[INFO] updating cached repository wezm/serde-duplicate-field
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/wezm/serde-duplicate-field
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/wezm/serde-duplicate-field" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/wezm/serde-duplicate-field"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/wezm/serde-duplicate-field'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/wezm/serde-duplicate-field" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/wezm/serde-duplicate-field"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/wezm/serde-duplicate-field'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6cd23ec38321f71c5dcecceb7c52c1daf82da5c1
[INFO] sha for GitHub repo wezm/serde-duplicate-field: 6cd23ec38321f71c5dcecceb7c52c1daf82da5c1
[INFO] validating manifest of wezm/serde-duplicate-field on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of wezm/serde-duplicate-field on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing wezm/serde-duplicate-field
[INFO] finished frobbing wezm/serde-duplicate-field
[INFO] frobbed toml for wezm/serde-duplicate-field written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/wezm/serde-duplicate-field/Cargo.toml
[INFO] started frobbing wezm/serde-duplicate-field
[INFO] finished frobbing wezm/serde-duplicate-field
[INFO] frobbed toml for wezm/serde-duplicate-field written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/wezm/serde-duplicate-field/Cargo.toml
[INFO] crate wezm/serde-duplicate-field already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking wezm/serde-duplicate-field against master#0f88167f89fffe321590c5148f21b7d51d44388d for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-4/master#0f88167f89fffe321590c5148f21b7d51d44388d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/wezm/serde-duplicate-field:/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" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 0cfd6f13ec2163e1a0b283ad8d1f081d961f06b9d2aff784a3df1a68b5bb4154
[INFO] running `"docker" "start" "-a" "0cfd6f13ec2163e1a0b283ad8d1f081d961f06b9d2aff784a3df1a68b5bb4154"`
[INFO] [stderr]     Checking serde v1.0.36
[INFO] [stderr]    Compiling syn v0.12.15
[INFO] [stderr]    Compiling serde_derive_internals v0.22.2
[INFO] [stderr]    Compiling serde_derive v1.0.36
[INFO] [stderr]     Checking serde_json v1.0.13
[INFO] [stderr]     Checking serde-duplicate-field v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.15s
[INFO] running `"docker" "inspect" "0cfd6f13ec2163e1a0b283ad8d1f081d961f06b9d2aff784a3df1a68b5bb4154"`
[INFO] running `"docker" "rm" "-f" "0cfd6f13ec2163e1a0b283ad8d1f081d961f06b9d2aff784a3df1a68b5bb4154"`
[INFO] [stdout] 0cfd6f13ec2163e1a0b283ad8d1f081d961f06b9d2aff784a3df1a68b5bb4154