[INFO] fetching crate open 1.4.0...
[INFO] checking open-1.4.0 against master#c724b67e1b474262917a5154d74e7072267593fe for pr-74315
[INFO] extracting crate open 1.4.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate open 1.4.0 on toolchain c724b67e1b474262917a5154d74e7072267593fe
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate open 1.4.0
[INFO] finished tweaking crates.io crate open 1.4.0
[INFO] tweaked toml for crates.io crate open 1.4.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate open 1.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "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] 6bd3b747a43330bfee3f258b7557932361a6e98a71158a14de4a67572c319fea
[INFO] running `Command { std: "docker" "start" "-a" "6bd3b747a43330bfee3f258b7557932361a6e98a71158a14de4a67572c319fea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6bd3b747a43330bfee3f258b7557932361a6e98a71158a14de4a67572c319fea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bd3b747a43330bfee3f258b7557932361a6e98a71158a14de4a67572c319fea", kill_on_drop: false }`
[INFO] [stdout] 6bd3b747a43330bfee3f258b7557932361a6e98a71158a14de4a67572c319fea
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b54cb8ed047df5a86aee8c00af43531e8fbd45de4be46cbb26f401a1e4bf2734
[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" "b54cb8ed047df5a86aee8c00af43531e8fbd45de4be46cbb26f401a1e4bf2734", kill_on_drop: false }`
[INFO] [stderr]     Checking open v1.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "b54cb8ed047df5a86aee8c00af43531e8fbd45de4be46cbb26f401a1e4bf2734", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b54cb8ed047df5a86aee8c00af43531e8fbd45de4be46cbb26f401a1e4bf2734", kill_on_drop: false }`
[INFO] [stdout] b54cb8ed047df5a86aee8c00af43531e8fbd45de4be46cbb26f401a1e4bf2734