[INFO] cloning repository https://github.com/HADMARINE/rust-udp-test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/HADMARINE/rust-udp-test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHADMARINE%2Frust-udp-test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHADMARINE%2Frust-udp-test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 74ea55fecb5e8dae15631b79b5be38ef7651604b
[INFO] documenting HADMARINE/rust-udp-test against 1.69.0 for beta-1.70-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHADMARINE%2Frust-udp-test" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/HADMARINE/rust-udp-test on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/HADMARINE/rust-udp-test
[INFO] finished tweaking git repo https://github.com/HADMARINE/rust-udp-test
[INFO] tweaked toml for git repo https://github.com/HADMARINE/rust-udp-test written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/HADMARINE/rust-udp-test already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c9f3ed03a1f2ac7fb8c1db558efa6b8a6432d94de70527c68f0f1b4cf8b5b67a
[INFO] running `Command { std: "docker" "start" "-a" "c9f3ed03a1f2ac7fb8c1db558efa6b8a6432d94de70527c68f0f1b4cf8b5b67a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9f3ed03a1f2ac7fb8c1db558efa6b8a6432d94de70527c68f0f1b4cf8b5b67a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9f3ed03a1f2ac7fb8c1db558efa6b8a6432d94de70527c68f0f1b4cf8b5b67a", kill_on_drop: false }`
[INFO] [stdout] c9f3ed03a1f2ac7fb8c1db558efa6b8a6432d94de70527c68f0f1b4cf8b5b67a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b0fd792c17a1f8ada2bb2beb9dbe93ec2a7d0411f0c8711d4b5004bbdfcd0649
[INFO] running `Command { std: "docker" "start" "-a" "b0fd792c17a1f8ada2bb2beb9dbe93ec2a7d0411f0c8711d4b5004bbdfcd0649", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]     Checking instant v0.1.10
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking portpicker v0.1.1
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]  Documenting rust-udp-test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:78:43
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn delete_udp_channel(ch_num: u32) -> Result<_, Box<dyn std::error::Error>> {}
[INFO] [stdout]    |        ------------------                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `Result<_, Box<dyn Error>>`, found `()`
[INFO] [stdout]    |        |
[INFO] [stdout]    |        implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected enum `std::result::Result<_, std::boxed::Box<(dyn std::error::Error + 'static)>>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
[INFO] [stdout]   --> src/main.rs:78:50
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn delete_udp_channel(ch_num: u32) -> Result<_, Box<dyn std::error::Error>> {}
[INFO] [stdout]    |                                                  ^ not allowed in type signatures
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0121, E0308.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0121`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `rust-udp-test`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name rust_udp_test src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=9df4baa989d9d617 -L dependency=/opt/rustwide/target/debug/deps --extern portpicker=/opt/rustwide/target/debug/deps/libportpicker-8fb4ee830952fd1c.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-102bab60adb1cf53.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "b0fd792c17a1f8ada2bb2beb9dbe93ec2a7d0411f0c8711d4b5004bbdfcd0649", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0fd792c17a1f8ada2bb2beb9dbe93ec2a7d0411f0c8711d4b5004bbdfcd0649", kill_on_drop: false }`
[INFO] [stdout] b0fd792c17a1f8ada2bb2beb9dbe93ec2a7d0411f0c8711d4b5004bbdfcd0649
