[INFO] cloning repository https://github.com/rajdeep-singha/Rust_Basics
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rajdeep-singha/Rust_Basics" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frajdeep-singha%2FRust_Basics", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frajdeep-singha%2FRust_Basics'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 49ce535d84494fcfe3049509d1e5c5d93604ce6a
[INFO] fixing rajdeep-singha/Rust_Basics against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=start=2015 for pr-157817-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frajdeep-singha%2FRust_Basics" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/rajdeep-singha/Rust_Basics
[INFO] finished tweaking git repo https://github.com/rajdeep-singha/Rust_Basics
[INFO] tweaked toml for git repo https://github.com/rajdeep-singha/Rust_Basics written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rajdeep-singha/Rust_Basics on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rajdeep-singha/Rust_Basics 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" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 350bd48b9771c77dd5dcce18c8992a4e9ee916c85b2cbd2b59ea5544c06de266
[INFO] running `Command { std: "docker" "start" "350bd48b9771c77dd5dcce18c8992a4e9ee916c85b2cbd2b59ea5544c06de266", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "350bd48b9771c77dd5dcce18c8992a4e9ee916c85b2cbd2b59ea5544c06de266" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "350bd48b9771c77dd5dcce18c8992a4e9ee916c85b2cbd2b59ea5544c06de266", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "350bd48b9771c77dd5dcce18c8992a4e9ee916c85b2cbd2b59ea5544c06de266" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=start=2015", kill_on_drop: false }`
[INFO] [stderr]     Checking hello_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `spawn`
[INFO] [stdout]  --> examples/concurrencyMP.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::thread::{self, spawn};
[INFO] [stdout]   |                         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0373]: closure may outlive the current function, but it borrows `tx`, which is owned by the current function
[INFO] [stdout]  --> examples/concurrencyMP.rs:5:19
[INFO] [stdout]   |
[INFO] [stdout] 5 |     thread::spawn(||{
[INFO] [stdout]   |                   ^^ may outlive borrowed value `tx`
[INFO] [stdout] 6 |           let msg: String = String::from("Hello, world!");
[INFO] [stdout] 7 |           tx.send(msg).unwrap();
[INFO] [stdout]   |           -- `tx` is borrowed here
[INFO] [stdout]   |
[INFO] [stdout] note: function requires argument type to outlive `'static`
[INFO] [stdout]  --> examples/concurrencyMP.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | /     thread::spawn(||{
[INFO] [stdout] 6 | |           let msg: String = String::from("Hello, world!");
[INFO] [stdout] 7 | |           tx.send(msg).unwrap();
[INFO] [stdout] 8 | |     });
[INFO] [stdout]   | |______^
[INFO] [stdout] help: to force the closure to take ownership of `tx` (and any other referenced variables), use the `move` keyword
[INFO] [stdout]   |
[INFO] [stdout] 5 |     thread::spawn(move ||{
[INFO] [stdout]   |                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rx`
[INFO] [stdout]  --> examples/concurrencyMP.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | let (tx, rx) = mpsc::channel(); 
[INFO] [stdout]   |          ^^ help: if this is intentional, prefix it with an underscore: `_rx`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0373`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hello_rust` (example "concurrencyMP") due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "350bd48b9771c77dd5dcce18c8992a4e9ee916c85b2cbd2b59ea5544c06de266", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "350bd48b9771c77dd5dcce18c8992a4e9ee916c85b2cbd2b59ea5544c06de266", kill_on_drop: false }`
[INFO] [stdout] 350bd48b9771c77dd5dcce18c8992a4e9ee916c85b2cbd2b59ea5544c06de266
