[INFO] fetching crate os_stat 0.1.0...
[INFO] testing os_stat-0.1.0 against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] extracting crate os_stat 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate os_stat 0.1.0 on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate os_stat 0.1.0
[INFO] finished tweaking crates.io crate os_stat 0.1.0
[INFO] tweaked toml for crates.io crate os_stat 0.1.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 97efd2b5ca6cfa5aea0149bb207d0e5f857e6996a72ca34adb874013eeb39369
[INFO] running `Command { std: "docker" "start" "-a" "97efd2b5ca6cfa5aea0149bb207d0e5f857e6996a72ca34adb874013eeb39369", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97efd2b5ca6cfa5aea0149bb207d0e5f857e6996a72ca34adb874013eeb39369", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97efd2b5ca6cfa5aea0149bb207d0e5f857e6996a72ca34adb874013eeb39369", kill_on_drop: false }`
[INFO] [stdout] 97efd2b5ca6cfa5aea0149bb207d0e5f857e6996a72ca34adb874013eeb39369
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6455eef00c4644211411bc3e6835f4280fd016e8938898af684adab9143cbf64
[INFO] running `Command { std: "docker" "start" "-a" "6455eef00c4644211411bc3e6835f4280fd016e8938898af684adab9143cbf64", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling os_stat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `fold_first` found for struct `std::vec::IntoIter<u64>` in the current scope
[INFO] [stdout]   --> src/cpu.rs:60:39
[INFO] [stdout]    |
[INFO] [stdout] 60 |         stat.total = vals.into_iter().fold_first(|acc, val| acc + val).unwrap();
[INFO] [stdout]    |                                       ^^^^^^^^^^ method not found in `std::vec::IntoIter<u64>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `os_stat`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "6455eef00c4644211411bc3e6835f4280fd016e8938898af684adab9143cbf64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6455eef00c4644211411bc3e6835f4280fd016e8938898af684adab9143cbf64", kill_on_drop: false }`
[INFO] [stdout] 6455eef00c4644211411bc3e6835f4280fd016e8938898af684adab9143cbf64