[INFO] crate panini 0.0.0 is already in cache
[INFO] extracting crate panini 0.0.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/panini/0.0.0
[INFO] extracting crate panini 0.0.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/panini/0.0.0
[INFO] validating manifest of panini-0.0.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of panini-0.0.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "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/beta-1.37-6/sources/1.36.0/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/beta-1.37-6/sources/beta-2019-07-23/reg/panini/0.0.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing panini-0.0.0 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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=warn" "-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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] cf18f2731e7155d33e1078bb773200b94c63bcd7293a9e15ac404c43181adbf2
[INFO] running `"docker" "start" "-a" "cf18f2731e7155d33e1078bb773200b94c63bcd7293a9e15ac404c43181adbf2"`
[INFO] [stderr]    Compiling 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] 
[INFO] [stderr]    Compiling panini v0.0.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.19s
[INFO] running `"docker" "inspect" "cf18f2731e7155d33e1078bb773200b94c63bcd7293a9e15ac404c43181adbf2"`
[INFO] running `"docker" "rm" "-f" "cf18f2731e7155d33e1078bb773200b94c63bcd7293a9e15ac404c43181adbf2"`
[INFO] [stdout] cf18f2731e7155d33e1078bb773200b94c63bcd7293a9e15ac404c43181adbf2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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=warn" "-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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 40a25031e664a1c6a3aa789ba85b3b0ed5e6921a377bdd184d12bf68a5f65160
[INFO] running `"docker" "start" "-a" "40a25031e664a1c6a3aa789ba85b3b0ed5e6921a377bdd184d12bf68a5f65160"`
[INFO] [stderr]    Compiling panini v0.0.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `"docker" "inspect" "40a25031e664a1c6a3aa789ba85b3b0ed5e6921a377bdd184d12bf68a5f65160"`
[INFO] running `"docker" "rm" "-f" "40a25031e664a1c6a3aa789ba85b3b0ed5e6921a377bdd184d12bf68a5f65160"`
[INFO] [stdout] 40a25031e664a1c6a3aa789ba85b3b0ed5e6921a377bdd184d12bf68a5f65160
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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=warn" "-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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 357aa709826930fd4b7d64d1e0a88d8bcbb0a7f947a43605c0eb178b39dd585b
[INFO] running `"docker" "start" "-a" "357aa709826930fd4b7d64d1e0a88d8bcbb0a7f947a43605c0eb178b39dd585b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/panini-4966fa7fe3b8c7a5
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests panini
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "357aa709826930fd4b7d64d1e0a88d8bcbb0a7f947a43605c0eb178b39dd585b"`
[INFO] running `"docker" "rm" "-f" "357aa709826930fd4b7d64d1e0a88d8bcbb0a7f947a43605c0eb178b39dd585b"`
[INFO] [stdout] 357aa709826930fd4b7d64d1e0a88d8bcbb0a7f947a43605c0eb178b39dd585b