[INFO] fetching crate egui_demo_lib 0.31.1...
[INFO] checking egui_demo_lib-0.31.1 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate egui_demo_lib 0.31.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate egui_demo_lib 0.31.1
[INFO] finished tweaking crates.io crate egui_demo_lib 0.31.1
[INFO] tweaked toml for crates.io crate egui_demo_lib 0.31.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate egui_demo_lib 0.31.1 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 391 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.5.1 (available: v0.6.0)
[INFO] [stderr]       Adding unicode_names2 v0.6.0 (available: v2.0.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7bb120b03eea8c8cf7ccd1dc242e2dd02b6ed119a13e73d6ee39907ff572158b
[INFO] running `Command { std: "docker" "start" "-a" "7bb120b03eea8c8cf7ccd1dc242e2dd02b6ed119a13e73d6ee39907ff572158b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7bb120b03eea8c8cf7ccd1dc242e2dd02b6ed119a13e73d6ee39907ff572158b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bb120b03eea8c8cf7ccd1dc242e2dd02b6ed119a13e73d6ee39907ff572158b", kill_on_drop: false }`
[INFO] [stdout] 7bb120b03eea8c8cf7ccd1dc242e2dd02b6ed119a13e73d6ee39907ff572158b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e14e295fdacbeb2140752966530d36822fd27d9adb84bb998e2fd668b5b8a878
[INFO] running `Command { std: "docker" "start" "-a" "e14e295fdacbeb2140752966530d36822fd27d9adb84bb998e2fd668b5b8a878", kill_on_drop: false }`
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[INFO] [stderr]     Checking egui v0.31.1
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[INFO] [stderr]     Checking gpu-alloc v0.6.0
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stderr]     Checking egui_extras v0.31.1
[INFO] [stderr]     Checking egui_demo_lib v0.31.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/demo/widget_gallery.rs:52:29
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn with_date_button(mut self, _with_date_button: bool) -> Self {
[INFO] [stdout]    |                             ----^^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking egui-wgpu v0.31.1
[INFO] [stderr]     Checking egui_kittest v0.31.1
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/demo/widget_gallery.rs:52:29
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn with_date_button(mut self, _with_date_button: bool) -> Self {
[INFO] [stdout]    |                             ----^^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 49.00s
[INFO] running `Command { std: "docker" "inspect" "e14e295fdacbeb2140752966530d36822fd27d9adb84bb998e2fd668b5b8a878", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e14e295fdacbeb2140752966530d36822fd27d9adb84bb998e2fd668b5b8a878", kill_on_drop: false }`
[INFO] [stdout] e14e295fdacbeb2140752966530d36822fd27d9adb84bb998e2fd668b5b8a878