[INFO] fetching crate skima 0.1.0...
[INFO] testing skima-0.1.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate skima 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate skima 0.1.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate skima 0.1.0
[INFO] finished tweaking crates.io crate skima 0.1.0
[INFO] tweaked toml for crates.io crate skima 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded by_address v1.1.0
[INFO] [stderr]   Downloaded no-panic v0.1.28
[INFO] [stderr]   Downloaded observe v1.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 41f48a79cf060a545e0cd5c52ffa542b670a3e2836f66a2053be1be6f9b29123
[INFO] running `Command { std: "docker" "start" "-a" "41f48a79cf060a545e0cd5c52ffa542b670a3e2836f66a2053be1be6f9b29123", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41f48a79cf060a545e0cd5c52ffa542b670a3e2836f66a2053be1be6f9b29123", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41f48a79cf060a545e0cd5c52ffa542b670a3e2836f66a2053be1be6f9b29123", kill_on_drop: false }`
[INFO] [stdout] 41f48a79cf060a545e0cd5c52ffa542b670a3e2836f66a2053be1be6f9b29123
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c3d0542eb3b187898781933f895391635e23d44d00174bb933b0dac5876316c
[INFO] running `Command { std: "docker" "start" "-a" "1c3d0542eb3b187898781933f895391635e23d44d00174bb933b0dac5876316c", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.89
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling bumpalo v3.14.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.89
[INFO] [stderr]    Compiling rustversion v1.0.14
[INFO] [stderr]    Compiling enclose v1.1.8
[INFO] [stderr]    Compiling smallvec v1.11.2
[INFO] [stderr]    Compiling thread_local v1.1.7
[INFO] [stderr]    Compiling sharded-slab v0.1.7
[INFO] [stderr]    Compiling downcast-rs v1.2.0
[INFO] [stderr]    Compiling by_address v1.1.0
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling tracing-subscriber v0.3.18
[INFO] [stderr]    Compiling castaway v0.2.2
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.89
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling no-panic v0.1.28
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.89
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.89
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling observe v1.2.0
[INFO] [stderr]    Compiling js-sys v0.3.66
[INFO] [stderr]    Compiling console_error_panic_hook v0.1.7
[INFO] [stderr]    Compiling tracing-wasm v0.2.1
[INFO] [stderr]    Compiling web-sys v0.3.66
[INFO] [stderr]    Compiling skima v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(associated_type_defaults)]
[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:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(type_alias_impl_trait)]
[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:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(arbitrary_self_types)]
[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:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(core_intrinsics)]
[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:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(decl_macro)]
[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:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(unboxed_closures)]
[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:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(fn_traits)]
[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:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![feature(tuple_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tracing::dispatcher`
[INFO] [stdout]   --> src/tree.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use tracing::dispatcher;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::action::Action`
[INFO] [stdout]   --> src/tree.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::action::Action;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::tree::Tree`
[INFO] [stdout]  --> src/web/api.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::tree::Tree;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `WebSys`
[INFO] [stdout]  --> src/web/api.rs:9:69
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::web::{attr, classname, Backend, Counter, Markup, Target, WebSys};
[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:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(core_intrinsics)]
[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:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(fn_traits)]
[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:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![feature(tuple_trait)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cx`
[INFO] [stdout]   --> src/web/mod.rs:86:41
[INFO] [stdout]    |
[INFO] [stdout] 86 |             cx.effect_hash_clean(&evenodd, move |cx| {
[INFO] [stdout]    |                                                  ^^ help: if this is intentional, prefix it with an underscore: `_cx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cx`
[INFO] [stdout]   --> src/web/mod.rs:88:11
[INFO] [stdout]    |
[INFO] [stdout] 88 |                 move |cx| {
[INFO] [stdout]    |                       ^^ help: if this is intentional, prefix it with an underscore: `_cx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cx`
[INFO] [stdout]    --> src/web/mod.rs:202:31
[INFO] [stdout]     |
[INFO] [stdout] 202 |         cx.effect_hash_clean(text, |cx| {
[INFO] [stdout]     |                                     ^^ help: if this is intentional, prefix it with an underscore: `_cx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cx`
[INFO] [stdout]    --> src/web/mod.rs:204:5
[INFO] [stdout]     |
[INFO] [stdout] 204 |             |cx| {
[INFO] [stdout]     |              ^^ help: if this is intentional, prefix it with an underscore: `_cx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `items`
[INFO] [stdout]   --> src/web/api.rs:28:2
[INFO] [stdout]    |
[INFO] [stdout] 28 |     items: L,
[INFO] [stdout]    |     ^^^^^ help: if this is intentional, prefix it with an underscore: `_items`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/web/api.rs:29:2
[INFO] [stdout]    |
[INFO] [stdout] 29 |     f: F,
[INFO] [stdout]    |     ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/web/api.rs:35:26
[INFO] [stdout]    |
[INFO] [stdout] 35 |     div(list(items.iter(), |item| {}))
[INFO] [stdout]    |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `func`
[INFO] [stdout]   --> src/web/api.rs:66:62
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn memo<F: Fn(Context<M, B>) -> M, M: Markup<B>, B: Backend>(func: F) -> impl Markup<B> {
[INFO] [stdout]    |                                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_func`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `active`
[INFO] [stdout]   --> src/web/api.rs:76:7
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let active: &Counter = cx.get();
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_active`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cx`
[INFO] [stdout]   --> src/web/api.rs:96:17
[INFO] [stdout]    |
[INFO] [stdout] 96 |     reactive(move |cx| {
[INFO] [stdout]    |                    ^^ help: if this is intentional, prefix it with an underscore: `_cx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `click`
[INFO] [stdout]    --> src/web/api.rs:103:17
[INFO] [stdout]     |
[INFO] [stdout] 103 |             on("click", |click| {}),
[INFO] [stdout]     |                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_click`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/web/api.rs:125:15
[INFO] [stdout]     |
[INFO] [stdout] 125 | fn button<'a>(name: &'a str) -> impl Markup + 'a {
[INFO] [stdout]     |               ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cx`
[INFO] [stdout]    --> src/web/api.rs:126:12
[INFO] [stdout]     |
[INFO] [stdout] 126 |     reactive(|cx| div(()))
[INFO] [stdout]     |               ^^ help: if this is intentional, prefix it with an underscore: `_cx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 11 previous errors; 17 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 `skima` (lib) due to 12 previous errors; 17 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "1c3d0542eb3b187898781933f895391635e23d44d00174bb933b0dac5876316c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c3d0542eb3b187898781933f895391635e23d44d00174bb933b0dac5876316c", kill_on_drop: false }`
[INFO] [stdout] 1c3d0542eb3b187898781933f895391635e23d44d00174bb933b0dac5876316c
