Dec 17 23:25:19.516 INFO checking harindaka/rust-guessing-game against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 23:25:19.516 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 23:25:20.088 INFO [stdout] 52a41741b68f8903d739493a6b904bf281ccf2f332828ded82ea6a740d55c05b
Dec 17 23:25:20.091 INFO running `"docker" "start" "-a" "52a41741b68f8903d739493a6b904bf281ccf2f332828ded82ea6a740d55c05b"`
Dec 17 23:25:22.492 INFO [stderr]     Checking serde v1.0.17
Dec 17 23:25:22.492 INFO [stderr]    Compiling serde_derive v1.0.17
Dec 17 23:25:33.730 INFO [stderr]     Checking serde_json v1.0.5
Dec 17 23:25:35.726 INFO [stderr]     Checking rust_examples v0.1.0 (/opt/crater/workdir)
Dec 17 23:25:36.136 INFO [stderr] warning: unused `#[macro_use]` import
Dec 17 23:25:36.136 INFO [stderr]  --> src/main.rs:4:1
Dec 17 23:25:36.136 INFO [stderr]   |
Dec 17 23:25:36.136 INFO [stderr] 4 | #[macro_use]
Dec 17 23:25:36.136 INFO [stderr]   | ^^^^^^^^^^^^
Dec 17 23:25:36.136 INFO [stderr]   |
Dec 17 23:25:36.136 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 23:25:36.136 INFO [stderr] 
Dec 17 23:25:36.136 INFO [stderr] warning: unused import: `config`
Dec 17 23:25:36.136 INFO [stderr]  --> src/configuration.rs:5:5
Dec 17 23:25:36.136 INFO [stderr]   |
Dec 17 23:25:36.136 INFO [stderr] 5 | use config;
Dec 17 23:25:36.136 INFO [stderr]   |     ^^^^^^
Dec 17 23:25:36.136 INFO [stderr] 
Dec 17 23:25:36.414 INFO [stderr] warning: unused `#[macro_use]` import
Dec 17 23:25:36.414 INFO [stderr]  --> src/main.rs:4:1
Dec 17 23:25:36.414 INFO [stderr]   |
Dec 17 23:25:36.414 INFO [stderr] 4 | #[macro_use]
Dec 17 23:25:36.414 INFO [stderr]   | ^^^^^^^^^^^^
Dec 17 23:25:36.414 INFO [stderr]   |
Dec 17 23:25:36.414 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 23:25:36.414 INFO [stderr] 
Dec 17 23:25:36.414 INFO [stderr] warning: unused import: `config`
Dec 17 23:25:36.414 INFO [stderr]  --> src/configuration.rs:5:5
Dec 17 23:25:36.414 INFO [stderr]   |
Dec 17 23:25:36.414 INFO [stderr] 5 | use config;
Dec 17 23:25:36.414 INFO [stderr]   |     ^^^^^^
Dec 17 23:25:36.414 INFO [stderr] 
Dec 17 23:25:36.576 INFO [stderr] warning: unused variable: `config_build`
Dec 17 23:25:36.576 INFO [stderr]   --> src/configuration.rs:11:13
Dec 17 23:25:36.576 INFO [stderr]    |
Dec 17 23:25:36.576 INFO [stderr] 11 |     let mut config_build: Value =from_str(include_str!("config/build.json")).unwrap();
Dec 17 23:25:36.576 INFO [stderr]    |             ^^^^^^^^^^^^ help: consider using `_config_build` instead
Dec 17 23:25:36.576 INFO [stderr]    |
Dec 17 23:25:36.576 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 23:25:36.576 INFO [stderr] 
Dec 17 23:25:36.576 INFO [stderr] warning: unused variable: `config_prod`
Dec 17 23:25:36.576 INFO [stderr]   --> src/configuration.rs:15:13
Dec 17 23:25:36.580 INFO [stderr]    |
Dec 17 23:25:36.580 INFO [stderr] 15 |     let mut config_prod: Value = from_str(include_str!("config/config_prod.json")).unwrap();
Dec 17 23:25:36.580 INFO [stderr]    |             ^^^^^^^^^^^ help: consider using `_config_prod` instead
Dec 17 23:25:36.580 INFO [stderr] 
Dec 17 23:25:36.592 INFO [stderr] warning: variable does not need to be mutable
Dec 17 23:25:36.592 INFO [stderr]   --> src/configuration.rs:11:9
Dec 17 23:25:36.592 INFO [stderr]    |
Dec 17 23:25:36.592 INFO [stderr] 11 |     let mut config_build: Value =from_str(include_str!("config/build.json")).unwrap();
Dec 17 23:25:36.592 INFO [stderr]    |         ----^^^^^^^^^^^^
Dec 17 23:25:36.596 INFO [stderr]    |         |
Dec 17 23:25:36.596 INFO [stderr]    |         help: remove this `mut`
Dec 17 23:25:36.596 INFO [stderr]    |
Dec 17 23:25:36.596 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 23:25:36.596 INFO [stderr] 
Dec 17 23:25:36.596 INFO [stderr] warning: variable does not need to be mutable
Dec 17 23:25:36.596 INFO [stderr]   --> src/configuration.rs:14:9
Dec 17 23:25:36.596 INFO [stderr]    |
Dec 17 23:25:36.596 INFO [stderr] 14 |     let mut config_qa: Value = from_str(include_str!("config/config_qa.json")).unwrap();
Dec 17 23:25:36.596 INFO [stderr]    |         ----^^^^^^^^^
Dec 17 23:25:36.596 INFO [stderr]    |         |
Dec 17 23:25:36.596 INFO [stderr]    |         help: remove this `mut`
Dec 17 23:25:36.596 INFO [stderr] 
Dec 17 23:25:36.596 INFO [stderr] warning: variable does not need to be mutable
Dec 17 23:25:36.596 INFO [stderr]   --> src/configuration.rs:15:9
Dec 17 23:25:36.596 INFO [stderr]    |
Dec 17 23:25:36.596 INFO [stderr] 15 |     let mut config_prod: Value = from_str(include_str!("config/config_prod.json")).unwrap();
Dec 17 23:25:36.596 INFO [stderr]    |         ----^^^^^^^^^^^
Dec 17 23:25:36.596 INFO [stderr]    |         |
Dec 17 23:25:36.596 INFO [stderr]    |         help: remove this `mut`
Dec 17 23:25:36.596 INFO [stderr] 
Dec 17 23:25:36.918 INFO [stderr] warning: unused variable: `config_build`
Dec 17 23:25:36.918 INFO [stderr]   --> src/configuration.rs:11:13
Dec 17 23:25:36.918 INFO [stderr]    |
Dec 17 23:25:36.918 INFO [stderr] 11 |     let mut config_build: Value =from_str(include_str!("config/build.json")).unwrap();
Dec 17 23:25:36.920 INFO [stderr]    |             ^^^^^^^^^^^^ help: consider using `_config_build` instead
Dec 17 23:25:36.920 INFO [stderr]    |
Dec 17 23:25:36.920 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 23:25:36.920 INFO [stderr] 
Dec 17 23:25:36.920 INFO [stderr] warning: unused variable: `config_prod`
Dec 17 23:25:36.920 INFO [stderr]   --> src/configuration.rs:15:13
Dec 17 23:25:36.920 INFO [stderr]    |
Dec 17 23:25:36.920 INFO [stderr] 15 |     let mut config_prod: Value = from_str(include_str!("config/config_prod.json")).unwrap();
Dec 17 23:25:36.920 INFO [stderr]    |             ^^^^^^^^^^^ help: consider using `_config_prod` instead
Dec 17 23:25:36.920 INFO [stderr] 
Dec 17 23:25:36.936 INFO [stderr] warning: variable does not need to be mutable
Dec 17 23:25:36.938 INFO [stderr]   --> src/configuration.rs:11:9
Dec 17 23:25:36.938 INFO [stderr]    |
Dec 17 23:25:36.938 INFO [stderr] 11 |     let mut config_build: Value =from_str(include_str!("config/build.json")).unwrap();
Dec 17 23:25:36.938 INFO [stderr]    |         ----^^^^^^^^^^^^
Dec 17 23:25:36.938 INFO [stderr]    |         |
Dec 17 23:25:36.938 INFO [stderr]    |         help: remove this `mut`
Dec 17 23:25:36.938 INFO [stderr]    |
Dec 17 23:25:36.938 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 23:25:36.938 INFO [stderr] 
Dec 17 23:25:36.938 INFO [stderr] warning: variable does not need to be mutable
Dec 17 23:25:36.938 INFO [stderr]   --> src/configuration.rs:14:9
Dec 17 23:25:36.938 INFO [stderr]    |
Dec 17 23:25:36.938 INFO [stderr] 14 |     let mut config_qa: Value = from_str(include_str!("config/config_qa.json")).unwrap();
Dec 17 23:25:36.938 INFO [stderr]    |         ----^^^^^^^^^
Dec 17 23:25:36.938 INFO [stderr]    |         |
Dec 17 23:25:36.938 INFO [stderr]    |         help: remove this `mut`
Dec 17 23:25:36.938 INFO [stderr] 
Dec 17 23:25:36.938 INFO [stderr] warning: variable does not need to be mutable
Dec 17 23:25:36.938 INFO [stderr]   --> src/configuration.rs:15:9
Dec 17 23:25:36.938 INFO [stderr]    |
Dec 17 23:25:36.938 INFO [stderr] 15 |     let mut config_prod: Value = from_str(include_str!("config/config_prod.json")).unwrap();
Dec 17 23:25:36.938 INFO [stderr]    |         ----^^^^^^^^^^^
Dec 17 23:25:36.938 INFO [stderr]    |         |
Dec 17 23:25:36.938 INFO [stderr]    |         help: remove this `mut`
Dec 17 23:25:36.938 INFO [stderr] 
Dec 17 23:25:37.088 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.67s
Dec 17 23:25:37.804 INFO running `"docker" "inspect" "52a41741b68f8903d739493a6b904bf281ccf2f332828ded82ea6a740d55c05b"`
Dec 17 23:25:38.084 INFO running `"docker" "rm" "-f" "52a41741b68f8903d739493a6b904bf281ccf2f332828ded82ea6a740d55c05b"`
Dec 17 23:25:38.436 INFO [stdout] 52a41741b68f8903d739493a6b904bf281ccf2f332828ded82ea6a740d55c05b