[INFO] updating cached repository https://github.com/plopgrizzly/nahar
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 79c2f45eadc39036ee6de276961155efe267470a
[INFO] checking plopgrizzly/nahar against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fplopgrizzly%2Fnahar" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/plopgrizzly/nahar on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/plopgrizzly/nahar
[INFO] finished tweaking git repo https://github.com/plopgrizzly/nahar
[INFO] tweaked toml for git repo https://github.com/plopgrizzly/nahar written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/plopgrizzly/nahar already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 07d012b2b1f4ac0321a7e99c8126231f8dab1ba0726fdede8c5e51fa9042cd21
[INFO] running `"docker" "start" "-a" "07d012b2b1f4ac0321a7e99c8126231f8dab1ba0726fdede8c5e51fa9042cd21"`
[INFO] [stderr]     Checking nr v0.1.0 (/opt/rustwide/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] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `"docker" "inspect" "07d012b2b1f4ac0321a7e99c8126231f8dab1ba0726fdede8c5e51fa9042cd21"`
[INFO] running `"docker" "rm" "-f" "07d012b2b1f4ac0321a7e99c8126231f8dab1ba0726fdede8c5e51fa9042cd21"`
[INFO] [stdout] 07d012b2b1f4ac0321a7e99c8126231f8dab1ba0726fdede8c5e51fa9042cd21