[INFO] cloning repository https://github.com/grajnikanth/rust_book_exs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/grajnikanth/rust_book_exs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrajnikanth%2Frust_book_exs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrajnikanth%2Frust_book_exs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ce158f0f63a61c28f1c995cff6bdfe3b8be73df2
[INFO] documenting grajnikanth/rust_book_exs 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%2Fgrajnikanth%2Frust_book_exs" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/grajnikanth/rust_book_exs 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/grajnikanth/rust_book_exs
[INFO] finished tweaking git repo https://github.com/grajnikanth/rust_book_exs
[INFO] tweaked toml for git repo https://github.com/grajnikanth/rust_book_exs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/grajnikanth/rust_book_exs 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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] b31ba6d1ca12f4df212e01528c75ffcb9315f7dd3dd93343ba922e89e0d18d82
[INFO] running `Command { std: "docker" "start" "-a" "b31ba6d1ca12f4df212e01528c75ffcb9315f7dd3dd93343ba922e89e0d18d82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b31ba6d1ca12f4df212e01528c75ffcb9315f7dd3dd93343ba922e89e0d18d82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b31ba6d1ca12f4df212e01528c75ffcb9315f7dd3dd93343ba922e89e0d18d82", kill_on_drop: false }`
[INFO] [stdout] b31ba6d1ca12f4df212e01528c75ffcb9315f7dd3dd93343ba922e89e0d18d82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 38531681201e1ab111cb13462dbe7efb2279ee31abcca4013a24de5ec80b97f3
[INFO] running `Command { std: "docker" "start" "-a" "38531681201e1ab111cb13462dbe7efb2279ee31abcca4013a24de5ec80b97f3", kill_on_drop: false }`
[INFO] [stderr]  Documenting rust_book_exs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rust_book_exs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 4_enum_ex1 src/bin/4_enum_ex1.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=6d6062daecccb287 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.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 `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 37_hashmap_3 src/bin/37_hashmap_3.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=bff5c3d0ec9c3867 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 12_match_catchAll_ex1 src/bin/12_match_catchAll_ex1.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=59e28dbf7c4ad242 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 56_generics_1 src/bin/56_generics_1.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=b07a2678a43f1398 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 50_errors_9 src/bin/50_errors_9.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=d790b2ae5d2d6fb1 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 25_vectors_3 src/bin/25_vectors_3.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=4a3147c3f0c19f53 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 53_main_return src/bin/53_main_return.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=01f1d14368c6c5c0 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 29_vectors_7 src/bin/29_vectors_7.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=5affbb5c827393de -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 35_hashmap_1 src/bin/35_hashmap_1.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=c90de81eef0c723c -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 41_hashmap_7 src/bin/41_hashmap_7.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=c2780ec16fb23508 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 18_struct_display src/bin/18_struct_display.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=a644a35e72e3b5b7 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 8_enum_option_ex1 src/bin/8_enum_option_ex1.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=416976b4c700af8d -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 36_hashmap_2 src/bin/36_hashmap_2.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=138fce213b2c056a -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 42_errors_1 src/bin/42_errors_1.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=45370488bbdb82ec -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 15_match_option_ex1 src/bin/15_match_option_ex1.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=b5558ee7935b58fc -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 23_vectors_1 src/bin/23_vectors_1.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=cb8224bbeeda908f -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 22_struct_tuples_ex1 src/bin/22_struct_tuples_ex1.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=bb567d9b2965a2da -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 43_errors_2 src/bin/43_errors_2.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=c16b7c8d6d0b53e4 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 19_struct_ex1 src/bin/19_struct_ex1.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=83c1337a05b9589a -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 11_match_ex3 src/bin/11_match_ex3.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=352036b19cc166c6 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 16_if_let_ex1 src/bin/16_if_let_ex1.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=49b2abd6b1fdb1cb -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 10_match_ex2 src/bin/10_match_ex2.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=726b2903d57834db -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 46_errors_5 src/bin/46_errors_5.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=329f03f519ec4dc7 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 6_enum_ex3 src/bin/6_enum_ex3.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=0bc78ebf1d2215c2 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 60_generics_5 src/bin/60_generics_5.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=9715d437d7b0c4db -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 39_hashmap_5 src/bin/39_hashmap_5.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=dc156bb88831e091 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 20_struct_methods src/bin/20_struct_methods.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=b095d19c374ab0d0 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 14_match_catchAll_ex3 src/bin/14_match_catchAll_ex3.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=4f03ef3add0f98fd -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 17_if_let_ex2 src/bin/17_if_let_ex2.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=77e40badf4adc392 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 38_hashmap_4 src/bin/38_hashmap_4.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=934ddce813933e74 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 3_debug_ex src/bin/3_debug_ex.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=5de5f700297cb838 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 33_strings_3 src/bin/33_strings_3.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=b8289ade7825fb8f -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 7_enum_ex4 src/bin/7_enum_ex4.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=de7cd6ba1efa9b28 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 48_errors_7 src/bin/48_errors_7.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=5d09bbad0573617f -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 52_Result_Option_1 src/bin/52_Result_Option_1.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=819183086bec4864 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 9_match_ex1 src/bin/9_match_ex1.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=846ef4c11396699b -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 13_match_catchAll_ex2 src/bin/13_match_catchAll_ex2.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=a4bf19bb2b5fba4b -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 31_strings_2 src/bin/31_strings_2.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=37247235f7c7222a -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 54_error_unwrap_1 src/bin/54_error_unwrap_1.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=583c469603a1cb17 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 64_traits_1 src/bin/64_traits_1.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=528b925e50379a0b -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 2_area_structs src/bin/2_area_structs.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=a431a9a946eee858 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 26_vectors_4 src/bin/26_vectors_4.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=128660fd32ae5e5f -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 61_generics_6 src/bin/61_generics_6.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=c5647470661b2a20 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 59_generics_4 src/bin/59_generics_4.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=83e1e24d56678d2e -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 58_generics_3 src/bin/58_generics_3.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f59702e7f110bc2b -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 34_strings_4 src/bin/34_strings_4.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=265eb553df22c02e -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 57_generics_2 src/bin/57_generics_2.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=5379faffb049206e -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 44_errors_3 src/bin/44_errors_3.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=baa11ec3165ac79c -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 63_generics_8 src/bin/63_generics_8.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=e386000b5c2720f0 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 47_errors_6 src/bin/47_errors_6.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=9fb3e14a3eaab8ca -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 45_errors_4 src/bin/45_errors_4.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=0cd5ded16af23886 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 21_struct_methods_ex2 src/bin/21_struct_methods_ex2.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=9108c86dccf133c4 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 55_function_dupl_1 src/bin/55_function_dupl_1.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=7b9e4e9e298d60ed -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 62_generics_7 src/bin/62_generics_7.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f9b5d209b11fbe84 -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rust_book_exs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name 1_area_ex1 src/bin/1_area_ex1.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=e2a48b863f57986f -L dependency=/opt/rustwide/target/debug/deps --extern rust_book_exs=/opt/rustwide/target/debug/deps/librust_book_exs-8a86f7090c148d7d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "38531681201e1ab111cb13462dbe7efb2279ee31abcca4013a24de5ec80b97f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38531681201e1ab111cb13462dbe7efb2279ee31abcca4013a24de5ec80b97f3", kill_on_drop: false }`
[INFO] [stdout] 38531681201e1ab111cb13462dbe7efb2279ee31abcca4013a24de5ec80b97f3