[INFO] fetching crate kvfmt 0.1.5...
[INFO] checking kvfmt-0.1.5 against master#d902752866cbbdb331e3cf28ff6bba86ab0f6c62 for pr-77271
[INFO] extracting crate kvfmt 0.1.5 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate kvfmt 0.1.5 on toolchain d902752866cbbdb331e3cf28ff6bba86ab0f6c62
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kvfmt 0.1.5
[INFO] finished tweaking crates.io crate kvfmt 0.1.5
[INFO] tweaked toml for crates.io crate kvfmt 0.1.5 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate kvfmt 0.1.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c2c5e71c070445800b770cef5e6c5c88b3aa521198eb1a9f609c9cfaf54c29a1
[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" "c2c5e71c070445800b770cef5e6c5c88b3aa521198eb1a9f609c9cfaf54c29a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c2c5e71c070445800b770cef5e6c5c88b3aa521198eb1a9f609c9cfaf54c29a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2c5e71c070445800b770cef5e6c5c88b3aa521198eb1a9f609c9cfaf54c29a1", kill_on_drop: false }`
[INFO] [stdout] c2c5e71c070445800b770cef5e6c5c88b3aa521198eb1a9f609c9cfaf54c29a1
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4369f95942be3f8c547256f2f940a09cf94a94f43d2f3504044e1c6f954cfa33
[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" "4369f95942be3f8c547256f2f940a09cf94a94f43d2f3504044e1c6f954cfa33", kill_on_drop: false }`
[INFO] [stderr]     Checking kvfmt v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "4369f95942be3f8c547256f2f940a09cf94a94f43d2f3504044e1c6f954cfa33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4369f95942be3f8c547256f2f940a09cf94a94f43d2f3504044e1c6f954cfa33", kill_on_drop: false }`
[INFO] [stdout] 4369f95942be3f8c547256f2f940a09cf94a94f43d2f3504044e1c6f954cfa33