[INFO] cloning repository https://github.com/Thoralf-M/neon-process-hangs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Thoralf-M/neon-process-hangs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThoralf-M%2Fneon-process-hangs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThoralf-M%2Fneon-process-hangs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5dc5874abd31c353280ea12febc9712675dc152d
[INFO] checking Thoralf-M/neon-process-hangs against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThoralf-M%2Fneon-process-hangs" "/workspace/builds/worker-23/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-23/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Thoralf-M/neon-process-hangs on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Thoralf-M/neon-process-hangs
[INFO] finished tweaking git repo https://github.com/Thoralf-M/neon-process-hangs
[INFO] tweaked toml for git repo https://github.com/Thoralf-M/neon-process-hangs written to /workspace/builds/worker-23/source/Cargo.toml
[INFO] crate git repo https://github.com/Thoralf-M/neon-process-hangs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 064391ae542d9c44bf455069889aa368d5ba7c449642cea9ac85ab8275c99bd5
[INFO] running `Command { std: "docker" "start" "-a" "064391ae542d9c44bf455069889aa368d5ba7c449642cea9ac85ab8275c99bd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "064391ae542d9c44bf455069889aa368d5ba7c449642cea9ac85ab8275c99bd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "064391ae542d9c44bf455069889aa368d5ba7c449642cea9ac85ab8275c99bd5", kill_on_drop: false }`
[INFO] [stdout] 064391ae542d9c44bf455069889aa368d5ba7c449642cea9ac85ab8275c99bd5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68fa7cea2268eb66388f8a6ebb127e56855bc1bf5b33695e249b7731877a2c33
[INFO] running `Command { std: "docker" "start" "-a" "68fa7cea2268eb66388f8a6ebb127e56855bc1bf5b33695e249b7731877a2c33", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling neon-build v0.9.0
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking cslice v0.2.0
[INFO] [stderr]     Checking libloading v0.6.7
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking neon-runtime v0.9.0
[INFO] [stderr]    Compiling neon v0.9.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling neon-macros v0.9.0
[INFO] [stderr]     Checking neon-process-hangs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `channel`
[INFO] [stdout]   --> src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     channel: Channel,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `channel`
[INFO] [stdout]   --> src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     channel: Channel,
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.63s
[INFO] running `Command { std: "docker" "inspect" "68fa7cea2268eb66388f8a6ebb127e56855bc1bf5b33695e249b7731877a2c33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68fa7cea2268eb66388f8a6ebb127e56855bc1bf5b33695e249b7731877a2c33", kill_on_drop: false }`
[INFO] [stdout] 68fa7cea2268eb66388f8a6ebb127e56855bc1bf5b33695e249b7731877a2c33