[INFO] fetching crate graviton_core 0.6.0...
[INFO] checking graviton_core-0.6.0 against master#c9228570668803e3e6402770d55f23a12c9ae686 for pr-79472
[INFO] extracting crate graviton_core 0.6.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate graviton_core 0.6.0 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 graviton_core 0.6.0
[INFO] finished tweaking crates.io crate graviton_core 0.6.0
[INFO] tweaked toml for crates.io crate graviton_core 0.6.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5c97ab1a7778ed88f2483c2ddbeeb5b0e25f2a94bceb2e56b704e5ba4cda82d3
[INFO] running `Command { std: "docker" "start" "-a" "5c97ab1a7778ed88f2483c2ddbeeb5b0e25f2a94bceb2e56b704e5ba4cda82d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5c97ab1a7778ed88f2483c2ddbeeb5b0e25f2a94bceb2e56b704e5ba4cda82d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c97ab1a7778ed88f2483c2ddbeeb5b0e25f2a94bceb2e56b704e5ba4cda82d3", kill_on_drop: false }`
[INFO] [stdout] 5c97ab1a7778ed88f2483c2ddbeeb5b0e25f2a94bceb2e56b704e5ba4cda82d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] a174c78e7f911cf851c5e353214e4e3b132466bce5c4b3f35223c5fe77bbf7de
[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" "a174c78e7f911cf851c5e353214e4e3b132466bce5c4b3f35223c5fe77bbf7de", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking serde v1.0.118
[INFO] [stderr]     Checking graviton_core v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.01s
[INFO] running `Command { std: "docker" "inspect" "a174c78e7f911cf851c5e353214e4e3b132466bce5c4b3f35223c5fe77bbf7de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a174c78e7f911cf851c5e353214e4e3b132466bce5c4b3f35223c5fe77bbf7de", kill_on_drop: false }`
[INFO] [stdout] a174c78e7f911cf851c5e353214e4e3b132466bce5c4b3f35223c5fe77bbf7de