[INFO] fetching crate viewp 0.1.4...
[INFO] checking viewp-0.1.4 against master#39b841dfe36f90a7cd111e7f0c55f32594f6e578 for pr-77035
[INFO] extracting crate viewp 0.1.4 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate viewp 0.1.4 on toolchain 39b841dfe36f90a7cd111e7f0c55f32594f6e578
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate viewp 0.1.4
[INFO] finished tweaking crates.io crate viewp 0.1.4
[INFO] tweaked toml for crates.io crate viewp 0.1.4 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate viewp 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d948cb58d9b57fe2c2cfde0a45c250a895659deaf93e02a2ab82855f7c28c128
[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" "d948cb58d9b57fe2c2cfde0a45c250a895659deaf93e02a2ab82855f7c28c128", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d948cb58d9b57fe2c2cfde0a45c250a895659deaf93e02a2ab82855f7c28c128", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d948cb58d9b57fe2c2cfde0a45c250a895659deaf93e02a2ab82855f7c28c128", kill_on_drop: false }`
[INFO] [stdout] d948cb58d9b57fe2c2cfde0a45c250a895659deaf93e02a2ab82855f7c28c128
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "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] b11da5aa6b09a03b5c3b5c2f2b98b981acec9062bc84093954e01900cb0db4c4
[INFO] running `Command { std: "docker" "start" "-a" "b11da5aa6b09a03b5c3b5c2f2b98b981acec9062bc84093954e01900cb0db4c4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking viewp v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "b11da5aa6b09a03b5c3b5c2f2b98b981acec9062bc84093954e01900cb0db4c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b11da5aa6b09a03b5c3b5c2f2b98b981acec9062bc84093954e01900cb0db4c4", kill_on_drop: false }`
[INFO] [stdout] b11da5aa6b09a03b5c3b5c2f2b98b981acec9062bc84093954e01900cb0db4c4