[INFO] fetching crate arcstr 0.2.3...
[INFO] checking arcstr-0.2.3 against try#075992eda207e1647b699c8c8ada67b32ce7b115 for pr-77271
[INFO] extracting crate arcstr 0.2.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate arcstr 0.2.3 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 arcstr 0.2.3
[INFO] finished tweaking crates.io crate arcstr 0.2.3
[INFO] tweaked toml for crates.io crate arcstr 0.2.3 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] [stderr]     Blocking waiting for file lock on package cache
[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] [stdout] 05bc13e037bb66548bd35267c9863edd7baf1eb4f51c1f02815c93467ae006ae
[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" "05bc13e037bb66548bd35267c9863edd7baf1eb4f51c1f02815c93467ae006ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05bc13e037bb66548bd35267c9863edd7baf1eb4f51c1f02815c93467ae006ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05bc13e037bb66548bd35267c9863edd7baf1eb4f51c1f02815c93467ae006ae", kill_on_drop: false }`
[INFO] [stdout] 05bc13e037bb66548bd35267c9863edd7baf1eb4f51c1f02815c93467ae006ae
[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] d32502075e4eaf9d21d4352231f97c0f5dfed36e437d5202e42e49b3352899d0
[INFO] running `Command { std: "docker" "start" "-a" "d32502075e4eaf9d21d4352231f97c0f5dfed36e437d5202e42e49b3352899d0", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking arcstr v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]     Checking serde_test v1.0.116
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.59s
[INFO] running `Command { std: "docker" "inspect" "d32502075e4eaf9d21d4352231f97c0f5dfed36e437d5202e42e49b3352899d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d32502075e4eaf9d21d4352231f97c0f5dfed36e437d5202e42e49b3352899d0", kill_on_drop: false }`
[INFO] [stdout] d32502075e4eaf9d21d4352231f97c0f5dfed36e437d5202e42e49b3352899d0