[INFO] cloning repository https://github.com/sh0623k/coding_interview
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sh0623k/coding_interview" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsh0623k%2Fcoding_interview", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsh0623k%2Fcoding_interview'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ad2a675ba51f91fb104e2272a58badfd5bfa77bc
[INFO] documenting sh0623k/coding_interview 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%2Fsh0623k%2Fcoding_interview" "/workspace/builds/worker-29/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-29/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sh0623k/coding_interview 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/sh0623k/coding_interview
[INFO] finished tweaking git repo https://github.com/sh0623k/coding_interview
[INFO] tweaked toml for git repo https://github.com/sh0623k/coding_interview written to /workspace/builds/worker-29/source/Cargo.toml
[INFO] crate git repo https://github.com/sh0623k/coding_interview 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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] 42fe2ad62c1bd18272694914d81568efdc4af70757284d4d80b5d946bc778f0d
[INFO] running `Command { std: "docker" "start" "-a" "42fe2ad62c1bd18272694914d81568efdc4af70757284d4d80b5d946bc778f0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42fe2ad62c1bd18272694914d81568efdc4af70757284d4d80b5d946bc778f0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42fe2ad62c1bd18272694914d81568efdc4af70757284d4d80b5d946bc778f0d", kill_on_drop: false }`
[INFO] [stdout] 42fe2ad62c1bd18272694914d81568efdc4af70757284d4d80b5d946bc778f0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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] 7376d95c9613ee51430d074123100a88fad1f3ed6329628729c0c9b159d186a8
[INFO] running `Command { std: "docker" "start" "-a" "7376d95c9613ee51430d074123100a88fad1f3ed6329628729c0c9b159d186a8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking coding_interview v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting coding_interview v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/linked_list.rs:147:17
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 &node.borrow_mut().remove();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 let _ = &node.borrow_mut().remove();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch03p02 src/bin/ch03p02.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=3a2ba0149907ec3d -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.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 `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch01p04 src/bin/ch01p04.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=a461cb7d42216fdd -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch03p05 src/bin/ch03p05.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=0a8951c74099ac9a -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch05p04 src/bin/ch05p04.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=b6da05c529ff2872 -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch02p07 src/bin/ch02p07.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=84045bc5ec3478dc -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch08p11 src/bin/ch08p11.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=816fa59cc81c58dd -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch08p01 src/bin/ch08p01.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=be2912ff2bde19c7 -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch05p05 src/bin/ch05p05.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=67e83a5e5a331073 -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch05p06 src/bin/ch05p06.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f2828fae759afebc -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch03p04 src/bin/ch03p04.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=5754a3e9b983b341 -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch04p06 src/bin/ch04p06.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=42eb269c568a7937 -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch02p03 src/bin/ch02p03.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=ac20a8bed916768b -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch05p08 src/bin/ch05p08.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=374664a758f479a5 -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch04p05 src/bin/ch04p05.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=ee34bb615380513b -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch04p12 src/bin/ch04p12.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=15ff6379422f97bc -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch10p01 src/bin/ch10p01.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=a4430b736af935a8 -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch05p02 src/bin/ch05p02.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=7207f6f6a1c2bf45 -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch07p01 src/bin/ch07p01.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=e9669b216b3111bc -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch04p11 src/bin/ch04p11.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=c37d60cd92e9200c -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch01p01 src/bin/ch01p01.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=41edff34be813e31 -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch02p05 src/bin/ch02p05.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=fc958f8bd6aa97d1 -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch02p04 src/bin/ch02p04.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=427c89251917a9a0 -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch04p03 src/bin/ch04p03.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=eeab3186e5973722 -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch01p03 src/bin/ch01p03.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=e952fb667cef4240 -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch01p06 src/bin/ch01p06.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=efb6691e7b6b1efc -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch04p04 src/bin/ch04p04.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=7d2c14b521122bd6 -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch03p06 src/bin/ch03p06.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=804e2bad3a8d0e9e -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch10p02 src/bin/ch10p02.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=bdb30b6667f76697 -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch07p12 src/bin/ch07p12.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=675ef3859b6baf1b -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch08p12 src/bin/ch08p12.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=6b4d65ec0083b43d -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch01p07 src/bin/ch01p07.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=0afc3d01480c9de6 -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch05p07 src/bin/ch05p07.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=ceac5d268a8550cc -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch01p05 src/bin/ch01p05.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=82641f74ef395a3f -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `coding_interview`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch02p01 src/bin/ch02p01.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=0091e1a5b01c9fd5 -L dependency=/opt/rustwide/target/debug/deps --extern coding_interview=/opt/rustwide/target/debug/deps/libcoding_interview-18aab7c4bd0dc4ad.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "7376d95c9613ee51430d074123100a88fad1f3ed6329628729c0c9b159d186a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7376d95c9613ee51430d074123100a88fad1f3ed6329628729c0c9b159d186a8", kill_on_drop: false }`
[INFO] [stdout] 7376d95c9613ee51430d074123100a88fad1f3ed6329628729c0c9b159d186a8