[INFO] crate termbook 1.4.2 is already in cache
[INFO] testing termbook-1.4.2 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate termbook 1.4.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate termbook 1.4.2 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 termbook 1.4.2
[INFO] finished tweaking crates.io crate termbook 1.4.2
[INFO] tweaked toml for crates.io crate termbook 1.4.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 1a1ae75744320e35a3f9d29f786f95d7f545d7f15bd9d82bed085d56b322263f
[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" "1a1ae75744320e35a3f9d29f786f95d7f545d7f15bd9d82bed085d56b322263f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a1ae75744320e35a3f9d29f786f95d7f545d7f15bd9d82bed085d56b322263f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a1ae75744320e35a3f9d29f786f95d7f545d7f15bd9d82bed085d56b322263f", kill_on_drop: false }`
[INFO] [stdout] 1a1ae75744320e35a3f9d29f786f95d7f545d7f15bd9d82bed085d56b322263f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 3757a610822f985a711b05f6272571115a76b6d73e637cf279e57f81c832a9e8
[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" "3757a610822f985a711b05f6272571115a76b6d73e637cf279e57f81c832a9e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling pulldown-cmark v0.6.1
[INFO] [stderr]    Compiling modifier v0.1.0
[INFO] [stderr]    Compiling sequence_trie v0.3.6
[INFO] [stderr]    Compiling pulldown-cmark v0.7.2
[INFO] [stderr]    Compiling is-match v0.1.0
[INFO] [stderr]    Compiling bytemuck v1.3.1
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]    Compiling line-wrap v0.1.1
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling onig_sys v69.1.0
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling gitignore v1.0.6
[INFO] [stderr]    Compiling typemap v0.3.3
[INFO] [stderr]    Compiling tendril v0.4.1
[INFO] [stderr]    Compiling phf v0.8.0
[INFO] [stderr]    Compiling term_size v0.3.2
[INFO] [stderr]    Compiling inotify-sys v0.1.3
[INFO] [stderr]    Compiling filetime v0.2.12
[INFO] [stderr]    Compiling gethostname v0.2.1
[INFO] [stderr]    Compiling string_cache v0.8.0
[INFO] [stderr]    Compiling deflate v0.8.6
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling plist v0.4.2
[INFO] [stderr]    Compiling plugin v0.2.6
[INFO] [stderr]    Compiling inotify v0.7.1
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]    Compiling globset v0.4.5
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling strum_macros v0.18.0
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling tiff v0.5.0
[INFO] [stderr]    Compiling clap v2.33.2
[INFO] [stderr]    Compiling notify v4.0.15
[INFO] [stderr]    Compiling ws v0.9.1
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling png v0.16.7
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.20
[INFO] [stderr]    Compiling pulldown-cmark-to-cmark v2.0.1
[INFO] [stderr]    Compiling mime_guess v1.8.8
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling markup5ever v0.10.0
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling chrono v0.4.13
[INFO] [stderr]    Compiling image v0.23.8
[INFO] [stderr]    Compiling iron v0.6.1
[INFO] [stderr]    Compiling elasticlunr-rs v2.3.9
[INFO] [stderr]    Compiling mount v0.4.0
[INFO] [stderr]    Compiling handlebars v3.3.0
[INFO] [stderr]    Compiling onig v4.3.3
[INFO] [stderr]    Compiling staticfile v0.5.0
[INFO] [stderr]    Compiling syntect v3.1.0
[INFO] [stderr]    Compiling darling_core v0.8.6
[INFO] [stderr]    Compiling xml5ever v0.16.1
[INFO] [stderr]    Compiling markup5ever_rcdom v0.1.0
[INFO] [stderr]    Compiling ammonia v3.1.0
[INFO] [stderr]    Compiling darling_macro v0.8.6
[INFO] [stderr]    Compiling mdcat v0.15.1
[INFO] [stderr]    Compiling darling v0.8.6
[INFO] [stderr]    Compiling toml-query_derive v0.9.2
[INFO] [stderr]    Compiling toml-query v0.9.2
[INFO] [stderr]    Compiling mdbook v0.3.7
[INFO] [stderr]    Compiling termbook v1.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0271]: type mismatch resolving `<std::vec::IntoIter<pulldown_cmark::Event<'_>> as std::iter::Iterator>::Item == pulldown_cmark::parse::Event<'_>`
[INFO] [stdout]    --> src/playback.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 |         push_tty(
[INFO] [stdout]     |         ^^^^^^^^ expected enum `pulldown_cmark::parse::Event`, found enum `pulldown_cmark::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 `mdcat::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] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3757a610822f985a711b05f6272571115a76b6d73e637cf279e57f81c832a9e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3757a610822f985a711b05f6272571115a76b6d73e637cf279e57f81c832a9e8", kill_on_drop: false }`
[INFO] [stdout] 3757a610822f985a711b05f6272571115a76b6d73e637cf279e57f81c832a9e8