[INFO] crate nu_plugin_average 0.14.0 is already in cache
[INFO] testing nu_plugin_average-0.14.0 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate nu_plugin_average 0.14.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate nu_plugin_average 0.14.0 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nu_plugin_average 0.14.0
[INFO] finished tweaking crates.io crate nu_plugin_average 0.14.0
[INFO] tweaked toml for crates.io crate nu_plugin_average 0.14.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate nu_plugin_average 0.14.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e2c5a5f00f9b3a7c75f57b98206e7a856a47d3320d2d35e34893b160b224af74
[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" "e2c5a5f00f9b3a7c75f57b98206e7a856a47d3320d2d35e34893b160b224af74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2c5a5f00f9b3a7c75f57b98206e7a856a47d3320d2d35e34893b160b224af74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2c5a5f00f9b3a7c75f57b98206e7a856a47d3320d2d35e34893b160b224af74", kill_on_drop: false }`
[INFO] [stdout] e2c5a5f00f9b3a7c75f57b98206e7a856a47d3320d2d35e34893b160b224af74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0548f037947678f9e8f46ed706ea231e8ebe5369a44614cd4848c49314b96d6
[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" "f0548f037947678f9e8f46ed706ea231e8ebe5369a44614cd4848c49314b96d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.20
[INFO] [stderr]    Compiling inventory v0.1.6
[INFO] [stderr]    Compiling byte-unit v3.0.3
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]    Compiling render-tree v0.1.1
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling shellexpand v2.0.0
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]    Compiling derive-new v0.5.8
[INFO] [stderr]    Compiling inventory-impl v0.1.6
[INFO] [stderr]    Compiling ghost v0.1.1
[INFO] [stderr]    Compiling ctor v0.1.14
[INFO] [stderr]    Compiling typetag-impl v0.1.4
[INFO] [stderr]    Compiling getset v0.1.0
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling serde_json v1.0.53
[INFO] [stderr]    Compiling language-reporting v0.4.0
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling rust-stemmers v1.2.0
[INFO] [stderr]    Compiling serde_yaml v0.8.12
[INFO] [stderr]    Compiling erased-serde v0.3.11
[INFO] [stderr]    Compiling serde_bytes v0.11.4
[INFO] [stderr]    Compiling chrono v0.4.11
[INFO] [stderr]    Compiling typetag v0.1.4
[INFO] [stderr]    Compiling bigdecimal v0.1.2
[INFO] [stderr]    Compiling nu-build v0.14.0
[INFO] [stderr]    Compiling natural v0.5.0
[INFO] [stderr]    Compiling nu-source v0.14.0
[INFO] [stderr]    Compiling nu-errors v0.14.0
[INFO] [stderr]    Compiling nu-protocol v0.14.0
[INFO] [stderr]    Compiling nu-value-ext v0.14.0
[INFO] [stderr]    Compiling nu-plugin v0.14.0
[INFO] [stderr]    Compiling nu_plugin_average v0.14.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `nu-plugin v0.14.0`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/nu-plugin-d628e12423a84daa/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" "f0548f037947678f9e8f46ed706ea231e8ebe5369a44614cd4848c49314b96d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0548f037947678f9e8f46ed706ea231e8ebe5369a44614cd4848c49314b96d6", kill_on_drop: false }`
[INFO] [stdout] f0548f037947678f9e8f46ed706ea231e8ebe5369a44614cd4848c49314b96d6