[INFO] fetching crate atsamd51n20a 0.7.1...
[INFO] checking atsamd51n20a-0.7.1 against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] extracting crate atsamd51n20a 0.7.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate atsamd51n20a 0.7.1 on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate atsamd51n20a 0.7.1
[INFO] finished tweaking crates.io crate atsamd51n20a 0.7.1
[INFO] tweaked toml for crates.io crate atsamd51n20a 0.7.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc8c9bc3f07dc026634de4e191f0b7ffe08eb3c41e0dfc7b194c300df145a4ac
[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" "bc8c9bc3f07dc026634de4e191f0b7ffe08eb3c41e0dfc7b194c300df145a4ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc8c9bc3f07dc026634de4e191f0b7ffe08eb3c41e0dfc7b194c300df145a4ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc8c9bc3f07dc026634de4e191f0b7ffe08eb3c41e0dfc7b194c300df145a4ac", kill_on_drop: false }`
[INFO] [stdout] bc8c9bc3f07dc026634de4e191f0b7ffe08eb3c41e0dfc7b194c300df145a4ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da1a6eef0d685dd4b0a466326b3b63e4e60d1e515c40ae92d3a505f294ef2bad
[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" "da1a6eef0d685dd4b0a466326b3b63e4e60d1e515c40ae92d3a505f294ef2bad", kill_on_drop: false }`
[INFO] [stderr]    Compiling atsamd51n20a v0.7.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.19s
[INFO] running `Command { std: "docker" "inspect" "da1a6eef0d685dd4b0a466326b3b63e4e60d1e515c40ae92d3a505f294ef2bad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da1a6eef0d685dd4b0a466326b3b63e4e60d1e515c40ae92d3a505f294ef2bad", kill_on_drop: false }`
[INFO] [stdout] da1a6eef0d685dd4b0a466326b3b63e4e60d1e515c40ae92d3a505f294ef2bad