[INFO] cloning repository https://github.com/cainy-a/CountDownTimerRust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cainy-a/CountDownTimerRust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcainy-a%2FCountDownTimerRust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcainy-a%2FCountDownTimerRust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 92dccfa9e7540eca029e6e76d87a322db27d3adc
[INFO] checking cainy-a/CountDownTimerRust against master#d62d3f7fa9a91d933213cc10e20e740608983f64 for pr-77015
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcainy-a%2FCountDownTimerRust" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cainy-a/CountDownTimerRust on toolchain d62d3f7fa9a91d933213cc10e20e740608983f64
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cainy-a/CountDownTimerRust
[INFO] finished tweaking git repo https://github.com/cainy-a/CountDownTimerRust
[INFO] tweaked toml for git repo https://github.com/cainy-a/CountDownTimerRust written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/cainy-a/CountDownTimerRust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc7bc7880ae68c3ab3c7c3927b74f9784e1c796709c6753dcc6fd438c7d3e8fa
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "cc7bc7880ae68c3ab3c7c3927b74f9784e1c796709c6753dcc6fd438c7d3e8fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc7bc7880ae68c3ab3c7c3927b74f9784e1c796709c6753dcc6fd438c7d3e8fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc7bc7880ae68c3ab3c7c3927b74f9784e1c796709c6753dcc6fd438c7d3e8fa", kill_on_drop: false }`
[INFO] [stdout] cc7bc7880ae68c3ab3c7c3927b74f9784e1c796709c6753dcc6fd438c7d3e8fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 92401a67371848fc92eb0223080eee9c7a93af9c4017dfac41c0dedcdef16373
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "92401a67371848fc92eb0223080eee9c7a93af9c4017dfac41c0dedcdef16373", kill_on_drop: false }`
[INFO] [stderr]     Checking countdown_speed_test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]  --> src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let line: String = read!("{}\n");
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_line`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]   --> src/main.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let line: String = read!("{}\n");
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_line`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]  --> src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let line: String = read!("{}\n");
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_line`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]   --> src/main.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let line: String = read!("{}\n");
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_line`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "92401a67371848fc92eb0223080eee9c7a93af9c4017dfac41c0dedcdef16373", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92401a67371848fc92eb0223080eee9c7a93af9c4017dfac41c0dedcdef16373", kill_on_drop: false }`
[INFO] [stdout] 92401a67371848fc92eb0223080eee9c7a93af9c4017dfac41c0dedcdef16373