Dec 17 14:48:29.133 INFO checking stan4cb/rust-tools against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 14:48:29.133 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 14:48:29.399 INFO [stdout] 2a591455d3986f3a42ee4eb8a21ac78e54a0cbe89bbc2ab20d791c194de4c515
Dec 17 14:48:29.401 INFO running `"docker" "start" "-a" "2a591455d3986f3a42ee4eb8a21ac78e54a0cbe89bbc2ab20d791c194de4c515"`
Dec 17 14:48:30.912 INFO [stderr]     Checking rust-tools v0.1.0 (/opt/crater/workdir)
Dec 17 14:48:31.027 INFO [stderr] warning: unused import: `Write`
Dec 17 14:48:31.027 INFO [stderr]  --> src/main.rs:2:21
Dec 17 14:48:31.027 INFO [stderr]   |
Dec 17 14:48:31.027 INFO [stderr] 2 | use std::io::{Read, Write, Seek, SeekFrom};
Dec 17 14:48:31.027 INFO [stderr]   |                     ^^^^^
Dec 17 14:48:31.027 INFO [stderr]   |
Dec 17 14:48:31.027 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 14:48:31.027 INFO [stderr] 
Dec 17 14:48:31.027 INFO [stderr] warning: unused import: `Read`
Dec 17 14:48:31.027 INFO [stderr]  --> src/tools.rs:3:15
Dec 17 14:48:31.027 INFO [stderr]   |
Dec 17 14:48:31.027 INFO [stderr] 3 | use std::io::{Read, Write};
Dec 17 14:48:31.027 INFO [stderr]   |               ^^^^
Dec 17 14:48:31.027 INFO [stderr] 
Dec 17 14:48:31.030 INFO [stderr] warning: unused import: `Write`
Dec 17 14:48:31.030 INFO [stderr]  --> src/main.rs:2:21
Dec 17 14:48:31.030 INFO [stderr]   |
Dec 17 14:48:31.030 INFO [stderr] 2 | use std::io::{Read, Write, Seek, SeekFrom};
Dec 17 14:48:31.030 INFO [stderr]   |                     ^^^^^
Dec 17 14:48:31.030 INFO [stderr]   |
Dec 17 14:48:31.030 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 14:48:31.030 INFO [stderr] 
Dec 17 14:48:31.030 INFO [stderr] warning: unused import: `Read`
Dec 17 14:48:31.030 INFO [stderr]  --> src/tools.rs:3:15
Dec 17 14:48:31.030 INFO [stderr]   |
Dec 17 14:48:31.030 INFO [stderr] 3 | use std::io::{Read, Write};
Dec 17 14:48:31.030 INFO [stderr]   |               ^^^^
Dec 17 14:48:31.030 INFO [stderr] 
Dec 17 14:48:31.128 INFO [stderr] warning: unused variable: `res`
Dec 17 14:48:31.128 INFO [stderr]    --> src/main.rs:135:24
Dec 17 14:48:31.128 INFO [stderr]     |
Dec 17 14:48:31.128 INFO [stderr] 135 |                     Ok(res) => {
Dec 17 14:48:31.128 INFO [stderr]     |                        ^^^ help: consider using `_res` instead
Dec 17 14:48:31.128 INFO [stderr]     |
Dec 17 14:48:31.128 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 17 14:48:31.128 INFO [stderr] 
Dec 17 14:48:31.131 INFO [stderr] warning: unused variable: `res`
Dec 17 14:48:31.131 INFO [stderr]    --> src/main.rs:135:24
Dec 17 14:48:31.131 INFO [stderr]     |
Dec 17 14:48:31.131 INFO [stderr] 135 |                     Ok(res) => {
Dec 17 14:48:31.131 INFO [stderr]     |                        ^^^ help: consider using `_res` instead
Dec 17 14:48:31.131 INFO [stderr]     |
Dec 17 14:48:31.131 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 17 14:48:31.131 INFO [stderr] 
Dec 17 14:48:31.163 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 14:48:31.163 INFO [stderr]    --> src/main.rs:131:17
Dec 17 14:48:31.163 INFO [stderr]     |
Dec 17 14:48:31.163 INFO [stderr] 131 |                 file.read_exact(&mut x);
Dec 17 14:48:31.163 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:48:31.163 INFO [stderr]     |
Dec 17 14:48:31.163 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 14:48:31.163 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 14:48:31.163 INFO [stderr] 
Dec 17 14:48:31.165 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 14:48:31.165 INFO [stderr]    --> src/main.rs:138:25
Dec 17 14:48:31.165 INFO [stderr]     |
Dec 17 14:48:31.165 INFO [stderr] 138 |                         file.read_exact(&mut a);
Dec 17 14:48:31.165 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:48:31.165 INFO [stderr]     |
Dec 17 14:48:31.165 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 14:48:31.165 INFO [stderr] 
Dec 17 14:48:31.165 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 14:48:31.165 INFO [stderr]    --> src/main.rs:141:25
Dec 17 14:48:31.165 INFO [stderr]     |
Dec 17 14:48:31.165 INFO [stderr] 141 |                         file.read_exact(&mut a);
Dec 17 14:48:31.165 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:48:31.165 INFO [stderr]     |
Dec 17 14:48:31.165 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 14:48:31.165 INFO [stderr] 
Dec 17 14:48:31.166 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 14:48:31.166 INFO [stderr]    --> src/main.rs:144:25
Dec 17 14:48:31.166 INFO [stderr]     |
Dec 17 14:48:31.166 INFO [stderr] 144 |                         file.read_exact(&mut a);
Dec 17 14:48:31.166 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:48:31.166 INFO [stderr]     |
Dec 17 14:48:31.166 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 14:48:31.166 INFO [stderr] 
Dec 17 14:48:31.169 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 14:48:31.169 INFO [stderr]    --> src/main.rs:131:17
Dec 17 14:48:31.169 INFO [stderr]     |
Dec 17 14:48:31.169 INFO [stderr] 131 |                 file.read_exact(&mut x);
Dec 17 14:48:31.169 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:48:31.169 INFO [stderr]     |
Dec 17 14:48:31.169 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 14:48:31.169 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 14:48:31.169 INFO [stderr] 
Dec 17 14:48:31.169 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 14:48:31.169 INFO [stderr]    --> src/main.rs:138:25
Dec 17 14:48:31.169 INFO [stderr]     |
Dec 17 14:48:31.169 INFO [stderr] 138 |                         file.read_exact(&mut a);
Dec 17 14:48:31.169 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:48:31.169 INFO [stderr]     |
Dec 17 14:48:31.169 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 14:48:31.169 INFO [stderr] 
Dec 17 14:48:31.169 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 14:48:31.169 INFO [stderr]    --> src/main.rs:141:25
Dec 17 14:48:31.169 INFO [stderr]     |
Dec 17 14:48:31.169 INFO [stderr] 141 |                         file.read_exact(&mut a);
Dec 17 14:48:31.169 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:48:31.169 INFO [stderr]     |
Dec 17 14:48:31.169 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 14:48:31.169 INFO [stderr] 
Dec 17 14:48:31.169 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 14:48:31.169 INFO [stderr]    --> src/main.rs:144:25
Dec 17 14:48:31.169 INFO [stderr]     |
Dec 17 14:48:31.169 INFO [stderr] 144 |                         file.read_exact(&mut a);
Dec 17 14:48:31.169 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:48:31.169 INFO [stderr]     |
Dec 17 14:48:31.169 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 14:48:31.169 INFO [stderr] 
Dec 17 14:48:31.183 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.28s
Dec 17 14:48:31.452 INFO running `"docker" "inspect" "2a591455d3986f3a42ee4eb8a21ac78e54a0cbe89bbc2ab20d791c194de4c515"`
Dec 17 14:48:31.499 INFO running `"docker" "rm" "-f" "2a591455d3986f3a42ee4eb8a21ac78e54a0cbe89bbc2ab20d791c194de4c515"`
Dec 17 14:48:31.572 INFO [stdout] 2a591455d3986f3a42ee4eb8a21ac78e54a0cbe89bbc2ab20d791c194de4c515