[INFO] fetching crate serde_dyn 0.4.0...
[INFO] checking serde_dyn-0.4.0 against try#075992eda207e1647b699c8c8ada67b32ce7b115 for pr-77271
[INFO] extracting crate serde_dyn 0.4.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate serde_dyn 0.4.0 on toolchain 075992eda207e1647b699c8c8ada67b32ce7b115
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_dyn 0.4.0
[INFO] finished tweaking crates.io crate serde_dyn 0.4.0
[INFO] tweaked toml for crates.io crate serde_dyn 0.4.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+075992eda207e1647b699c8c8ada67b32ce7b115" "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] 778a407b4cbd5c04942673c05844be5ec09fe1b3eca176483c5702a723cfe70f
[INFO] running `Command { std: "docker" "start" "-a" "778a407b4cbd5c04942673c05844be5ec09fe1b3eca176483c5702a723cfe70f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "778a407b4cbd5c04942673c05844be5ec09fe1b3eca176483c5702a723cfe70f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "778a407b4cbd5c04942673c05844be5ec09fe1b3eca176483c5702a723cfe70f", kill_on_drop: false }`
[INFO] [stdout] 778a407b4cbd5c04942673c05844be5ec09fe1b3eca176483c5702a723cfe70f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+075992eda207e1647b699c8c8ada67b32ce7b115" "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] 6741f0d6c6f10cdb1651ae5596cb5dadb18e5954597c7378d3231fdc8e448b51
[INFO] running `Command { std: "docker" "start" "-a" "6741f0d6c6f10cdb1651ae5596cb5dadb18e5954597c7378d3231fdc8e448b51", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.23
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling uuid v0.8.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]    Compiling type-uuid-derive v0.1.2
[INFO] [stderr]     Checking type-uuid v0.1.2
[INFO] [stderr]     Checking ron v0.4.2
[INFO] [stderr]     Checking serde_dyn v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.42s
[INFO] running `Command { std: "docker" "inspect" "6741f0d6c6f10cdb1651ae5596cb5dadb18e5954597c7378d3231fdc8e448b51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6741f0d6c6f10cdb1651ae5596cb5dadb18e5954597c7378d3231fdc8e448b51", kill_on_drop: false }`
[INFO] [stdout] 6741f0d6c6f10cdb1651ae5596cb5dadb18e5954597c7378d3231fdc8e448b51