[INFO] cloning repository https://github.com/tuzz/chaffin-variation-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tuzz/chaffin-variation-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftuzz%2Fchaffin-variation-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftuzz%2Fchaffin-variation-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 70ecd2f280d2dca488eadd90f1b4b2ed5d19e40f
[INFO] checking tuzz/chaffin-variation-rust against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftuzz%2Fchaffin-variation-rust" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tuzz/chaffin-variation-rust on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tuzz/chaffin-variation-rust
[INFO] finished tweaking git repo https://github.com/tuzz/chaffin-variation-rust
[INFO] tweaked toml for git repo https://github.com/tuzz/chaffin-variation-rust written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/tuzz/chaffin-variation-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae4cb00d5d81552b736b4dcdd3d800bbfe73aca8b8eed6231a0cd6b0bbd928ca
[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" "ae4cb00d5d81552b736b4dcdd3d800bbfe73aca8b8eed6231a0cd6b0bbd928ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae4cb00d5d81552b736b4dcdd3d800bbfe73aca8b8eed6231a0cd6b0bbd928ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae4cb00d5d81552b736b4dcdd3d800bbfe73aca8b8eed6231a0cd6b0bbd928ca", kill_on_drop: false }`
[INFO] [stdout] ae4cb00d5d81552b736b4dcdd3d800bbfe73aca8b8eed6231a0cd6b0bbd928ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30d5f0a844c1e693c0063fec7b177b85c39567fbab1d2a27ef5fd2271bef52a4
[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" "30d5f0a844c1e693c0063fec7b177b85c39567fbab1d2a27ef5fd2271bef52a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.64
[INFO] [stderr]     Checking lehmer v3.0.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking chaffin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.49s
[INFO] running `Command { std: "docker" "inspect" "30d5f0a844c1e693c0063fec7b177b85c39567fbab1d2a27ef5fd2271bef52a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30d5f0a844c1e693c0063fec7b177b85c39567fbab1d2a27ef5fd2271bef52a4", kill_on_drop: false }`
[INFO] [stdout] 30d5f0a844c1e693c0063fec7b177b85c39567fbab1d2a27ef5fd2271bef52a4