[INFO] fetching crate impl-serde 0.3.1...
[INFO] checking impl-serde-0.3.1 against beta for pr-78714
[INFO] extracting crate impl-serde 0.3.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate impl-serde 0.3.1 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate impl-serde 0.3.1
[INFO] finished tweaking crates.io crate impl-serde 0.3.1
[INFO] tweaked toml for crates.io crate impl-serde 0.3.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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" "+beta" "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] 8f3022ad43aa0a5b9780983edef95d8004b89895c44c424a2692d98f1220be6d
[INFO] running `Command { std: "docker" "start" "-a" "8f3022ad43aa0a5b9780983edef95d8004b89895c44c424a2692d98f1220be6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f3022ad43aa0a5b9780983edef95d8004b89895c44c424a2692d98f1220be6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f3022ad43aa0a5b9780983edef95d8004b89895c44c424a2692d98f1220be6d", kill_on_drop: false }`
[INFO] [stdout] 8f3022ad43aa0a5b9780983edef95d8004b89895c44c424a2692d98f1220be6d
[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" "+beta" "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] 335633d6fdb6e16053178364d0a7aba0d6da2fc83834fcd4bbfeea0fc270ad20
[INFO] running `Command { std: "docker" "start" "-a" "335633d6fdb6e16053178364d0a7aba0d6da2fc83834fcd4bbfeea0fc270ad20", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking uint v0.8.5
[INFO] [stderr]     Checking serde_json v1.0.59
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking impl-serde v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking csv v1.1.4
[INFO] [stderr]     Checking tinytemplate v1.1.0
[INFO] [stderr]     Checking criterion v0.3.3
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.59s
[INFO] running `Command { std: "docker" "inspect" "335633d6fdb6e16053178364d0a7aba0d6da2fc83834fcd4bbfeea0fc270ad20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "335633d6fdb6e16053178364d0a7aba0d6da2fc83834fcd4bbfeea0fc270ad20", kill_on_drop: false }`
[INFO] [stdout] 335633d6fdb6e16053178364d0a7aba0d6da2fc83834fcd4bbfeea0fc270ad20