Dec 12 02:49:10.706 INFO checking Floppy/ruby-version-badger against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 02:49:10.707 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa9aa79c3c583aab59ac9134542d60a780c35e2e-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 02:49:11.188 INFO [stdout] 727400cc9674a597473871a111aa8afc34ef5fd8092d4a72583d5360e5c15694
Dec 12 02:49:11.190 INFO running `"docker" "start" "-a" "727400cc9674a597473871a111aa8afc34ef5fd8092d4a72583d5360e5c15694"`
Dec 12 02:49:13.491 INFO [stderr] usermod: no changes
Dec 12 02:49:13.560 INFO [stderr] warning: unused manifest key: package.target
Dec 12 02:49:13.964 INFO [stderr]     Checking tokio-io v0.1.5
Dec 12 02:49:13.970 INFO [stderr]     Checking mio v0.6.13
Dec 12 02:49:13.990 INFO [stderr]     Checking hyper v0.10.13
Dec 12 02:49:13.993 INFO [stderr]     Checking env_logger v0.3.5
Dec 12 02:49:17.880 INFO [stderr]     Checking tokio-core v0.1.12
Dec 12 02:49:20.275 INFO [stderr]     Checking tokio-proto v0.1.1
Dec 12 02:49:20.275 INFO [stderr]     Checking tokio-tls v0.1.4
Dec 12 02:49:20.712 INFO [stderr]     Checking iron v0.5.1
Dec 12 02:49:24.374 INFO [stderr]     Checking mount v0.3.0
Dec 12 02:49:24.381 INFO [stderr]     Checking router v0.5.1
Dec 12 02:49:27.667 INFO [stderr]     Checking hyper v0.11.21
Dec 12 02:49:30.046 INFO [stderr]     Checking staticfile v0.4.0
Dec 12 02:49:36.866 INFO [stderr]     Checking hyper-tls v0.1.2
Dec 12 02:49:39.507 INFO [stderr]     Checking reqwest v0.8.5
Dec 12 02:49:44.024 INFO [stderr]     Checking ruby-version-badger v0.1.1 (/source)
Dec 12 02:49:52.676 INFO [stderr] warning: value assigned to `version` is never read
Dec 12 02:49:52.676 INFO [stderr]   --> src/ruby.rs:19:13
Dec 12 02:49:52.676 INFO [stderr]    |
Dec 12 02:49:52.676 INFO [stderr] 19 |     let mut version = "unknown".to_string();
Dec 12 02:49:52.676 INFO [stderr]    |             ^^^^^^^
Dec 12 02:49:52.676 INFO [stderr]    |
Dec 12 02:49:52.676 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 12 02:49:52.676 INFO [stderr] 
Dec 12 02:49:52.676 INFO [stderr] warning: value assigned to `version` is never read
Dec 12 02:49:52.676 INFO [stderr]   --> src/rust.rs:19:13
Dec 12 02:49:52.676 INFO [stderr]    |
Dec 12 02:49:52.676 INFO [stderr] 19 |     let mut version = "unknown".to_string();
Dec 12 02:49:52.676 INFO [stderr]    |             ^^^^^^^
Dec 12 02:49:52.676 INFO [stderr] 
Dec 12 02:49:52.676 INFO [stderr] warning: value assigned to `version` is never read
Dec 12 02:49:52.676 INFO [stderr]   --> src/node.rs:18:13
Dec 12 02:49:52.676 INFO [stderr]    |
Dec 12 02:49:52.676 INFO [stderr] 18 |     let mut version = "unknown".to_string();
Dec 12 02:49:52.677 INFO [stderr]    |             ^^^^^^^
Dec 12 02:49:52.677 INFO [stderr] 
Dec 12 02:49:52.710 INFO [stderr] warning: function is never used: `language`
Dec 12 02:49:52.710 INFO [stderr]   --> src/config.rs:11:1
Dec 12 02:49:52.710 INFO [stderr]    |
Dec 12 02:49:52.710 INFO [stderr] 11 | pub fn language(lang: String) -> Result<yaml::Yaml, Error> {
Dec 12 02:49:52.710 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 02:49:52.710 INFO [stderr]    |
Dec 12 02:49:52.710 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 02:49:52.710 INFO [stderr] 
Dec 12 02:49:52.713 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 02:49:52.713 INFO [stderr]   --> src/main.rs:20:5
Dec 12 02:49:52.714 INFO [stderr]    |
Dec 12 02:49:52.714 INFO [stderr] 20 |     env_logger::init();
Dec 12 02:49:52.714 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 12 02:49:52.714 INFO [stderr]    |
Dec 12 02:49:52.714 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 02:49:52.714 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 02:49:52.714 INFO [stderr] 
Dec 12 02:49:52.731 INFO [stderr] warning: value assigned to `version` is never read
Dec 12 02:49:52.731 INFO [stderr]   --> src/ruby.rs:19:13
Dec 12 02:49:52.731 INFO [stderr]    |
Dec 12 02:49:52.731 INFO [stderr] 19 |     let mut version = "unknown".to_string();
Dec 12 02:49:52.731 INFO [stderr]    |             ^^^^^^^
Dec 12 02:49:52.731 INFO [stderr]    |
Dec 12 02:49:52.731 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 12 02:49:52.731 INFO [stderr] 
Dec 12 02:49:52.731 INFO [stderr] warning: value assigned to `version` is never read
Dec 12 02:49:52.731 INFO [stderr]   --> src/rust.rs:19:13
Dec 12 02:49:52.731 INFO [stderr]    |
Dec 12 02:49:52.731 INFO [stderr] 19 |     let mut version = "unknown".to_string();
Dec 12 02:49:52.731 INFO [stderr]    |             ^^^^^^^
Dec 12 02:49:52.731 INFO [stderr] 
Dec 12 02:49:52.731 INFO [stderr] warning: value assigned to `version` is never read
Dec 12 02:49:52.731 INFO [stderr]   --> src/node.rs:18:13
Dec 12 02:49:52.731 INFO [stderr]    |
Dec 12 02:49:52.731 INFO [stderr] 18 |     let mut version = "unknown".to_string();
Dec 12 02:49:52.731 INFO [stderr]    |             ^^^^^^^
Dec 12 02:49:52.731 INFO [stderr] 
Dec 12 02:49:52.830 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 02:49:52.830 INFO [stderr]   --> src/main.rs:20:5
Dec 12 02:49:52.830 INFO [stderr]    |
Dec 12 02:49:52.830 INFO [stderr] 20 |     env_logger::init();
Dec 12 02:49:52.830 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 12 02:49:52.830 INFO [stderr]    |
Dec 12 02:49:52.830 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 02:49:52.830 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 02:49:52.830 INFO [stderr] 
Dec 12 02:49:52.879 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.35s
Dec 12 02:49:52.880 INFO [stderr] su: No module specific data is present
Dec 12 02:49:53.361 INFO running `"docker" "inspect" "727400cc9674a597473871a111aa8afc34ef5fd8092d4a72583d5360e5c15694"`
Dec 12 02:49:53.560 INFO running `"docker" "rm" "-f" "727400cc9674a597473871a111aa8afc34ef5fd8092d4a72583d5360e5c15694"`
Dec 12 02:49:53.844 INFO [stdout] 727400cc9674a597473871a111aa8afc34ef5fd8092d4a72583d5360e5c15694