[INFO] fetching crate nickel_view 0.1.0...
[INFO] testing nickel_view-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate nickel_view 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate nickel_view 0.1.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nickel_view 0.1.0
[INFO] finished tweaking crates.io crate nickel_view 0.1.0
[INFO] tweaked toml for crates.io crate nickel_view 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unsafe-any v0.4.2
[INFO] [stderr]   Downloaded modifier v0.1.0
[INFO] [stderr]   Downloaded typemap v0.3.3
[INFO] [stderr]   Downloaded cookie v0.2.5
[INFO] [stderr]   Downloaded solicit v0.4.4
[INFO] [stderr]   Downloaded groupable v0.2.0
[INFO] [stderr]   Downloaded traitobject v0.0.1
[INFO] [stderr]   Downloaded hpack v0.2.0
[INFO] [stderr]   Downloaded lazy_static v0.1.16
[INFO] [stderr]   Downloaded plugin v0.2.6
[INFO] [stderr]   Downloaded nickel v0.9.0
[INFO] [stderr]   Downloaded rustc-serialize v0.3.24
[INFO] [stderr]   Downloaded mustache v0.6.3
[INFO] [stderr]   Downloaded hyper v0.9.18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ad28982c1d883d551eff0ddd7acc2c103bd2de80e2f5dcb0bd09b7ba737b940
[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" "8ad28982c1d883d551eff0ddd7acc2c103bd2de80e2f5dcb0bd09b7ba737b940", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ad28982c1d883d551eff0ddd7acc2c103bd2de80e2f5dcb0bd09b7ba737b940", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ad28982c1d883d551eff0ddd7acc2c103bd2de80e2f5dcb0bd09b7ba737b940", kill_on_drop: false }`
[INFO] [stdout] 8ad28982c1d883d551eff0ddd7acc2c103bd2de80e2f5dcb0bd09b7ba737b940
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7afd5dfc8e3ba0d60f75c365c673d93a9bec88a692837bed9b4650ba060fe972
[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" "7afd5dfc8e3ba0d60f75c365c673d93a9bec88a692837bed9b4650ba060fe972", kill_on_drop: false }`
[INFO] [stderr]    Compiling groupable v0.2.0
[INFO] [stderr]    Compiling mustache v0.6.3
[INFO] [stderr]    Compiling cookie v0.2.5
[INFO] [stdout] error: enum is private and its variants cannot be re-exported
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mustache-0.6.3/src/parser.rs:4:9
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub use self::ParserState::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 | enum ParserState { TEXT, OTAG, TAG, CTAG }
[INFO] [stdout]    | ---------------- help: consider making the enum public: `pub enum ParserState`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: enum is private and its variants cannot be re-exported
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mustache-0.6.3/src/parser.rs:5:9
[INFO] [stdout]    |
[INFO] [stdout] 5  | pub use self::TokenClass::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 | enum TokenClass {
[INFO] [stdout]    | --------------- help: consider making the enum public: `pub enum TokenClass`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mustache`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "7afd5dfc8e3ba0d60f75c365c673d93a9bec88a692837bed9b4650ba060fe972", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7afd5dfc8e3ba0d60f75c365c673d93a9bec88a692837bed9b4650ba060fe972", kill_on_drop: false }`
[INFO] [stdout] 7afd5dfc8e3ba0d60f75c365c673d93a9bec88a692837bed9b4650ba060fe972