[INFO] fetching crate key-vec 0.2.5...
[INFO] checking key-vec-0.2.5 against master#db870ea71b6dcc7a91b999420b88f41d3cdd13e1 for pr-75192
[INFO] extracting crate key-vec 0.2.5 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate key-vec 0.2.5 on toolchain db870ea71b6dcc7a91b999420b88f41d3cdd13e1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate key-vec 0.2.5
[INFO] finished tweaking crates.io crate key-vec 0.2.5
[INFO] tweaked toml for crates.io crate key-vec 0.2.5 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate key-vec 0.2.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "metadata" "--no-deps" "--format-version=1", 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] a7abc3f7331e7796f5ba7d29238cb7853d425bd3bc6821d1a25e8dd0f9feefb5
[INFO] running `Command { std: "docker" "start" "-a" "a7abc3f7331e7796f5ba7d29238cb7853d425bd3bc6821d1a25e8dd0f9feefb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7abc3f7331e7796f5ba7d29238cb7853d425bd3bc6821d1a25e8dd0f9feefb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7abc3f7331e7796f5ba7d29238cb7853d425bd3bc6821d1a25e8dd0f9feefb5", kill_on_drop: false }`
[INFO] [stdout] a7abc3f7331e7796f5ba7d29238cb7853d425bd3bc6821d1a25e8dd0f9feefb5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "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] ef299fb1e30662d040a6e270d2b737adeae50cd0cd1298aa498a03f6f92159ad
[INFO] running `Command { std: "docker" "start" "-a" "ef299fb1e30662d040a6e270d2b737adeae50cd0cd1298aa498a03f6f92159ad", kill_on_drop: false }`
[INFO] [stderr]     Checking key-vec v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "ef299fb1e30662d040a6e270d2b737adeae50cd0cd1298aa498a03f6f92159ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef299fb1e30662d040a6e270d2b737adeae50cd0cd1298aa498a03f6f92159ad", kill_on_drop: false }`
[INFO] [stdout] ef299fb1e30662d040a6e270d2b737adeae50cd0cd1298aa498a03f6f92159ad