[INFO] fetching crate rust_tcp_ipc 0.3.1...
[INFO] building rust_tcp_ipc-0.3.1 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate rust_tcp_ipc 0.3.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate rust_tcp_ipc 0.3.1
[INFO] finished tweaking crates.io crate rust_tcp_ipc 0.3.1
[INFO] tweaked toml for crates.io crate rust_tcp_ipc 0.3.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rust_tcp_ipc 0.3.1 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 50 packages to latest compatible versions
[INFO] [stderr]       Adding simplelog v0.5.3 (available: v0.12.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded simplelog v0.5.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 189d0bafd4c0a1fd15995bd4e183ba399ad92ef19d18bc25368739a698e8b254
[INFO] running `Command { std: "docker" "start" "-a" "189d0bafd4c0a1fd15995bd4e183ba399ad92ef19d18bc25368739a698e8b254", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "189d0bafd4c0a1fd15995bd4e183ba399ad92ef19d18bc25368739a698e8b254", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "189d0bafd4c0a1fd15995bd4e183ba399ad92ef19d18bc25368739a698e8b254", kill_on_drop: false }`
[INFO] [stdout] 189d0bafd4c0a1fd15995bd4e183ba399ad92ef19d18bc25368739a698e8b254
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94afcc2dff7e0b8dc63918bac73697801d94f424ec83a29e4daeb0809c2e3cb5
[INFO] running `Command { std: "docker" "start" "-a" "94afcc2dff7e0b8dc63918bac73697801d94f424ec83a29e4daeb0809c2e3cb5", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_tcp_ipc v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum `CommandsExample` is never used
[INFO] [stdout]  --> src/tests/example_protocol.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum CommandsExample {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `BusyStatesExample` is never used
[INFO] [stdout]  --> src/tests/example_protocol.rs:9:10
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub enum BusyStatesExample {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LENGTH_SIZE_EXAMPLE` is never used
[INFO] [stdout]   --> src/tests/example_protocol.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | const LENGTH_SIZE_EXAMPLE: usize = 3;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `COMMAND_SIZE_EXAMPLE` is never used
[INFO] [stdout]   --> src/tests/example_protocol.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 15 | const COMMAND_SIZE_EXAMPLE: usize = 2;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `HEADER_SIZE_EXAMPLE` is never used
[INFO] [stdout]   --> src/tests/example_protocol.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 | const HEADER_SIZE_EXAMPLE: usize = LENGTH_SIZE_EXAMPLE + COMMAND_SIZE_EXAMPLE;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ProtocolExample` is never used
[INFO] [stdout]   --> src/tests/example_protocol.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub enum ProtocolExample {}
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `speed_check_tcp_minimal` is never used
[INFO] [stdout]  --> src/tests/speed_comparison.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn speed_check_tcp_minimal() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "94afcc2dff7e0b8dc63918bac73697801d94f424ec83a29e4daeb0809c2e3cb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94afcc2dff7e0b8dc63918bac73697801d94f424ec83a29e4daeb0809c2e3cb5", kill_on_drop: false }`
[INFO] [stdout] 94afcc2dff7e0b8dc63918bac73697801d94f424ec83a29e4daeb0809c2e3cb5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 58c7937d55e9e024a5411aca79ede3f4a7b3a32bf4f591d8781a7ee6ad4cd8ae
[INFO] running `Command { std: "docker" "start" "-a" "58c7937d55e9e024a5411aca79ede3f4a7b3a32bf4f591d8781a7ee6ad4cd8ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling chrono v0.4.42
[INFO] [stdout] warning: enum `CommandsExample` is never used
[INFO] [stdout]  --> src/tests/example_protocol.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum CommandsExample {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `BusyStatesExample` is never used
[INFO] [stdout]  --> src/tests/example_protocol.rs:9:10
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub enum BusyStatesExample {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LENGTH_SIZE_EXAMPLE` is never used
[INFO] [stdout]   --> src/tests/example_protocol.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | const LENGTH_SIZE_EXAMPLE: usize = 3;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `COMMAND_SIZE_EXAMPLE` is never used
[INFO] [stdout]   --> src/tests/example_protocol.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 15 | const COMMAND_SIZE_EXAMPLE: usize = 2;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `HEADER_SIZE_EXAMPLE` is never used
[INFO] [stdout]   --> src/tests/example_protocol.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 | const HEADER_SIZE_EXAMPLE: usize = LENGTH_SIZE_EXAMPLE + COMMAND_SIZE_EXAMPLE;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ProtocolExample` is never used
[INFO] [stdout]   --> src/tests/example_protocol.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub enum ProtocolExample {}
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `speed_check_tcp_minimal` is never used
[INFO] [stdout]  --> src/tests/speed_comparison.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn speed_check_tcp_minimal() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling simplelog v0.5.3
[INFO] [stderr]    Compiling rust_tcp_ipc v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Working` is never constructed
[INFO] [stdout]   --> src/tests/example_protocol.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub enum BusyStatesExample {
[INFO] [stdout]    |          ----------------- variant in this enum
[INFO] [stdout] 10 |     Idle,
[INFO] [stdout] 11 |     Working,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BusyStatesExample` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `speed_check_tcp_minimal` is never used
[INFO] [stdout]  --> src/tests/speed_comparison.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn speed_check_tcp_minimal() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.30s
[INFO] running `Command { std: "docker" "inspect" "58c7937d55e9e024a5411aca79ede3f4a7b3a32bf4f591d8781a7ee6ad4cd8ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58c7937d55e9e024a5411aca79ede3f4a7b3a32bf4f591d8781a7ee6ad4cd8ae", kill_on_drop: false }`
[INFO] [stdout] 58c7937d55e9e024a5411aca79ede3f4a7b3a32bf4f591d8781a7ee6ad4cd8ae