[INFO] fetching crate slotmap 0.4.0...
[INFO] checking slotmap-0.4.0 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate slotmap 0.4.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate slotmap 0.4.0 on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slotmap 0.4.0
[INFO] finished tweaking crates.io crate slotmap 0.4.0
[INFO] tweaked toml for crates.io crate slotmap 0.4.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 725e61ca1487fc80e227bff4e85770d68eff4cf5202772738b60606e3d403867
[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" "725e61ca1487fc80e227bff4e85770d68eff4cf5202772738b60606e3d403867", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "725e61ca1487fc80e227bff4e85770d68eff4cf5202772738b60606e3d403867", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "725e61ca1487fc80e227bff4e85770d68eff4cf5202772738b60606e3d403867", kill_on_drop: false }`
[INFO] [stdout] 725e61ca1487fc80e227bff4e85770d68eff4cf5202772738b60606e3d403867
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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] 9a6c330295894f78829309d3fb455e43fe483a2d2a3f44ab953924f6ec3c1a8f
[INFO] running `Command { std: "docker" "start" "-a" "9a6c330295894f78829309d3fb455e43fe483a2d2a3f44ab953924f6ec3c1a8f", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking slotmap v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking memchr v2.3.4
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking quickcheck v0.8.5
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.13s
[INFO] running `Command { std: "docker" "inspect" "9a6c330295894f78829309d3fb455e43fe483a2d2a3f44ab953924f6ec3c1a8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a6c330295894f78829309d3fb455e43fe483a2d2a3f44ab953924f6ec3c1a8f", kill_on_drop: false }`
[INFO] [stdout] 9a6c330295894f78829309d3fb455e43fe483a2d2a3f44ab953924f6ec3c1a8f