[INFO] cloning repository https://github.com/gyng/rust-primer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gyng/rust-primer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgyng%2Frust-primer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgyng%2Frust-primer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ed24db7d18d5c614ab80a44a1f34288f101769b0
[INFO] documenting gyng/rust-primer against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgyng%2Frust-primer" "/workspace/builds/worker-91/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-91/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gyng/rust-primer on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gyng/rust-primer
[INFO] finished tweaking git repo https://github.com/gyng/rust-primer
[INFO] tweaked toml for git repo https://github.com/gyng/rust-primer written to /workspace/builds/worker-91/source/Cargo.toml
[INFO] crate git repo https://github.com/gyng/rust-primer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e2e3dac0aca5cda457469f092f9cdadb1b021e7d9a9ba3d7f4c6a9a3453cc04b
[INFO] running `Command { std: "docker" "start" "-a" "e2e3dac0aca5cda457469f092f9cdadb1b021e7d9a9ba3d7f4c6a9a3453cc04b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2e3dac0aca5cda457469f092f9cdadb1b021e7d9a9ba3d7f4c6a9a3453cc04b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2e3dac0aca5cda457469f092f9cdadb1b021e7d9a9ba3d7f4c6a9a3453cc04b", kill_on_drop: false }`
[INFO] [stdout] e2e3dac0aca5cda457469f092f9cdadb1b021e7d9a9ba3d7f4c6a9a3453cc04b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2cdeb4128e90c46b04e69c7384af5b84e64c5663c251f0aea45a60a81182d901
[INFO] running `Command { std: "docker" "start" "-a" "2cdeb4128e90c46b04e69c7384af5b84e64c5663c251f0aea45a60a81182d901", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.65
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling libc v0.2.91
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking os_str_bytes v2.4.0
[INFO] [stderr]  Documenting demo-generics v0.1.0 (/opt/rustwide/workdir/04-generics-traits/demo)
[INFO] [stderr]  Documenting demo-strings v0.1.0 (/opt/rustwide/workdir/06-strings/demo)
[INFO] [stderr]  Documenting exercise-structs v0.1.0 (/opt/rustwide/workdir/03-structs-lifetimes/exercise)
[INFO] [stderr]  Documenting exercise-libraries v0.1.0 (/opt/rustwide/workdir/07-external-libraries/exercise)
[INFO] [stderr]  Documenting demo-structs v0.1.0 (/opt/rustwide/workdir/03-structs-lifetimes/demo)
[INFO] [stderr]  Documenting demo v0.1.0 (/opt/rustwide/workdir/02-basics/demo)
[INFO] [stderr]  Documenting structs-exercise v0.1.0 (/opt/rustwide/workdir/02-basics/exercise)
[INFO] [stderr]  Documenting solution-structs v0.1.0 (/opt/rustwide/workdir/03-structs-lifetimes/solution)
[INFO] [stderr]  Documenting solution2 v0.1.0 (/opt/rustwide/workdir/02-basics/solution)
[INFO] [stderr]  Documenting solution-match v0.1.0 (/opt/rustwide/workdir/05-match-result/solution)
[INFO] [stderr]  Documenting solution v0.1.0 (/opt/rustwide/workdir/01-hello/solution)
[INFO] [stderr]  Documenting exercise-generics v0.1.0 (/opt/rustwide/workdir/04-generics-traits/exercise)
[INFO] [stderr]  Documenting exercise-hello v0.1.0 (/opt/rustwide/workdir/01-hello/exercise)
[INFO] [stderr]  Documenting exercise-match v0.1.0 (/opt/rustwide/workdir/05-match-result/exercise)
[INFO] [stderr]  Documenting solution-generics v0.1.0 (/opt/rustwide/workdir/04-generics-traits/solution)
[INFO] [stderr]  Documenting demo-match v0.1.0 (/opt/rustwide/workdir/05-match-result/demo)
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]     Checking textwrap v0.12.1
[INFO] [stdout] error: expected one of `!` or `::`, found `:`
[INFO] [stdout]   --> 07-external-libraries/exercise/src/main.rs:21:6
[INFO] [stdout]    |
[INFO] [stdout] 21 | https://docs.serde.rs/serde_json/#parsing-json-as-strongly-typed-data-structures
[INFO] [stdout]    |      ^ expected one of `!` or `::`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `exercise-libraries`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name exercise_libraries 07-external-libraries/exercise/src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]  --> 05-match-result/demo/src/main.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 |     };
[INFO] [stdout]   |      ^ help: remove this semicolon
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected identifier, found `?`
[INFO] [stdout]   --> 04-generics-traits/exercise/src/main.rs:24:37
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let mut map: HashMap<&str, ???> = HashMap::new();
[INFO] [stdout]    |             --------                ^ expected identifier
[INFO] [stdout]    |             |      |
[INFO] [stdout]    |             |      help: use `=` if you meant to assign
[INFO] [stdout]    |             while parsing the type for `mut map`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `!`, `.`, `::`, `;`, `?`, `{`, or an operator, found `,`
[INFO] [stdout]   --> 04-generics-traits/exercise/src/main.rs:24:34
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let mut map: HashMap<&str, ???> = HashMap::new();
[INFO] [stdout]    |                                  ^ expected one of 7 possible tokens
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2cdeb4128e90c46b04e69c7384af5b84e64c5663c251f0aea45a60a81182d901", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cdeb4128e90c46b04e69c7384af5b84e64c5663c251f0aea45a60a81182d901", kill_on_drop: false }`
[INFO] [stdout] 2cdeb4128e90c46b04e69c7384af5b84e64c5663c251f0aea45a60a81182d901
