[INFO] cloning repository https://github.com/BB20101997/Learning-Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BB20101997/Learning-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBB20101997%2FLearning-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBB20101997%2FLearning-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eecc7641c615d22bbe90339c6ae82870aa33a51b
[INFO] building BB20101997/Learning-Rust against master#ad211ced81509462cdfe4c29ed10f97279a0acae for pr-135216
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBB20101997%2FLearning-Rust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BB20101997/Learning-Rust on toolchain ad211ced81509462cdfe4c29ed10f97279a0acae
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BB20101997/Learning-Rust
[INFO] finished tweaking git repo https://github.com/BB20101997/Learning-Rust
[INFO] tweaked toml for git repo https://github.com/BB20101997/Learning-Rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/BB20101997/Learning-Rust 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" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v1.0.80
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b6efbeb073ed95c5911f3c81768acfd857add576367df16145e64d991a78eae
[INFO] running `Command { std: "docker" "start" "-a" "8b6efbeb073ed95c5911f3c81768acfd857add576367df16145e64d991a78eae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b6efbeb073ed95c5911f3c81768acfd857add576367df16145e64d991a78eae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b6efbeb073ed95c5911f3c81768acfd857add576367df16145e64d991a78eae", kill_on_drop: false }`
[INFO] [stdout] 8b6efbeb073ed95c5911f3c81768acfd857add576367df16145e64d991a78eae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 847f5bc572e0a20dde5022e28bc60dc233aa1f522014cecf81a712492174a687
[INFO] running `Command { std: "docker" "start" "-a" "847f5bc572e0a20dde5022e28bc60dc233aa1f522014cecf81a712492174a687", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling macros v0.1.0 (/opt/rustwide/workdir/macros)
[INFO] [stderr]    Compiling base_lib v0.1.0 (/opt/rustwide/workdir/base_lib)
[INFO] [stderr]    Compiling network_lib v0.1.0 (/opt/rustwide/workdir/network_lib)
[INFO] [stdout] warning: method `flush` is never used
[INFO] [stdout]   --> network_lib/src/network/serialization.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl<'a> ReadWrite<'a> {
[INFO] [stdout]    | ---------------------- method in this implementation
[INFO] [stdout] 20 |     fn flush(&mut self) -> Result<()> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling chat_base v0.1.0 (/opt/rustwide/workdir/chat_base)
[INFO] [stderr]    Compiling macros_test v0.1.0 (/opt/rustwide/workdir/macros_test)
[INFO] [stderr]    Compiling chat_server v0.1.0 (/opt/rustwide/workdir/chat_server)
[INFO] [stderr]    Compiling chat_client v0.1.0 (/opt/rustwide/workdir/chat_client)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.62s
[INFO] running `Command { std: "docker" "inspect" "847f5bc572e0a20dde5022e28bc60dc233aa1f522014cecf81a712492174a687", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "847f5bc572e0a20dde5022e28bc60dc233aa1f522014cecf81a712492174a687", kill_on_drop: false }`
[INFO] [stdout] 847f5bc572e0a20dde5022e28bc60dc233aa1f522014cecf81a712492174a687
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30c831e23aec9be5eb07b53b125d9ed476bf7ddf608d802fa49cce1bedb237c8
[INFO] running `Command { std: "docker" "start" "-a" "30c831e23aec9be5eb07b53b125d9ed476bf7ddf608d802fa49cce1bedb237c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling macros v0.1.0 (/opt/rustwide/workdir/macros)
[INFO] [stderr]    Compiling base_lib v0.1.0 (/opt/rustwide/workdir/base_lib)
[INFO] [stderr]    Compiling network_lib v0.1.0 (/opt/rustwide/workdir/network_lib)
[INFO] [stdout] warning: method `flush` is never used
[INFO] [stdout]   --> network_lib/src/network/serialization.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl<'a> ReadWrite<'a> {
[INFO] [stdout]    | ---------------------- method in this implementation
[INFO] [stdout] 20 |     fn flush(&mut self) -> Result<()> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling chat_base v0.1.0 (/opt/rustwide/workdir/chat_base)
[INFO] [stdout] warning: method `flush` is never used
[INFO] [stdout]   --> network_lib/src/network/serialization.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl<'a> ReadWrite<'a> {
[INFO] [stdout]    | ---------------------- method in this implementation
[INFO] [stdout] 20 |     fn flush(&mut self) -> Result<()> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling macros_test v0.1.0 (/opt/rustwide/workdir/macros_test)
[INFO] [stderr]    Compiling chat_server v0.1.0 (/opt/rustwide/workdir/chat_server)
[INFO] [stderr]    Compiling chat_client v0.1.0 (/opt/rustwide/workdir/chat_client)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.54s
[INFO] running `Command { std: "docker" "inspect" "30c831e23aec9be5eb07b53b125d9ed476bf7ddf608d802fa49cce1bedb237c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30c831e23aec9be5eb07b53b125d9ed476bf7ddf608d802fa49cce1bedb237c8", kill_on_drop: false }`
[INFO] [stdout] 30c831e23aec9be5eb07b53b125d9ed476bf7ddf608d802fa49cce1bedb237c8
