[INFO] crate frunk_core 0.3.0 is already in cache
[INFO] extracting crate frunk_core 0.3.0 into work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/reg/frunk_core/0.3.0
[INFO] extracting crate frunk_core 0.3.0 into work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/reg/frunk_core/0.3.0
[INFO] validating manifest of frunk_core-0.3.0 on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of frunk_core-0.3.0 on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-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-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/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-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/reg/frunk_core/0.3.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking frunk_core-0.3.0 against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-7/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7da52dab17a11cb49f730fa1b9fc484c4f2eef36d74bc5b27572cbe43cf6300f
[INFO] running `"docker" "start" "-a" "7da52dab17a11cb49f730fa1b9fc484c4f2eef36d74bc5b27572cbe43cf6300f"`
[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 33.11s
[INFO] running `"docker" "inspect" "7da52dab17a11cb49f730fa1b9fc484c4f2eef36d74bc5b27572cbe43cf6300f"`
[INFO] running `"docker" "rm" "-f" "7da52dab17a11cb49f730fa1b9fc484c4f2eef36d74bc5b27572cbe43cf6300f"`
[INFO] [stdout] 7da52dab17a11cb49f730fa1b9fc484c4f2eef36d74bc5b27572cbe43cf6300f