Dec 19 21:04:23.546 INFO checking adambrenecki/yorick against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 21:04:23.547 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/adambrenecki/yorick:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 21:04:23.931 INFO [stdout] 9322ad0385ce71d521a2ebb25cae1ff5ac179da0a1cace8e9751db7257112cde
Dec 19 21:04:23.934 INFO running `"docker" "start" "-a" "9322ad0385ce71d521a2ebb25cae1ff5ac179da0a1cace8e9751db7257112cde"`
Dec 19 21:04:25.100 INFO [stderr]     Checking maplit v1.0.0
Dec 19 21:04:25.110 INFO [stderr]     Checking toml v0.4.5
Dec 19 21:04:25.112 INFO [stderr]     Checking tempdir v0.3.5
Dec 19 21:04:27.180 INFO [stderr]     Checking yorick v0.1.0 (/opt/crater/workdir)
Dec 19 21:04:27.584 INFO [stderr] warning: unused `#[macro_use]` import
Dec 19 21:04:27.584 INFO [stderr]  --> src/main.rs:3:1
Dec 19 21:04:27.584 INFO [stderr]   |
Dec 19 21:04:27.584 INFO [stderr] 3 | #[macro_use]
Dec 19 21:04:27.584 INFO [stderr]   | ^^^^^^^^^^^^
Dec 19 21:04:27.584 INFO [stderr]   |
Dec 19 21:04:27.584 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 21:04:27.629 INFO [stderr] 
Dec 19 21:04:27.629 INFO [stderr] warning: unused import: `Write`
Dec 19 21:04:27.629 INFO [stderr]  --> src/skeleton.rs:3:40
Dec 19 21:04:27.629 INFO [stderr]   |
Dec 19 21:04:27.629 INFO [stderr] 3 | use std::io::{BufReader, Read, Result, Write};
Dec 19 21:04:27.629 INFO [stderr]   |                                        ^^^^^
Dec 19 21:04:27.629 INFO [stderr] 
Dec 19 21:04:27.629 INFO [stderr] warning: unused import: `create_dir`
Dec 19 21:04:27.629 INFO [stderr]  --> src/skeleton.rs:4:21
Dec 19 21:04:27.630 INFO [stderr]   |
Dec 19 21:04:27.630 INFO [stderr] 4 | use std::fs::{File, create_dir};
Dec 19 21:04:27.630 INFO [stderr]   |                     ^^^^^^^^^^
Dec 19 21:04:27.630 INFO [stderr] 
Dec 19 21:04:27.630 INFO [stderr] warning: unused import: `std::collections::HashMap`
Dec 19 21:04:27.630 INFO [stderr]  --> src/skeleton.rs:6:5
Dec 19 21:04:27.630 INFO [stderr]   |
Dec 19 21:04:27.630 INFO [stderr] 6 | use std::collections::HashMap;
Dec 19 21:04:27.630 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:04:27.630 INFO [stderr] 
Dec 19 21:04:27.630 INFO [stderr] warning: unused import: `tempdir::TempDir`
Dec 19 21:04:27.630 INFO [stderr]  --> src/skeleton.rs:7:5
Dec 19 21:04:27.630 INFO [stderr]   |
Dec 19 21:04:27.630 INFO [stderr] 7 | use tempdir::TempDir;
Dec 19 21:04:27.630 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 19 21:04:27.630 INFO [stderr] 
Dec 19 21:04:27.630 INFO [stderr] warning: unused import: `Read`
Dec 19 21:04:27.630 INFO [stderr]  --> src/output.rs:2:30
Dec 19 21:04:27.630 INFO [stderr]   |
Dec 19 21:04:27.630 INFO [stderr] 2 | use std::io::{Result, Write, Read};
Dec 19 21:04:27.630 INFO [stderr]   |                              ^^^^
Dec 19 21:04:27.630 INFO [stderr] 
Dec 19 21:04:27.630 INFO [stderr] warning: unused import: `tempdir::TempDir`
Dec 19 21:04:27.630 INFO [stderr]  --> src/output.rs:4:5
Dec 19 21:04:27.630 INFO [stderr]   |
Dec 19 21:04:27.630 INFO [stderr] 4 | use tempdir::TempDir;
Dec 19 21:04:27.630 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 19 21:04:27.630 INFO [stderr] 
Dec 19 21:04:27.630 INFO [stderr] warning: unused imports: `Deserialize`, `Deserializer`, `self`
Dec 19 21:04:27.630 INFO [stderr]  --> src/config.rs:1:17
Dec 19 21:04:27.630 INFO [stderr]   |
Dec 19 21:04:27.630 INFO [stderr] 1 | use serde::de::{self, Deserialize, Deserializer};
Dec 19 21:04:27.630 INFO [stderr]   |                 ^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^^
Dec 19 21:04:27.630 INFO [stderr] 
Dec 19 21:04:27.630 INFO [stderr] warning: unused import: `toml`
Dec 19 21:04:27.630 INFO [stderr]  --> src/config.rs:2:5
Dec 19 21:04:27.630 INFO [stderr]   |
Dec 19 21:04:27.630 INFO [stderr] 2 | use toml;
Dec 19 21:04:27.630 INFO [stderr]   |     ^^^^
Dec 19 21:04:27.630 INFO [stderr] 
Dec 19 21:04:27.648 INFO [stderr] warning: unused imports: `Deserialize`, `Deserializer`, `self`
Dec 19 21:04:27.648 INFO [stderr]  --> src/config.rs:1:17
Dec 19 21:04:27.648 INFO [stderr]   |
Dec 19 21:04:27.648 INFO [stderr] 1 | use serde::de::{self, Deserialize, Deserializer};
Dec 19 21:04:27.648 INFO [stderr]   |                 ^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^^
Dec 19 21:04:27.648 INFO [stderr]   |
Dec 19 21:04:27.648 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 21:04:27.648 INFO [stderr] 
Dec 19 21:04:27.911 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:04:27.911 INFO [stderr]   --> src/main.rs:24:9
Dec 19 21:04:27.911 INFO [stderr]    |
Dec 19 21:04:27.911 INFO [stderr] 24 |         file.contents().unwrap().read(contents);
Dec 19 21:04:27.911 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:04:27.911 INFO [stderr]    |
Dec 19 21:04:27.911 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 21:04:27.911 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:04:27.911 INFO [stderr] 
Dec 19 21:04:27.911 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:04:27.911 INFO [stderr]   --> src/main.rs:30:5
Dec 19 21:04:27.911 INFO [stderr]    |
Dec 19 21:04:27.912 INFO [stderr] 30 |     writer.write(b"Hello!");
Dec 19 21:04:27.912 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:04:27.912 INFO [stderr]    |
Dec 19 21:04:27.912 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:04:27.912 INFO [stderr] 
Dec 19 21:04:28.040 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:04:28.040 INFO [stderr]   --> src/main.rs:24:9
Dec 19 21:04:28.040 INFO [stderr]    |
Dec 19 21:04:28.040 INFO [stderr] 24 |         file.contents().unwrap().read(contents);
Dec 19 21:04:28.040 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:04:28.040 INFO [stderr]    |
Dec 19 21:04:28.040 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 21:04:28.040 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:04:28.040 INFO [stderr] 
Dec 19 21:04:28.040 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:04:28.040 INFO [stderr]   --> src/main.rs:30:5
Dec 19 21:04:28.040 INFO [stderr]    |
Dec 19 21:04:28.040 INFO [stderr] 30 |     writer.write(b"Hello!");
Dec 19 21:04:28.040 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:04:28.040 INFO [stderr]    |
Dec 19 21:04:28.040 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:04:28.040 INFO [stderr] 
Dec 19 21:04:28.072 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.03s
Dec 19 21:04:28.686 INFO running `"docker" "inspect" "9322ad0385ce71d521a2ebb25cae1ff5ac179da0a1cace8e9751db7257112cde"`
Dec 19 21:04:29.003 INFO running `"docker" "rm" "-f" "9322ad0385ce71d521a2ebb25cae1ff5ac179da0a1cace8e9751db7257112cde"`
Dec 19 21:04:29.192 INFO [stdout] 9322ad0385ce71d521a2ebb25cae1ff5ac179da0a1cace8e9751db7257112cde