[INFO] fetching crate mimalloc 0.1.25...
[INFO] checking mimalloc-0.1.25 against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] extracting crate mimalloc 0.1.25 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate mimalloc 0.1.25 on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mimalloc 0.1.25
[INFO] finished tweaking crates.io crate mimalloc 0.1.25
[INFO] tweaked toml for crates.io crate mimalloc 0.1.25 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "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] c7c81e41d5f621b60853cac88c10bf1a5bc73cf257cb615336d9a1d5aa72db7c
[INFO] running `Command { std: "docker" "start" "-a" "c7c81e41d5f621b60853cac88c10bf1a5bc73cf257cb615336d9a1d5aa72db7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7c81e41d5f621b60853cac88c10bf1a5bc73cf257cb615336d9a1d5aa72db7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7c81e41d5f621b60853cac88c10bf1a5bc73cf257cb615336d9a1d5aa72db7c", kill_on_drop: false }`
[INFO] [stdout] c7c81e41d5f621b60853cac88c10bf1a5bc73cf257cb615336d9a1d5aa72db7c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 00cfc453bf9c1d4eb85d2046a67b6781443e1c779783508df896a44eb86d5b67
[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" "00cfc453bf9c1d4eb85d2046a67b6781443e1c779783508df896a44eb86d5b67", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling libmimalloc-sys v0.1.21
[INFO] [stderr]     Checking mimalloc v0.1.25 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.52s
[INFO] running `Command { std: "docker" "inspect" "00cfc453bf9c1d4eb85d2046a67b6781443e1c779783508df896a44eb86d5b67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00cfc453bf9c1d4eb85d2046a67b6781443e1c779783508df896a44eb86d5b67", kill_on_drop: false }`
[INFO] [stdout] 00cfc453bf9c1d4eb85d2046a67b6781443e1c779783508df896a44eb86d5b67