[INFO] fetching crate extc 0.0.0-RESERVE...
[INFO] checking extc-0.0.0-RESERVE against master#39b841dfe36f90a7cd111e7f0c55f32594f6e578 for pr-77035
[INFO] extracting crate extc 0.0.0-RESERVE into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate extc 0.0.0-RESERVE 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 extc 0.0.0-RESERVE
[INFO] finished tweaking crates.io crate extc 0.0.0-RESERVE
[INFO] tweaked toml for crates.io crate extc 0.0.0-RESERVE written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate extc 0.0.0-RESERVE 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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2e33cdd74940faac6ee53e7cb37cc445a3dd396946cd806ca795dd6ab2459996
[INFO] running `Command { std: "docker" "start" "-a" "2e33cdd74940faac6ee53e7cb37cc445a3dd396946cd806ca795dd6ab2459996", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e33cdd74940faac6ee53e7cb37cc445a3dd396946cd806ca795dd6ab2459996", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e33cdd74940faac6ee53e7cb37cc445a3dd396946cd806ca795dd6ab2459996", kill_on_drop: false }`
[INFO] [stdout] 2e33cdd74940faac6ee53e7cb37cc445a3dd396946cd806ca795dd6ab2459996
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 65db0f981fec0e3f14aeed0905e8184da0f3354f6e88090d50819848522c03d8
[INFO] running `Command { std: "docker" "start" "-a" "65db0f981fec0e3f14aeed0905e8184da0f3354f6e88090d50819848522c03d8", kill_on_drop: false }`
[INFO] [stderr]     Checking extc v0.0.0-RESERVE (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "65db0f981fec0e3f14aeed0905e8184da0f3354f6e88090d50819848522c03d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65db0f981fec0e3f14aeed0905e8184da0f3354f6e88090d50819848522c03d8", kill_on_drop: false }`
[INFO] [stdout] 65db0f981fec0e3f14aeed0905e8184da0f3354f6e88090d50819848522c03d8