[INFO] cloning repository https://github.com/nikitagrgv/rustserver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nikitagrgv/rustserver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnikitagrgv%2Frustserver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnikitagrgv%2Frustserver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c5103b22403ddb22e4c2caf8ae45a78ac9e11dcb
[INFO] building nikitagrgv/rustserver against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnikitagrgv%2Frustserver" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nikitagrgv/rustserver on toolchain 44f415c1d617ebc7b931a243b7b321ef8a6ca47c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nikitagrgv/rustserver
[INFO] finished tweaking git repo https://github.com/nikitagrgv/rustserver
[INFO] tweaked toml for git repo https://github.com/nikitagrgv/rustserver written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/nikitagrgv/rustserver 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" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6514979e286d524be90e62201a976b52fc10f99864b34cfd16b9cd981a1cd33
[INFO] running `Command { std: "docker" "start" "-a" "d6514979e286d524be90e62201a976b52fc10f99864b34cfd16b9cd981a1cd33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6514979e286d524be90e62201a976b52fc10f99864b34cfd16b9cd981a1cd33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6514979e286d524be90e62201a976b52fc10f99864b34cfd16b9cd981a1cd33", kill_on_drop: false }`
[INFO] [stdout] d6514979e286d524be90e62201a976b52fc10f99864b34cfd16b9cd981a1cd33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 276ca802b73a26715e08c683beedcb21e2cb8aecf90d1f4a416a9afe150c96cf
[INFO] running `Command { std: "docker" "start" "-a" "276ca802b73a26715e08c683beedcb21e2cb8aecf90d1f4a416a9afe150c96cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling regex-syntax v0.7.4
[INFO] [stderr]    Compiling aho-corasick v1.0.2
[INFO] [stderr]    Compiling regex-automata v0.3.4
[INFO] [stderr]    Compiling regex v1.9.1
[INFO] [stderr]    Compiling rustserver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `id` and `handle` are never read
[INFO] [stdout]   --> src/thread_pool.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct Worker {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 19 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 20 |     handle: JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `workers` is never read
[INFO] [stdout]   --> src/thread_pool.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct ThreadPool {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 37 |     workers: Vec<Worker>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.51s
[INFO] running `Command { std: "docker" "inspect" "276ca802b73a26715e08c683beedcb21e2cb8aecf90d1f4a416a9afe150c96cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "276ca802b73a26715e08c683beedcb21e2cb8aecf90d1f4a416a9afe150c96cf", kill_on_drop: false }`
[INFO] [stdout] 276ca802b73a26715e08c683beedcb21e2cb8aecf90d1f4a416a9afe150c96cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 05b9ba1b44941969bc7f2147d62a592627a698249e27d4205c93480cdd821be2
[INFO] running `Command { std: "docker" "start" "-a" "05b9ba1b44941969bc7f2147d62a592627a698249e27d4205c93480cdd821be2", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustserver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `id` and `handle` are never read
[INFO] [stdout]   --> src/thread_pool.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct Worker {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 19 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 20 |     handle: JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `workers` is never read
[INFO] [stdout]   --> src/thread_pool.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct ThreadPool {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 37 |     workers: Vec<Worker>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "05b9ba1b44941969bc7f2147d62a592627a698249e27d4205c93480cdd821be2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05b9ba1b44941969bc7f2147d62a592627a698249e27d4205c93480cdd821be2", kill_on_drop: false }`
[INFO] [stdout] 05b9ba1b44941969bc7f2147d62a592627a698249e27d4205c93480cdd821be2