[INFO] updating cached repository c-o-l-o-r/serde-json-issue [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/c-o-l-o-r/serde-json-issue [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/c-o-l-o-r/serde-json-issue" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/c-o-l-o-r/serde-json-issue"` [INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/c-o-l-o-r/serde-json-issue'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/c-o-l-o-r/serde-json-issue" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/c-o-l-o-r/serde-json-issue"` [INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/c-o-l-o-r/serde-json-issue'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 933d3807891c259da2a2c3508d2ce3cfadcbc95b [INFO] sha for GitHub repo c-o-l-o-r/serde-json-issue: 933d3807891c259da2a2c3508d2ce3cfadcbc95b [INFO] validating manifest of c-o-l-o-r/serde-json-issue on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of c-o-l-o-r/serde-json-issue on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing c-o-l-o-r/serde-json-issue [INFO] finished frobbing c-o-l-o-r/serde-json-issue [INFO] frobbed toml for c-o-l-o-r/serde-json-issue written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/c-o-l-o-r/serde-json-issue/Cargo.toml [INFO] started frobbing c-o-l-o-r/serde-json-issue [INFO] finished frobbing c-o-l-o-r/serde-json-issue [INFO] frobbed toml for c-o-l-o-r/serde-json-issue written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/c-o-l-o-r/serde-json-issue/Cargo.toml [INFO] crate c-o-l-o-r/serde-json-issue already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking c-o-l-o-r/serde-json-issue against master#435236b8877cdb98c82eaebfb7887782277265c5 for pr-62849 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-0/master#435236b8877cdb98c82eaebfb7887782277265c5:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/c-o-l-o-r/serde-json-issue:/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" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 666bed72a812be32e5c47636d5016a6f458b587e4a654a45e98fb389df490893 [INFO] running `"docker" "start" "-a" "666bed72a812be32e5c47636d5016a6f458b587e4a654a45e98fb389df490893"` [INFO] [stderr] Compiling serde v1.0.92 [INFO] [stderr] Checking serde_json v1.0.39 [INFO] [stderr] Checking serde-json-issue v0.1.0 (/opt/crater/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 13.66s [INFO] running `"docker" "inspect" "666bed72a812be32e5c47636d5016a6f458b587e4a654a45e98fb389df490893"` [INFO] running `"docker" "rm" "-f" "666bed72a812be32e5c47636d5016a6f458b587e4a654a45e98fb389df490893"` [INFO] [stdout] 666bed72a812be32e5c47636d5016a6f458b587e4a654a45e98fb389df490893