[INFO] fetching crate flips 0.2.1...
[INFO] checking flips-0.2.1 against master#31ee872db5aae4750e3da1ca4ed1523c4356947f for pr-78461
[INFO] extracting crate flips 0.2.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate flips 0.2.1 on toolchain 31ee872db5aae4750e3da1ca4ed1523c4356947f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flips 0.2.1
[INFO] finished tweaking crates.io crate flips 0.2.1
[INFO] tweaked toml for crates.io crate flips 0.2.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "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] e9fbadfe15ecc638e2402e351ca6cf57482adf93cfc78c14ba5c204cab99be63
[INFO] running `Command { std: "docker" "start" "-a" "e9fbadfe15ecc638e2402e351ca6cf57482adf93cfc78c14ba5c204cab99be63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9fbadfe15ecc638e2402e351ca6cf57482adf93cfc78c14ba5c204cab99be63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9fbadfe15ecc638e2402e351ca6cf57482adf93cfc78c14ba5c204cab99be63", kill_on_drop: false }`
[INFO] [stdout] e9fbadfe15ecc638e2402e351ca6cf57482adf93cfc78c14ba5c204cab99be63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "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] 67cfed714eb1bf485a21dfe94b6eb03c7ae2ce67a9bab930e388c8c8022e7181
[INFO] running `Command { std: "docker" "start" "-a" "67cfed714eb1bf485a21dfe94b6eb03c7ae2ce67a9bab930e388c8c8022e7181", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling rustversion v1.0.4
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling cc v1.0.61
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling err-derive v0.2.4
[INFO] [stderr]    Compiling flips-sys v0.2.1
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking flips v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.28s
[INFO] running `Command { std: "docker" "inspect" "67cfed714eb1bf485a21dfe94b6eb03c7ae2ce67a9bab930e388c8c8022e7181", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67cfed714eb1bf485a21dfe94b6eb03c7ae2ce67a9bab930e388c8c8022e7181", kill_on_drop: false }`
[INFO] [stdout] 67cfed714eb1bf485a21dfe94b6eb03c7ae2ce67a9bab930e388c8c8022e7181