Dec 17 22:23:38.868 INFO checking jevankovich/rpncalc against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 22:23:38.868 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/jevankovich/rpncalc:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 22:23:39.136 INFO [stdout] db29eff34e5c306d035a20e5f4d60593a325674e62fc5e0df0168c67382cf8b4
Dec 17 22:23:39.138 INFO running `"docker" "start" "-a" "db29eff34e5c306d035a20e5f4d60593a325674e62fc5e0df0168c67382cf8b4"`
Dec 17 22:23:40.113 INFO [stderr]     Checking rpncalc v0.1.0 (/opt/crater/workdir)
Dec 17 22:23:40.252 INFO [stderr] warning: unused import: `std::collections::HashMap`
Dec 17 22:23:40.252 INFO [stderr]  --> src/main.rs:4:5
Dec 17 22:23:40.252 INFO [stderr]   |
Dec 17 22:23:40.252 INFO [stderr] 4 | use std::collections::HashMap;
Dec 17 22:23:40.252 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 22:23:40.252 INFO [stderr]   |
Dec 17 22:23:40.252 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 22:23:40.252 INFO [stderr] 
Dec 17 22:23:40.252 INFO [stderr] warning: unused import: `std::rc::Rc`
Dec 17 22:23:40.252 INFO [stderr]  --> src/main.rs:5:5
Dec 17 22:23:40.252 INFO [stderr]   |
Dec 17 22:23:40.252 INFO [stderr] 5 | use std::rc::Rc;
Dec 17 22:23:40.252 INFO [stderr]   |     ^^^^^^^^^^^
Dec 17 22:23:40.252 INFO [stderr] 
Dec 17 22:23:40.296 INFO [stderr] warning: unused variable: `err`
Dec 17 22:23:40.296 INFO [stderr]   --> src/main.rs:45:17
Dec 17 22:23:40.296 INFO [stderr]    |
Dec 17 22:23:40.296 INFO [stderr] 45 |             Err(err) => println!("Unknown word: \"{}\"", word),
Dec 17 22:23:40.296 INFO [stderr]    |                 ^^^ help: consider using `_err` instead
Dec 17 22:23:40.296 INFO [stderr]    |
Dec 17 22:23:40.296 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 22:23:40.296 INFO [stderr] 
Dec 17 22:23:40.308 INFO [stderr] warning: unused import: `std::collections::HashMap`
Dec 17 22:23:40.308 INFO [stderr]  --> src/main.rs:4:5
Dec 17 22:23:40.308 INFO [stderr]   |
Dec 17 22:23:40.308 INFO [stderr] 4 | use std::collections::HashMap;
Dec 17 22:23:40.308 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 22:23:40.308 INFO [stderr]   |
Dec 17 22:23:40.308 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 22:23:40.308 INFO [stderr] 
Dec 17 22:23:40.308 INFO [stderr] warning: unused import: `std::rc::Rc`
Dec 17 22:23:40.308 INFO [stderr]  --> src/main.rs:5:5
Dec 17 22:23:40.308 INFO [stderr]   |
Dec 17 22:23:40.308 INFO [stderr] 5 | use std::rc::Rc;
Dec 17 22:23:40.308 INFO [stderr]   |     ^^^^^^^^^^^
Dec 17 22:23:40.308 INFO [stderr] 
Dec 17 22:23:40.308 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 22:23:40.308 INFO [stderr]   --> src/main.rs:78:5
Dec 17 22:23:40.308 INFO [stderr]    |
Dec 17 22:23:40.308 INFO [stderr] 78 |     stdout.flush();
Dec 17 22:23:40.308 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 17 22:23:40.308 INFO [stderr]    |
Dec 17 22:23:40.308 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 22:23:40.308 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 22:23:40.308 INFO [stderr] 
Dec 17 22:23:40.308 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 22:23:40.308 INFO [stderr]   --> src/main.rs:87:9
Dec 17 22:23:40.308 INFO [stderr]    |
Dec 17 22:23:40.308 INFO [stderr] 87 |         stdout.flush();
Dec 17 22:23:40.308 INFO [stderr]    |         ^^^^^^^^^^^^^^^
Dec 17 22:23:40.308 INFO [stderr]    |
Dec 17 22:23:40.308 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 22:23:40.308 INFO [stderr] 
Dec 17 22:23:40.344 INFO [stderr] warning: unused variable: `err`
Dec 17 22:23:40.344 INFO [stderr]   --> src/main.rs:45:17
Dec 17 22:23:40.344 INFO [stderr]    |
Dec 17 22:23:40.344 INFO [stderr] 45 |             Err(err) => println!("Unknown word: \"{}\"", word),
Dec 17 22:23:40.344 INFO [stderr]    |                 ^^^ help: consider using `_err` instead
Dec 17 22:23:40.344 INFO [stderr]    |
Dec 17 22:23:40.344 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 22:23:40.344 INFO [stderr] 
Dec 17 22:23:40.358 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 22:23:40.358 INFO [stderr]   --> src/main.rs:78:5
Dec 17 22:23:40.358 INFO [stderr]    |
Dec 17 22:23:40.358 INFO [stderr] 78 |     stdout.flush();
Dec 17 22:23:40.358 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 17 22:23:40.358 INFO [stderr]    |
Dec 17 22:23:40.358 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 22:23:40.358 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 22:23:40.358 INFO [stderr] 
Dec 17 22:23:40.358 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 22:23:40.358 INFO [stderr]   --> src/main.rs:87:9
Dec 17 22:23:40.358 INFO [stderr]    |
Dec 17 22:23:40.358 INFO [stderr] 87 |         stdout.flush();
Dec 17 22:23:40.358 INFO [stderr]    |         ^^^^^^^^^^^^^^^
Dec 17 22:23:40.358 INFO [stderr]    |
Dec 17 22:23:40.358 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 22:23:40.358 INFO [stderr] 
Dec 17 22:23:40.379 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.29s
Dec 17 22:23:40.742 INFO running `"docker" "inspect" "db29eff34e5c306d035a20e5f4d60593a325674e62fc5e0df0168c67382cf8b4"`
Dec 17 22:23:40.882 INFO running `"docker" "rm" "-f" "db29eff34e5c306d035a20e5f4d60593a325674e62fc5e0df0168c67382cf8b4"`
Dec 17 22:23:41.084 INFO [stdout] db29eff34e5c306d035a20e5f4d60593a325674e62fc5e0df0168c67382cf8b4