[INFO] cloning repository yiwang/guessing_game
[INFO] running `"git" "clone" "--bare" "git://github.com/yiwang/guessing_game.git" "work/cache/sources/gh/yiwang/guessing_game"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/yiwang/guessing_game'...
[INFO] running `"git" "clone" "work/cache/sources/gh/yiwang/guessing_game" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/yiwang/guessing_game"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/yiwang/guessing_game'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yiwang/guessing_game" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/yiwang/guessing_game"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/yiwang/guessing_game'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5e70a599ab4a0eaeee5d459492729b31a4c4d3fb
[INFO] sha for GitHub repo yiwang/guessing_game: 5e70a599ab4a0eaeee5d459492729b31a4c4d3fb
[INFO] validating manifest of yiwang/guessing_game on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of yiwang/guessing_game on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing yiwang/guessing_game
[INFO] finished frobbing yiwang/guessing_game
[INFO] frobbed toml for yiwang/guessing_game written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/yiwang/guessing_game/Cargo.toml
[INFO] started frobbing yiwang/guessing_game
[INFO] finished frobbing yiwang/guessing_game
[INFO] frobbed toml for yiwang/guessing_game written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/yiwang/guessing_game/Cargo.toml
[INFO] crate yiwang/guessing_game has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking yiwang/guessing_game against master#c0086b9e8972fef9fd4af24bae20d45021ed06c6 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-7/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/yiwang/guessing_game:/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" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c76e9f39a39d0a6299616a226b19136c9e4cb9fe32dcb2705da3a1559a8e13a8
[INFO] running `"docker" "start" "-a" "c76e9f39a39d0a6299616a226b19136c9e4cb9fe32dcb2705da3a1559a8e13a8"`
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking guessing_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.79s
[INFO] running `"docker" "inspect" "c76e9f39a39d0a6299616a226b19136c9e4cb9fe32dcb2705da3a1559a8e13a8"`
[INFO] running `"docker" "rm" "-f" "c76e9f39a39d0a6299616a226b19136c9e4cb9fe32dcb2705da3a1559a8e13a8"`
[INFO] [stdout] c76e9f39a39d0a6299616a226b19136c9e4cb9fe32dcb2705da3a1559a8e13a8