capitalize the component name.
[INFO] [stdout]                 
[INFO] [stdout] custom components: https://chinedufn.github.io/percy/html-macro/custom-components/index.html
[INFO] [stdout]    --> src/diff/mod.rs:198:41
[INFO] [stdout]     |
[INFO] [stdout] 198 |             new: html! { <div> <b></b> <new></new> </div> },
[INFO] [stdout]     |                                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `wasm_bindgen::JsCast`
[INFO] [stdout]   --> tests/events.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use wasm_bindgen::JsCast;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: new is not a valid HTML tag.
[INFO] [stdout]                 
[INFO] [stdout] If you are trying to use a valid HTML tag, perhaps there's a typo?
[INFO] [stdout]                 
[INFO] [stdout] If you are trying to use a custom component, please capitalize the component name.
[INFO] [stdout]                 
[INFO] [stdout] custom components: https://chinedufn.github.io/percy/html-macro/custom-components/index.html
[INFO] [stdout]    --> src/diff/mod.rs:199:68
[INFO] [stdout]     |
[INFO] [stdout] 199 |             expected: vec![Patch::AppendChildren(0, vec![&html! { <new></new> }])],
[INFO] [stdout]     |                                                                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> tests/create_element.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:8:19
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![cfg_attr(test, feature(proc_macro_hygiene))]
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MouseEvent`
[INFO] [stdout]   --> tests/create_element.rs:15:44
[INFO] [stdout]    |
[INFO] [stdout] 15 | use web_sys::{Element, Event, EventTarget, MouseEvent};
[INFO] [stdout]    |                                            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> tests/create_element.rs:53:47
[INFO] [stdout]    |
[INFO] [stdout] 53 |     assert!(div.class_list().contains("two"));;
[INFO] [stdout]    |                                               ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> tests/create_element.rs:54:51
[INFO] [stdout]    |
[INFO] [stdout] 54 |     assert!(div.class_list().contains("classes"));;
[INFO] [stdout]    |                                                   ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `virtual-dom-rs`
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> tests/dom_updater.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::hash_map::DefaultHasher`
[INFO] [stdout]   --> tests/dom_updater.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::collections::hash_map::DefaultHasher;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Hash`, `Hasher`
[INFO] [stdout]   --> tests/dom_updater.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::hash::{Hash, Hasher};
[INFO] [stdout]    |                 ^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `wasm_bindgen::JsCast`
[INFO] [stdout]   --> tests/dom_updater.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use wasm_bindgen::JsCast;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> tests/closures.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::hash_map::DefaultHasher`
[INFO] [stdout]   --> tests/closures.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::collections::hash_map::DefaultHasher;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> tests/diff_patch.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "88eb82c4c8864901e4c490ff6f529f845a3a07aa1197ace3a2e20e77c5cc164e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88eb82c4c8864901e4c490ff6f529f845a3a07aa1197ace3a2e20e77c5cc164e", kill_on_drop: false }`
[INFO] [stdout] 88eb82c4c8864901e4c490ff6f529f845a3a07aa1197ace3a2e20e77c5cc164e