Dec 11 08:57:16.821 INFO checking stan4cb/rust-tools against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 08:57:16.822 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-0/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 11 08:57:17.076 INFO [stdout] 2b3e3aa0b8368e7460271393bc06fbef0d5f5b76515c97e7911eb258da31c48c
Dec 11 08:57:17.078 INFO running `"docker" "start" "-a" "2b3e3aa0b8368e7460271393bc06fbef0d5f5b76515c97e7911eb258da31c48c"`
Dec 11 08:57:17.972 INFO [stderr] usermod: no changes
Dec 11 08:57:17.996 INFO [stderr]     Checking rust-tools v0.1.0 (/source)
Dec 11 08:57:18.220 INFO [stderr] warning: unused import: `Write`
Dec 11 08:57:18.221 INFO [stderr]  --> src/main.rs:2:21
Dec 11 08:57:18.221 INFO [stderr]   |
Dec 11 08:57:18.221 INFO [stderr] 2 | use std::io::{Read, Write, Seek, SeekFrom};
Dec 11 08:57:18.221 INFO [stderr]   |                     ^^^^^
Dec 11 08:57:18.222 INFO [stderr]   |
Dec 11 08:57:18.222 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 08:57:18.223 INFO [stderr] 
Dec 11 08:57:18.223 INFO [stderr] warning: unused import: `Read`
Dec 11 08:57:18.223 INFO [stderr]  --> src/tools.rs:3:15
Dec 11 08:57:18.223 INFO [stderr]   |
Dec 11 08:57:18.224 INFO [stderr] 3 | use std::io::{Read, Write};
Dec 11 08:57:18.224 INFO [stderr]   |               ^^^^
Dec 11 08:57:18.224 INFO [stderr] 
Dec 11 08:57:18.249 INFO [stderr] warning: unused import: `Write`
Dec 11 08:57:18.249 INFO [stderr]  --> src/main.rs:2:21
Dec 11 08:57:18.250 INFO [stderr]   |
Dec 11 08:57:18.250 INFO [stderr] 2 | use std::io::{Read, Write, Seek, SeekFrom};
Dec 11 08:57:18.250 INFO [stderr]   |                     ^^^^^
Dec 11 08:57:18.250 INFO [stderr]   |
Dec 11 08:57:18.250 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 08:57:18.250 INFO [stderr] 
Dec 11 08:57:18.250 INFO [stderr] warning: unused import: `Read`
Dec 11 08:57:18.250 INFO [stderr]  --> src/tools.rs:3:15
Dec 11 08:57:18.250 INFO [stderr]   |
Dec 11 08:57:18.250 INFO [stderr] 3 | use std::io::{Read, Write};
Dec 11 08:57:18.252 INFO [stderr]   |               ^^^^
Dec 11 08:57:18.252 INFO [stderr] 
Dec 11 08:57:18.350 INFO [stderr] warning: unused variable: `res`
Dec 11 08:57:18.350 INFO [stderr]    --> src/main.rs:135:24
Dec 11 08:57:18.350 INFO [stderr]     |
Dec 11 08:57:18.350 INFO [stderr] 135 |                     Ok(res) => {
Dec 11 08:57:18.350 INFO [stderr]     |                        ^^^ help: consider using `_res` instead
Dec 11 08:57:18.350 INFO [stderr]     |
Dec 11 08:57:18.350 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 11 08:57:18.350 INFO [stderr] 
Dec 11 08:57:18.357 INFO [stderr] warning: unused variable: `res`
Dec 11 08:57:18.357 INFO [stderr]    --> src/main.rs:135:24
Dec 11 08:57:18.357 INFO [stderr]     |
Dec 11 08:57:18.358 INFO [stderr] 135 |                     Ok(res) => {
Dec 11 08:57:18.358 INFO [stderr]     |                        ^^^ help: consider using `_res` instead
Dec 11 08:57:18.358 INFO [stderr]     |
Dec 11 08:57:18.358 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 11 08:57:18.358 INFO [stderr] 
Dec 11 08:57:18.404 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 08:57:18.404 INFO [stderr]    --> src/main.rs:131:17
Dec 11 08:57:18.404 INFO [stderr]     |
Dec 11 08:57:18.404 INFO [stderr] 131 |                 file.read_exact(&mut x);
Dec 11 08:57:18.404 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 08:57:18.404 INFO [stderr]     |
Dec 11 08:57:18.404 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 08:57:18.404 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 08:57:18.404 INFO [stderr] 
Dec 11 08:57:18.405 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 08:57:18.405 INFO [stderr]    --> src/main.rs:138:25
Dec 11 08:57:18.405 INFO [stderr]     |
Dec 11 08:57:18.405 INFO [stderr] 138 |                         file.read_exact(&mut a);
Dec 11 08:57:18.405 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 08:57:18.405 INFO [stderr]     |
Dec 11 08:57:18.405 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 08:57:18.405 INFO [stderr] 
Dec 11 08:57:18.406 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 08:57:18.406 INFO [stderr]    --> src/main.rs:141:25
Dec 11 08:57:18.406 INFO [stderr]     |
Dec 11 08:57:18.406 INFO [stderr] 141 |                         file.read_exact(&mut a);
Dec 11 08:57:18.406 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 08:57:18.406 INFO [stderr]     |
Dec 11 08:57:18.406 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 08:57:18.406 INFO [stderr] 
Dec 11 08:57:18.406 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 08:57:18.406 INFO [stderr]    --> src/main.rs:144:25
Dec 11 08:57:18.406 INFO [stderr]     |
Dec 11 08:57:18.406 INFO [stderr] 144 |                         file.read_exact(&mut a);
Dec 11 08:57:18.406 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 08:57:18.406 INFO [stderr]     |
Dec 11 08:57:18.406 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 08:57:18.406 INFO [stderr] 
Dec 11 08:57:18.410 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 08:57:18.410 INFO [stderr]    --> src/main.rs:131:17
Dec 11 08:57:18.410 INFO [stderr]     |
Dec 11 08:57:18.410 INFO [stderr] 131 |                 file.read_exact(&mut x);
Dec 11 08:57:18.410 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 08:57:18.410 INFO [stderr]     |
Dec 11 08:57:18.412 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 08:57:18.412 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 08:57:18.412 INFO [stderr] 
Dec 11 08:57:18.413 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 08:57:18.413 INFO [stderr]    --> src/main.rs:138:25
Dec 11 08:57:18.413 INFO [stderr]     |
Dec 11 08:57:18.413 INFO [stderr] 138 |                         file.read_exact(&mut a);
Dec 11 08:57:18.413 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 08:57:18.413 INFO [stderr]     |
Dec 11 08:57:18.414 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 08:57:18.414 INFO [stderr] 
Dec 11 08:57:18.414 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 08:57:18.414 INFO [stderr]    --> src/main.rs:141:25
Dec 11 08:57:18.414 INFO [stderr]     |
Dec 11 08:57:18.414 INFO [stderr] 141 |                         file.read_exact(&mut a);
Dec 11 08:57:18.414 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 08:57:18.414 INFO [stderr]     |
Dec 11 08:57:18.414 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 08:57:18.414 INFO [stderr] 
Dec 11 08:57:18.414 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 08:57:18.414 INFO [stderr]    --> src/main.rs:144:25
Dec 11 08:57:18.414 INFO [stderr]     |
Dec 11 08:57:18.414 INFO [stderr] 144 |                         file.read_exact(&mut a);
Dec 11 08:57:18.414 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 08:57:18.414 INFO [stderr]     |
Dec 11 08:57:18.414 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 08:57:18.414 INFO [stderr] 
Dec 11 08:57:18.435 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
Dec 11 08:57:18.437 INFO [stderr] su: No module specific data is present
Dec 11 08:57:18.813 INFO running `"docker" "inspect" "2b3e3aa0b8368e7460271393bc06fbef0d5f5b76515c97e7911eb258da31c48c"`
Dec 11 08:57:18.930 INFO running `"docker" "rm" "-f" "2b3e3aa0b8368e7460271393bc06fbef0d5f5b76515c97e7911eb258da31c48c"`
Dec 11 08:57:19.042 INFO [stdout] 2b3e3aa0b8368e7460271393bc06fbef0d5f5b76515c97e7911eb258da31c48c