[INFO] cloning repository https://github.com/Timofeyeff/rust_twelve_day_of_christmas
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Timofeyeff/rust_twelve_day_of_christmas" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTimofeyeff%2Frust_twelve_day_of_christmas", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTimofeyeff%2Frust_twelve_day_of_christmas'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1c99bfddca887f221ecb681d4ef22204a580dfc8
[INFO] testing Timofeyeff/rust_twelve_day_of_christmas against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTimofeyeff%2Frust_twelve_day_of_christmas" "/workspace/builds/worker-28/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-28/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Timofeyeff/rust_twelve_day_of_christmas on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Timofeyeff/rust_twelve_day_of_christmas
[INFO] finished tweaking git repo https://github.com/Timofeyeff/rust_twelve_day_of_christmas
[INFO] tweaked toml for git repo https://github.com/Timofeyeff/rust_twelve_day_of_christmas written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate git repo https://github.com/Timofeyeff/rust_twelve_day_of_christmas already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5c9719a8afa1ed83a841bb17fe30e08241eb440267b4015e1ef6a59dd7c130c1
[INFO] running `Command { std: "docker" "start" "-a" "5c9719a8afa1ed83a841bb17fe30e08241eb440267b4015e1ef6a59dd7c130c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5c9719a8afa1ed83a841bb17fe30e08241eb440267b4015e1ef6a59dd7c130c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c9719a8afa1ed83a841bb17fe30e08241eb440267b4015e1ef6a59dd7c130c1", kill_on_drop: false }`
[INFO] [stdout] 5c9719a8afa1ed83a841bb17fe30e08241eb440267b4015e1ef6a59dd7c130c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d23d9149e38c6672411ba0fb5050e151e973a083ad3ba2b2cbe6797ccdef91e
[INFO] running `Command { std: "docker" "start" "-a" "4d23d9149e38c6672411ba0fb5050e151e973a083ad3ba2b2cbe6797ccdef91e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling twelve_day_of_christmas v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `s_number` is never read
[INFO] [stdout]   --> src/main.rs:59:17
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let mut s_number = String::new();
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `s_string` is never read
[INFO] [stdout]   --> src/main.rs:60:17
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let mut s_string = String::new();
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.00s
[INFO] running `Command { std: "docker" "inspect" "4d23d9149e38c6672411ba0fb5050e151e973a083ad3ba2b2cbe6797ccdef91e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d23d9149e38c6672411ba0fb5050e151e973a083ad3ba2b2cbe6797ccdef91e", kill_on_drop: false }`
[INFO] [stdout] 4d23d9149e38c6672411ba0fb5050e151e973a083ad3ba2b2cbe6797ccdef91e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a166f57a05ec53e8374f6e8911b6d4b4f156a1dad914f0e6c12c593a06d6fb2
[INFO] running `Command { std: "docker" "start" "-a" "7a166f57a05ec53e8374f6e8911b6d4b4f156a1dad914f0e6c12c593a06d6fb2", kill_on_drop: false }`
[INFO] [stderr]    Compiling twelve_day_of_christmas v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `s_number` is never read
[INFO] [stdout]   --> src/main.rs:59:17
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let mut s_number = String::new();
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `s_string` is never read
[INFO] [stdout]   --> src/main.rs:60:17
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let mut s_string = String::new();
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "7a166f57a05ec53e8374f6e8911b6d4b4f156a1dad914f0e6c12c593a06d6fb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a166f57a05ec53e8374f6e8911b6d4b4f156a1dad914f0e6c12c593a06d6fb2", kill_on_drop: false }`
[INFO] [stdout] 7a166f57a05ec53e8374f6e8911b6d4b4f156a1dad914f0e6c12c593a06d6fb2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4473411b2b0a7982dae062b2785eb664ba19dedb0d46a91a899a425f88e8bc2f
[INFO] running `Command { std: "docker" "start" "-a" "4473411b2b0a7982dae062b2785eb664ba19dedb0d46a91a899a425f88e8bc2f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: value assigned to `s_number` is never read
[INFO] [stderr]   --> src/main.rs:59:17
[INFO] [stderr]    |
[INFO] [stderr] 59 |         let mut s_number = String::new();
[INFO] [stderr]    |                 ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `s_string` is never read
[INFO] [stderr]   --> src/main.rs:60:17
[INFO] [stderr]    |
[INFO] [stderr] 60 |         let mut s_string = String::new();
[INFO] [stderr]    |                 ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: `twelve_day_of_christmas` (bin "twelve_day_of_christmas" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 10.47s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/twelve_day_of_christmas-28f4a0e29fb331ec)
[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" "4473411b2b0a7982dae062b2785eb664ba19dedb0d46a91a899a425f88e8bc2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4473411b2b0a7982dae062b2785eb664ba19dedb0d46a91a899a425f88e8bc2f", kill_on_drop: false }`
[INFO] [stdout] 4473411b2b0a7982dae062b2785eb664ba19dedb0d46a91a899a425f88e8bc2f