[INFO] fetching crate double-checked-cell-async 2.0.2...
[INFO] checking double-checked-cell-async-2.0.2 against master#0dce3f606e05cffab7361c132a399d3550ab0df8 for pr-78376
[INFO] extracting crate double-checked-cell-async 2.0.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate double-checked-cell-async 2.0.2 on toolchain 0dce3f606e05cffab7361c132a399d3550ab0df8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate double-checked-cell-async 2.0.2
[INFO] finished tweaking crates.io crate double-checked-cell-async 2.0.2
[INFO] tweaked toml for crates.io crate double-checked-cell-async 2.0.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "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] 0e0b16bb8d19086f26e7966c0c648500b0b6540ee27fef56c83eeb382b8abc56
[INFO] running `Command { std: "docker" "start" "-a" "0e0b16bb8d19086f26e7966c0c648500b0b6540ee27fef56c83eeb382b8abc56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e0b16bb8d19086f26e7966c0c648500b0b6540ee27fef56c83eeb382b8abc56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e0b16bb8d19086f26e7966c0c648500b0b6540ee27fef56c83eeb382b8abc56", kill_on_drop: false }`
[INFO] [stdout] 0e0b16bb8d19086f26e7966c0c648500b0b6540ee27fef56c83eeb382b8abc56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb9851d1c1eb465a19b2b7510115f78c3264ad499408a7af399b548589ce2fa7
[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" "eb9851d1c1eb465a19b2b7510115f78c3264ad499408a7af399b548589ce2fa7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]     Checking futures-core v0.3.7
[INFO] [stderr]     Checking futures-sink v0.3.7
[INFO] [stderr]     Checking futures-io v0.3.7
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking futures-task v0.3.7
[INFO] [stderr]     Checking futures-channel v0.3.7
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling pin-project-internal v1.0.1
[INFO] [stderr]    Compiling futures-macro v0.3.7
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking pin-project v1.0.1
[INFO] [stderr]     Checking futures-util v0.3.7
[INFO] [stderr]     Checking futures-executor v0.3.7
[INFO] [stderr]     Checking double-checked-cell-async v2.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking futures v0.3.7
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.01s
[INFO] running `Command { std: "docker" "inspect" "eb9851d1c1eb465a19b2b7510115f78c3264ad499408a7af399b548589ce2fa7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb9851d1c1eb465a19b2b7510115f78c3264ad499408a7af399b548589ce2fa7", kill_on_drop: false }`
[INFO] [stdout] eb9851d1c1eb465a19b2b7510115f78c3264ad499408a7af399b548589ce2fa7