[INFO] fetching crate polling 2.0.2...
[INFO] checking polling-2.0.2 against master#c9228570668803e3e6402770d55f23a12c9ae686 for pr-79472
[INFO] extracting crate polling 2.0.2 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate polling 2.0.2 on toolchain c9228570668803e3e6402770d55f23a12c9ae686
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polling 2.0.2
[INFO] finished tweaking crates.io crate polling 2.0.2
[INFO] tweaked toml for crates.io crate polling 2.0.2 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate polling 2.0.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+c9228570668803e3e6402770d55f23a12c9ae686" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] baffb203672ec88da1bf610d368cfc5852f160797650690d13b472c78a2b8424
[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" "baffb203672ec88da1bf610d368cfc5852f160797650690d13b472c78a2b8424", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "baffb203672ec88da1bf610d368cfc5852f160797650690d13b472c78a2b8424", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "baffb203672ec88da1bf610d368cfc5852f160797650690d13b472c78a2b8424", kill_on_drop: false }`
[INFO] [stdout] baffb203672ec88da1bf610d368cfc5852f160797650690d13b472c78a2b8424
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+c9228570668803e3e6402770d55f23a12c9ae686" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b9e1ff98830c797677957f787cd6923edb35a267f3d87ec8cb411a89f0781e6
[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" "2b9e1ff98830c797677957f787cd6923edb35a267f3d87ec8cb411a89f0781e6", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking easy-parallel v3.1.0
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking polling v2.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.33s
[INFO] running `Command { std: "docker" "inspect" "2b9e1ff98830c797677957f787cd6923edb35a267f3d87ec8cb411a89f0781e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b9e1ff98830c797677957f787cd6923edb35a267f3d87ec8cb411a89f0781e6", kill_on_drop: false }`
[INFO] [stdout] 2b9e1ff98830c797677957f787cd6923edb35a267f3d87ec8cb411a89f0781e6