[INFO] fetching crate pair_macro 0.1.4...
[INFO] checking pair_macro-0.1.4 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate pair_macro 0.1.4 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate pair_macro 0.1.4 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pair_macro 0.1.4
[INFO] finished tweaking crates.io crate pair_macro 0.1.4
[INFO] tweaked toml for crates.io crate pair_macro 0.1.4 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6904dd8be0ffb4eeaf996f71b289e532ccd692d1b47bde1ccbe61508d0246374
[INFO] running `Command { std: "docker" "start" "-a" "6904dd8be0ffb4eeaf996f71b289e532ccd692d1b47bde1ccbe61508d0246374", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6904dd8be0ffb4eeaf996f71b289e532ccd692d1b47bde1ccbe61508d0246374", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6904dd8be0ffb4eeaf996f71b289e532ccd692d1b47bde1ccbe61508d0246374", kill_on_drop: false }`
[INFO] [stdout] 6904dd8be0ffb4eeaf996f71b289e532ccd692d1b47bde1ccbe61508d0246374
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c73ab5978cf5e1a040c3fecb4d62c8d09002599216bfb85d870ae1231a8b7a7
[INFO] running `Command { std: "docker" "start" "-a" "0c73ab5978cf5e1a040c3fecb4d62c8d09002599216bfb85d870ae1231a8b7a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.209
[INFO] [stderr]     Checking pair_macro v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_json v1.0.127
[INFO] [stdout] warning: use of deprecated method `Pair::<T>::fold`: Use into_iter().fold(init, f) instead
[INFO] [stdout]    --> src/lib.rs:822:33
[INFO] [stdout]     |
[INFO] [stdout] 822 |         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` profile [unoptimized + debuginfo] target(s) in 2.44s
[INFO] running `Command { std: "docker" "inspect" "0c73ab5978cf5e1a040c3fecb4d62c8d09002599216bfb85d870ae1231a8b7a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c73ab5978cf5e1a040c3fecb4d62c8d09002599216bfb85d870ae1231a8b7a7", kill_on_drop: false }`
[INFO] [stdout] 0c73ab5978cf5e1a040c3fecb4d62c8d09002599216bfb85d870ae1231a8b7a7