[INFO] cloning repository https://github.com/anand-prem/twenty-one-days-of-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/anand-prem/twenty-one-days-of-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanand-prem%2Ftwenty-one-days-of-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanand-prem%2Ftwenty-one-days-of-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3ad786cdac09e8851e2d7db341d8ae844977a2f9
[INFO] testing anand-prem/twenty-one-days-of-rust against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanand-prem%2Ftwenty-one-days-of-rust" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/anand-prem/twenty-one-days-of-rust on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/anand-prem/twenty-one-days-of-rust
[INFO] finished tweaking git repo https://github.com/anand-prem/twenty-one-days-of-rust
[INFO] tweaked toml for git repo https://github.com/anand-prem/twenty-one-days-of-rust written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/anand-prem/twenty-one-days-of-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40448fae55b0c1dbb9d9d12fe9b76ff90dd3d946a07ad249bba4c20ba3eb350a
[INFO] running `Command { std: "docker" "start" "-a" "40448fae55b0c1dbb9d9d12fe9b76ff90dd3d946a07ad249bba4c20ba3eb350a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40448fae55b0c1dbb9d9d12fe9b76ff90dd3d946a07ad249bba4c20ba3eb350a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40448fae55b0c1dbb9d9d12fe9b76ff90dd3d946a07ad249bba4c20ba3eb350a", kill_on_drop: false }`
[INFO] [stdout] 40448fae55b0c1dbb9d9d12fe9b76ff90dd3d946a07ad249bba4c20ba3eb350a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe98509e403f8efdef94648e5b93c278301b7840860e36a2ec4ea9312cdc08dc
[INFO] running `Command { std: "docker" "start" "-a" "fe98509e403f8efdef94648e5b93c278301b7840860e36a2ec4ea9312cdc08dc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling twenty-one-days-of-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]   --> src/day_1.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     name: &'a str,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `age`
[INFO] [stdout]   --> src/day_1.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     age: u8
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_number_match`
[INFO] [stdout]   --> src/half_hour.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn print_number_match(n: Number) {
[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 1.30s
[INFO] running `Command { std: "docker" "inspect" "fe98509e403f8efdef94648e5b93c278301b7840860e36a2ec4ea9312cdc08dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe98509e403f8efdef94648e5b93c278301b7840860e36a2ec4ea9312cdc08dc", kill_on_drop: false }`
[INFO] [stdout] fe98509e403f8efdef94648e5b93c278301b7840860e36a2ec4ea9312cdc08dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bedd2906183103b1a92d7d9ada61959bf483a26685d49fa69d96afd931bb377c
[INFO] running `Command { std: "docker" "start" "-a" "bedd2906183103b1a92d7d9ada61959bf483a26685d49fa69d96afd931bb377c", kill_on_drop: false }`
[INFO] [stderr]    Compiling twenty-one-days-of-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]   --> src/day_1.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     name: &'a str,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `age`
[INFO] [stdout]   --> src/day_1.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     age: u8
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_number_match`
[INFO] [stdout]   --> src/half_hour.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn print_number_match(n: Number) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "bedd2906183103b1a92d7d9ada61959bf483a26685d49fa69d96afd931bb377c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bedd2906183103b1a92d7d9ada61959bf483a26685d49fa69d96afd931bb377c", kill_on_drop: false }`
[INFO] [stdout] bedd2906183103b1a92d7d9ada61959bf483a26685d49fa69d96afd931bb377c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d3fb67b6b336c5372295885b8aec2510bacd4cb61e4f3ac29adb46ffa0d460d9
[INFO] running `Command { std: "docker" "start" "-a" "d3fb67b6b336c5372295885b8aec2510bacd4cb61e4f3ac29adb46ffa0d460d9", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `name`
[INFO] [stderr]   --> src/day_1.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     name: &'a str,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `age`
[INFO] [stderr]   --> src/day_1.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     age: u8
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_number_match`
[INFO] [stderr]   --> src/half_hour.rs:21:4
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn print_number_match(n: Number) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `twenty-one-days-of-rust` (bin "twenty-one-days-of-rust" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/twenty_one_days_of_rust-2c864920d96600c2)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d3fb67b6b336c5372295885b8aec2510bacd4cb61e4f3ac29adb46ffa0d460d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3fb67b6b336c5372295885b8aec2510bacd4cb61e4f3ac29adb46ffa0d460d9", kill_on_drop: false }`
[INFO] [stdout] d3fb67b6b336c5372295885b8aec2510bacd4cb61e4f3ac29adb46ffa0d460d9