[INFO] updating cached repository https://github.com/codeandplay/rust_in_action_examples
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eeb4d1a40dd3445150dec6122f9a2f2011da65ae
[INFO] documenting codeandplay/rust_in_action_examples/eeb4d1a40dd3445150dec6122f9a2f2011da65ae against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodeandplay%2Frust_in_action_examples" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/codeandplay/rust_in_action_examples on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/codeandplay/rust_in_action_examples
[INFO] finished tweaking git repo https://github.com/codeandplay/rust_in_action_examples
[INFO] tweaked toml for git repo https://github.com/codeandplay/rust_in_action_examples written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/codeandplay/rust_in_action_examples already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ecae84dc812a235073297cc637ccd7a7b92ec70d4609bc67225f522bd3f50ce3
[INFO] running `Command { std: "docker" "start" "-a" "ecae84dc812a235073297cc637ccd7a7b92ec70d4609bc67225f522bd3f50ce3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ecae84dc812a235073297cc637ccd7a7b92ec70d4609bc67225f522bd3f50ce3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecae84dc812a235073297cc637ccd7a7b92ec70d4609bc67225f522bd3f50ce3", kill_on_drop: false }`
[INFO] [stdout] ecae84dc812a235073297cc637ccd7a7b92ec70d4609bc67225f522bd3f50ce3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7c7487872eb8e40387f8d5c5b927ea27d91c346a7f97f7fa9f742b7c97c4400
[INFO] running `Command { std: "docker" "start" "-a" "a7c7487872eb8e40387f8d5c5b927ea27d91c346a7f97f7fa9f742b7c97c4400", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]  Documenting example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unknown lint: `dead_close`
[INFO] [stdout]  --> src/bin/3_22_implementing_display.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![allow(dead_close)]
[INFO] [stdout]   |          ^^^^^^^^^^ help: did you mean: `dead_code`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 3_14_error_handle_with_result src/bin/3_14_error_handle_with_result.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=a16d718d0ab5a52e -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 4_24_wrap_type_with_rc_refcell src/bin/4_24_wrap_type_with_rc_refcell.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f22a55b87a131301 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2_23_generic src/bin/2_23_generic.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f817c3a4ab1f55c7 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 4_9_return_ownership src/bin/4_9_return_ownership.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=4fbc45ead5677bb4 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2_27_array src/bin/2_27_array.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=a81ba8c091848f2b -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2_14_match src/bin/2_14_match.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=2562f666d68dd4fb -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 5_17_implement_q7_format src/bin/5_17_implement_q7_format.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=5d918628cab03fd0 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 3_11_defining_files_define_method src/bin/3_11_defining_files_define_method.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=40159e5e7bc5aae3 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 4_20_derive_copy_for_type src/bin/4_20_derive_copy_for_type.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=ea43fa9c93441f43 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 4_23_wrap_type_with_rc src/bin/4_23_wrap_type_with_rc.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=bc16454e2cdfab51 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 5_26_cpu_adder src/bin/5_26_cpu_adder.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=ab28cdd7dd9c125b -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 5_27_multiple_instructions src/bin/5_27_multiple_instructions.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=ece25912cf2ce32d -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2_12_loop_iterator_own src/bin/2_12_loop_iterator_own.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=0bbcba4a650e4032 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 5_7_endianness src/bin/5_7_endianness.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=993edd382cb15adc -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 5_20_float_from_byte src/bin/5_20_float_from_byte.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=5194382d3a35d2e3 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 1_10_store_data src/bin/1_10_store_data.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=7a366a99db5af893 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 5_3_inpect_float_bits_by_interpreting_as_integer src/bin/5_3_inpect_float_bits_by_interpreting_as_integer.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=267f56871934474b -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 5_4_incrementing_an_integer_past_its_range src/bin/5_4_incrementing_an_integer_past_its_range.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=20438394b643721c -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2_13_break_inner_loop src/bin/2_13_break_inner_loop.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=9a5770df13da9de2 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2_26_search_string src/bin/2_26_search_string.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=8cdda8d53f5b22d9 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2_2_float_number src/bin/2_2_float_number.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=aaa62519885c9da7 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 5_36_cpu_calling_function src/bin/5_36_cpu_calling_function.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=c2334c3b7739f580 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 4_17_avoid_ownership_issue_with_shortlived_variable src/bin/4_17_avoid_ownership_issue_with_shortlived_variable.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=d45bf95defe1ccaf -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 3_19_read_trait src/bin/3_19_read_trait.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f8f9d38676799bb7 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 3_10_defining_files_new_fn src/bin/3_10_defining_files_new_fn.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=4b7837b72d20fb97 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 3_22_implementing_display src/bin/3_22_implementing_display.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=51c4abbb0db894a5 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 4_4_ownership_moved src/bin/4_4_ownership_moved.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=35d0af465dc1e7e9 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 3_9_not_quite_file src/bin/3_9_not_quite_file.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=7fc32951b196d5e1 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 4_16_avoid_ownership_issue_with_reference src/bin/4_16_avoid_ownership_issue_with_reference.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=5a6961fde1f02f3c -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 1_9_borrow_after_move src/bin/1_9_borrow_after_move.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=0f9d44447486d35e -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2_11_loop_iterator src/bin/2_11_loop_iterator.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=24d13d3eaaf99f4f -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 5_8_deconstruct_float_num src/bin/5_8_deconstruct_float_num.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=26254713d6b97189 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 5_6_impossible_addition src/bin/5_6_impossible_addition.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=a228e8d486c916ba -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2_19_lifetime src/bin/2_19_lifetime.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=7beb5035ab468e4e -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 5_2_same_bits_for_different_things src/bin/5_2_same_bits_for_different_things.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=24cbad5472075e4c -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name example src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=ea3e64ec3c510be2 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2_38_read_file src/bin/2_38_read_file.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=1d952b51c50a76c0 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2_3_float_number_tolerance src/bin/2_3_float_number_tolerance.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=97d639d0f443fa81 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2_10_loop_through_aray src/bin/2_10_loop_through_aray.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=b39b3c5ba18b10c2 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 1_process_csv src/bin/1_process_csv.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=0b89546aed558db6 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2_1_number src/bin/2_1_number.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=461b3bbcb6c6a4bc -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 1_7_data_race src/bin/1_7_data_race.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=5633910aaf62f8a6 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 1_6_dangling_pointer src/bin/1_6_dangling_pointer.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=7fd5d3651adc2e9a -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `example`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2_5_num_crate src/bin/2_5_num_crate.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=b12b70c9ef17c2c2 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-dedb58c355cb392d.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-bc3d236763400285.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3ee3ce6c86860045.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4e513b42165a7e7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "a7c7487872eb8e40387f8d5c5b927ea27d91c346a7f97f7fa9f742b7c97c4400", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7c7487872eb8e40387f8d5c5b927ea27d91c346a7f97f7fa9f742b7c97c4400", kill_on_drop: false }`
[INFO] [stdout] a7c7487872eb8e40387f8d5c5b927ea27d91c346a7f97f7fa9f742b7c97c4400