[INFO] fetching crate pair_macro 0.1.3...
[INFO] checking pair_macro-0.1.3 against master#39b841dfe36f90a7cd111e7f0c55f32594f6e578 for pr-77035
[INFO] extracting crate pair_macro 0.1.3 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate pair_macro 0.1.3 on toolchain 39b841dfe36f90a7cd111e7f0c55f32594f6e578
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pair_macro 0.1.3
[INFO] finished tweaking crates.io crate pair_macro 0.1.3
[INFO] tweaked toml for crates.io crate pair_macro 0.1.3 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 49cbfcf39a21ba616492efa605489324900f540cd9468a6e2c379f96f351a2a8
[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" "49cbfcf39a21ba616492efa605489324900f540cd9468a6e2c379f96f351a2a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49cbfcf39a21ba616492efa605489324900f540cd9468a6e2c379f96f351a2a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49cbfcf39a21ba616492efa605489324900f540cd9468a6e2c379f96f351a2a8", kill_on_drop: false }`
[INFO] [stdout] 49cbfcf39a21ba616492efa605489324900f540cd9468a6e2c379f96f351a2a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52329c22575c5b5d12bab635117151b44ebd16a0558cff893f0df4cca8ffeb68
[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" "52329c22575c5b5d12bab635117151b44ebd16a0558cff893f0df4cca8ffeb68", kill_on_drop: false }`
[INFO] [stderr]     Checking pair_macro v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_json v1.0.60
[INFO] [stdout] warning: use of deprecated associated function `Pair::<T>::fold`: Use into_iter().fold(init, f) instead
[INFO] [stdout]    --> src/lib.rs:756:33
[INFO] [stdout]     |
[INFO] [stdout] 756 |         let f = Pair::new(2, 3).fold(1, |acc, cur| acc * cur);
[INFO] [stdout]     |                                 ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.92s
[INFO] running `Command { std: "docker" "inspect" "52329c22575c5b5d12bab635117151b44ebd16a0558cff893f0df4cca8ffeb68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52329c22575c5b5d12bab635117151b44ebd16a0558cff893f0df4cca8ffeb68", kill_on_drop: false }`
[INFO] [stdout] 52329c22575c5b5d12bab635117151b44ebd16a0558cff893f0df4cca8ffeb68