[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] testing HADMARINE/rust-udp-test against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHADMARINE%2Frust-udp-test" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/HADMARINE/rust-udp-test on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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-14/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: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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 portpicker v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e7bc94f931f99bdc5b18a44f6be206c1c620ed1e4e61d08a3dd7760d9e6af0ad
[INFO] running `Command { std: "docker" "start" "-a" "e7bc94f931f99bdc5b18a44f6be206c1c620ed1e4e61d08a3dd7760d9e6af0ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7bc94f931f99bdc5b18a44f6be206c1c620ed1e4e61d08a3dd7760d9e6af0ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7bc94f931f99bdc5b18a44f6be206c1c620ed1e4e61d08a3dd7760d9e6af0ad", kill_on_drop: false }`
[INFO] [stdout] e7bc94f931f99bdc5b18a44f6be206c1c620ed1e4e61d08a3dd7760d9e6af0ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0cbe9b348d1654b112a42cf34e9b1420382676eb8786efc2f9907cb634c4abf
[INFO] running `Command { std: "docker" "start" "-a" "a0cbe9b348d1654b112a42cf34e9b1420382676eb8786efc2f9907cb634c4abf", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling instant v0.1.10
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]    Compiling lock_api v0.4.5
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling portpicker v0.1.1
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling rust-udp-test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `rust-udp-test` due to 3 previous errors
[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 enum `Result`, found `()`
[INFO] [stdout]    |        |
[INFO] [stdout]    |        implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected enum `Result<_, 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] running `Command { std: "docker" "inspect" "a0cbe9b348d1654b112a42cf34e9b1420382676eb8786efc2f9907cb634c4abf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0cbe9b348d1654b112a42cf34e9b1420382676eb8786efc2f9907cb634c4abf", kill_on_drop: false }`
[INFO] [stdout] a0cbe9b348d1654b112a42cf34e9b1420382676eb8786efc2f9907cb634c4abf