[INFO] updating cached repository https://github.com/rust-lang-nursery/mdBook
[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] [stderr] From https://github.com/rust-lang-nursery/mdBook
[INFO] [stderr]  + 2658b8c...09760b3 gh-pages   -> gh-pages  (forced update)
[INFO] [stderr]    a592da3..fcf2d7a  master     -> master
[INFO] [stderr]  * [new tag]         v0.3.2     -> v0.3.2
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fcf2d7a03b9e730f83f1ab16e99ba5fe0e541ab1
[INFO] checking rust-lang-nursery/mdBook against master#446e5e57b667c841ba3ebb4b41b44fb98bd3af4b for pr-65294
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-lang-nursery%2FmdBook" "/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/rust-lang-nursery/mdBook on toolchain 446e5e57b667c841ba3ebb4b41b44fb98bd3af4b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+446e5e57b667c841ba3ebb4b41b44fb98bd3af4b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/rust-lang-nursery/mdBook
[INFO] finished tweaking git repo https://github.com/rust-lang-nursery/mdBook
[INFO] tweaked toml for git repo https://github.com/rust-lang-nursery/mdBook written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/rust-lang-nursery/mdBook already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+446e5e57b667c841ba3ebb4b41b44fb98bd3af4b" "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" "+446e5e57b667c841ba3ebb4b41b44fb98bd3af4b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d0f5f77061283e4869c7a02ed2dbd7e4a2407ad911095d4e17efb151551b69b3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "d0f5f77061283e4869c7a02ed2dbd7e4a2407ad911095d4e17efb151551b69b3"`
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]     Checking is-match v0.1.0
[INFO] [stderr]     Checking gitignore v1.0.6
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling serde_json v1.0.40
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking pulldown-cmark v0.5.3
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking notify v4.0.13
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking sha-1 v0.8.1
[INFO] [stderr]     Checking ws v0.9.0
[INFO] [stderr]    Compiling pest_generator v2.1.1
[INFO] [stderr]    Compiling darling_core v0.8.6
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking handlebars v2.0.2
[INFO] [stderr]    Compiling html5ever v0.24.0
[INFO] [stderr]    Compiling html5ever v0.23.0
[INFO] [stderr]    Compiling strum_macros v0.15.0
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]    Compiling darling_macro v0.8.6
[INFO] [stderr]    Compiling darling v0.8.6
[INFO] [stderr]    Compiling toml-query_derive v0.9.0
[INFO] [stderr]    Compiling markup5ever v0.9.0
[INFO] [stderr]    Compiling markup5ever v0.8.1
[INFO] [stderr]     Checking elasticlunr-rs v2.3.6
[INFO] [stderr]     Checking toml-query v0.9.2
[INFO] [stderr]     Checking select v0.4.3
[INFO] [stderr]     Checking ammonia v3.0.0
[INFO] [stderr]     Checking mdbook v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 43s
[INFO] running `"docker" "inspect" "d0f5f77061283e4869c7a02ed2dbd7e4a2407ad911095d4e17efb151551b69b3"`
[INFO] running `"docker" "rm" "-f" "d0f5f77061283e4869c7a02ed2dbd7e4a2407ad911095d4e17efb151551b69b3"`
[INFO] [stdout] d0f5f77061283e4869c7a02ed2dbd7e4a2407ad911095d4e17efb151551b69b3