[INFO] updating cached repository rainbowbismuth/git-descendants
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rainbowbismuth/git-descendants
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rainbowbismuth/git-descendants" "work/ex/beta-1.37-6/sources/1.36.0/gh/rainbowbismuth/git-descendants"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/rainbowbismuth/git-descendants'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rainbowbismuth/git-descendants" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rainbowbismuth/git-descendants"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rainbowbismuth/git-descendants'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] db62dc11026d8b6b2bd650389682815c92d23faa
[INFO] sha for GitHub repo rainbowbismuth/git-descendants: db62dc11026d8b6b2bd650389682815c92d23faa
[INFO] validating manifest of rainbowbismuth/git-descendants 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 rainbowbismuth/git-descendants 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 rainbowbismuth/git-descendants
[INFO] finished frobbing rainbowbismuth/git-descendants
[INFO] frobbed toml for rainbowbismuth/git-descendants written to work/ex/beta-1.37-6/sources/1.36.0/gh/rainbowbismuth/git-descendants/Cargo.toml
[INFO] started frobbing rainbowbismuth/git-descendants
[INFO] finished frobbing rainbowbismuth/git-descendants
[INFO] frobbed toml for rainbowbismuth/git-descendants written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rainbowbismuth/git-descendants/Cargo.toml
[INFO] crate rainbowbismuth/git-descendants already has a lockfile, it will not be regenerated
[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 rainbowbismuth/git-descendants against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rainbowbismuth/git-descendants:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] dee02e137d20b5d686787d60fd7918fba1044c219d98b7337f4e8a3fdd1001c9
[INFO] running `"docker" "start" "-a" "dee02e137d20b5d686787d60fd7918fba1044c219d98b7337f4e8a3fdd1001c9"`
[INFO] [stderr]    Compiling cc v1.0.4
[INFO] [stderr]    Compiling matches v0.1.6
[INFO] [stderr]    Compiling num-traits v0.2.0
[INFO] [stderr]    Compiling libc v0.2.36
[INFO] [stderr]    Compiling unicode-normalization v0.1.5
[INFO] [stderr]    Compiling rustc-demangle v0.1.6
[INFO] [stderr]    Compiling serde v1.0.27
[INFO] [stderr]    Compiling bitflags v1.0.1
[INFO] [stderr]    Compiling dtoa v0.4.2
[INFO] [stderr]    Compiling ansi_term v0.10.2
[INFO] [stderr]    Compiling itoa v0.3.4
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling colored v1.6.0
[INFO] [stderr]    Compiling atty v0.2.6
[INFO] [stderr]    Compiling time v0.1.39
[INFO] [stderr]    Compiling serde_derive_internals v0.19.0
[INFO] [stderr]    Compiling clap v2.30.0
[INFO] [stderr]    Compiling num-integer v0.1.36
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling num-iter v0.1.35
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling chrono v0.4.0
[INFO] [stderr]    Compiling idna v0.1.4
[INFO] [stderr]    Compiling serde_derive v1.0.27
[INFO] [stderr]    Compiling libz-sys v1.0.18
[INFO] [stderr]    Compiling openssl-sys v0.9.26
[INFO] [stderr]    Compiling cmake v0.1.29
[INFO] [stderr]    Compiling curl-sys v0.4.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling libssh2-sys v0.2.6
[INFO] [stderr]    Compiling libgit2-sys v0.6.19
[INFO] [stderr]    Compiling url v1.6.0
[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-1.6.0/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 v1.0.9
[INFO] [stderr]    Compiling backtrace v0.3.5
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling git2 v0.6.11
[INFO] [stderr]    Compiling git-descendents v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4m 11s
[INFO] running `"docker" "inspect" "dee02e137d20b5d686787d60fd7918fba1044c219d98b7337f4e8a3fdd1001c9"`
[INFO] running `"docker" "rm" "-f" "dee02e137d20b5d686787d60fd7918fba1044c219d98b7337f4e8a3fdd1001c9"`
[INFO] [stdout] dee02e137d20b5d686787d60fd7918fba1044c219d98b7337f4e8a3fdd1001c9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rainbowbismuth/git-descendants:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 14a3fd163e05f3b940e0f8ba8fd9a99ec639dd326ed66406c33bcfca0567ffe3
[INFO] running `"docker" "start" "-a" "14a3fd163e05f3b940e0f8ba8fd9a99ec639dd326ed66406c33bcfca0567ffe3"`
[INFO] [stderr]    Compiling git-descendents v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `"docker" "inspect" "14a3fd163e05f3b940e0f8ba8fd9a99ec639dd326ed66406c33bcfca0567ffe3"`
[INFO] running `"docker" "rm" "-f" "14a3fd163e05f3b940e0f8ba8fd9a99ec639dd326ed66406c33bcfca0567ffe3"`
[INFO] [stdout] 14a3fd163e05f3b940e0f8ba8fd9a99ec639dd326ed66406c33bcfca0567ffe3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rainbowbismuth/git-descendants:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 9e82933966cded570b2883abcf1e6d6d801888bf7ea176f967ad8cb12e87e556
[INFO] running `"docker" "start" "-a" "9e82933966cded570b2883abcf1e6d6d801888bf7ea176f967ad8cb12e87e556"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[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]      Running /opt/crater/target/debug/deps/git_descendents-93cbbe2ba5ad068d
[INFO] running `"docker" "inspect" "9e82933966cded570b2883abcf1e6d6d801888bf7ea176f967ad8cb12e87e556"`
[INFO] running `"docker" "rm" "-f" "9e82933966cded570b2883abcf1e6d6d801888bf7ea176f967ad8cb12e87e556"`
[INFO] [stdout] 9e82933966cded570b2883abcf1e6d6d801888bf7ea176f967ad8cb12e87e556