[INFO] updating cached repository pigeon-working-group/9000d
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/pigeon-working-group/9000d
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/pigeon-working-group/9000d" "work/ex/pr-60944/sources/master#589beb979c0f1a9736e02e578913db88398c3ba5/gh/pigeon-working-group/9000d"`
[INFO] [stderr] Cloning into 'work/ex/pr-60944/sources/master#589beb979c0f1a9736e02e578913db88398c3ba5/gh/pigeon-working-group/9000d'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/pigeon-working-group/9000d" "work/ex/pr-60944/sources/try#42445ded8fd34235a676755cb5d079658ed51f6a/gh/pigeon-working-group/9000d"`
[INFO] [stderr] Cloning into 'work/ex/pr-60944/sources/try#42445ded8fd34235a676755cb5d079658ed51f6a/gh/pigeon-working-group/9000d'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2ee57ca8bb63ff38c6a7c7e6141554d81fe6e568
[INFO] sha for GitHub repo pigeon-working-group/9000d: 2ee57ca8bb63ff38c6a7c7e6141554d81fe6e568
[INFO] validating manifest of pigeon-working-group/9000d on toolchain master#589beb979c0f1a9736e02e578913db88398c3ba5
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+589beb979c0f1a9736e02e578913db88398c3ba5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of pigeon-working-group/9000d on toolchain try#42445ded8fd34235a676755cb5d079658ed51f6a
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+42445ded8fd34235a676755cb5d079658ed51f6a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing pigeon-working-group/9000d
[INFO] finished frobbing pigeon-working-group/9000d
[INFO] frobbed toml for pigeon-working-group/9000d written to work/ex/pr-60944/sources/master#589beb979c0f1a9736e02e578913db88398c3ba5/gh/pigeon-working-group/9000d/Cargo.toml
[INFO] started frobbing pigeon-working-group/9000d
[INFO] finished frobbing pigeon-working-group/9000d
[INFO] frobbed toml for pigeon-working-group/9000d written to work/ex/pr-60944/sources/try#42445ded8fd34235a676755cb5d079658ed51f6a/gh/pigeon-working-group/9000d/Cargo.toml
[INFO] crate pigeon-working-group/9000d already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+589beb979c0f1a9736e02e578913db88398c3ba5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+42445ded8fd34235a676755cb5d079658ed51f6a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking pigeon-working-group/9000d against master#589beb979c0f1a9736e02e578913db88398c3ba5 for pr-60944
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60944/worker-2/master#589beb979c0f1a9736e02e578913db88398c3ba5:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60944/sources/master#589beb979c0f1a9736e02e578913db88398c3ba5/gh/pigeon-working-group/9000d:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+589beb979c0f1a9736e02e578913db88398c3ba5-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 476d389bce9a15246bec2892b78b8dce046611fe8ebe83deb50de6b70a5f9590
[INFO] running `"docker" "start" "-a" "476d389bce9a15246bec2892b78b8dce046611fe8ebe83deb50de6b70a5f9590"`
[INFO] [stderr]    Compiling matches v0.1.6
[INFO] [stderr]    Compiling unicode-normalization v0.1.5
[INFO] [stderr]    Compiling lazy_static v0.2.8
[INFO] [stderr]    Compiling serde v1.0.11
[INFO] [stderr]    Compiling percent-encoding v1.0.0
[INFO] [stderr]    Compiling if_chain v0.1.2
[INFO] [stderr]     Checking quick-error v1.2.0
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.11
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]     Checking rppal v0.1.3
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]     Checking aho-corasick v0.6.3
[INFO] [stderr]     Checking regex v0.2.2
[INFO] [stderr]    Compiling idna v0.1.4
[INFO] [stderr]    Compiling url v1.5.1
[INFO] [stderr]     Checking validator v0.6.0
[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-1.5.1/src/form_urlencoded.rs:251:40
[INFO] [stderr]     |
[INFO] [stderr] 249 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 250 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 251 |     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] 
[INFO] [stderr]    Compiling serde_json v1.0.2
[INFO] [stderr]    Compiling validator_derive v0.6.0
[INFO] [stderr]     Checking 9000d v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.33s
[INFO] running `"docker" "inspect" "476d389bce9a15246bec2892b78b8dce046611fe8ebe83deb50de6b70a5f9590"`
[INFO] running `"docker" "rm" "-f" "476d389bce9a15246bec2892b78b8dce046611fe8ebe83deb50de6b70a5f9590"`
[INFO] [stdout] 476d389bce9a15246bec2892b78b8dce046611fe8ebe83deb50de6b70a5f9590