[INFO] fetching crate nu_plugin_sum 0.11.0...
[INFO] testing nu_plugin_sum-0.11.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate nu_plugin_sum 0.11.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate nu_plugin_sum 0.11.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nu_plugin_sum 0.11.0
[INFO] finished tweaking crates.io crate nu_plugin_sum 0.11.0
[INFO] tweaked toml for crates.io crate nu_plugin_sum 0.11.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate nu_plugin_sum 0.11.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] 73be2567f6c90a90fd1593cb11787065232c5d9260f94737115e001a793e3b1b
[INFO] running `Command { std: "docker" "start" "-a" "73be2567f6c90a90fd1593cb11787065232c5d9260f94737115e001a793e3b1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73be2567f6c90a90fd1593cb11787065232c5d9260f94737115e001a793e3b1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73be2567f6c90a90fd1593cb11787065232c5d9260f94737115e001a793e3b1b", kill_on_drop: false }`
[INFO] [stdout] 73be2567f6c90a90fd1593cb11787065232c5d9260f94737115e001a793e3b1b
[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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--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] 07f26b1a06980e3d042e6b6ac353635e9f2a22824a295cc9dd091e78c9798165
[INFO] running `Command { std: "docker" "start" "-a" "07f26b1a06980e3d042e6b6ac353635e9f2a22824a295cc9dd091e78c9798165", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling static_assertions v0.3.4
[INFO] [stderr]    Compiling linked-hash-map v0.5.2
[INFO] [stderr]    Compiling regex-syntax v0.6.16
[INFO] [stderr]    Compiling bytecount v0.3.2
[INFO] [stderr]    Compiling typed-arena v1.7.0
[INFO] [stderr]    Compiling dtoa v0.4.5
[INFO] [stderr]    Compiling rust-ini v0.13.0
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling query_interface v0.3.5
[INFO] [stderr]    Compiling natural v0.3.0
[INFO] [stderr]    Compiling byte-unit v3.0.3
[INFO] [stderr]    Compiling nom v5.1.1
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling serde_test v0.8.23
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling tint v1.0.1
[INFO] [stderr]    Compiling yaml-rust v0.4.3
[INFO] [stderr]    Compiling pretty v0.5.2
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling lexical-core v0.6.7
[INFO] [stderr]    Compiling linked-hash-map v0.3.0
[INFO] [stderr]    Compiling render-tree v0.1.1
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling dirs-sys v0.3.4
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling directories v1.0.2
[INFO] [stderr]    Compiling isatty v0.1.9
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling shellexpand v1.1.1
[INFO] [stderr]    Compiling regex v1.3.4
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling ordered-float v1.0.2
[INFO] [stderr]    Compiling serde-hjson v0.8.2
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling nom_locate v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling derive-new v0.5.8
[INFO] [stderr]    Compiling nom-tracable-macros v0.4.1
[INFO] [stderr]    Compiling ghost v0.1.1
[INFO] [stderr]    Compiling getset v0.0.9
[INFO] [stderr]    Compiling ctor v0.1.13
[INFO] [stderr]    Compiling inventory-impl v0.1.5
[INFO] [stderr]    Compiling typetag-impl v0.1.4
[INFO] [stderr]    Compiling enumflags2_derive v0.6.2
[INFO] [stderr]    Compiling enumflags2 v0.6.2
[INFO] [stderr]    Compiling inventory v0.1.5
[INFO] [stderr]    Compiling nom-tracable v0.4.1
[INFO] [stderr]    Compiling serde_json v1.0.48
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling language-reporting v0.4.0
[INFO] [stderr]    Compiling erased-serde v0.3.10
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling serde_yaml v0.8.11
[INFO] [stderr]    Compiling chrono v0.4.11
[INFO] [stderr]    Compiling serde_bytes v0.11.3
[INFO] [stderr]    Compiling serde-value v0.5.3
[INFO] [stderr]    Compiling typetag v0.1.4
[INFO] [stderr]    Compiling bigdecimal v0.1.0
[INFO] [stderr]    Compiling pretty_env_logger v0.3.1
[INFO] [stderr]    Compiling nu-build v0.11.0
[INFO] [stderr]    Compiling config v0.9.3
[INFO] [stderr]    Compiling nu-source v0.11.0
[INFO] [stderr]    Compiling nu-errors v0.11.0
[INFO] [stderr]    Compiling nu-protocol v0.11.0
[INFO] [stderr]    Compiling nu-parser v0.11.0
[INFO] [stderr]    Compiling nu-value-ext v0.11.0
[INFO] [stderr]    Compiling nu-plugin v0.11.0
[INFO] [stderr]    Compiling nu_plugin_sum v0.11.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling ptree v0.2.1
[INFO] [stderr] error: failed to run custom build command for `nu-protocol v0.11.0`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/nu-protocol-4072b2360e0e7e64/build-script-build` (exit code: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   Error: Error("EOF while parsing a value", line: 1, column: 0)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "07f26b1a06980e3d042e6b6ac353635e9f2a22824a295cc9dd091e78c9798165", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07f26b1a06980e3d042e6b6ac353635e9f2a22824a295cc9dd091e78c9798165", kill_on_drop: false }`
[INFO] [stdout] 07f26b1a06980e3d042e6b6ac353635e9f2a22824a295cc9dd091e78c9798165