Dec 17 17:43:52.972 INFO checking plopgrizzly/nahar against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 17:43:52.972 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/plopgrizzly/nahar:/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 17:43:53.285 INFO [stdout] 984dde2babea8f52ff89c968ccf59b186f429c4f0e9cf57de222ee80453cd0a0
Dec 17 17:43:53.290 INFO running `"docker" "start" "-a" "984dde2babea8f52ff89c968ccf59b186f429c4f0e9cf57de222ee80453cd0a0"`
Dec 17 17:43:54.159 INFO [stderr]     Checking nr v0.1.0 (/opt/crater/workdir)
Dec 17 17:43:54.276 INFO [stderr] warning: unused import: `std::fs`
Dec 17 17:43:54.276 INFO [stderr]  --> src/main.rs:8:5
Dec 17 17:43:54.276 INFO [stderr]   |
Dec 17 17:43:54.276 INFO [stderr] 8 | use std::fs;
Dec 17 17:43:54.276 INFO [stderr]   |     ^^^^^^^
Dec 17 17:43:54.276 INFO [stderr]   |
Dec 17 17:43:54.276 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 17:43:54.276 INFO [stderr] 
Dec 17 17:43:54.318 INFO [stderr] warning: unused import: `std::fs`
Dec 17 17:43:54.318 INFO [stderr]  --> src/main.rs:8:5
Dec 17 17:43:54.318 INFO [stderr]   |
Dec 17 17:43:54.318 INFO [stderr] 8 | use std::fs;
Dec 17 17:43:54.318 INFO [stderr]   |     ^^^^^^^
Dec 17 17:43:54.318 INFO [stderr]   |
Dec 17 17:43:54.318 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 17:43:54.318 INFO [stderr] 
Dec 17 17:43:54.345 INFO [stderr] warning: variable does not need to be mutable
Dec 17 17:43:54.345 INFO [stderr]   --> src/main.rs:44:6
Dec 17 17:43:54.345 INFO [stderr]    |
Dec 17 17:43:54.345 INFO [stderr] 44 |     let mut buf_reader = BufReader::new(file);
Dec 17 17:43:54.345 INFO [stderr]    |         ----^^^^^^^^^^
Dec 17 17:43:54.345 INFO [stderr]    |         |
Dec 17 17:43:54.345 INFO [stderr]    |         help: remove this `mut`
Dec 17 17:43:54.345 INFO [stderr]    |
Dec 17 17:43:54.345 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 17:43:54.345 INFO [stderr] 
Dec 17 17:43:54.345 INFO [stderr] warning: variant is never constructed: `Mod`
Dec 17 17:43:54.345 INFO [stderr]   --> src/main.rs:18:2
Dec 17 17:43:54.345 INFO [stderr]    |
Dec 17 17:43:54.345 INFO [stderr] 18 |     Mod, // mod - module exports
Dec 17 17:43:54.345 INFO [stderr]    |     ^^^
Dec 17 17:43:54.345 INFO [stderr]    |
Dec 17 17:43:54.345 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 17:43:54.345 INFO [stderr] 
Dec 17 17:43:54.348 INFO [stderr] warning: variant is never constructed: `Obj`
Dec 17 17:43:54.348 INFO [stderr]   --> src/main.rs:19:2
Dec 17 17:43:54.348 INFO [stderr]    |
Dec 17 17:43:54.348 INFO [stderr] 19 |     Obj, // obj - object exports
Dec 17 17:43:54.348 INFO [stderr]    |     ^^^
Dec 17 17:43:54.348 INFO [stderr] 
Dec 17 17:43:54.348 INFO [stderr] warning: variant is never constructed: `Dep`
Dec 17 17:43:54.348 INFO [stderr]   --> src/main.rs:20:2
Dec 17 17:43:54.348 INFO [stderr]    |
Dec 17 17:43:54.348 INFO [stderr] 20 |     Dep, // dep - dependency imports
Dec 17 17:43:54.348 INFO [stderr]    |     ^^^
Dec 17 17:43:54.348 INFO [stderr] 
Dec 17 17:43:54.348 INFO [stderr] warning: variant is never constructed: `Fun`
Dec 17 17:43:54.348 INFO [stderr]   --> src/main.rs:21:2
Dec 17 17:43:54.348 INFO [stderr]    |
Dec 17 17:43:54.348 INFO [stderr] 21 |     Fun, // fun - function
Dec 17 17:43:54.348 INFO [stderr]    |     ^^^
Dec 17 17:43:54.348 INFO [stderr] 
Dec 17 17:43:54.348 INFO [stderr] warning: variant is never constructed: `Var`
Dec 17 17:43:54.348 INFO [stderr]   --> src/main.rs:22:2
Dec 17 17:43:54.348 INFO [stderr]    |
Dec 17 17:43:54.348 INFO [stderr] 22 |     Var, // var - variable
Dec 17 17:43:54.348 INFO [stderr]    |     ^^^
Dec 17 17:43:54.348 INFO [stderr] 
Dec 17 17:43:54.348 INFO [stderr] warning: variant is never constructed: `Con`
Dec 17 17:43:54.348 INFO [stderr]   --> src/main.rs:23:2
Dec 17 17:43:54.348 INFO [stderr]    |
Dec 17 17:43:54.348 INFO [stderr] 23 |     Con, // con - constant
Dec 17 17:43:54.348 INFO [stderr]    |     ^^^
Dec 17 17:43:54.348 INFO [stderr] 
Dec 17 17:43:54.348 INFO [stderr] warning: variant is never constructed: `Mac`
Dec 17 17:43:54.348 INFO [stderr]   --> src/main.rs:24:2
Dec 17 17:43:54.348 INFO [stderr]    |
Dec 17 17:43:54.348 INFO [stderr] 24 |     Mac, // mac - macro
Dec 17 17:43:54.348 INFO [stderr]    |     ^^^
Dec 17 17:43:54.348 INFO [stderr] 
Dec 17 17:43:54.349 INFO [stderr] warning: variant is never constructed: `Ffi`
Dec 17 17:43:54.349 INFO [stderr]   --> src/main.rs:25:2
Dec 17 17:43:54.349 INFO [stderr]    |
Dec 17 17:43:54.349 INFO [stderr] 25 |     Ffi, // ffi - foreign function interface
Dec 17 17:43:54.349 INFO [stderr]    |     ^^^
Dec 17 17:43:54.349 INFO [stderr] 
Dec 17 17:43:54.349 INFO [stderr] warning: variant is never constructed: `Fvi`
Dec 17 17:43:54.349 INFO [stderr]   --> src/main.rs:26:2
Dec 17 17:43:54.349 INFO [stderr]    |
Dec 17 17:43:54.349 INFO [stderr] 26 |     Fvi, // fvi - foreign variable interface
Dec 17 17:43:54.349 INFO [stderr]    |     ^^^
Dec 17 17:43:54.349 INFO [stderr] 
Dec 17 17:43:54.349 INFO [stderr] warning: variant is never constructed: `Set`
Dec 17 17:43:54.349 INFO [stderr]   --> src/main.rs:27:2
Dec 17 17:43:54.349 INFO [stderr]    |
Dec 17 17:43:54.349 INFO [stderr] 27 |     Set, // set - set a built-in function for this module or object.
Dec 17 17:43:54.349 INFO [stderr]    |     ^^^
Dec 17 17:43:54.349 INFO [stderr] 
Dec 17 17:43:54.396 INFO [stderr] warning: variable does not need to be mutable
Dec 17 17:43:54.396 INFO [stderr]   --> src/main.rs:44:6
Dec 17 17:43:54.396 INFO [stderr]    |
Dec 17 17:43:54.396 INFO [stderr] 44 |     let mut buf_reader = BufReader::new(file);
Dec 17 17:43:54.396 INFO [stderr]    |         ----^^^^^^^^^^
Dec 17 17:43:54.396 INFO [stderr]    |         |
Dec 17 17:43:54.396 INFO [stderr]    |         help: remove this `mut`
Dec 17 17:43:54.396 INFO [stderr]    |
Dec 17 17:43:54.396 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 17:43:54.396 INFO [stderr] 
Dec 17 17:43:54.396 INFO [stderr] warning: variant is never constructed: `Mod`
Dec 17 17:43:54.396 INFO [stderr]   --> src/main.rs:18:2
Dec 17 17:43:54.396 INFO [stderr]    |
Dec 17 17:43:54.396 INFO [stderr] 18 |     Mod, // mod - module exports
Dec 17 17:43:54.396 INFO [stderr]    |     ^^^
Dec 17 17:43:54.396 INFO [stderr]    |
Dec 17 17:43:54.396 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 17:43:54.396 INFO [stderr] 
Dec 17 17:43:54.396 INFO [stderr] warning: variant is never constructed: `Obj`
Dec 17 17:43:54.396 INFO [stderr]   --> src/main.rs:19:2
Dec 17 17:43:54.396 INFO [stderr]    |
Dec 17 17:43:54.396 INFO [stderr] 19 |     Obj, // obj - object exports
Dec 17 17:43:54.396 INFO [stderr]    |     ^^^
Dec 17 17:43:54.396 INFO [stderr] 
Dec 17 17:43:54.396 INFO [stderr] warning: variant is never constructed: `Dep`
Dec 17 17:43:54.396 INFO [stderr]   --> src/main.rs:20:2
Dec 17 17:43:54.396 INFO [stderr]    |
Dec 17 17:43:54.396 INFO [stderr] 20 |     Dep, // dep - dependency imports
Dec 17 17:43:54.396 INFO [stderr]    |     ^^^
Dec 17 17:43:54.396 INFO [stderr] 
Dec 17 17:43:54.396 INFO [stderr] warning: variant is never constructed: `Fun`
Dec 17 17:43:54.396 INFO [stderr]   --> src/main.rs:21:2
Dec 17 17:43:54.396 INFO [stderr]    |
Dec 17 17:43:54.396 INFO [stderr] 21 |     Fun, // fun - function
Dec 17 17:43:54.396 INFO [stderr]    |     ^^^
Dec 17 17:43:54.396 INFO [stderr] 
Dec 17 17:43:54.396 INFO [stderr] warning: variant is never constructed: `Var`
Dec 17 17:43:54.396 INFO [stderr]   --> src/main.rs:22:2
Dec 17 17:43:54.396 INFO [stderr]    |
Dec 17 17:43:54.396 INFO [stderr] 22 |     Var, // var - variable
Dec 17 17:43:54.396 INFO [stderr]    |     ^^^
Dec 17 17:43:54.396 INFO [stderr] 
Dec 17 17:43:54.396 INFO [stderr] warning: variant is never constructed: `Con`
Dec 17 17:43:54.396 INFO [stderr]   --> src/main.rs:23:2
Dec 17 17:43:54.396 INFO [stderr]    |
Dec 17 17:43:54.396 INFO [stderr] 23 |     Con, // con - constant
Dec 17 17:43:54.396 INFO [stderr]    |     ^^^
Dec 17 17:43:54.396 INFO [stderr] 
Dec 17 17:43:54.396 INFO [stderr] warning: variant is never constructed: `Mac`
Dec 17 17:43:54.396 INFO [stderr]   --> src/main.rs:24:2
Dec 17 17:43:54.396 INFO [stderr]    |
Dec 17 17:43:54.396 INFO [stderr] 24 |     Mac, // mac - macro
Dec 17 17:43:54.396 INFO [stderr]    |     ^^^
Dec 17 17:43:54.396 INFO [stderr] 
Dec 17 17:43:54.396 INFO [stderr] warning: variant is never constructed: `Ffi`
Dec 17 17:43:54.396 INFO [stderr]   --> src/main.rs:25:2
Dec 17 17:43:54.396 INFO [stderr]    |
Dec 17 17:43:54.396 INFO [stderr] 25 |     Ffi, // ffi - foreign function interface
Dec 17 17:43:54.396 INFO [stderr]    |     ^^^
Dec 17 17:43:54.396 INFO [stderr] 
Dec 17 17:43:54.396 INFO [stderr] warning: variant is never constructed: `Fvi`
Dec 17 17:43:54.396 INFO [stderr]   --> src/main.rs:26:2
Dec 17 17:43:54.396 INFO [stderr]    |
Dec 17 17:43:54.396 INFO [stderr] 26 |     Fvi, // fvi - foreign variable interface
Dec 17 17:43:54.396 INFO [stderr]    |     ^^^
Dec 17 17:43:54.396 INFO [stderr] 
Dec 17 17:43:54.396 INFO [stderr] warning: variant is never constructed: `Set`
Dec 17 17:43:54.396 INFO [stderr]   --> src/main.rs:27:2
Dec 17 17:43:54.396 INFO [stderr]    |
Dec 17 17:43:54.396 INFO [stderr] 27 |     Set, // set - set a built-in function for this module or object.
Dec 17 17:43:54.396 INFO [stderr]    |     ^^^
Dec 17 17:43:54.396 INFO [stderr] 
Dec 17 17:43:54.408 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.26s
Dec 17 17:43:54.700 INFO running `"docker" "inspect" "984dde2babea8f52ff89c968ccf59b186f429c4f0e9cf57de222ee80453cd0a0"`
Dec 17 17:43:54.775 INFO running `"docker" "rm" "-f" "984dde2babea8f52ff89c968ccf59b186f429c4f0e9cf57de222ee80453cd0a0"`
Dec 17 17:43:54.976 INFO [stdout] 984dde2babea8f52ff89c968ccf59b186f429c4f0e9cf57de222ee80453cd0a0