[INFO] updating cached repository ahcometrue/rust-db
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ahcometrue/rust-db
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ahcometrue/rust-db" "work/ex/beta-1.38-1/sources/1.37.0/gh/ahcometrue/rust-db"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ahcometrue/rust-db'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ahcometrue/rust-db" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ahcometrue/rust-db"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ahcometrue/rust-db'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6df8b7e58210e8a37844f9db1d4cd7e9905c287d
[INFO] sha for GitHub repo ahcometrue/rust-db: 6df8b7e58210e8a37844f9db1d4cd7e9905c287d
[INFO] validating manifest of ahcometrue/rust-db on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ahcometrue/rust-db on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ahcometrue/rust-db
[INFO] finished frobbing ahcometrue/rust-db
[INFO] frobbed toml for ahcometrue/rust-db written to work/ex/beta-1.38-1/sources/1.37.0/gh/ahcometrue/rust-db/Cargo.toml
[INFO] started frobbing ahcometrue/rust-db
[INFO] finished frobbing ahcometrue/rust-db
[INFO] frobbed toml for ahcometrue/rust-db written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ahcometrue/rust-db/Cargo.toml
[INFO] crate ahcometrue/rust-db already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing ahcometrue/rust-db against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ahcometrue/rust-db:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 3c29dbf6f3c48cbc20aefd53292d5db8fb496d5975ffe46854f9d735d9b51ad6
[INFO] running `"docker" "start" "-a" "3c29dbf6f3c48cbc20aefd53292d5db8fb496d5975ffe46854f9d735d9b51ad6"`
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling serde v1.0.62
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]    Compiling regex v1.0.0
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]    Compiling bit-vec v0.5.0
[INFO] [stderr]    Compiling smallvec v0.6.1
[INFO] [stderr]    Compiling bufstream v0.1.3
[INFO] [stderr]    Compiling rust-ini v0.11.0
[INFO] [stderr]    Compiling md5 v0.3.7
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling regex-syntax v0.6.0
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling uuid v0.6.5
[INFO] [stderr]    Compiling net2 v0.2.32
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling bytes v0.4.8
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling idna v0.1.4
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling twox-hash v1.1.0
[INFO] [stderr]    Compiling flate2 v1.0.1
[INFO] [stderr]    Compiling url v1.7.0
[INFO] [stderr]    Compiling atoi v0.2.3
[INFO] [stderr]    Compiling chrono v0.4.2
[INFO] [stderr] warning[E0713]: borrow may still be in use when destructor runs
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.7.0/src/form_urlencoded.rs:261:40
[INFO] [stderr]     |
[INFO] [stderr] 259 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 260 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 261 |     fn finish(self) -> &'a mut ::Url { self.url }
[INFO] [stderr]     |                                        ^^^^^^^^ - here, drop of `self` needs exclusive access to `*self.url`, because the type `UrlQuery<'_>` implements the `Drop` trait
[INFO] [stderr]     |                                        |
[INFO] [stderr]     |                                        returning this value requires that `*self.url` is borrowed for `'a`
[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]    Compiling serde_json v1.0.18
[INFO] [stderr]    Compiling mysql_common v0.7.0
[INFO] [stderr]    Compiling mysql v13.1.0
[INFO] [stderr]    Compiling rust_db v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 13s
[INFO] running `"docker" "inspect" "3c29dbf6f3c48cbc20aefd53292d5db8fb496d5975ffe46854f9d735d9b51ad6"`
[INFO] running `"docker" "rm" "-f" "3c29dbf6f3c48cbc20aefd53292d5db8fb496d5975ffe46854f9d735d9b51ad6"`
[INFO] [stdout] 3c29dbf6f3c48cbc20aefd53292d5db8fb496d5975ffe46854f9d735d9b51ad6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ahcometrue/rust-db:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] cce9d6b1a73de862f52c99b219fa170731b87ad471e7f81e025437ae1c267cee
[INFO] running `"docker" "start" "-a" "cce9d6b1a73de862f52c99b219fa170731b87ad471e7f81e025437ae1c267cee"`
[INFO] [stderr]    Compiling rust_db v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.04s
[INFO] running `"docker" "inspect" "cce9d6b1a73de862f52c99b219fa170731b87ad471e7f81e025437ae1c267cee"`
[INFO] running `"docker" "rm" "-f" "cce9d6b1a73de862f52c99b219fa170731b87ad471e7f81e025437ae1c267cee"`
[INFO] [stdout] cce9d6b1a73de862f52c99b219fa170731b87ad471e7f81e025437ae1c267cee
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ahcometrue/rust-db:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 38bff59c60c01a19a7fbe5da9d1a1bee8c24a9b85f3f73ac5735342997d29ab9
[INFO] running `"docker" "start" "-a" "38bff59c60c01a19a7fbe5da9d1a1bee8c24a9b85f3f73ac5735342997d29ab9"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_db-dd09a0b83f7aff62
[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] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_db-510147897955c703
[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 rust_db
[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" "38bff59c60c01a19a7fbe5da9d1a1bee8c24a9b85f3f73ac5735342997d29ab9"`
[INFO] running `"docker" "rm" "-f" "38bff59c60c01a19a7fbe5da9d1a1bee8c24a9b85f3f73ac5735342997d29ab9"`
[INFO] [stdout] 38bff59c60c01a19a7fbe5da9d1a1bee8c24a9b85f3f73ac5735342997d29ab9