[INFO] cloning repository https://github.com/Byron/termbook
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Byron/termbook" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FByron%2Ftermbook", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FByron%2Ftermbook'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fdcf2497b21f2f999215b89d3cd0b2299dc43e8f
[INFO] checking Byron/termbook against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FByron%2Ftermbook" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Byron/termbook 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 git repo https://github.com/Byron/termbook
[INFO] removed workspace from git repo https://github.com/Byron/termbook
[INFO] removed path dependency termbook from git repo https://github.com/Byron/termbook
[INFO] finished tweaking git repo https://github.com/Byron/termbook
[INFO] tweaked toml for git repo https://github.com/Byron/termbook written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Byron/termbook already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-6/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0414c1bce1a82fc4ba0cd5ca62b752ba6eb6417517a34da6faa625f1a26db6a6
[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" "0414c1bce1a82fc4ba0cd5ca62b752ba6eb6417517a34da6faa625f1a26db6a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0414c1bce1a82fc4ba0cd5ca62b752ba6eb6417517a34da6faa625f1a26db6a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0414c1bce1a82fc4ba0cd5ca62b752ba6eb6417517a34da6faa625f1a26db6a6", kill_on_drop: false }`
[INFO] [stdout] 0414c1bce1a82fc4ba0cd5ca62b752ba6eb6417517a34da6faa625f1a26db6a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 038ff028b2fbd25f302630c861eb51f31d873969df173ad4b52d567a7bbe6244
[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" "038ff028b2fbd25f302630c861eb51f31d873969df173ad4b52d567a7bbe6244", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling pulldown-cmark v0.6.1
[INFO] [stderr]    Compiling pulldown-cmark v0.7.2
[INFO] [stderr]     Checking is-match v0.1.0
[INFO] [stderr]    Compiling onig_sys v69.1.0
[INFO] [stderr]     Checking gitignore v1.0.7
[INFO] [stderr]     Checking term_size v0.3.2
[INFO] [stderr]     Checking gethostname v0.2.1
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking backtrace v0.3.54
[INFO] [stderr]     Checking flate2 v1.0.19
[INFO] [stderr]     Checking plist v0.4.2
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]    Compiling darling_core v0.8.6
[INFO] [stderr]     Checking globset v0.4.6
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling strum_macros v0.18.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking notify v4.0.15
[INFO] [stderr]     Checking ws v0.9.1
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking error-chain v0.12.4
[INFO] [stderr]     Checking iron v0.6.1
[INFO] [stderr]     Checking mount v0.4.0
[INFO] [stderr]     Checking staticfile v0.5.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking pulldown-cmark-to-cmark v2.0.1
[INFO] [stderr]     Checking pulldown-cmark-to-cmark v4.0.2
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking handlebars v3.5.1
[INFO] [stderr]    Compiling darling_macro v0.8.6
[INFO] [stderr]     Checking onig v4.3.3
[INFO] [stderr]    Compiling darling v0.8.6
[INFO] [stderr]    Compiling toml-query_derive v0.9.2
[INFO] [stderr]    Compiling markup5ever v0.10.0
[INFO] [stderr]     Checking syntect v3.1.0
[INFO] [stderr]     Checking elasticlunr-rs v2.3.9
[INFO] [stderr]     Checking toml-query v0.9.2
[INFO] [stderr]     Checking mdcat v0.15.1
[INFO] [stderr]     Checking xml5ever v0.16.1
[INFO] [stderr]     Checking markup5ever_rcdom v0.1.0
[INFO] [stderr]     Checking ammonia v3.1.0
[INFO] [stderr]     Checking mdbook v0.3.7
[INFO] [stderr]     Checking termbook v1.4.2
[INFO] [stdout] error[E0271]: type mismatch resolving `<std::vec::IntoIter<Event<'_>> as Iterator>::Item == pulldown_cmark::parse::Event<'_>`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/termbook-1.4.2/src/playback.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 |         push_tty(
[INFO] [stdout]     |         ^^^^^^^^ expected enum `pulldown_cmark::parse::Event`, found enum `Event`
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mdcat-0.15.1/src/lib.rs:71:17
[INFO] [stdout]     |
[INFO] [stdout] 71  |     I: Iterator<Item = Event<'e>>,
[INFO] [stdout]     |                 ---------------- required by this bound in `push_tty`
[INFO] [stdout]     |
[INFO] [stdout]     = note: perhaps two different versions of crate `pulldown_cmark` are being used?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0271`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `termbook`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "038ff028b2fbd25f302630c861eb51f31d873969df173ad4b52d567a7bbe6244", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "038ff028b2fbd25f302630c861eb51f31d873969df173ad4b52d567a7bbe6244", kill_on_drop: false }`
[INFO] [stdout] 038ff028b2fbd25f302630c861eb51f31d873969df173ad4b52d567a7bbe6244