Dec 19 16:12:52.913 INFO checking harindaka/rust-guessing-game against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 16:12:52.913 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/harindaka/rust-guessing-game:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 16:12:53.461 INFO [stdout] 3b3800a9310d459300bc6c833669c781ec881fcb72a07aab30c6aa39badf8855
Dec 19 16:12:53.488 INFO running `"docker" "start" "-a" "3b3800a9310d459300bc6c833669c781ec881fcb72a07aab30c6aa39badf8855"`
Dec 19 16:12:55.939 INFO [stderr]     Checking serde_json v1.0.5
Dec 19 16:12:58.108 INFO [stderr]     Checking rust_examples v0.1.0 (/opt/crater/workdir)
Dec 19 16:12:58.624 INFO [stderr] warning: unused `#[macro_use]` import
Dec 19 16:12:58.624 INFO [stderr]  --> src/main.rs:4:1
Dec 19 16:12:58.624 INFO [stderr]   |
Dec 19 16:12:58.624 INFO [stderr] 4 | #[macro_use]
Dec 19 16:12:58.624 INFO [stderr]   | ^^^^^^^^^^^^
Dec 19 16:12:58.624 INFO [stderr]   |
Dec 19 16:12:58.624 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 16:12:58.624 INFO [stderr] 
Dec 19 16:12:58.624 INFO [stderr] warning: unused import: `config`
Dec 19 16:12:58.624 INFO [stderr]  --> src/configuration.rs:5:5
Dec 19 16:12:58.624 INFO [stderr]   |
Dec 19 16:12:58.624 INFO [stderr] 5 | use config;
Dec 19 16:12:58.624 INFO [stderr]   |     ^^^^^^
Dec 19 16:12:58.624 INFO [stderr] 
Dec 19 16:12:58.624 INFO [stderr] warning: unused `#[macro_use]` import
Dec 19 16:12:58.624 INFO [stderr]  --> src/main.rs:4:1
Dec 19 16:12:58.624 INFO [stderr]   |
Dec 19 16:12:58.624 INFO [stderr] 4 | #[macro_use]
Dec 19 16:12:58.624 INFO [stderr]   | ^^^^^^^^^^^^
Dec 19 16:12:58.624 INFO [stderr]   |
Dec 19 16:12:58.624 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 16:12:58.624 INFO [stderr] 
Dec 19 16:12:58.624 INFO [stderr] warning: unused import: `config`
Dec 19 16:12:58.625 INFO [stderr]  --> src/configuration.rs:5:5
Dec 19 16:12:58.625 INFO [stderr]   |
Dec 19 16:12:58.625 INFO [stderr] 5 | use config;
Dec 19 16:12:58.625 INFO [stderr]   |     ^^^^^^
Dec 19 16:12:58.625 INFO [stderr] 
Dec 19 16:12:58.977 INFO [stderr] warning: unused variable: `config_build`
Dec 19 16:12:58.977 INFO [stderr]   --> src/configuration.rs:11:13
Dec 19 16:12:58.977 INFO [stderr]    |
Dec 19 16:12:58.977 INFO [stderr] 11 |     let mut config_build: Value =from_str(include_str!("config/build.json")).unwrap();
Dec 19 16:12:58.977 INFO [stderr]    |             ^^^^^^^^^^^^ help: consider using `_config_build` instead
Dec 19 16:12:58.977 INFO [stderr]    |
Dec 19 16:12:58.977 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 16:12:58.977 INFO [stderr] 
Dec 19 16:12:58.977 INFO [stderr] warning: unused variable: `config_prod`
Dec 19 16:12:58.977 INFO [stderr]   --> src/configuration.rs:15:13
Dec 19 16:12:58.977 INFO [stderr]    |
Dec 19 16:12:58.977 INFO [stderr] 15 |     let mut config_prod: Value = from_str(include_str!("config/config_prod.json")).unwrap();
Dec 19 16:12:58.977 INFO [stderr]    |             ^^^^^^^^^^^ help: consider using `_config_prod` instead
Dec 19 16:12:58.977 INFO [stderr] 
Dec 19 16:12:58.988 INFO [stderr] warning: variable does not need to be mutable
Dec 19 16:12:58.988 INFO [stderr]   --> src/configuration.rs:11:9
Dec 19 16:12:58.988 INFO [stderr]    |
Dec 19 16:12:58.988 INFO [stderr] 11 |     let mut config_build: Value =from_str(include_str!("config/build.json")).unwrap();
Dec 19 16:12:58.988 INFO [stderr]    |         ----^^^^^^^^^^^^
Dec 19 16:12:58.988 INFO [stderr]    |         |
Dec 19 16:12:58.988 INFO [stderr]    |         help: remove this `mut`
Dec 19 16:12:59.000 INFO [stderr]    |
Dec 19 16:12:59.000 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 16:12:59.000 INFO [stderr] 
Dec 19 16:12:59.000 INFO [stderr] warning: variable does not need to be mutable
Dec 19 16:12:59.000 INFO [stderr]   --> src/configuration.rs:14:9
Dec 19 16:12:59.000 INFO [stderr]    |
Dec 19 16:12:59.000 INFO [stderr] 14 |     let mut config_qa: Value = from_str(include_str!("config/config_qa.json")).unwrap();
Dec 19 16:12:59.000 INFO [stderr]    |         ----^^^^^^^^^
Dec 19 16:12:59.000 INFO [stderr]    |         |
Dec 19 16:12:59.000 INFO [stderr]    |         help: remove this `mut`
Dec 19 16:12:59.000 INFO [stderr] 
Dec 19 16:12:59.000 INFO [stderr] warning: variable does not need to be mutable
Dec 19 16:12:59.000 INFO [stderr]   --> src/configuration.rs:15:9
Dec 19 16:12:59.000 INFO [stderr]    |
Dec 19 16:12:59.000 INFO [stderr] 15 |     let mut config_prod: Value = from_str(include_str!("config/config_prod.json")).unwrap();
Dec 19 16:12:59.000 INFO [stderr]    |         ----^^^^^^^^^^^
Dec 19 16:12:59.000 INFO [stderr]    |         |
Dec 19 16:12:59.000 INFO [stderr]    |         help: remove this `mut`
Dec 19 16:12:59.000 INFO [stderr] 
Dec 19 16:12:59.116 INFO [stderr] warning: unused variable: `config_build`
Dec 19 16:12:59.116 INFO [stderr]   --> src/configuration.rs:11:13
Dec 19 16:12:59.116 INFO [stderr]    |
Dec 19 16:12:59.116 INFO [stderr] 11 |     let mut config_build: Value =from_str(include_str!("config/build.json")).unwrap();
Dec 19 16:12:59.116 INFO [stderr]    |             ^^^^^^^^^^^^ help: consider using `_config_build` instead
Dec 19 16:12:59.124 INFO [stderr]    |
Dec 19 16:12:59.124 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 16:12:59.124 INFO [stderr] 
Dec 19 16:12:59.124 INFO [stderr] warning: unused variable: `config_prod`
Dec 19 16:12:59.124 INFO [stderr]   --> src/configuration.rs:15:13
Dec 19 16:12:59.124 INFO [stderr]    |
Dec 19 16:12:59.124 INFO [stderr] 15 |     let mut config_prod: Value = from_str(include_str!("config/config_prod.json")).unwrap();
Dec 19 16:12:59.124 INFO [stderr]    |             ^^^^^^^^^^^ help: consider using `_config_prod` instead
Dec 19 16:12:59.124 INFO [stderr] 
Dec 19 16:12:59.156 INFO [stderr] warning: variable does not need to be mutable
Dec 19 16:12:59.156 INFO [stderr]   --> src/configuration.rs:11:9
Dec 19 16:12:59.156 INFO [stderr]    |
Dec 19 16:12:59.156 INFO [stderr] 11 |     let mut config_build: Value =from_str(include_str!("config/build.json")).unwrap();
Dec 19 16:12:59.156 INFO [stderr]    |         ----^^^^^^^^^^^^
Dec 19 16:12:59.156 INFO [stderr]    |         |
Dec 19 16:12:59.156 INFO [stderr]    |         help: remove this `mut`
Dec 19 16:12:59.156 INFO [stderr]    |
Dec 19 16:12:59.156 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 16:12:59.156 INFO [stderr] 
Dec 19 16:12:59.156 INFO [stderr] warning: variable does not need to be mutable
Dec 19 16:12:59.156 INFO [stderr]   --> src/configuration.rs:14:9
Dec 19 16:12:59.156 INFO [stderr]    |
Dec 19 16:12:59.156 INFO [stderr] 14 |     let mut config_qa: Value = from_str(include_str!("config/config_qa.json")).unwrap();
Dec 19 16:12:59.156 INFO [stderr]    |         ----^^^^^^^^^
Dec 19 16:12:59.156 INFO [stderr]    |         |
Dec 19 16:12:59.156 INFO [stderr]    |         help: remove this `mut`
Dec 19 16:12:59.156 INFO [stderr] 
Dec 19 16:12:59.156 INFO [stderr] warning: variable does not need to be mutable
Dec 19 16:12:59.156 INFO [stderr]   --> src/configuration.rs:15:9
Dec 19 16:12:59.156 INFO [stderr]    |
Dec 19 16:12:59.156 INFO [stderr] 15 |     let mut config_prod: Value = from_str(include_str!("config/config_prod.json")).unwrap();
Dec 19 16:12:59.156 INFO [stderr]    |         ----^^^^^^^^^^^
Dec 19 16:12:59.156 INFO [stderr]    |         |
Dec 19 16:12:59.156 INFO [stderr]    |         help: remove this `mut`
Dec 19 16:12:59.156 INFO [stderr] 
Dec 19 16:12:59.348 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.46s
Dec 19 16:13:00.384 INFO running `"docker" "inspect" "3b3800a9310d459300bc6c833669c781ec881fcb72a07aab30c6aa39badf8855"`
Dec 19 16:13:00.780 INFO running `"docker" "rm" "-f" "3b3800a9310d459300bc6c833669c781ec881fcb72a07aab30c6aa39badf8855"`
Dec 19 16:13:01.009 INFO [stdout] 3b3800a9310d459300bc6c833669c781ec881fcb72a07aab30c6aa39badf8855