[INFO] cloning repository https://github.com/cundd/yew-list-problem
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cundd/yew-list-problem" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcundd%2Fyew-list-problem", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcundd%2Fyew-list-problem'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2efbb0767dadc053ff744ca2e766509d67b98a17
[INFO] checking cundd/yew-list-problem against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcundd%2Fyew-list-problem" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cundd/yew-list-problem on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cundd/yew-list-problem
[INFO] finished tweaking git repo https://github.com/cundd/yew-list-problem
[INFO] tweaked toml for git repo https://github.com/cundd/yew-list-problem written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/cundd/yew-list-problem already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 2 packages
[INFO] [stderr]       Adding yew v0.11.1 (https://github.com/yewstack/yew?branch=master#d4868b0e)
[INFO] [stderr]       Adding yew-macro v0.11.1 (https://github.com/yewstack/yew?branch=master#d4868b0e)
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thiserror-impl v1.0.9
[INFO] [stderr]   Downloaded base-x v0.2.6
[INFO] [stderr]   Downloaded bincode v1.2.1
[INFO] [stderr]   Downloaded web_logger v0.2.0
[INFO] [stderr]   Downloaded thiserror v1.0.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d6a0b07d9fc8d11a508e0067894f875ef0502fb29e7f72ddcccdc7d5c2b2f3c
[INFO] running `Command { std: "docker" "start" "-a" "1d6a0b07d9fc8d11a508e0067894f875ef0502fb29e7f72ddcccdc7d5c2b2f3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d6a0b07d9fc8d11a508e0067894f875ef0502fb29e7f72ddcccdc7d5c2b2f3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d6a0b07d9fc8d11a508e0067894f875ef0502fb29e7f72ddcccdc7d5c2b2f3c", kill_on_drop: false }`
[INFO] [stdout] 1d6a0b07d9fc8d11a508e0067894f875ef0502fb29e7f72ddcccdc7d5c2b2f3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5fb090b5242d7aac56d7518fa621968d5248151ad9a751e812dd41574708b31
[INFO] running `Command { std: "docker" "start" "-a" "a5fb090b5242d7aac56d7518fa621968d5248151ad9a751e812dd41574708b31", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling stdweb-internal-runtime v0.1.5
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling stdweb v0.4.20
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling sha1 v0.6.0
[INFO] [stderr]    Compiling base-x v0.2.6
[INFO] [stderr]    Compiling yew-macro v0.11.1 (https://github.com/yewstack/yew?branch=master#d4868b0e)
[INFO] [stderr]    Compiling indexmap v1.3.1
[INFO] [stderr]    Compiling anyhow v1.0.26
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]     Checking discard v1.0.4
[INFO] [stderr]     Checking bytes v0.5.4
[INFO] [stderr]    Compiling yew v0.11.1 (https://github.com/yewstack/yew?branch=master#d4868b0e)
[INFO] [stderr]    Compiling boolinator v2.4.0
[INFO] [stderr]     Checking anymap v0.12.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking http v0.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling thiserror-impl v1.0.9
[INFO] [stderr]     Checking thiserror v1.0.9
[INFO] [stderr]     Checking serde_json v1.0.45
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]    Compiling stdweb-derive v0.5.3
[INFO] [stderr]    Compiling stdweb-internal-macros v0.2.9
[INFO] [stderr]     Checking web_logger v0.2.0
[INFO] [stderr]     Checking yew-app v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Component` is imported redundantly
[INFO] [stdout]  --> src/list.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use yew::prelude::*;
[INFO] [stdout]   |     --------------- the item `Component` is already imported here
[INFO] [stdout] 3 | use yew::virtual_dom::VNode;
[INFO] [stdout] 4 | use yew::{Component, ComponentLink};
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ComponentLink` is imported redundantly
[INFO] [stdout]  --> src/list.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use yew::prelude::*;
[INFO] [stdout]   |     --------------- the item `ComponentLink` is already imported here
[INFO] [stdout] 3 | use yew::virtual_dom::VNode;
[INFO] [stdout] 4 | use yew::{Component, ComponentLink};
[INFO] [stdout]   |                      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Component` is imported redundantly
[INFO] [stdout]  --> src/list_item.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use yew::prelude::*;
[INFO] [stdout]   |     --------------- the item `Component` is already imported here
[INFO] [stdout] 2 | use yew::virtual_dom::VNode;
[INFO] [stdout] 3 | use yew::{Component, ComponentLink};
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ComponentLink` is imported redundantly
[INFO] [stdout]  --> src/list_item.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use yew::prelude::*;
[INFO] [stdout]   |     --------------- the item `ComponentLink` is already imported here
[INFO] [stdout] 2 | use yew::virtual_dom::VNode;
[INFO] [stdout] 3 | use yew::{Component, ComponentLink};
[INFO] [stdout]   |                      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Component` is imported redundantly
[INFO] [stdout]  --> src/grid_item.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use yew::prelude::*;
[INFO] [stdout]   |     --------------- the item `Component` is already imported here
[INFO] [stdout] 3 | use yew::{Component, ComponentLink};
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ComponentLink` is imported redundantly
[INFO] [stdout]  --> src/grid_item.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use yew::prelude::*;
[INFO] [stdout]   |     --------------- the item `ComponentLink` is already imported here
[INFO] [stdout] 3 | use yew::{Component, ComponentLink};
[INFO] [stdout]   |                      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Component` is imported redundantly
[INFO] [stdout]  --> src/list.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use yew::prelude::*;
[INFO] [stdout]   |     --------------- the item `Component` is already imported here
[INFO] [stdout] 3 | use yew::virtual_dom::VNode;
[INFO] [stdout] 4 | use yew::{Component, ComponentLink};
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ComponentLink` is imported redundantly
[INFO] [stdout]  --> src/list.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use yew::prelude::*;
[INFO] [stdout]   |     --------------- the item `ComponentLink` is already imported here
[INFO] [stdout] 3 | use yew::virtual_dom::VNode;
[INFO] [stdout] 4 | use yew::{Component, ComponentLink};
[INFO] [stdout]   |                      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Component` is imported redundantly
[INFO] [stdout]  --> src/list_item.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use yew::prelude::*;
[INFO] [stdout]   |     --------------- the item `Component` is already imported here
[INFO] [stdout] 2 | use yew::virtual_dom::VNode;
[INFO] [stdout] 3 | use yew::{Component, ComponentLink};
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ComponentLink` is imported redundantly
[INFO] [stdout]  --> src/list_item.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use yew::prelude::*;
[INFO] [stdout]   |     --------------- the item `ComponentLink` is already imported here
[INFO] [stdout] 2 | use yew::virtual_dom::VNode;
[INFO] [stdout] 3 | use yew::{Component, ComponentLink};
[INFO] [stdout]   |                      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Component` is imported redundantly
[INFO] [stdout]  --> src/grid_item.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use yew::prelude::*;
[INFO] [stdout]   |     --------------- the item `Component` is already imported here
[INFO] [stdout] 3 | use yew::{Component, ComponentLink};
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ComponentLink` is imported redundantly
[INFO] [stdout]  --> src/grid_item.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use yew::prelude::*;
[INFO] [stdout]   |     --------------- the item `ComponentLink` is already imported here
[INFO] [stdout] 3 | use yew::{Component, ComponentLink};
[INFO] [stdout]   |                      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 39.08s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: stdweb v0.4.20
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "a5fb090b5242d7aac56d7518fa621968d5248151ad9a751e812dd41574708b31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5fb090b5242d7aac56d7518fa621968d5248151ad9a751e812dd41574708b31", kill_on_drop: false }`
[INFO] [stdout] a5fb090b5242d7aac56d7518fa621968d5248151ad9a751e812dd41574708b31