[INFO] cloning repository https://github.com/Mihai-Eduard/rust-workshop
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Mihai-Eduard/rust-workshop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMihai-Eduard%2Frust-workshop", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMihai-Eduard%2Frust-workshop'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a9b3d6c5ff2c35a40b5c12486a1585a6588d3266
[INFO] building Mihai-Eduard/rust-workshop against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMihai-Eduard%2Frust-workshop" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Mihai-Eduard/rust-workshop on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Mihai-Eduard/rust-workshop
[INFO] finished tweaking git repo https://github.com/Mihai-Eduard/rust-workshop
[INFO] tweaked toml for git repo https://github.com/Mihai-Eduard/rust-workshop written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Mihai-Eduard/rust-workshop 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded IOKit-sys v0.1.5
[INFO] [stderr]   Downloaded CoreFoundation-sys v0.1.4
[INFO] [stderr]   Downloaded serialport v4.2.2
[INFO] [stderr]   Downloaded mach v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40baa8446dd2ead623f12148472a1196afa1aa3687ae7a394fb6eaf51e276a93
[INFO] running `Command { std: "docker" "start" "-a" "40baa8446dd2ead623f12148472a1196afa1aa3687ae7a394fb6eaf51e276a93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40baa8446dd2ead623f12148472a1196afa1aa3687ae7a394fb6eaf51e276a93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40baa8446dd2ead623f12148472a1196afa1aa3687ae7a394fb6eaf51e276a93", kill_on_drop: false }`
[INFO] [stdout] 40baa8446dd2ead623f12148472a1196afa1aa3687ae7a394fb6eaf51e276a93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Dtail-expr-drop-order" "-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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3bb896c3dacc8466eb5bd4f450fa68234108213177c01bd90888302f96e3434c
[INFO] running `Command { std: "docker" "start" "-a" "3bb896c3dacc8466eb5bd4f450fa68234108213177c01bd90888302f96e3434c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.148
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]    Compiling smallvec v1.11.1
[INFO] [stderr]    Compiling bitflags v2.4.0
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling getrandom v0.2.10
[INFO] [stderr]    Compiling signal-hook-registry v1.4.1
[INFO] [stderr]    Compiling mio v0.8.8
[INFO] [stderr]    Compiling nix v0.26.4
[INFO] [stderr]    Compiling libudev v0.3.0
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling signal-hook-mio v0.2.3
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling crossterm v0.27.0
[INFO] [stderr]    Compiling serialport v4.2.2
[INFO] [stderr]    Compiling rust-workshop v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/main.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{io::{self,Write}, time::Duration};
[INFO] [stdout]   |                ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `RobotCmd` is never used
[INFO] [stdout]  --> src/main.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum RobotCmd {
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RobotClient` is never constructed
[INFO] [stdout]   --> src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct RobotClient {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `send` are never used
[INFO] [stdout]   --> src/main.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl RobotClient {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] 16 |     fn new(port_name: &str) -> RobotClient {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |     fn send(&self, cmd: RobotCmd) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `list_ports` is never used
[INFO] [stdout]   --> src/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn list_ports() -> Vec<String> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.78s
[INFO] running `Command { std: "docker" "inspect" "3bb896c3dacc8466eb5bd4f450fa68234108213177c01bd90888302f96e3434c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bb896c3dacc8466eb5bd4f450fa68234108213177c01bd90888302f96e3434c", kill_on_drop: false }`
[INFO] [stdout] 3bb896c3dacc8466eb5bd4f450fa68234108213177c01bd90888302f96e3434c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Dtail-expr-drop-order" "-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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2f00aab17f5be4780950510d3683ae58a9b406d9d83979f7a0d84bfb1515ff54
[INFO] running `Command { std: "docker" "start" "-a" "2f00aab17f5be4780950510d3683ae58a9b406d9d83979f7a0d84bfb1515ff54", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-workshop v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/main.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{io::{self,Write}, time::Duration};
[INFO] [stdout]   |                ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `RobotCmd` is never used
[INFO] [stdout]  --> src/main.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum RobotCmd {
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RobotClient` is never constructed
[INFO] [stdout]   --> src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct RobotClient {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `send` are never used
[INFO] [stdout]   --> src/main.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl RobotClient {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] 16 |     fn new(port_name: &str) -> RobotClient {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |     fn send(&self, cmd: RobotCmd) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `list_ports` is never used
[INFO] [stdout]   --> src/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn list_ports() -> Vec<String> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "2f00aab17f5be4780950510d3683ae58a9b406d9d83979f7a0d84bfb1515ff54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f00aab17f5be4780950510d3683ae58a9b406d9d83979f7a0d84bfb1515ff54", kill_on_drop: false }`
[INFO] [stdout] 2f00aab17f5be4780950510d3683ae58a9b406d9d83979f7a0d84bfb1515ff54