[INFO] cloning repository https://github.com/tofu-tigre/chat-server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tofu-tigre/chat-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftofu-tigre%2Fchat-server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftofu-tigre%2Fchat-server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 640776b6a50fe5d2afc81f07c24af2d517e0c1bd
[INFO] checking tofu-tigre/chat-server against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftofu-tigre%2Fchat-server" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tofu-tigre/chat-server on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tofu-tigre/chat-server
[INFO] finished tweaking git repo https://github.com/tofu-tigre/chat-server
[INFO] tweaked toml for git repo https://github.com/tofu-tigre/chat-server written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tofu-tigre/chat-server 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded socket2 v0.5.4
[INFO] [stderr]   Downloaded smallvec v1.11.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.68
[INFO] [stderr]   Downloaded gimli v0.28.0
[INFO] [stderr]   Downloaded object v0.32.1
[INFO] [stderr]   Downloaded tokio v1.33.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b86995001a9e934bc90698daa75f1ebc2f90437f098b3a96ae38485e362af161
[INFO] running `Command { std: "docker" "start" "-a" "b86995001a9e934bc90698daa75f1ebc2f90437f098b3a96ae38485e362af161", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b86995001a9e934bc90698daa75f1ebc2f90437f098b3a96ae38485e362af161", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b86995001a9e934bc90698daa75f1ebc2f90437f098b3a96ae38485e362af161", kill_on_drop: false }`
[INFO] [stdout] b86995001a9e934bc90698daa75f1ebc2f90437f098b3a96ae38485e362af161
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eecd1aadae4cf3299daa7b451f2e93993f6b3a8f9fabaacc46436993f96a0945
[INFO] running `Command { std: "docker" "start" "-a" "eecd1aadae4cf3299daa7b451f2e93993f6b3a8f9fabaacc46436993f96a0945", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling proc-macro2 v1.0.68
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]     Checking smallvec v1.11.1
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking socket2 v0.5.4
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]     Checking tokio v1.33.0
[INFO] [stderr]     Checking chat-server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `err` is never read
[INFO] [stdout]    --> src/server.rs:100:11
[INFO] [stdout]     |
[INFO] [stdout] 100 |   let mut err = Result::Ok(());
[INFO] [stdout]     |           ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `err` is never read
[INFO] [stdout]    --> src/server.rs:100:11
[INFO] [stdout]     |
[INFO] [stdout] 100 |   let mut err = Result::Ok(());
[INFO] [stdout]     |           ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` 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 5.32s
[INFO] running `Command { std: "docker" "inspect" "eecd1aadae4cf3299daa7b451f2e93993f6b3a8f9fabaacc46436993f96a0945", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eecd1aadae4cf3299daa7b451f2e93993f6b3a8f9fabaacc46436993f96a0945", kill_on_drop: false }`
[INFO] [stdout] eecd1aadae4cf3299daa7b451f2e93993f6b3a8f9fabaacc46436993f96a0945