[INFO] updating cached repository https://github.com/Byron/termbook
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b1ee7ea267a71f5e2af759c583e9376fb245c643
[INFO] checking Byron/termbook against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FByron%2Ftermbook" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Byron/termbook on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Byron/termbook already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-4/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[INFO] the lockfile is outdated, regenerating it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 `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0397e6321d92dc195bb0372d5667cda17563c0338d585409cd3f3a4af52bcb9c
[INFO] running `"docker" "start" "-a" "0397e6321d92dc195bb0372d5667cda17563c0338d585409cd3f3a4af52bcb9c"`
[INFO] [stderr]    Compiling pulldown-cmark v0.6.1
[INFO] [stderr]    Compiling pulldown-cmark v0.7.0
[INFO] [stderr]     Checking sequence_trie v0.3.6
[INFO] [stderr]     Checking strum v0.15.0
[INFO] [stderr]    Compiling pulldown-cmark v0.5.3
[INFO] [stderr]     Checking line-wrap v0.1.1
[INFO] [stderr]    Compiling onig_sys v69.1.0
[INFO] [stderr]     Checking gitignore v1.0.6
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking gethostname v0.2.1
[INFO] [stderr]     Checking deflate v0.8.4
[INFO] [stderr]     Checking string_cache v0.8.0
[INFO] [stderr]     Checking plist v0.4.2
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking globset v0.4.5
[INFO] [stderr]    Compiling darling_core v0.8.6
[INFO] [stderr]    Compiling strum_macros v0.15.0
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking png v0.16.2
[INFO] [stderr]     Checking ws v0.9.1
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking pulldown-cmark-to-cmark v2.0.1
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking pulldown-cmark-to-cmark v1.2.4
[INFO] [stderr]    Compiling markup5ever v0.10.0
[INFO] [stderr]     Checking iron v0.6.1
[INFO] [stderr]     Checking mount v0.4.0
[INFO] [stderr]     Checking onig v4.3.3
[INFO] [stderr]     Checking staticfile v0.5.0
[INFO] [stderr]     Checking handlebars v3.0.1
[INFO] [stderr]     Checking elasticlunr-rs v2.3.6
[INFO] [stderr]     Checking syntect v3.1.0
[INFO] [stderr]    Compiling darling_macro v0.8.6
[INFO] [stderr]     Checking jpeg-decoder v0.1.18
[INFO] [stderr]     Checking image v0.23.3
[INFO] [stderr]    Compiling darling v0.8.6
[INFO] [stderr]     Checking xml5ever v0.16.1
[INFO] [stderr]    Compiling toml-query_derive v0.9.2
[INFO] [stderr]     Checking toml-query v0.9.2
[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 mdcat v0.15.1
[INFO] [stderr]     Checking termbook v1.4.2
[INFO] [stderr] error[E0271]: type mismatch resolving `<std::vec::IntoIter<pulldown_cmark::Event<'_>> as std::iter::Iterator>::Item == pulldown_cmark::parse::Event<'_>`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/termbook-1.4.2/src/playback.rs:141:9
[INFO] [stderr]     |
[INFO] [stderr] 141 |         push_tty(
[INFO] [stderr]     |         ^^^^^^^^ expected enum `pulldown_cmark::parse::Event`, found enum `pulldown_cmark::Event`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mdcat-0.15.1/src/lib.rs:71:17
[INFO] [stderr]     |
[INFO] [stderr] 71  |     I: Iterator<Item = Event<'e>>,
[INFO] [stderr]     |                 ---------------- required by this bound in `mdcat::push_tty`
[INFO] [stderr]     |
[INFO] [stderr]     = note: perhaps two different versions of crate `pulldown_cmark` are being used?
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0271`.
[INFO] [stderr] error: could not compile `termbook`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "0397e6321d92dc195bb0372d5667cda17563c0338d585409cd3f3a4af52bcb9c"`
[INFO] running `"docker" "rm" "-f" "0397e6321d92dc195bb0372d5667cda17563c0338d585409cd3f3a4af52bcb9c"`
[INFO] [stdout] 0397e6321d92dc195bb0372d5667cda17563c0338d585409cd3f3a4af52bcb9c