[INFO] fetching crate mdbook 0.3.1...
[INFO] checking mdbook-0.3.1 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate mdbook 0.3.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate mdbook 0.3.1 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mdbook 0.3.1
[INFO] finished tweaking crates.io crate mdbook 0.3.1
[INFO] tweaked toml for crates.io crate mdbook 0.3.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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=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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] 388515bf3cd8b55c3a0251c6673d61c0362c192123e8abeeb3e6ba1506c56cf0
[INFO] running `"docker" "start" "-a" "388515bf3cd8b55c3a0251c6673d61c0362c192123e8abeeb3e6ba1506c56cf0"`
[INFO] [stderr]    Compiling pulldown-cmark v0.5.3
[INFO] [stderr]     Checking strum v0.15.0
[INFO] [stderr]     Checking hashbrown v0.5.0
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling darling_core v0.8.6
[INFO] [stderr]    Compiling strum_macros v0.15.0
[INFO] [stderr]     Checking ws v0.8.1
[INFO] [stderr]     Checking handlebars v2.0.2
[INFO] [stderr]    Compiling string_cache v0.7.4
[INFO] [stderr]    Compiling markup5ever v0.8.1
[INFO] [stderr]    Compiling darling_macro v0.8.6
[INFO] [stderr]     Checking elasticlunr-rs v2.3.6
[INFO] [stderr]     Checking html5ever v0.23.0
[INFO] [stderr]    Compiling darling v0.8.6
[INFO] [stderr]    Compiling toml-query_derive v0.9.0
[INFO] [stderr]     Checking ammonia v2.1.2
[INFO] [stderr]     Checking select v0.4.3
[INFO] [stderr]     Checking toml-query v0.9.2
[INFO] [stderr]     Checking mdbook v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.73s
[INFO] running `"docker" "inspect" "388515bf3cd8b55c3a0251c6673d61c0362c192123e8abeeb3e6ba1506c56cf0"`
[INFO] running `"docker" "rm" "-f" "388515bf3cd8b55c3a0251c6673d61c0362c192123e8abeeb3e6ba1506c56cf0"`
[INFO] [stdout] 388515bf3cd8b55c3a0251c6673d61c0362c192123e8abeeb3e6ba1506c56cf0