[INFO] fetching crate failchain 0.1015.2...
[INFO] extracting crate failchain 0.1015.2 into work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/reg/failchain/0.1015.2
[INFO] extracting crate failchain 0.1015.2 into work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/reg/failchain/0.1015.2
[INFO] validating manifest of failchain-0.1015.2 on toolchain master#a850a426491e14186af2250549bf41256b5938d2
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of failchain-0.1015.2 on toolchain try#06a150c7d11500b41499224f165e9de1de096768
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing failchain-0.1015.2
[INFO] finished frobbing failchain-0.1015.2
[INFO] frobbed toml for failchain-0.1015.2 written to work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/reg/failchain/0.1015.2/Cargo.toml
[INFO] started frobbing failchain-0.1015.2
[INFO] finished frobbing failchain-0.1015.2
[INFO] frobbed toml for failchain-0.1015.2 written to work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/reg/failchain/0.1015.2/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking failchain-0.1015.2 against master#a850a426491e14186af2250549bf41256b5938d2 for pr-60162
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60162/worker-1/master#a850a426491e14186af2250549bf41256b5938d2:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/reg/failchain/0.1015.2:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+a850a426491e14186af2250549bf41256b5938d2-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 47e098e3314cf351c3e953b7f046ff8888ca3d651efb2e1f44e43aebd326898d
[INFO] running `"docker" "start" "-a" "47e098e3314cf351c3e953b7f046ff8888ca3d651efb2e1f44e43aebd326898d"`
[INFO] [stderr]     Checking failchain v0.1015.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `wad_file`
[INFO] [stderr]   --> examples/main.rs:71:13
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let wad_file = File::open(wad).chain_err(|| ErrorKind::WadIo(wad.to_owned()))?;
[INFO] [stderr]    |             ^^^^^^^^ help: consider prefixing with an underscore: `_wad_file`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `metadata_file`
[INFO] [stderr]   --> examples/main.rs:77:13
[INFO] [stderr]    |
[INFO] [stderr] 77 |         let metadata_file = File::open(metadata)
[INFO] [stderr]    |             ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_metadata_file`
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Result`
[INFO] [stderr]   --> examples/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub type Result<T> = StdResult<T, Error>;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `MetadataIo`
[INFO] [stderr]   --> examples/main.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |         MetadataIo(PathBuf),
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CorruptMetadata`
[INFO] [stderr]   --> examples/main.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         CorruptMetadata(String),
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `WadIo`
[INFO] [stderr]   --> examples/main.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |         WadIo(PathBuf),
[INFO] [stderr]    |         ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CorruptWad`
[INFO] [stderr]   --> examples/main.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |         CorruptWad(String),
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `validate_metadata`
[INFO] [stderr]   --> examples/main.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn validate_metadata(path: &Path, metadata: &str) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `load`
[INFO] [stderr]   --> examples/main.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 |     fn load(wad: &Path, metadata: &Path) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.69s
[INFO] running `"docker" "inspect" "47e098e3314cf351c3e953b7f046ff8888ca3d651efb2e1f44e43aebd326898d"`
[INFO] running `"docker" "rm" "-f" "47e098e3314cf351c3e953b7f046ff8888ca3d651efb2e1f44e43aebd326898d"`
[INFO] [stdout] 47e098e3314cf351c3e953b7f046ff8888ca3d651efb2e1f44e43aebd326898d