[INFO] updating cached repository https://github.com/ohira-ryoji/ruststudy
[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] 94e17609be4bed64895a29efb3afe4b07a436ea1
[INFO] testing ohira-ryoji/ruststudy against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fohira-ryoji%2Fruststudy" "work/builds/worker-0/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ohira-ryoji/ruststudy 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/ohira-ryoji/ruststudy
[INFO] finished tweaking git repo https://github.com/ohira-ryoji/ruststudy
[INFO] tweaked toml for git repo https://github.com/ohira-ryoji/ruststudy written to work/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/ohira-ryoji/ruststudy 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-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/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] a83b85acf4b9238e2ac44565326316584d6aec6dc62258bf17d5ee4491fce3c4
[INFO] running `"docker" "start" "-a" "a83b85acf4b9238e2ac44565326316584d6aec6dc62258bf17d5ee4491fce3c4"`
[INFO] [stderr]    Compiling study v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: value assigned to `y` is never read
[INFO] [stderr]  --> src/sample01.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 |         let mut y = x;
[INFO] [stderr]   |                 ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `"docker" "inspect" "a83b85acf4b9238e2ac44565326316584d6aec6dc62258bf17d5ee4491fce3c4"`
[INFO] running `"docker" "rm" "-f" "a83b85acf4b9238e2ac44565326316584d6aec6dc62258bf17d5ee4491fce3c4"`
[INFO] [stdout] a83b85acf4b9238e2ac44565326316584d6aec6dc62258bf17d5ee4491fce3c4
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/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] 968b459ce7041a935a468859455fa0a1ff5ad73606cca72b3f8486479a721024
[INFO] running `"docker" "start" "-a" "968b459ce7041a935a468859455fa0a1ff5ad73606cca72b3f8486479a721024"`
[INFO] [stderr]    Compiling study v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: value assigned to `y` is never read
[INFO] [stderr]  --> src/sample01.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 |         let mut y = x;
[INFO] [stderr]   |                 ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `"docker" "inspect" "968b459ce7041a935a468859455fa0a1ff5ad73606cca72b3f8486479a721024"`
[INFO] running `"docker" "rm" "-f" "968b459ce7041a935a468859455fa0a1ff5ad73606cca72b3f8486479a721024"`
[INFO] [stdout] 968b459ce7041a935a468859455fa0a1ff5ad73606cca72b3f8486479a721024
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/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] 4bf4999ddc59601d480651a59ebbea2e47c79a6f91bfbb360dc2df732ea9d2e9
[INFO] running `"docker" "start" "-a" "4bf4999ddc59601d480651a59ebbea2e47c79a6f91bfbb360dc2df732ea9d2e9"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/study-31bddc983163f1b1
[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] [stderr]      Running /opt/rustwide/target/debug/deps/study-3b57fce15c5b97b6
[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] [stderr]    Doc-tests study
[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" "4bf4999ddc59601d480651a59ebbea2e47c79a6f91bfbb360dc2df732ea9d2e9"`
[INFO] running `"docker" "rm" "-f" "4bf4999ddc59601d480651a59ebbea2e47c79a6f91bfbb360dc2df732ea9d2e9"`
[INFO] [stdout] 4bf4999ddc59601d480651a59ebbea2e47c79a6f91bfbb360dc2df732ea9d2e9