[INFO] fetching crate arsc 0.1.5...
[INFO] checking arsc-0.1.5 against try#47af3d0de9d26c7deba4cfb203b710cc3f764e91 for pr-130443
[INFO] extracting crate arsc 0.1.5 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate arsc 0.1.5 on toolchain 47af3d0de9d26c7deba4cfb203b710cc3f764e91
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+47af3d0de9d26c7deba4cfb203b710cc3f764e91" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arsc 0.1.5
[INFO] finished tweaking crates.io crate arsc 0.1.5
[INFO] tweaked toml for crates.io crate arsc 0.1.5 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+47af3d0de9d26c7deba4cfb203b710cc3f764e91" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 14 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+47af3d0de9d26c7deba4cfb203b710cc3f764e91" "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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+47af3d0de9d26c7deba4cfb203b710cc3f764e91" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 98c274f54d6611c1d31fd840d3ab1bfbdadc2e8334959ad7f6b6c7b348d96c36
[INFO] running `Command { std: "docker" "start" "-a" "98c274f54d6611c1d31fd840d3ab1bfbdadc2e8334959ad7f6b6c7b348d96c36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98c274f54d6611c1d31fd840d3ab1bfbdadc2e8334959ad7f6b6c7b348d96c36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98c274f54d6611c1d31fd840d3ab1bfbdadc2e8334959ad7f6b6c7b348d96c36", kill_on_drop: false }`
[INFO] [stdout] 98c274f54d6611c1d31fd840d3ab1bfbdadc2e8334959ad7f6b6c7b348d96c36
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+47af3d0de9d26c7deba4cfb203b710cc3f764e91" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e3daa0189455f8648e5856de4e5bdc3b634e7ece98a79111f4615c6a03671f6
[INFO] running `Command { std: "docker" "start" "-a" "0e3daa0189455f8648e5856de4e5bdc3b634e7ece98a79111f4615c6a03671f6", kill_on_drop: false }`
[INFO] [stderr]     Checking arsc v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/writer/components_writing.rs:290:22
[INFO] [stdout]     |
[INFO] [stdout] 290 |         for specs in &self.specs {
[INFO] [stdout]     |                      ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 290 |         while let Some(specs) = &self.specs {
[INFO] [stdout]     |         ~~~~~~~~~~~~~~~     ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 290 |         if let Some(specs) = &self.specs {
[INFO] [stdout]     |         ~~~~~~~~~~~~     ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/writer/components_writing.rs:290:22
[INFO] [stdout]     |
[INFO] [stdout] 290 |         for specs in &self.specs {
[INFO] [stdout]     |                      ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 290 |         while let Some(specs) = &self.specs {
[INFO] [stdout]     |         ~~~~~~~~~~~~~~~     ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 290 |         if let Some(specs) = &self.specs {
[INFO] [stdout]     |         ~~~~~~~~~~~~     ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "0e3daa0189455f8648e5856de4e5bdc3b634e7ece98a79111f4615c6a03671f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e3daa0189455f8648e5856de4e5bdc3b634e7ece98a79111f4615c6a03671f6", kill_on_drop: false }`
[INFO] [stdout] 0e3daa0189455f8648e5856de4e5bdc3b634e7ece98a79111f4615c6a03671f6
