[INFO] fetching crate avalanche 0.1.0...
[INFO] checking avalanche-0.1.0 against try#23ffd2897cbb44320ca18dfe4d05dbacb37d55e0 for pr-115950
[INFO] extracting crate avalanche 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate avalanche 0.1.0 on toolchain 23ffd2897cbb44320ca18dfe4d05dbacb37d55e0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate avalanche 0.1.0
[INFO] finished tweaking crates.io crate avalanche 0.1.0
[INFO] tweaked toml for crates.io crate avalanche 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "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" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3268b2c268c6041f762104468b299509db41c64e92659d9e8154e4c1e4e7bb3c
[INFO] running `Command { std: "docker" "start" "-a" "3268b2c268c6041f762104468b299509db41c64e92659d9e8154e4c1e4e7bb3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3268b2c268c6041f762104468b299509db41c64e92659d9e8154e4c1e4e7bb3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3268b2c268c6041f762104468b299509db41c64e92659d9e8154e4c1e4e7bb3c", kill_on_drop: false }`
[INFO] [stdout] 3268b2c268c6041f762104468b299509db41c64e92659d9e8154e4c1e4e7bb3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 607dddd82cb18c156e565a8841cfa0851bff01fa6d30f700b82fe5225b5d4eff
[INFO] running `Command { std: "docker" "start" "-a" "607dddd82cb18c156e565a8841cfa0851bff01fa6d30f700b82fe5225b5d4eff", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.87
[INFO] [stderr]    Compiling libc v0.2.148
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling bumpalo v3.14.0
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling wasm-bindgen v0.2.87
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]    Compiling syn v2.0.37
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.87
[INFO] [stderr]    Compiling avalanche-macro v0.1.0
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.87
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.87
[INFO] [stderr]     Checking avalanche v0.1.0
[INFO] [stderr]     Checking avalanche v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0502]: cannot borrow `*tree` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/vdom.rs:522:17
[INFO] [stdout]     |
[INFO] [stdout] 519 |       for (child, child_vnode) in children.into_iter().zip(node.iter_mut(tree)).rev() {
[INFO] [stdout]     |                                   ---------------------------------------------------
[INFO] [stdout]     |                                   |                                      |
[INFO] [stdout]     |                                   |                                      immutable borrow occurs here
[INFO] [stdout]     |                                   immutable borrow later used here
[INFO] [stdout] ...
[INFO] [stdout] 522 | /                 native_update_vnode(
[INFO] [stdout] 523 | |                     is_native,
[INFO] [stdout] 524 | |                     &mut curr_native_idx,
[INFO] [stdout] 525 | |                     Some(child),
[INFO] [stdout] ...   |
[INFO] [stdout] 532 | |                     gen,
[INFO] [stdout] 533 | |                 );
[INFO] [stdout]     | |_________________^ mutable borrow occurs here
[INFO] [stdout] 
[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 E0502`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `avalanche` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "607dddd82cb18c156e565a8841cfa0851bff01fa6d30f700b82fe5225b5d4eff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "607dddd82cb18c156e565a8841cfa0851bff01fa6d30f700b82fe5225b5d4eff", kill_on_drop: false }`
[INFO] [stdout] 607dddd82cb18c156e565a8841cfa0851bff01fa6d30f700b82fe5225b5d4eff