Dec 19 08:13:58.844 INFO checking stan4cb/rust-tools against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 08:13:58.844 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-3/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/stan4cb/rust-tools:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 08:13:59.054 INFO [stdout] ee9d072dd9b29303021b5c3c77bf3cb15dee36d41de4d7794611f0993667a2b2
Dec 19 08:13:59.058 INFO running `"docker" "start" "-a" "ee9d072dd9b29303021b5c3c77bf3cb15dee36d41de4d7794611f0993667a2b2"`
Dec 19 08:14:00.012 INFO [stderr]     Checking rust-tools v0.1.0 (/opt/crater/workdir)
Dec 19 08:14:00.124 INFO [stderr] warning: unused import: `Write`
Dec 19 08:14:00.124 INFO [stderr]  --> src/main.rs:2:21
Dec 19 08:14:00.124 INFO [stderr]   |
Dec 19 08:14:00.124 INFO [stderr] 2 | use std::io::{Read, Write, Seek, SeekFrom};
Dec 19 08:14:00.124 INFO [stderr]   |                     ^^^^^
Dec 19 08:14:00.124 INFO [stderr]   |
Dec 19 08:14:00.124 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 08:14:00.124 INFO [stderr] 
Dec 19 08:14:00.132 INFO [stderr] warning: unused import: `Read`
Dec 19 08:14:00.132 INFO [stderr]  --> src/tools.rs:3:15
Dec 19 08:14:00.132 INFO [stderr]   |
Dec 19 08:14:00.132 INFO [stderr] 3 | use std::io::{Read, Write};
Dec 19 08:14:00.132 INFO [stderr]   |               ^^^^
Dec 19 08:14:00.132 INFO [stderr] 
Dec 19 08:14:00.137 INFO [stderr] warning: unused import: `Write`
Dec 19 08:14:00.138 INFO [stderr]  --> src/main.rs:2:21
Dec 19 08:14:00.138 INFO [stderr]   |
Dec 19 08:14:00.138 INFO [stderr] 2 | use std::io::{Read, Write, Seek, SeekFrom};
Dec 19 08:14:00.138 INFO [stderr]   |                     ^^^^^
Dec 19 08:14:00.138 INFO [stderr]   |
Dec 19 08:14:00.138 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 08:14:00.138 INFO [stderr] 
Dec 19 08:14:00.138 INFO [stderr] warning: unused import: `Read`
Dec 19 08:14:00.138 INFO [stderr]  --> src/tools.rs:3:15
Dec 19 08:14:00.138 INFO [stderr]   |
Dec 19 08:14:00.138 INFO [stderr] 3 | use std::io::{Read, Write};
Dec 19 08:14:00.138 INFO [stderr]   |               ^^^^
Dec 19 08:14:00.138 INFO [stderr] 
Dec 19 08:14:00.232 INFO [stderr] warning: unused variable: `res`
Dec 19 08:14:00.232 INFO [stderr]    --> src/main.rs:135:24
Dec 19 08:14:00.232 INFO [stderr]     |
Dec 19 08:14:00.232 INFO [stderr] 135 |                     Ok(res) => {
Dec 19 08:14:00.232 INFO [stderr]     |                        ^^^ help: consider using `_res` instead
Dec 19 08:14:00.232 INFO [stderr]     |
Dec 19 08:14:00.232 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 19 08:14:00.232 INFO [stderr] 
Dec 19 08:14:00.253 INFO [stderr] warning: unused variable: `res`
Dec 19 08:14:00.253 INFO [stderr]    --> src/main.rs:135:24
Dec 19 08:14:00.253 INFO [stderr]     |
Dec 19 08:14:00.253 INFO [stderr] 135 |                     Ok(res) => {
Dec 19 08:14:00.253 INFO [stderr]     |                        ^^^ help: consider using `_res` instead
Dec 19 08:14:00.253 INFO [stderr]     |
Dec 19 08:14:00.253 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 19 08:14:00.253 INFO [stderr] 
Dec 19 08:14:00.268 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 08:14:00.268 INFO [stderr]    --> src/main.rs:131:17
Dec 19 08:14:00.268 INFO [stderr]     |
Dec 19 08:14:00.269 INFO [stderr] 131 |                 file.read_exact(&mut x);
Dec 19 08:14:00.269 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:14:00.269 INFO [stderr]     |
Dec 19 08:14:00.269 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 08:14:00.269 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 08:14:00.269 INFO [stderr] 
Dec 19 08:14:00.269 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 08:14:00.269 INFO [stderr]    --> src/main.rs:138:25
Dec 19 08:14:00.269 INFO [stderr]     |
Dec 19 08:14:00.269 INFO [stderr] 138 |                         file.read_exact(&mut a);
Dec 19 08:14:00.269 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:14:00.269 INFO [stderr]     |
Dec 19 08:14:00.269 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 08:14:00.269 INFO [stderr] 
Dec 19 08:14:00.270 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 08:14:00.270 INFO [stderr]    --> src/main.rs:141:25
Dec 19 08:14:00.270 INFO [stderr]     |
Dec 19 08:14:00.271 INFO [stderr] 141 |                         file.read_exact(&mut a);
Dec 19 08:14:00.271 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:14:00.271 INFO [stderr]     |
Dec 19 08:14:00.271 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 08:14:00.271 INFO [stderr] 
Dec 19 08:14:00.272 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 08:14:00.272 INFO [stderr]    --> src/main.rs:144:25
Dec 19 08:14:00.272 INFO [stderr]     |
Dec 19 08:14:00.273 INFO [stderr] 144 |                         file.read_exact(&mut a);
Dec 19 08:14:00.273 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:14:00.273 INFO [stderr]     |
Dec 19 08:14:00.274 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 08:14:00.274 INFO [stderr] 
Dec 19 08:14:00.300 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 08:14:00.300 INFO [stderr]    --> src/main.rs:131:17
Dec 19 08:14:00.300 INFO [stderr]     |
Dec 19 08:14:00.300 INFO [stderr] 131 |                 file.read_exact(&mut x);
Dec 19 08:14:00.300 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:14:00.300 INFO [stderr]     |
Dec 19 08:14:00.300 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 08:14:00.300 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 08:14:00.300 INFO [stderr] 
Dec 19 08:14:00.300 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 08:14:00.300 INFO [stderr]    --> src/main.rs:138:25
Dec 19 08:14:00.300 INFO [stderr]     |
Dec 19 08:14:00.300 INFO [stderr] 138 |                         file.read_exact(&mut a);
Dec 19 08:14:00.300 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:14:00.300 INFO [stderr]     |
Dec 19 08:14:00.300 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 08:14:00.300 INFO [stderr] 
Dec 19 08:14:00.300 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 08:14:00.300 INFO [stderr]    --> src/main.rs:141:25
Dec 19 08:14:00.300 INFO [stderr]     |
Dec 19 08:14:00.300 INFO [stderr] 141 |                         file.read_exact(&mut a);
Dec 19 08:14:00.301 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:14:00.301 INFO [stderr]     |
Dec 19 08:14:00.301 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 08:14:00.301 INFO [stderr] 
Dec 19 08:14:00.301 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 08:14:00.301 INFO [stderr]    --> src/main.rs:144:25
Dec 19 08:14:00.301 INFO [stderr]     |
Dec 19 08:14:00.301 INFO [stderr] 144 |                         file.read_exact(&mut a);
Dec 19 08:14:00.301 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:14:00.301 INFO [stderr]     |
Dec 19 08:14:00.301 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 08:14:00.301 INFO [stderr] 
Dec 19 08:14:00.331 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.33s
Dec 19 08:14:00.936 INFO running `"docker" "inspect" "ee9d072dd9b29303021b5c3c77bf3cb15dee36d41de4d7794611f0993667a2b2"`
Dec 19 08:14:01.146 INFO running `"docker" "rm" "-f" "ee9d072dd9b29303021b5c3c77bf3cb15dee36d41de4d7794611f0993667a2b2"`
Dec 19 08:14:01.359 INFO [stdout] ee9d072dd9b29303021b5c3c77bf3cb15dee36d41de4d7794611f0993667a2b2