[INFO] fetching crate fuzzcheck_serializer 0.3.0...
[INFO] checking fuzzcheck_serializer-0.3.0 against try#22dd2dd1dc07f63ae9394352d412f020d2985684 for pr-74627
[INFO] extracting crate fuzzcheck_serializer 0.3.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate fuzzcheck_serializer 0.3.0 on toolchain 22dd2dd1dc07f63ae9394352d412f020d2985684
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+22dd2dd1dc07f63ae9394352d412f020d2985684" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fuzzcheck_serializer 0.3.0
[INFO] finished tweaking crates.io crate fuzzcheck_serializer 0.3.0
[INFO] tweaked toml for crates.io crate fuzzcheck_serializer 0.3.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+22dd2dd1dc07f63ae9394352d412f020d2985684" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+22dd2dd1dc07f63ae9394352d412f020d2985684" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fuzzcheck_traits v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+22dd2dd1dc07f63ae9394352d412f020d2985684" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a768c1adc746c0702127a5a8762b54685ab4873552e1bbf16cdab9b65fc4d783
[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" "a768c1adc746c0702127a5a8762b54685ab4873552e1bbf16cdab9b65fc4d783", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a768c1adc746c0702127a5a8762b54685ab4873552e1bbf16cdab9b65fc4d783", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a768c1adc746c0702127a5a8762b54685ab4873552e1bbf16cdab9b65fc4d783", kill_on_drop: false }`
[INFO] [stdout] a768c1adc746c0702127a5a8762b54685ab4873552e1bbf16cdab9b65fc4d783
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+22dd2dd1dc07f63ae9394352d412f020d2985684" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6742b83903fdf09a5666d75ab2e64d130f9b3528b61a9b996455e58657eb646a
[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" "6742b83903fdf09a5666d75ab2e64d130f9b3528b61a9b996455e58657eb646a", kill_on_drop: false }`
[INFO] [stderr]     Checking fuzzcheck_traits v0.3.0
[INFO] [stderr]     Checking fuzzcheck_serializer v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "6742b83903fdf09a5666d75ab2e64d130f9b3528b61a9b996455e58657eb646a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6742b83903fdf09a5666d75ab2e64d130f9b3528b61a9b996455e58657eb646a", kill_on_drop: false }`
[INFO] [stdout] 6742b83903fdf09a5666d75ab2e64d130f9b3528b61a9b996455e58657eb646a