[INFO] updating cached repository ohira-ryoji/ruststudy
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ohira-ryoji/ruststudy
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ohira-ryoji/ruststudy" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/ohira-ryoji/ruststudy"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/ohira-ryoji/ruststudy'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ohira-ryoji/ruststudy" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/ohira-ryoji/ruststudy"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/ohira-ryoji/ruststudy'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 94e17609be4bed64895a29efb3afe4b07a436ea1
[INFO] sha for GitHub repo ohira-ryoji/ruststudy: 94e17609be4bed64895a29efb3afe4b07a436ea1
[INFO] validating manifest of ohira-ryoji/ruststudy on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ohira-ryoji/ruststudy on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ohira-ryoji/ruststudy
[INFO] finished frobbing ohira-ryoji/ruststudy
[INFO] frobbed toml for ohira-ryoji/ruststudy written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/ohira-ryoji/ruststudy/Cargo.toml
[INFO] started frobbing ohira-ryoji/ruststudy
[INFO] finished frobbing ohira-ryoji/ruststudy
[INFO] frobbed toml for ohira-ryoji/ruststudy written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/ohira-ryoji/ruststudy/Cargo.toml
[INFO] crate ohira-ryoji/ruststudy already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ohira-ryoji/ruststudy against try#99a7498759a22b5684caf798a98b7e90ad9d2443 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-7/try#99a7498759a22b5684caf798a98b7e90ad9d2443:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/ohira-ryoji/ruststudy:/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" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] fa67bb4d7ba4873f3f4b657c4e8a1b81c163c1560b5692b78cd1a8471c2a10bf
[INFO] running `"docker" "start" "-a" "fa67bb4d7ba4873f3f4b657c4e8a1b81c163c1560b5692b78cd1a8471c2a10bf"`
[INFO] [stderr]     Checking study v0.1.0 (/opt/crater/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] 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 0.89s
[INFO] running `"docker" "inspect" "fa67bb4d7ba4873f3f4b657c4e8a1b81c163c1560b5692b78cd1a8471c2a10bf"`
[INFO] running `"docker" "rm" "-f" "fa67bb4d7ba4873f3f4b657c4e8a1b81c163c1560b5692b78cd1a8471c2a10bf"`
[INFO] [stdout] fa67bb4d7ba4873f3f4b657c4e8a1b81c163c1560b5692b78cd1a8471c2a10bf