[INFO] cloning repository https://github.com/sdobz/rust-follow-along
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sdobz/rust-follow-along" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdobz%2Frust-follow-along", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdobz%2Frust-follow-along'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 15471338aa916f44df49638cd48fa6ff21536e5e
[INFO] documenting sdobz/rust-follow-along 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%2Fsdobz%2Frust-follow-along" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sdobz/rust-follow-along 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/sdobz/rust-follow-along
[INFO] finished tweaking git repo https://github.com/sdobz/rust-follow-along
[INFO] tweaked toml for git repo https://github.com/sdobz/rust-follow-along written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/sdobz/rust-follow-along 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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 7b349b0884b913c13e0dfef7df118fa6266531cd5da326d1bbe74f478aed1af1
[INFO] running `Command { std: "docker" "start" "-a" "7b349b0884b913c13e0dfef7df118fa6266531cd5da326d1bbe74f478aed1af1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b349b0884b913c13e0dfef7df118fa6266531cd5da326d1bbe74f478aed1af1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b349b0884b913c13e0dfef7df118fa6266531cd5da326d1bbe74f478aed1af1", kill_on_drop: false }`
[INFO] [stdout] 7b349b0884b913c13e0dfef7df118fa6266531cd5da326d1bbe74f478aed1af1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] ea061aface015efaaa95d12388e72a4351d02575c204f5df882b80db38d6204e
[INFO] running `Command { std: "docker" "start" "-a" "ea061aface015efaaa95d12388e72a4351d02575c204f5df882b80db38d6204e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Documenting ch19_advacedfeatures v0.1.0 (/opt/rustwide/workdir/ch19_advancedfeatures)
[INFO] [stderr]  Documenting ch10_generics v0.1.0 (/opt/rustwide/workdir/ch10_generics)
[INFO] [stderr]  Documenting ch05_structs v0.1.0 (/opt/rustwide/workdir/ch05_structs)
[INFO] [stderr]  Documenting ch09_errors v0.1.0 (/opt/rustwide/workdir/ch09_errors)
[INFO] [stderr]  Documenting ch17_objectoriented v0.1.0 (/opt/rustwide/workdir/ch17_objectoriented)
[INFO] [stderr]  Documenting ch15_smartpointers v0.1.0 (/opt/rustwide/workdir/ch15_smartpointers)
[INFO] [stderr]  Documenting ch13b_minigrep2 v0.1.0 (/opt/rustwide/workdir/ch13b_minigrep2)
[INFO] [stderr]  Documenting ch03a_variables v0.1.0 (/opt/rustwide/workdir/ch03a_variables)
[INFO] [stderr]  Documenting ch08_collections v0.1.0 (/opt/rustwide/workdir/ch08_collections)
[INFO] [stderr]  Documenting ch03b_functions v0.1.0 (/opt/rustwide/workdir/ch03b_functions)
[INFO] [stderr]  Documenting ch01_getting_started v0.1.0 (/opt/rustwide/workdir/ch01_getting_started)
[INFO] [stderr]  Documenting ch13a_functional v0.1.0 (/opt/rustwide/workdir/ch13a_functional)
[INFO] [stderr]  Documenting ch03c_branches v0.1.0 (/opt/rustwide/workdir/ch03c_branches)
[INFO] [stderr]  Documenting ch16_concurrency v0.1.0 (/opt/rustwide/workdir/ch16_concurrency)
[INFO] [stderr]  Documenting ch04a_ownership v0.1.0 (/opt/rustwide/workdir/ch04a_ownership)
[INFO] [stderr]  Documenting ch20_webserver v0.1.0 (/opt/rustwide/workdir/ch20_webserver)
[INFO] [stderr]  Documenting ch06_enums v0.1.0 (/opt/rustwide/workdir/ch06_enums)
[INFO] [stderr]  Documenting ch18_patterns v0.1.0 (/opt/rustwide/workdir/ch18_patterns)
[INFO] [stderr]  Documenting ch11_tests v0.1.0 (/opt/rustwide/workdir/ch11_tests)
[INFO] [stderr]  Documenting ch07_modules v0.1.0 (/opt/rustwide/workdir/ch07_modules)
[INFO] [stderr]  Documenting ch04b_slices v0.1.0 (/opt/rustwide/workdir/ch04b_slices)
[INFO] [stderr]  Documenting ch12_minigrep v0.1.0 (/opt/rustwide/workdir/ch12_minigrep)
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> ch18_patterns/src/main.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         'a' ... 'j' => println!("Early ASCII letter"),
[INFO] [stdout]    |             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> ch18_patterns/src/main.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         'k' ... 'z' => println!("Late ASCII letter"),
[INFO] [stdout]    |             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> ch18_patterns/src/main.rs:221:50
[INFO] [stdout]     |
[INFO] [stdout] 221 |         HelloMessage::Hello { id: id_variable @ 3...7 } => {
[INFO] [stdout]     |                                                  ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> ch18_patterns/src/main.rs:225:37
[INFO] [stdout]     |
[INFO] [stdout] 225 |         HelloMessage::Hello { id: 10...12 } => {
[INFO] [stdout]     |                                     ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ch14b_add_one v0.1.0 (/opt/rustwide/workdir/ch14b_add_one)
[INFO] [stderr]  Documenting ch14b_add_one v0.1.0 (/opt/rustwide/workdir/ch14b_add_one)
[INFO] [stderr]  Documenting ch02_guessing_game v0.1.0 (/opt/rustwide/workdir/ch02_guessing_game)
[INFO] [stderr] error: could not document `ch10_generics`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch10_generics ch10_generics/src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=08313953c65dd254 -L dependency=/opt/rustwide/target/debug/deps --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 `ch13a_functional`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch13a_functional ch13a_functional/src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=a1df85cbccf36fa0 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `ch16_concurrency`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch16_concurrency ch16_concurrency/src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=eb1f58ebc7ecd5d5 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `ch13b_minigrep2`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name ch13b_minigrep2 ch13b_minigrep2/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=b1c4409714d43352 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `ch09_errors`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch09_errors ch09_errors/src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=7637df62ed04ae0c -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `ch06_enums`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch06_enums ch06_enums/src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=86ed77fee93427a7 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `ch19_advacedfeatures`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name ch19_advacedfeatures ch19_advancedfeatures/src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=b5774e4b1fc05e2b -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `ch08_collections`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch08_collections ch08_collections/src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=c02c5c392c7deb1a -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `ch15_smartpointers`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch15_smartpointers ch15_smartpointers/src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=bfe224b5c94d4d00 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `ch05_structs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch05_structs ch05_structs/src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=cb900a5bc20bd712 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `ch03c_branches`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch03c_branches ch03c_branches/src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=79ad1dbd62d7f1c6 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `ch04a_ownership`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ch04a_ownership ch04a_ownership/src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f80ff5fb230a2c2d -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `ch12_minigrep`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name ch12_minigrep ch12_minigrep/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=8feb5e1814ccdd80 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ea061aface015efaaa95d12388e72a4351d02575c204f5df882b80db38d6204e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea061aface015efaaa95d12388e72a4351d02575c204f5df882b80db38d6204e", kill_on_drop: false }`
[INFO] [stdout] ea061aface015efaaa95d12388e72a4351d02575c204f5df882b80db38d6204e