[INFO] crate panini 0.0.0 is already in cache
[INFO] extracting crate panini 0.0.0 into work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/panini/0.0.0
[INFO] extracting crate panini 0.0.0 into work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/panini/0.0.0
[INFO] validating manifest of panini-0.0.0 on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of panini-0.0.0 on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing panini-0.0.0
[INFO] finished frobbing panini-0.0.0
[INFO] frobbed toml for panini-0.0.0 written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/panini/0.0.0/Cargo.toml
[INFO] started frobbing panini-0.0.0
[INFO] finished frobbing panini-0.0.0
[INFO] frobbed toml for panini-0.0.0 written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/panini/0.0.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking panini-0.0.0 against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-6/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/panini/0.0.0:/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f55df7bc1a4415ebbb25f2df5411d61c3ec620254f03a18ee3cd73cf27bfe1c8
[INFO] running `"docker" "start" "-a" "f55df7bc1a4415ebbb25f2df5411d61c3ec620254f03a18ee3cd73cf27bfe1c8"`
[INFO] [stderr]     Checking optional v0.0.13
[INFO] [stderr]     Checking bit-matrix v0.2.0
[INFO] [stderr]     Checking cfg v0.3.0
[INFO] [stderr]     Checking gearley v0.0.1
[INFO] [stderr] warning[E0502]: cannot borrow `*self.g` as immutable because it is also borrowed as mutable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/gearley-0.0.1/src/recognizer.rs:113:64
[INFO] [stderr]     |
[INFO] [stderr] 107 |         let mut completions = self.completions();
[INFO] [stderr]     |                               ---- mutable borrow occurs here
[INFO] [stderr] 108 |         while let Some(mut completion) = completions.next_completion() {
[INFO] [stderr]     |                                          ----------- mutable borrow later used here
[INFO] [stderr] ...
[INFO] [stderr] 113 |             if completion.origin == 0 && completion.lhs_sym == self.g.start_sym() {
[INFO] [stderr]     |                                                                ^^^^^^ immutable borrow occurs here
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]     Checking panini v0.0.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.00s
[INFO] running `"docker" "inspect" "f55df7bc1a4415ebbb25f2df5411d61c3ec620254f03a18ee3cd73cf27bfe1c8"`
[INFO] running `"docker" "rm" "-f" "f55df7bc1a4415ebbb25f2df5411d61c3ec620254f03a18ee3cd73cf27bfe1c8"`
[INFO] [stdout] f55df7bc1a4415ebbb25f2df5411d61c3ec620254f03a18ee3cd73cf27bfe1c8