[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-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/ohira-ryoji/ruststudy"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/ohira-ryoji/ruststudy'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ohira-ryoji/ruststudy" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/ohira-ryoji/ruststudy"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/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#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ohira-ryoji/ruststudy on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-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-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/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-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/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" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking ohira-ryoji/ruststudy against master#452087b4bf18cece2d52d7cd8c9147195e5404bf for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-7/master#452087b4bf18cece2d52d7cd8c9147195e5404bf:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/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" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 64f9731035c16f2290cbaa57c1d26e92525223dae540a2bfcf614d3fb4005e8b
[INFO] running `"docker" "start" "-a" "64f9731035c16f2290cbaa57c1d26e92525223dae540a2bfcf614d3fb4005e8b"`
[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 1.14s
[INFO] running `"docker" "inspect" "64f9731035c16f2290cbaa57c1d26e92525223dae540a2bfcf614d3fb4005e8b"`
[INFO] running `"docker" "rm" "-f" "64f9731035c16f2290cbaa57c1d26e92525223dae540a2bfcf614d3fb4005e8b"`
[INFO] [stdout] 64f9731035c16f2290cbaa57c1d26e92525223dae540a2bfcf614d3fb4005e8b