[INFO] updating cached repository MatevzFa/class2json
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/MatevzFa/class2json
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/MatevzFa/class2json" "work/ex/pr-57501/sources/master#6ecad338381cc3b8d56e2df22e5971a598eddd6c/gh/MatevzFa/class2json"`
[INFO] [stderr] Cloning into 'work/ex/pr-57501/sources/master#6ecad338381cc3b8d56e2df22e5971a598eddd6c/gh/MatevzFa/class2json'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/MatevzFa/class2json" "work/ex/pr-57501/sources/try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f/gh/MatevzFa/class2json"`
[INFO] [stderr] Cloning into 'work/ex/pr-57501/sources/try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f/gh/MatevzFa/class2json'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 263c2b38b0762650bcacf526740cbbe9bfa62422
[INFO] sha for GitHub repo MatevzFa/class2json: 263c2b38b0762650bcacf526740cbbe9bfa62422
[INFO] validating manifest of MatevzFa/class2json on toolchain master#6ecad338381cc3b8d56e2df22e5971a598eddd6c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ecad338381cc3b8d56e2df22e5971a598eddd6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of MatevzFa/class2json on toolchain try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f789154f114767b2d0cb9c5b6c592cb3a635e6f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing MatevzFa/class2json
[INFO] finished frobbing MatevzFa/class2json
[INFO] frobbed toml for MatevzFa/class2json written to work/ex/pr-57501/sources/master#6ecad338381cc3b8d56e2df22e5971a598eddd6c/gh/MatevzFa/class2json/Cargo.toml
[INFO] started frobbing MatevzFa/class2json
[INFO] finished frobbing MatevzFa/class2json
[INFO] frobbed toml for MatevzFa/class2json written to work/ex/pr-57501/sources/try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f/gh/MatevzFa/class2json/Cargo.toml
[INFO] crate MatevzFa/class2json has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ecad338381cc3b8d56e2df22e5971a598eddd6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f789154f114767b2d0cb9c5b6c592cb3a635e6f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking MatevzFa/class2json against try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f for pr-57501
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57501/worker-2/try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57501/sources/try#5f789154f114767b2d0cb9c5b6c592cb3a635e6f/gh/MatevzFa/class2json:/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" "+5f789154f114767b2d0cb9c5b6c592cb3a635e6f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d5b5d7d372173dbd178dc13b0126bb73754207adef41430223b9dbb780bcdc78
[INFO] running `"docker" "start" "-a" "d5b5d7d372173dbd178dc13b0126bb73754207adef41430223b9dbb780bcdc78"`
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]     Checking class2json v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `value`
[INFO] [stderr]    --> src/class_file/constant_pool.rs:189:5
[INFO] [stderr] warning: method is never used: `value`
[INFO] [stderr]    --> src/class_file/constant_pool.rs:189:5
[INFO] [stderr]     |
[INFO] [stderr] 189 |     fn value(&self) -> u8 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     |
[INFO] [stderr] 189 |     fn value(&self) -> u8 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.94s
[INFO] running `"docker" "inspect" "d5b5d7d372173dbd178dc13b0126bb73754207adef41430223b9dbb780bcdc78"`
[INFO] running `"docker" "rm" "-f" "d5b5d7d372173dbd178dc13b0126bb73754207adef41430223b9dbb780bcdc78"`
[INFO] [stdout] d5b5d7d372173dbd178dc13b0126bb73754207adef41430223b9dbb780bcdc78