[INFO] fetching crate dfu 0.2.1...
[INFO] checking dfu-0.2.1 against master#d902752866cbbdb331e3cf28ff6bba86ab0f6c62 for pr-77271
[INFO] extracting crate dfu 0.2.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate dfu 0.2.1 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 dfu 0.2.1
[INFO] finished tweaking crates.io crate dfu 0.2.1
[INFO] tweaked toml for crates.io crate dfu 0.2.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 4f9e4997d93efebce1348032183b412d611d0d792f31d8deeb8212e024524c56
[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" "4f9e4997d93efebce1348032183b412d611d0d792f31d8deeb8212e024524c56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f9e4997d93efebce1348032183b412d611d0d792f31d8deeb8212e024524c56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f9e4997d93efebce1348032183b412d611d0d792f31d8deeb8212e024524c56", kill_on_drop: false }`
[INFO] [stdout] 4f9e4997d93efebce1348032183b412d611d0d792f31d8deeb8212e024524c56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2a6c4d6d09cff7b24ffc11572b6fb0070e75452bc58b73a615870b396dce66f6
[INFO] running `Command { std: "docker" "start" "-a" "2a6c4d6d09cff7b24ffc11572b6fb0070e75452bc58b73a615870b396dce66f6", kill_on_drop: false }`
[INFO] [stderr]     Checking array-init v0.0.4
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]     Checking nix v0.18.0
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]     Checking serde v1.0.116
[INFO] [stderr]     Checking serde-hex v0.1.0
[INFO] [stderr]     Checking sysfs-serde v0.2.1
[INFO] [stderr]     Checking usbapi v0.2.1
[INFO] [stderr]     Checking dfu v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 43.59s
[INFO] running `Command { std: "docker" "inspect" "2a6c4d6d09cff7b24ffc11572b6fb0070e75452bc58b73a615870b396dce66f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a6c4d6d09cff7b24ffc11572b6fb0070e75452bc58b73a615870b396dce66f6", kill_on_drop: false }`
[INFO] [stdout] 2a6c4d6d09cff7b24ffc11572b6fb0070e75452bc58b73a615870b396dce66f6