[INFO] cloning repository swashcap/guessing_game [INFO] running `"git" "clone" "--bare" "git://github.com/swashcap/guessing_game.git" "work/cache/sources/gh/swashcap/guessing_game"` [INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/swashcap/guessing_game'... [INFO] running `"git" "clone" "work/cache/sources/gh/swashcap/guessing_game" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/swashcap/guessing_game"` [INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/swashcap/guessing_game'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/swashcap/guessing_game" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/swashcap/guessing_game"` [INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/swashcap/guessing_game'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 7e844c13fc5ab855739781f784a625a6ee49d593 [INFO] sha for GitHub repo swashcap/guessing_game: 7e844c13fc5ab855739781f784a625a6ee49d593 [INFO] validating manifest of swashcap/guessing_game on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 [INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of swashcap/guessing_game on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049 [INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing swashcap/guessing_game [INFO] finished frobbing swashcap/guessing_game [INFO] frobbed toml for swashcap/guessing_game written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/swashcap/guessing_game/Cargo.toml [INFO] started frobbing swashcap/guessing_game [INFO] finished frobbing swashcap/guessing_game [INFO] frobbed toml for swashcap/guessing_game written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/swashcap/guessing_game/Cargo.toml [INFO] crate swashcap/guessing_game already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking swashcap/guessing_game against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008 [INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-6/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/swashcap/guessing_game:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 4e2af82ef76a93f94a6f6d4740e7f1d65391aecdd35d3a9c87f1c076d012ce05 [INFO] running `"docker" "start" "-a" "4e2af82ef76a93f94a6f6d4740e7f1d65391aecdd35d3a9c87f1c076d012ce05"` [INFO] [stderr] Checking rand v0.3.15 [INFO] [stderr] Checking guessing_game v0.1.0 (/opt/crater/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.74s [INFO] running `"docker" "inspect" "4e2af82ef76a93f94a6f6d4740e7f1d65391aecdd35d3a9c87f1c076d012ce05"` [INFO] running `"docker" "rm" "-f" "4e2af82ef76a93f94a6f6d4740e7f1d65391aecdd35d3a9c87f1c076d012ce05"` [INFO] [stdout] 4e2af82ef76a93f94a6f6d4740e7f1d65391aecdd35d3a9c87f1c076d012ce05