[INFO] updating cached repository adambrenecki/yorick
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/adambrenecki/yorick
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/adambrenecki/yorick" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/adambrenecki/yorick"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/adambrenecki/yorick'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/adambrenecki/yorick" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/adambrenecki/yorick"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/adambrenecki/yorick'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] aee35e5509473e7671dd4eb192c1b7ba1a93b720
[INFO] sha for GitHub repo adambrenecki/yorick: aee35e5509473e7671dd4eb192c1b7ba1a93b720
[INFO] validating manifest of adambrenecki/yorick on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of adambrenecki/yorick on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing adambrenecki/yorick
[INFO] finished frobbing adambrenecki/yorick
[INFO] frobbed toml for adambrenecki/yorick written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/adambrenecki/yorick/Cargo.toml
[INFO] started frobbing adambrenecki/yorick
[INFO] finished frobbing adambrenecki/yorick
[INFO] frobbed toml for adambrenecki/yorick written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/adambrenecki/yorick/Cargo.toml
[INFO] crate adambrenecki/yorick already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking adambrenecki/yorick against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-4/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/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" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2937b77d5e47fa0e72a012829931f748dd22b822c98fcfe0397c93262136e9e6
[INFO] running `"docker" "start" "-a" "2937b77d5e47fa0e72a012829931f748dd22b822c98fcfe0397c93262136e9e6"`
[INFO] [stderr]     Checking same-file v1.0.0
[INFO] [stderr]     Checking maplit v1.0.0
[INFO] [stderr]     Checking toml v0.4.5
[INFO] [stderr]     Checking tempdir v0.3.5
[INFO] [stderr]     Checking walkdir v2.0.1
[INFO] [stderr]     Checking yorick v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/skeleton.rs:3:40
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::{BufReader, Read, Result, Write};
[INFO] [stderr]   |                                        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `create_dir`
[INFO] [stderr]  --> src/skeleton.rs:4:21
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::fs::{File, create_dir};
[INFO] [stderr]   |                     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/skeleton.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tempdir::TempDir`
[INFO] [stderr]  --> src/skeleton.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use tempdir::TempDir;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]  --> src/output.rs:2:30
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::{Result, Write, Read};
[INFO] [stderr]   |                              ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tempdir::TempDir`
[INFO] [stderr]  --> src/output.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use tempdir::TempDir;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Deserialize`, `Deserializer`, `self`
[INFO] [stderr]  --> src/config.rs:1:17
[INFO] [stderr]   |
[INFO] [stderr] 1 | use serde::de::{self, Deserialize, Deserializer};
[INFO] [stderr]   |                 ^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `toml`
[INFO] [stderr]  --> src/config.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use toml;
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Deserialize`, `Deserializer`, `self`
[INFO] [stderr]  --> src/config.rs:1:17
[INFO] [stderr]   |
[INFO] [stderr] 1 | use serde::de::{self, Deserialize, Deserializer};
[INFO] [stderr]   |                 ^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |         file.contents().unwrap().read(contents);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     writer.write(b"Hello!");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |         file.contents().unwrap().read(contents);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     writer.write(b"Hello!");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.18s
[INFO] running `"docker" "inspect" "2937b77d5e47fa0e72a012829931f748dd22b822c98fcfe0397c93262136e9e6"`
[INFO] running `"docker" "rm" "-f" "2937b77d5e47fa0e72a012829931f748dd22b822c98fcfe0397c93262136e9e6"`
[INFO] [stdout] 2937b77d5e47fa0e72a012829931f748dd22b822c98fcfe0397c93262136e9e6