[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-60944/sources/master#589beb979c0f1a9736e02e578913db88398c3ba5/gh/MatevzFa/class2json"`
[INFO] [stderr] Cloning into 'work/ex/pr-60944/sources/master#589beb979c0f1a9736e02e578913db88398c3ba5/gh/MatevzFa/class2json'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/MatevzFa/class2json" "work/ex/pr-60944/sources/try#42445ded8fd34235a676755cb5d079658ed51f6a/gh/MatevzFa/class2json"`
[INFO] [stderr] Cloning into 'work/ex/pr-60944/sources/try#42445ded8fd34235a676755cb5d079658ed51f6a/gh/MatevzFa/class2json'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7c6445bdd45b86cb9000477c01801094de176416
[INFO] sha for GitHub repo MatevzFa/class2json: 7c6445bdd45b86cb9000477c01801094de176416
[INFO] validating manifest of MatevzFa/class2json on toolchain master#589beb979c0f1a9736e02e578913db88398c3ba5
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+589beb979c0f1a9736e02e578913db88398c3ba5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of MatevzFa/class2json on toolchain try#42445ded8fd34235a676755cb5d079658ed51f6a
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+42445ded8fd34235a676755cb5d079658ed51f6a-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-60944/sources/master#589beb979c0f1a9736e02e578913db88398c3ba5/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-60944/sources/try#42445ded8fd34235a676755cb5d079658ed51f6a/gh/MatevzFa/class2json/Cargo.toml
[INFO] crate MatevzFa/class2json already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+589beb979c0f1a9736e02e578913db88398c3ba5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+42445ded8fd34235a676755cb5d079658ed51f6a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking MatevzFa/class2json against master#589beb979c0f1a9736e02e578913db88398c3ba5 for pr-60944
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60944/worker-7/master#589beb979c0f1a9736e02e578913db88398c3ba5:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60944/sources/master#589beb979c0f1a9736e02e578913db88398c3ba5/gh/MatevzFa/class2json:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+589beb979c0f1a9736e02e578913db88398c3ba5-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 42bfe70ee3e69973aa3ee7006088e418fb581b9d1e9ecaa69d675a5c6ecb2a39
[INFO] running `"docker" "start" "-a" "42bfe70ee3e69973aa3ee7006088e418fb581b9d1e9ecaa69d675a5c6ecb2a39"`
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]     Checking serde v1.0.89
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking erased-serde v0.3.9
[INFO] [stderr]     Checking class2json v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.98s
[INFO] running `"docker" "inspect" "42bfe70ee3e69973aa3ee7006088e418fb581b9d1e9ecaa69d675a5c6ecb2a39"`
[INFO] running `"docker" "rm" "-f" "42bfe70ee3e69973aa3ee7006088e418fb581b9d1e9ecaa69d675a5c6ecb2a39"`
[INFO] [stdout] 42bfe70ee3e69973aa3ee7006088e418fb581b9d1e9ecaa69d675a5c6ecb2a39