[INFO] fetching crate rect-iter 0.3.0...
[INFO] checking rect-iter-0.3.0 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate rect-iter 0.3.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate rect-iter 0.3.0 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rect-iter 0.3.0
[INFO] finished tweaking crates.io crate rect-iter 0.3.0
[INFO] tweaked toml for crates.io crate rect-iter 0.3.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2db5da8f5d50245005ad7fc3d1c53827809efa9479b54d40b77de6c729140c7d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2db5da8f5d50245005ad7fc3d1c53827809efa9479b54d40b77de6c729140c7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2db5da8f5d50245005ad7fc3d1c53827809efa9479b54d40b77de6c729140c7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2db5da8f5d50245005ad7fc3d1c53827809efa9479b54d40b77de6c729140c7d", kill_on_drop: false }`
[INFO] [stdout] 2db5da8f5d50245005ad7fc3d1c53827809efa9479b54d40b77de6c729140c7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec5f505b510f85d391ede0b0aa8d4a5c7a09a1cec2e314a38b2a57b55467d99f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ec5f505b510f85d391ede0b0aa8d4a5c7a09a1cec2e314a38b2a57b55467d99f", kill_on_drop: false }`
[INFO] [stderr]     Checking tuple-map v0.3.0
[INFO] [stderr]     Checking euclid v0.22.6
[INFO] [stderr]     Checking rect-iter v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]    --> src/lib.rs:825:32
[INFO] [stdout]     |
[INFO] [stdout] 825 |         for (&c, t) in correct.into_iter().rev().zip(r.into_iter().rev()) {
[INFO] [stdout]     |                                ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 825 |         for (&c, t) in correct.iter().rev().zip(r.into_iter().rev()) {
[INFO] [stdout]     |                                ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 825 |         for (&c, t) in IntoIterator::into_iter(correct).rev().zip(r.into_iter().rev()) {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.11s
[INFO] running `Command { std: "docker" "inspect" "ec5f505b510f85d391ede0b0aa8d4a5c7a09a1cec2e314a38b2a57b55467d99f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec5f505b510f85d391ede0b0aa8d4a5c7a09a1cec2e314a38b2a57b55467d99f", kill_on_drop: false }`
[INFO] [stdout] ec5f505b510f85d391ede0b0aa8d4a5c7a09a1cec2e314a38b2a57b55467d99f