Dec 04 16:42:04.965 INFO checking jevankovich/rpncalc against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 16:42:04.965 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-5/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 04 16:42:05.326 INFO [stdout] bfd9c81795e145273a038997279a211b2cd7b4ff0a47bddf78311f61e72bde58
Dec 04 16:42:05.329 INFO running `"docker" "start" "-a" "bfd9c81795e145273a038997279a211b2cd7b4ff0a47bddf78311f61e72bde58"`
Dec 04 16:42:06.575 INFO [stderr] usermod: no changes
Dec 04 16:42:06.627 INFO [stderr]     Checking rpncalc v0.1.0 (/source)
Dec 04 16:42:07.191 INFO [stderr] warning: unused import: `std::collections::HashMap`
Dec 04 16:42:07.191 INFO [stderr]  --> src/main.rs:4:5
Dec 04 16:42:07.191 INFO [stderr]   |
Dec 04 16:42:07.191 INFO [stderr] 4 | use std::collections::HashMap;
Dec 04 16:42:07.191 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 16:42:07.191 INFO [stderr]   |
Dec 04 16:42:07.191 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 16:42:07.191 INFO [stderr] 
Dec 04 16:42:07.191 INFO [stderr] warning: unused import: `std::rc::Rc`
Dec 04 16:42:07.191 INFO [stderr]  --> src/main.rs:5:5
Dec 04 16:42:07.191 INFO [stderr]   |
Dec 04 16:42:07.191 INFO [stderr] 5 | use std::rc::Rc;
Dec 04 16:42:07.191 INFO [stderr]   |     ^^^^^^^^^^^
Dec 04 16:42:07.191 INFO [stderr] 
Dec 04 16:42:07.215 INFO [stderr] warning: unused variable: `err`
Dec 04 16:42:07.215 INFO [stderr]   --> src/main.rs:45:17
Dec 04 16:42:07.215 INFO [stderr]    |
Dec 04 16:42:07.215 INFO [stderr] 45 |             Err(err) => println!("Unknown word: \"{}\"", word),
Dec 04 16:42:07.215 INFO [stderr]    |                 ^^^ help: consider using `_err` instead
Dec 04 16:42:07.215 INFO [stderr]    |
Dec 04 16:42:07.215 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 16:42:07.215 INFO [stderr] 
Dec 04 16:42:07.236 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 16:42:07.236 INFO [stderr]   --> src/main.rs:78:5
Dec 04 16:42:07.236 INFO [stderr]    |
Dec 04 16:42:07.236 INFO [stderr] 78 |     stdout.flush();
Dec 04 16:42:07.236 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 04 16:42:07.236 INFO [stderr]    |
Dec 04 16:42:07.236 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 16:42:07.236 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 16:42:07.236 INFO [stderr] 
Dec 04 16:42:07.236 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 16:42:07.236 INFO [stderr]   --> src/main.rs:87:9
Dec 04 16:42:07.236 INFO [stderr]    |
Dec 04 16:42:07.236 INFO [stderr] 87 |         stdout.flush();
Dec 04 16:42:07.236 INFO [stderr]    |         ^^^^^^^^^^^^^^^
Dec 04 16:42:07.236 INFO [stderr]    |
Dec 04 16:42:07.236 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 16:42:07.236 INFO [stderr] 
Dec 04 16:42:07.291 INFO [stderr] warning: unused import: `std::collections::HashMap`
Dec 04 16:42:07.291 INFO [stderr]  --> src/main.rs:4:5
Dec 04 16:42:07.291 INFO [stderr]   |
Dec 04 16:42:07.291 INFO [stderr] 4 | use std::collections::HashMap;
Dec 04 16:42:07.291 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 16:42:07.291 INFO [stderr]   |
Dec 04 16:42:07.291 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 16:42:07.291 INFO [stderr] 
Dec 04 16:42:07.291 INFO [stderr] warning: unused import: `std::rc::Rc`
Dec 04 16:42:07.291 INFO [stderr]  --> src/main.rs:5:5
Dec 04 16:42:07.291 INFO [stderr]   |
Dec 04 16:42:07.291 INFO [stderr] 5 | use std::rc::Rc;
Dec 04 16:42:07.291 INFO [stderr]   |     ^^^^^^^^^^^
Dec 04 16:42:07.291 INFO [stderr] 
Dec 04 16:42:07.331 INFO [stderr] warning: unused variable: `err`
Dec 04 16:42:07.331 INFO [stderr]   --> src/main.rs:45:17
Dec 04 16:42:07.331 INFO [stderr]    |
Dec 04 16:42:07.331 INFO [stderr] 45 |             Err(err) => println!("Unknown word: \"{}\"", word),
Dec 04 16:42:07.331 INFO [stderr]    |                 ^^^ help: consider using `_err` instead
Dec 04 16:42:07.331 INFO [stderr]    |
Dec 04 16:42:07.331 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 16:42:07.331 INFO [stderr] 
Dec 04 16:42:07.351 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 16:42:07.351 INFO [stderr]   --> src/main.rs:78:5
Dec 04 16:42:07.351 INFO [stderr]    |
Dec 04 16:42:07.351 INFO [stderr] 78 |     stdout.flush();
Dec 04 16:42:07.351 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 04 16:42:07.351 INFO [stderr]    |
Dec 04 16:42:07.351 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 16:42:07.351 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 16:42:07.351 INFO [stderr] 
Dec 04 16:42:07.352 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 16:42:07.352 INFO [stderr]   --> src/main.rs:87:9
Dec 04 16:42:07.352 INFO [stderr]    |
Dec 04 16:42:07.352 INFO [stderr] 87 |         stdout.flush();
Dec 04 16:42:07.352 INFO [stderr]    |         ^^^^^^^^^^^^^^^
Dec 04 16:42:07.352 INFO [stderr]    |
Dec 04 16:42:07.352 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 16:42:07.352 INFO [stderr] 
Dec 04 16:42:07.387 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
Dec 04 16:42:07.387 INFO [stderr] su: No module specific data is present
Dec 04 16:42:07.980 INFO running `"docker" "inspect" "bfd9c81795e145273a038997279a211b2cd7b4ff0a47bddf78311f61e72bde58"`
Dec 04 16:42:08.303 INFO running `"docker" "rm" "-f" "bfd9c81795e145273a038997279a211b2cd7b4ff0a47bddf78311f61e72bde58"`
Dec 04 16:42:08.491 INFO [stdout] bfd9c81795e145273a038997279a211b2cd7b4ff0a47bddf78311f61e72bde58