[INFO] cloning repository https://github.com/davidmkwon/rust-book
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/davidmkwon/rust-book" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidmkwon%2Frust-book", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidmkwon%2Frust-book'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 07d52e9bc69cad782810a31dd743330ae5929f05
[INFO] documenting davidmkwon/rust-book 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%2Fdavidmkwon%2Frust-book" "/workspace/builds/worker-17/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-17/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/davidmkwon/rust-book 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/davidmkwon/rust-book
[INFO] finished tweaking git repo https://github.com/davidmkwon/rust-book
[INFO] tweaked toml for git repo https://github.com/davidmkwon/rust-book written to /workspace/builds/worker-17/source/Cargo.toml
[INFO] crate git repo https://github.com/davidmkwon/rust-book 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.111
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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] 3fe6c152f270bc4a7302a8b195c386aec39043ec43ccb8789a58ea453a156abe
[INFO] running `Command { std: "docker" "start" "-a" "3fe6c152f270bc4a7302a8b195c386aec39043ec43ccb8789a58ea453a156abe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3fe6c152f270bc4a7302a8b195c386aec39043ec43ccb8789a58ea453a156abe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fe6c152f270bc4a7302a8b195c386aec39043ec43ccb8789a58ea453a156abe", kill_on_drop: false }`
[INFO] [stdout] 3fe6c152f270bc4a7302a8b195c386aec39043ec43ccb8789a58ea453a156abe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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] cd9f0e984297b58100de95ae38c0533b4965e4433c9d0736b0d9527748995650
[INFO] running `Command { std: "docker" "start" "-a" "cd9f0e984297b58100de95ae38c0533b4965e4433c9d0736b0d9527748995650", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]     Checking hello_macro v0.1.0 (/opt/rustwide/workdir/hello_macro)
[INFO] [stderr]    Compiling libc v0.2.111
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]     Checking server v0.1.0 (/opt/rustwide/workdir/server)
[INFO] [stderr]  Documenting server v0.1.0 (/opt/rustwide/workdir/server)
[INFO] [stderr]  Documenting modules v0.1.0 (/opt/rustwide/workdir/modules)
[INFO] [stderr]  Documenting hello_macro v0.1.0 (/opt/rustwide/workdir/hello_macro)
[INFO] [stdout] warning: field is never read: `id`
[INFO] [stdout]   --> server/src/lib.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     id: usize,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking minigrep v0.1.0 (/opt/rustwide/workdir/minigrep)
[INFO] [stderr]  Documenting minigrep v0.1.0 (/opt/rustwide/workdir/minigrep)
[INFO] [stderr]  Documenting tests v0.1.0 (/opt/rustwide/workdir/tests)
[INFO] [stderr]  Documenting hello_macro_derive v0.1.0 (/opt/rustwide/workdir/hello_macro/hello_macro_derive)
[INFO] [stderr]    Compiling hello_macro_derive v0.1.0 (/opt/rustwide/workdir/hello_macro/hello_macro_derive)
[INFO] [stderr]  Documenting book v0.1.0 (/opt/rustwide/workdir/basics)
[INFO] [stderr] error: could not document `hello_macro_derive`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type proc-macro --crate-name hello_macro_derive hello_macro/hello_macro_derive/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=c53e9fdc4c782100 -L dependency=/opt/rustwide/target/debug/deps --extern quote=/opt/rustwide/target/debug/deps/libquote-c2bb4542a103ea4f.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-5848d1467f8442ac.rmeta --extern proc_macro --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 `tests`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name tests tests/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=a85ee8f0a8bdbfa8 -L dependency=/opt/rustwide/target/debug/deps --extern minigrep=/opt/rustwide/target/debug/deps/libminigrep-0fc7da373e0a5034.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `minigrep`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name minigrep minigrep/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=0fc7da373e0a5034 -L dependency=/opt/rustwide/target/debug/deps --extern rand=/opt/rustwide/target/debug/deps/librand-5b4c70e21d51b69a.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `book`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name advanced basics/src/bin/advanced.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f5fa7bde42876846 -L dependency=/opt/rustwide/target/debug/deps --extern hello_macro=/opt/rustwide/target/debug/deps/libhello_macro-f859bea4c66e9fbb.rmeta --extern hello_macro_derive=/opt/rustwide/target/debug/deps/libhello_macro_derive-b2384bbc0754bf70.so --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `book`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name generics basics/src/bin/generics.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=6f66fedbf7da9e9a -L dependency=/opt/rustwide/target/debug/deps --extern hello_macro=/opt/rustwide/target/debug/deps/libhello_macro-f859bea4c66e9fbb.rmeta --extern hello_macro_derive=/opt/rustwide/target/debug/deps/libhello_macro_derive-b2384bbc0754bf70.so --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `book`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name macros basics/src/bin/macros.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=356ff47e70d75315 -L dependency=/opt/rustwide/target/debug/deps --extern hello_macro=/opt/rustwide/target/debug/deps/libhello_macro-f859bea4c66e9fbb.rmeta --extern hello_macro_derive=/opt/rustwide/target/debug/deps/libhello_macro_derive-b2384bbc0754bf70.so --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "cd9f0e984297b58100de95ae38c0533b4965e4433c9d0736b0d9527748995650", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd9f0e984297b58100de95ae38c0533b4965e4433c9d0736b0d9527748995650", kill_on_drop: false }`
[INFO] [stdout] cd9f0e984297b58100de95ae38c0533b4965e4433c9d0736b0d9527748995650