[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]    6a94492..2f59943  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2f59943c04f0aa204a9238d6a699ba9cc06c88d9
[INFO] checking rust-lang-nursery/mdBook against try#d27c6c6a469a28343396a8f3ac1c9d403aabda69 for pr-66037
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-lang-nursery%2FmdBook" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rust-lang-nursery/mdBook on toolchain d27c6c6a469a28343396a8f3ac1c9d403aabda69
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "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-9/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" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c92fedf561e12353078bb7630757ad13db832891dcaa567989867e0633d224cf
[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" "c92fedf561e12353078bb7630757ad13db832891dcaa567989867e0633d224cf"`
[INFO] [stderr]    Compiling pulldown-cmark v0.6.1
[INFO] [stderr]     Checking is-match v0.1.0
[INFO] [stderr]     Checking gitignore v1.0.6
[INFO] [stderr]    Compiling serde_json v1.0.41
[INFO] [stderr]     Checking hashbrown v0.5.0
[INFO] [stderr]     Checking toml v0.5.5
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking error-chain v0.12.1
[INFO] [stderr]    Compiling html5ever v0.24.1
[INFO] [stderr]     Checking ws v0.9.1
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]     Checking handlebars v2.0.2
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling mime_guess v1.8.7
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking iron v0.6.1
[INFO] [stderr]     Checking mount v0.4.0
[INFO] [stderr]     Checking staticfile v0.5.0
[INFO] [stderr]    Compiling darling_core v0.8.6
[INFO] [stderr]    Compiling markup5ever v0.9.0
[INFO] [stderr]    Compiling markup5ever v0.8.1
[INFO] [stderr]    Compiling html5ever v0.23.0
[INFO] [stderr]    Compiling strum_macros v0.15.0
[INFO] [stderr]    Compiling darling_macro v0.8.6
[INFO] [stderr]     Checking elasticlunr-rs v2.3.6
[INFO] [stderr]    Compiling darling v0.8.6
[INFO] [stderr]    Compiling toml-query_derive v0.9.0
[INFO] [stderr]     Checking toml-query v0.9.2
[INFO] [stderr]     Checking ammonia v3.0.0
[INFO] [stderr]     Checking select v0.4.3
[INFO] [stderr]     Checking mdbook v0.3.5 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:123:5
[INFO] [stderr]     |
[INFO] [stderr] 123 | /     error_chain! {
[INFO] [stderr] 124 | |         foreign_links {
[INFO] [stderr] 125 | |             Io(std::io::Error) #[doc = "A wrapper around `std::io::Error`"];
[INFO] [stderr] 126 | |             HandlebarsRender(handlebars::RenderError) #[doc = "Handlebars rendering failed"];
[INFO] [stderr] ...   |
[INFO] [stderr] 156 | |         }
[INFO] [stderr] 157 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:123:5
[INFO] [stderr]     |
[INFO] [stderr] 123 | /     error_chain! {
[INFO] [stderr] 124 | |         foreign_links {
[INFO] [stderr] 125 | |             Io(std::io::Error) #[doc = "A wrapper around `std::io::Error`"];
[INFO] [stderr] 126 | |             HandlebarsRender(handlebars::RenderError) #[doc = "Handlebars rendering failed"];
[INFO] [stderr] ...   |
[INFO] [stderr] 156 | |         }
[INFO] [stderr] 157 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:123:5
[INFO] [stderr]     |
[INFO] [stderr] 123 | /     error_chain! {
[INFO] [stderr] 124 | |         foreign_links {
[INFO] [stderr] 125 | |             Io(std::io::Error) #[doc = "A wrapper around `std::io::Error`"];
[INFO] [stderr] 126 | |             HandlebarsRender(handlebars::RenderError) #[doc = "Handlebars rendering failed"];
[INFO] [stderr] ...   |
[INFO] [stderr] 156 | |         }
[INFO] [stderr] 157 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:123:5
[INFO] [stderr]     |
[INFO] [stderr] 123 | /     error_chain! {
[INFO] [stderr] 124 | |         foreign_links {
[INFO] [stderr] 125 | |             Io(std::io::Error) #[doc = "A wrapper around `std::io::Error`"];
[INFO] [stderr] 126 | |             HandlebarsRender(handlebars::RenderError) #[doc = "Handlebars rendering failed"];
[INFO] [stderr] ...   |
[INFO] [stderr] 156 | |         }
[INFO] [stderr] 157 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 03s
[INFO] running `"docker" "inspect" "c92fedf561e12353078bb7630757ad13db832891dcaa567989867e0633d224cf"`
[INFO] running `"docker" "rm" "-f" "c92fedf561e12353078bb7630757ad13db832891dcaa567989867e0633d224cf"`
[INFO] [stdout] c92fedf561e12353078bb7630757ad13db832891dcaa567989867e0633d224cf