[INFO] cloning repository https://github.com/krishnaIndia/Rust-Coverage-Sample
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/krishnaIndia/Rust-Coverage-Sample" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FkrishnaIndia%2FRust-Coverage-Sample", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FkrishnaIndia%2FRust-Coverage-Sample'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ef7b18449cd81d1d0e144f50c06619bab74b7dec
[INFO] checking krishnaIndia/Rust-Coverage-Sample against master#0d37dca25a51fb900a402c94c8818ad1c2789e30 for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FkrishnaIndia%2FRust-Coverage-Sample" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/krishnaIndia/Rust-Coverage-Sample on toolchain 0d37dca25a51fb900a402c94c8818ad1c2789e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/krishnaIndia/Rust-Coverage-Sample
[INFO] finished tweaking git repo https://github.com/krishnaIndia/Rust-Coverage-Sample
[INFO] tweaked toml for git repo https://github.com/krishnaIndia/Rust-Coverage-Sample written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/krishnaIndia/Rust-Coverage-Sample already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b13a033f66fdd0cacf4dc7815fe028600bf3a7da317700b483063ae53ed6f3ec
[INFO] running `Command { std: "docker" "start" "-a" "b13a033f66fdd0cacf4dc7815fe028600bf3a7da317700b483063ae53ed6f3ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b13a033f66fdd0cacf4dc7815fe028600bf3a7da317700b483063ae53ed6f3ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b13a033f66fdd0cacf4dc7815fe028600bf3a7da317700b483063ae53ed6f3ec", kill_on_drop: false }`
[INFO] [stdout] b13a033f66fdd0cacf4dc7815fe028600bf3a7da317700b483063ae53ed6f3ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bdefdd746b2448200af3913831923dd1a67d165873e63549b3137359d30597ad
[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" "bdefdd746b2448200af3913831923dd1a67d165873e63549b3137359d30597ad", kill_on_drop: false }`
[INFO] [stderr]     Checking Rust-Coverage-Sample v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `id`
[INFO] [stdout]  --> src/faculty/faculty.rs:2:3
[INFO] [stdout]   |
[INFO] [stdout] 2 |   id: u8,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `add_test`
[INFO] [stdout]   --> src/lib.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn add_test() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `id`
[INFO] [stdout]  --> src/faculty/faculty.rs:2:3
[INFO] [stdout]   |
[INFO] [stdout] 2 |   id: u8,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "bdefdd746b2448200af3913831923dd1a67d165873e63549b3137359d30597ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdefdd746b2448200af3913831923dd1a67d165873e63549b3137359d30597ad", kill_on_drop: false }`
[INFO] [stdout] bdefdd746b2448200af3913831923dd1a67d165873e63549b3137359d30597ad