[INFO] updating cached repository https://github.com/dotrungkien/rust-guessing-game
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3dfbcf67c7449bb53baa8df5800c11f1dd42fa95
[INFO] testing dotrungkien/rust-guessing-game against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdotrungkien%2Frust-guessing-game" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dotrungkien/rust-guessing-game on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/dotrungkien/rust-guessing-game
[INFO] finished tweaking git repo https://github.com/dotrungkien/rust-guessing-game
[INFO] tweaked toml for git repo https://github.com/dotrungkien/rust-guessing-game written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/dotrungkien/rust-guessing-game already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] f9bdde6c8d950caa106d6503fafd03aae9237a1ded7df249abab9d6ce5393547
[INFO] running `"docker" "start" "-a" "f9bdde6c8d950caa106d6503fafd03aae9237a1ded7df249abab9d6ce5393547"`
[INFO] [stderr]    Compiling guessing-game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> src/main.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 |             .read_line((&mut guess))
[INFO] [stderr]    |                        ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `"docker" "inspect" "f9bdde6c8d950caa106d6503fafd03aae9237a1ded7df249abab9d6ce5393547"`
[INFO] running `"docker" "rm" "-f" "f9bdde6c8d950caa106d6503fafd03aae9237a1ded7df249abab9d6ce5393547"`
[INFO] [stdout] f9bdde6c8d950caa106d6503fafd03aae9237a1ded7df249abab9d6ce5393547
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 761d536f59488d4f5ea05e66a0b02c060cab62ceef61913883be93c447e47d79
[INFO] running `"docker" "start" "-a" "761d536f59488d4f5ea05e66a0b02c060cab62ceef61913883be93c447e47d79"`
[INFO] [stderr]    Compiling guessing-game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> src/main.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 |             .read_line((&mut guess))
[INFO] [stderr]    |                        ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `"docker" "inspect" "761d536f59488d4f5ea05e66a0b02c060cab62ceef61913883be93c447e47d79"`
[INFO] running `"docker" "rm" "-f" "761d536f59488d4f5ea05e66a0b02c060cab62ceef61913883be93c447e47d79"`
[INFO] [stdout] 761d536f59488d4f5ea05e66a0b02c060cab62ceef61913883be93c447e47d79
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 4f01d090ac62ae0f1a17e94847ed209812ba35cb090d63f62f1fc17aa9250508
[INFO] running `"docker" "start" "-a" "4f01d090ac62ae0f1a17e94847ed209812ba35cb090d63f62f1fc17aa9250508"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/guessing_game-da604fb09f507d21
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "4f01d090ac62ae0f1a17e94847ed209812ba35cb090d63f62f1fc17aa9250508"`
[INFO] running `"docker" "rm" "-f" "4f01d090ac62ae0f1a17e94847ed209812ba35cb090d63f62f1fc17aa9250508"`
[INFO] [stdout] 4f01d090ac62ae0f1a17e94847ed209812ba35cb090d63f62f1fc17aa9250508