[INFO] cloning repository https://github.com/MorganRodgers/rusty_core
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MorganRodgers/rusty_core" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMorganRodgers%2Frusty_core", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMorganRodgers%2Frusty_core'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dc4aa470d6685fa269307d041a2db7e8627e89b3
[INFO] checking MorganRodgers/rusty_core against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMorganRodgers%2Frusty_core" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MorganRodgers/rusty_core on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MorganRodgers/rusty_core
[INFO] finished tweaking git repo https://github.com/MorganRodgers/rusty_core
[INFO] tweaked toml for git repo https://github.com/MorganRodgers/rusty_core written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/MorganRodgers/rusty_core already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5f613c04d4910d4d38e445ffc09c61227fe428636681be0ea62fb8b3dcb675a5
[INFO] running `Command { std: "docker" "start" "-a" "5f613c04d4910d4d38e445ffc09c61227fe428636681be0ea62fb8b3dcb675a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f613c04d4910d4d38e445ffc09c61227fe428636681be0ea62fb8b3dcb675a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f613c04d4910d4d38e445ffc09c61227fe428636681be0ea62fb8b3dcb675a5", kill_on_drop: false }`
[INFO] [stdout] 5f613c04d4910d4d38e445ffc09c61227fe428636681be0ea62fb8b3dcb675a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 215e335c865ed30f5dd5502982ca4a68d7b1e3c4edd7f488c55a14b91584d330
[INFO] running `Command { std: "docker" "start" "-a" "215e335c865ed30f5dd5502982ca4a68d7b1e3c4edd7f488c55a14b91584d330", kill_on_drop: false }`
[INFO] [stderr]     Checking rusty_core v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:35:10
[INFO] [stdout]    |
[INFO] [stdout] 35 |     for (i, line) in stream_reader.lines().enumerate() {
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:35:10
[INFO] [stdout]    |
[INFO] [stdout] 35 |     for (i, line) in stream_reader.lines().enumerate() {
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `JobStatus`
[INFO] [stdout]  --> src/main.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum JobStatus {
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `JobInfo`
[INFO] [stdout]   --> src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct JobInfo {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `JobStatus`
[INFO] [stdout]  --> src/main.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum JobStatus {
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `JobInfo`
[INFO] [stdout]   --> src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct JobInfo {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "215e335c865ed30f5dd5502982ca4a68d7b1e3c4edd7f488c55a14b91584d330", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "215e335c865ed30f5dd5502982ca4a68d7b1e3c4edd7f488c55a14b91584d330", kill_on_drop: false }`
[INFO] [stdout] 215e335c865ed30f5dd5502982ca4a68d7b1e3c4edd7f488c55a14b91584d330