[INFO] fetching crate kern 1.2.3...
[INFO] checking kern-1.2.3 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate kern 1.2.3 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate kern 1.2.3 on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kern 1.2.3
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate kern 1.2.3
[INFO] tweaked toml for crates.io crate kern 1.2.3 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate kern 1.2.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8689a25de3baf66c58ba29f4789cfde4087ca0faf630387b165f558cd2a5ecba
[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" "8689a25de3baf66c58ba29f4789cfde4087ca0faf630387b165f558cd2a5ecba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8689a25de3baf66c58ba29f4789cfde4087ca0faf630387b165f558cd2a5ecba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8689a25de3baf66c58ba29f4789cfde4087ca0faf630387b165f558cd2a5ecba", kill_on_drop: false }`
[INFO] [stdout] 8689a25de3baf66c58ba29f4789cfde4087ca0faf630387b165f558cd2a5ecba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a6f9d0a5655e6404f7ca0596edbb7f3a17c5d23c947a19ac969c5139b4f3dc10
[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" "a6f9d0a5655e6404f7ca0596edbb7f3a17c5d23c947a19ac969c5139b4f3dc10", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking kern v1.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.87s
[INFO] running `Command { std: "docker" "inspect" "a6f9d0a5655e6404f7ca0596edbb7f3a17c5d23c947a19ac969c5139b4f3dc10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6f9d0a5655e6404f7ca0596edbb7f3a17c5d23c947a19ac969c5139b4f3dc10", kill_on_drop: false }`
[INFO] [stdout] a6f9d0a5655e6404f7ca0596edbb7f3a17c5d23c947a19ac969c5139b4f3dc10