[INFO] crate mdbook 0.3.7 is already in cache
[INFO] checking mdbook-0.3.7 against master#783139bd8fc3b94fac9a1bf81bba2c506e8221b6 for pr-72644
[INFO] extracting crate mdbook 0.3.7 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate mdbook 0.3.7 on toolchain 783139bd8fc3b94fac9a1bf81bba2c506e8221b6
[INFO] running `"/workspace/cargo-home/bin/cargo" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mdbook 0.3.7
[INFO] finished tweaking crates.io crate mdbook 0.3.7
[INFO] tweaked toml for crates.io crate mdbook 0.3.7 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate mdbook 0.3.7 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "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] 401412c63c52bae869ce1bc55224385f08e31e46d20053ab5c495f4cf1e814be
[INFO] running `"docker" "start" "-a" "401412c63c52bae869ce1bc55224385f08e31e46d20053ab5c495f4cf1e814be"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking new_debug_unreachable v1.0.3
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling cc v1.0.47
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling ucd-trie v0.1.2
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]    Compiling pulldown-cmark v0.6.1
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]     Checking termcolor v1.0.5
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking strum v0.15.0
[INFO] [stderr]     Checking open v1.3.2
[INFO] [stderr]     Checking bit-vec v0.5.1
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling unicase v2.5.1
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking futf v0.1.4
[INFO] [stderr]    Compiling pest v2.1.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking walkdir v2.2.9
[INFO] [stderr]     Checking itertools v0.8.1
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]     Checking bit-set v0.5.1
[INFO] [stderr]     Checking gitignore v1.0.6
[INFO] [stderr]     Checking tendril v0.4.1
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]    Compiling darling_core v0.8.6
[INFO] [stderr]    Compiling strum_macros v0.15.0
[INFO] [stderr]    Compiling html5ever v0.23.0
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking num_cpus v1.11.0
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking filetime v0.2.8
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking unicode-normalization v0.1.9
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling pest_meta v2.1.2
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking sha-1 v0.8.1
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling mime_guess v1.8.7
[INFO] [stderr]     Checking notify v4.0.14
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking ws v0.9.1
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]    Compiling darling_macro v0.8.6
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]     Checking toml v0.5.5
[INFO] [stderr]    Compiling darling v0.8.6
[INFO] [stderr]    Compiling toml-query_derive v0.9.0
[INFO] [stderr]     Checking iron v0.6.1
[INFO] [stderr]     Checking mount v0.4.0
[INFO] [stderr]     Checking staticfile v0.5.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling pest_generator v2.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]    Compiling html5ever v0.24.1
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking handlebars v3.0.0
[INFO] [stderr]     Checking failure v0.1.7
[INFO] [stderr]     Checking toml-query v0.9.2
[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 select v0.4.3
[INFO] [stderr]     Checking ammonia v3.0.0
[INFO] [stderr]     Checking mdbook v0.3.7 (/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 (in Nightly builds, run with -Z 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 (in Nightly builds, run with -Z 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 (in Nightly builds, run with -Z 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 (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 46s
[INFO] running `"docker" "inspect" "401412c63c52bae869ce1bc55224385f08e31e46d20053ab5c495f4cf1e814be"`
[INFO] running `"docker" "rm" "-f" "401412c63c52bae869ce1bc55224385f08e31e46d20053ab5c495f4cf1e814be"`
[INFO] [stdout] 401412c63c52bae869ce1bc55224385f08e31e46d20053ab5c495f4cf1e814be