[INFO] cloning repository https://github.com/sandyc372/rust-demo [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sandyc372/rust-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsandyc372%2Frust-demo", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsandyc372%2Frust-demo'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 061f80fda67b1ee1ceb42c6a77947afdc9de73bf [INFO] checking sandyc372/rust-demo against master#2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48 for pr-142723 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsandyc372%2Frust-demo" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/sandyc372/rust-demo on toolchain 2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/sandyc372/rust-demo [INFO] finished tweaking git repo https://github.com/sandyc372/rust-demo [INFO] tweaked toml for git repo https://github.com/sandyc372/rust-demo written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/sandyc372/rust-demo 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" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded iced_winit v0.1.0 [INFO] [stderr] Downloaded ndk-glue v0.1.0 [INFO] [stderr] Downloaded cocoa v0.20.1 [INFO] [stderr] Downloaded instant v0.1.4 [INFO] [stderr] Downloaded libmath v0.2.1 [INFO] [stderr] Downloaded iced_style v0.1.0 [INFO] [stderr] Downloaded svg_fmt v0.2.1 [INFO] [stderr] Downloaded clipboard_wayland v0.1.0 [INFO] [stderr] Downloaded iced_futures v0.1.2 [INFO] [stderr] Downloaded rendy-descriptor v0.5.1 [INFO] [stderr] Downloaded iced_core v0.2.1 [INFO] [stderr] Downloaded d3d12 v0.3.0 [INFO] [stderr] Downloaded iced_web v0.2.1 [INFO] [stderr] Downloaded guillotiere v0.4.4 [INFO] [stderr] Downloaded dodrio v0.1.0 [INFO] [stderr] Downloaded gfx-backend-dx11 v0.4.6 [INFO] [stderr] Downloaded font-kit v0.4.0 [INFO] [stderr] Downloaded bumpalo v2.6.0 [INFO] [stderr] Downloaded gfx-backend-metal v0.4.5 [INFO] [stderr] Downloaded wgpu_glyph v0.7.0 [INFO] [stderr] Downloaded ndk-sys v0.1.0 [INFO] [stderr] Downloaded winit v0.22.2 [INFO] [stderr] 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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9e7f42f219848deab79d7bfb193915b088db45a74b1049aebefc017225aa0774 [INFO] running `Command { std: "docker" "start" "-a" "9e7f42f219848deab79d7bfb193915b088db45a74b1049aebefc017225aa0774", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9e7f42f219848deab79d7bfb193915b088db45a74b1049aebefc017225aa0774", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9e7f42f219848deab79d7bfb193915b088db45a74b1049aebefc017225aa0774", kill_on_drop: false }` [INFO] [stdout] 9e7f42f219848deab79d7bfb193915b088db45a74b1049aebefc017225aa0774 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 99f0bf7631388d7623b9aaa2bf79287161e5b5ff6d7568b40968eecd0ec3a2f2 [INFO] running `Command { std: "docker" "start" "-a" "99f0bf7631388d7623b9aaa2bf79287161e5b5ff6d7568b40968eecd0ec3a2f2", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.71 [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling 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[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/iced_test/mod.rs:42:13 [INFO] [stdout] | [INFO] [stdout] 42 | fn view(&mut self) -> Element { [INFO] [stdout] | ^^^^^^^^^ ---------------- the lifetime gets resolved as `'_` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 42 | fn view(&mut self) -> Element<'_, Message> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/factorial_chains/mod.rs:99:5 [INFO] [stdout] | [INFO] [stdout] 99 | insert(&mut head.as_mut(), new_number); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 99 | let _ = insert(&mut head.as_mut(), new_number); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/iced_test/mod.rs:42:13 [INFO] [stdout] | [INFO] [stdout] 42 | fn view(&mut self) -> Element { [INFO] [stdout] | ^^^^^^^^^ ---------------- the lifetime gets resolved as `'_` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 42 | fn view(&mut self) -> Element<'_, Message> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/factorial_chains/mod.rs:99:5 [INFO] [stdout] | [INFO] [stdout] 99 | insert(&mut head.as_mut(), new_number); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 99 | let _ = insert(&mut head.as_mut(), new_number); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 15s [INFO] running `Command { std: "docker" "inspect" "99f0bf7631388d7623b9aaa2bf79287161e5b5ff6d7568b40968eecd0ec3a2f2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "99f0bf7631388d7623b9aaa2bf79287161e5b5ff6d7568b40968eecd0ec3a2f2", kill_on_drop: false }` [INFO] [stdout] 99f0bf7631388d7623b9aaa2bf79287161e5b5ff6d7568b40968eecd0ec3a2f2