[INFO] cloning repository https://github.com/rsundar/rust_message_passing
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rsundar/rust_message_passing" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frsundar%2Frust_message_passing", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frsundar%2Frust_message_passing'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f1876d9bd8fc5fe23a9df2c1f70fb74b5ad89e5b
[INFO] checking rsundar/rust_message_passing against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frsundar%2Frust_message_passing" "/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/rsundar/rust_message_passing
[INFO] finished tweaking git repo https://github.com/rsundar/rust_message_passing
[INFO] tweaked toml for git repo https://github.com/rsundar/rust_message_passing written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rsundar/rust_message_passing on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rsundar/rust_message_passing 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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "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/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e22f47a411b2cf77d57791ab508a79076f836d5e522e73e2db341a536fe0158
[INFO] running `Command { std: "docker" "start" "-a" "6e22f47a411b2cf77d57791ab508a79076f836d5e522e73e2db341a536fe0158", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e22f47a411b2cf77d57791ab508a79076f836d5e522e73e2db341a536fe0158", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e22f47a411b2cf77d57791ab508a79076f836d5e522e73e2db341a536fe0158", kill_on_drop: false }`
[INFO] [stdout] 6e22f47a411b2cf77d57791ab508a79076f836d5e522e73e2db341a536fe0158
[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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f5e732d1a8199ed6ef00a25d3f5b9f927424a58d7dbe2c219fdf4940bbb472c
[INFO] running `Command { std: "docker" "start" "-a" "3f5e732d1a8199ed6ef00a25d3f5b9f927424a58d7dbe2c219fdf4940bbb472c", kill_on_drop: false }`
[INFO] [stderr]     Checking assignment1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `thread_tx`
[INFO] [stdout]   --> src/main.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let thread_tx = tx.clone();
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_thread_tx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `thread_tx`
[INFO] [stdout]   --> src/main.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let thread_tx = tx.clone();
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_thread_tx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `txResult` should have a snake case name
[INFO] [stdout]   --> src/main.rs:61:10
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let (txResult, rxResult) = mpsc::channel();
[INFO] [stdout]    |          ^^^^^^^^ help: convert the identifier to snake case: `tx_result`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `rxResult` should have a snake case name
[INFO] [stdout]   --> src/main.rs:61:20
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let (txResult, rxResult) = mpsc::channel();
[INFO] [stdout]    |                    ^^^^^^^^ help: convert the identifier to snake case: `rx_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `txResult` should have a snake case name
[INFO] [stdout]   --> src/main.rs:61:10
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let (txResult, rxResult) = mpsc::channel();
[INFO] [stdout]    |          ^^^^^^^^ help: convert the identifier to snake case: `tx_result`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `rxResult` should have a snake case name
[INFO] [stdout]   --> src/main.rs:61:20
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let (txResult, rxResult) = mpsc::channel();
[INFO] [stdout]    |                    ^^^^^^^^ help: convert the identifier to snake case: `rx_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] running `Command { std: "docker" "inspect" "3f5e732d1a8199ed6ef00a25d3f5b9f927424a58d7dbe2c219fdf4940bbb472c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f5e732d1a8199ed6ef00a25d3f5b9f927424a58d7dbe2c219fdf4940bbb472c", kill_on_drop: false }`
[INFO] [stdout] 3f5e732d1a8199ed6ef00a25d3f5b9f927424a58d7dbe2c219fdf4940bbb472c