[INFO] updating cached repository plopgrizzly/nahar
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/plopgrizzly/nahar
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/plopgrizzly/nahar" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/plopgrizzly/nahar"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/plopgrizzly/nahar'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/plopgrizzly/nahar" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/plopgrizzly/nahar"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/plopgrizzly/nahar'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d66610b1ba0b4cc4333d1f4feb3a7266bbdea857
[INFO] sha for GitHub repo plopgrizzly/nahar: d66610b1ba0b4cc4333d1f4feb3a7266bbdea857
[INFO] validating manifest of plopgrizzly/nahar on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of plopgrizzly/nahar on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing plopgrizzly/nahar
[INFO] finished frobbing plopgrizzly/nahar
[INFO] frobbed toml for plopgrizzly/nahar written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/plopgrizzly/nahar/Cargo.toml
[INFO] started frobbing plopgrizzly/nahar
[INFO] finished frobbing plopgrizzly/nahar
[INFO] frobbed toml for plopgrizzly/nahar written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/plopgrizzly/nahar/Cargo.toml
[INFO] crate plopgrizzly/nahar already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking plopgrizzly/nahar against try#99a7498759a22b5684caf798a98b7e90ad9d2443 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-4/try#99a7498759a22b5684caf798a98b7e90ad9d2443:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/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" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a44abcdb9c3e9dee3de8c5d890f8ed2f4ca40b2f6b73045545e8a2022afa96b2
[INFO] running `"docker" "start" "-a" "a44abcdb9c3e9dee3de8c5d890f8ed2f4ca40b2f6b73045545e8a2022afa96b2"`
[INFO] [stderr]     Checking nr v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:44:6
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let mut buf_reader = BufReader::new(file);
[INFO] [stderr]    |         ----^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Mod`
[INFO] [stderr]   --> src/main.rs:18:2
[INFO] [stderr]    |
[INFO] [stderr] 18 |     Mod, // mod - module exports
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Obj`
[INFO] [stderr]   --> src/main.rs:19:2
[INFO] [stderr]    |
[INFO] [stderr] 19 |     Obj, // obj - object exports
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Dep`
[INFO] [stderr]   --> src/main.rs:20:2
[INFO] [stderr]    |
[INFO] [stderr] 20 |     Dep, // dep - dependency imports
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Fun`
[INFO] [stderr]   --> src/main.rs:21:2
[INFO] [stderr]    |
[INFO] [stderr] 21 |     Fun, // fun - function
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Var`
[INFO] [stderr]   --> src/main.rs:22:2
[INFO] [stderr]    |
[INFO] [stderr] 22 |     Var, // var - variable
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Con`
[INFO] [stderr]   --> src/main.rs:23:2
[INFO] [stderr]    |
[INFO] [stderr] 23 |     Con, // con - constant
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Mac`
[INFO] [stderr]   --> src/main.rs:24:2
[INFO] [stderr]    |
[INFO] [stderr] 24 |     Mac, // mac - macro
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Ffi`
[INFO] [stderr]   --> src/main.rs:25:2
[INFO] [stderr]    |
[INFO] [stderr] 25 |     Ffi, // ffi - foreign function interface
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Fvi`
[INFO] [stderr]   --> src/main.rs:26:2
[INFO] [stderr]    |
[INFO] [stderr] 26 |     Fvi, // fvi - foreign variable interface
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Set`
[INFO] [stderr]   --> src/main.rs:27:2
[INFO] [stderr]    |
[INFO] [stderr] 27 |     Set, // set - set a built-in function for this module or object.
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:44:6
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let mut buf_reader = BufReader::new(file);
[INFO] [stderr]    |         ----^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Mod`
[INFO] [stderr]   --> src/main.rs:18:2
[INFO] [stderr]    |
[INFO] [stderr] 18 |     Mod, // mod - module exports
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Obj`
[INFO] [stderr]   --> src/main.rs:19:2
[INFO] [stderr]    |
[INFO] [stderr] 19 |     Obj, // obj - object exports
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Dep`
[INFO] [stderr]   --> src/main.rs:20:2
[INFO] [stderr]    |
[INFO] [stderr] 20 |     Dep, // dep - dependency imports
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Fun`
[INFO] [stderr]   --> src/main.rs:21:2
[INFO] [stderr]    |
[INFO] [stderr] 21 |     Fun, // fun - function
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Var`
[INFO] [stderr]   --> src/main.rs:22:2
[INFO] [stderr]    |
[INFO] [stderr] 22 |     Var, // var - variable
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Con`
[INFO] [stderr]   --> src/main.rs:23:2
[INFO] [stderr]    |
[INFO] [stderr] 23 |     Con, // con - constant
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Mac`
[INFO] [stderr]   --> src/main.rs:24:2
[INFO] [stderr]    |
[INFO] [stderr] 24 |     Mac, // mac - macro
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Ffi`
[INFO] [stderr]   --> src/main.rs:25:2
[INFO] [stderr]    |
[INFO] [stderr] 25 |     Ffi, // ffi - foreign function interface
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Fvi`
[INFO] [stderr]   --> src/main.rs:26:2
[INFO] [stderr]    |
[INFO] [stderr] 26 |     Fvi, // fvi - foreign variable interface
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Set`
[INFO] [stderr]   --> src/main.rs:27:2
[INFO] [stderr]    |
[INFO] [stderr] 27 |     Set, // set - set a built-in function for this module or object.
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `"docker" "inspect" "a44abcdb9c3e9dee3de8c5d890f8ed2f4ca40b2f6b73045545e8a2022afa96b2"`
[INFO] running `"docker" "rm" "-f" "a44abcdb9c3e9dee3de8c5d890f8ed2f4ca40b2f6b73045545e8a2022afa96b2"`
[INFO] [stdout] a44abcdb9c3e9dee3de8c5d890f8ed2f4ca40b2f6b73045545e8a2022afa96b2