[INFO] crate frunk_core 0.3.0 is already in cache
[INFO] extracting crate frunk_core 0.3.0 into work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/frunk_core/0.3.0
[INFO] extracting crate frunk_core 0.3.0 into work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/frunk_core/0.3.0
[INFO] validating manifest of frunk_core-0.3.0 on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of frunk_core-0.3.0 on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing frunk_core-0.3.0
[INFO] finished frobbing frunk_core-0.3.0
[INFO] frobbed toml for frunk_core-0.3.0 written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/frunk_core/0.3.0/Cargo.toml
[INFO] started frobbing frunk_core-0.3.0
[INFO] finished frobbing frunk_core-0.3.0
[INFO] frobbed toml for frunk_core-0.3.0 written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/frunk_core/0.3.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking frunk_core-0.3.0 against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-3/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/frunk_core/0.3.0:/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" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8edaf5f02bf8329298f93749fb751361000233f5b218cc45e0ff359e393df7c2
[INFO] running `"docker" "start" "-a" "8edaf5f02bf8329298f93749fb751361000233f5b218cc45e0ff359e393df7c2"`
[INFO] [stderr]    Compiling frunk_core v0.2.4
[INFO] [stderr]     Checking frunk_core v0.3.0 (/opt/crater/workdir)
[INFO] [stderr]    Compiling frunk_proc_macro_helpers v0.0.2
[INFO] [stderr]    Compiling frunk_proc_macros_impl v0.0.2
[INFO] [stderr]    Compiling frunk_derives v0.2.4
[INFO] [stderr]     Checking frunk_proc_macros v0.0.2
[INFO] [stderr]     Checking frunk v0.2.4
[INFO] [stderr] warning: unused variable: `res`
[INFO] [stderr]     --> src/coproduct.rs:1125:21
[INFO] [stderr]      |
[INFO] [stderr] 1125 |                 let res: Result<CNil, _> = cnil.subset();
[INFO] [stderr]      |                     ^^^ help: consider prefixing with an underscore: `_res`
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.50s
[INFO] running `"docker" "inspect" "8edaf5f02bf8329298f93749fb751361000233f5b218cc45e0ff359e393df7c2"`
[INFO] running `"docker" "rm" "-f" "8edaf5f02bf8329298f93749fb751361000233f5b218cc45e0ff359e393df7c2"`
[INFO] [stdout] 8edaf5f02bf8329298f93749fb751361000233f5b218cc45e0ff359e393df7c2