[INFO] fetching crate zerogc-context 0.2.0-alpha.1...
[INFO] checking zerogc-context-0.2.0-alpha.1 against master#339e19697a39a78f4d669c217b7d21109215de41 for pr-81213
[INFO] extracting crate zerogc-context 0.2.0-alpha.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate zerogc-context 0.2.0-alpha.1 on toolchain 339e19697a39a78f4d669c217b7d21109215de41
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate zerogc-context 0.2.0-alpha.1
[INFO] finished tweaking crates.io crate zerogc-context 0.2.0-alpha.1
[INFO] tweaked toml for crates.io crate zerogc-context 0.2.0-alpha.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "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" "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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a1ed622133d48008edde583d092ceb3c151db5ac346150e2326bd80f997c081
[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" "8a1ed622133d48008edde583d092ceb3c151db5ac346150e2326bd80f997c081", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a1ed622133d48008edde583d092ceb3c151db5ac346150e2326bd80f997c081", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a1ed622133d48008edde583d092ceb3c151db5ac346150e2326bd80f997c081", kill_on_drop: false }`
[INFO] [stdout] 8a1ed622133d48008edde583d092ceb3c151db5ac346150e2326bd80f997c081
[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" "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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "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] f76551f9b727d71a0500085281445bf0dfd537058bb1766e2b7dbaeaf75b990f
[INFO] running `Command { std: "docker" "start" "-a" "f76551f9b727d71a0500085281445bf0dfd537058bb1766e2b7dbaeaf75b990f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking zerogc v0.2.0-alpha.1
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking zerogc-context v0.2.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.39s
[INFO] running `Command { std: "docker" "inspect" "f76551f9b727d71a0500085281445bf0dfd537058bb1766e2b7dbaeaf75b990f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f76551f9b727d71a0500085281445bf0dfd537058bb1766e2b7dbaeaf75b990f", kill_on_drop: false }`
[INFO] [stdout] f76551f9b727d71a0500085281445bf0dfd537058bb1766e2b7dbaeaf75b990f