[INFO] cloning repository https://github.com/boilsquid/vsock-parent
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/boilsquid/vsock-parent" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fboilsquid%2Fvsock-parent", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fboilsquid%2Fvsock-parent'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bf287f96e1389a09c88b6490eef7feea9a404794
[INFO] checking boilsquid/vsock-parent/bf287f96e1389a09c88b6490eef7feea9a404794 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fboilsquid%2Fvsock-parent" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/boilsquid/vsock-parent on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/boilsquid/vsock-parent
[INFO] finished tweaking git repo https://github.com/boilsquid/vsock-parent
[INFO] tweaked toml for git repo https://github.com/boilsquid/vsock-parent written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/boilsquid/vsock-parent 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 168cfbde30f7b45e8749b084bcdd952945beb0b366a6c9781b7d0b6ef0a5fb33
[INFO] running `Command { std: "docker" "start" "-a" "168cfbde30f7b45e8749b084bcdd952945beb0b366a6c9781b7d0b6ef0a5fb33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "168cfbde30f7b45e8749b084bcdd952945beb0b366a6c9781b7d0b6ef0a5fb33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "168cfbde30f7b45e8749b084bcdd952945beb0b366a6c9781b7d0b6ef0a5fb33", kill_on_drop: false }`
[INFO] [stdout] 168cfbde30f7b45e8749b084bcdd952945beb0b366a6c9781b7d0b6ef0a5fb33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 89c6395c84be0c0e3a0f2beeaf368fa45ae211487d39e4ade3dacf5c385cde05
[INFO] running `Command { std: "docker" "start" "-a" "89c6395c84be0c0e3a0f2beeaf368fa45ae211487d39e4ade3dacf5c385cde05", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]     Checking nix v0.27.1
[INFO] [stderr]     Checking vsock-parent v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `fd`
[INFO] [stdout]   --> src/main.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let fd = match accept(raw_fd) {
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_fd`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fd`
[INFO] [stdout]   --> src/main.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let fd = match accept(raw_fd) {
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_fd`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` 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` profile [unoptimized + debuginfo] target(s) in 1.52s
[INFO] running `Command { std: "docker" "inspect" "89c6395c84be0c0e3a0f2beeaf368fa45ae211487d39e4ade3dacf5c385cde05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89c6395c84be0c0e3a0f2beeaf368fa45ae211487d39e4ade3dacf5c385cde05", kill_on_drop: false }`
[INFO] [stdout] 89c6395c84be0c0e3a0f2beeaf368fa45ae211487d39e4ade3dacf5c385cde05