[INFO] updating cached repository Croissong/patrician-crawler
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Croissong/patrician-crawler
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Croissong/patrician-crawler" "work/ex/beta-1.38-1/sources/1.37.0/gh/Croissong/patrician-crawler"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Croissong/patrician-crawler'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Croissong/patrician-crawler" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Croissong/patrician-crawler"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Croissong/patrician-crawler'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9a86a856f0df69f5c4c9e940257b758be799434c
[INFO] sha for GitHub repo Croissong/patrician-crawler: 9a86a856f0df69f5c4c9e940257b758be799434c
[INFO] validating manifest of Croissong/patrician-crawler 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 Croissong/patrician-crawler 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 Croissong/patrician-crawler
[INFO] finished frobbing Croissong/patrician-crawler
[INFO] frobbed toml for Croissong/patrician-crawler written to work/ex/beta-1.38-1/sources/1.37.0/gh/Croissong/patrician-crawler/Cargo.toml
[INFO] started frobbing Croissong/patrician-crawler
[INFO] finished frobbing Croissong/patrician-crawler
[INFO] frobbed toml for Croissong/patrician-crawler written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Croissong/patrician-crawler/Cargo.toml
[INFO] crate Croissong/patrician-crawler 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing Croissong/patrician-crawler against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Croissong/patrician-crawler:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 2bf7837aeaac672a6a44987ac66f7cbc021d9d0ad5e7d3a2b9aafc46aea577d7
[INFO] running `"docker" "start" "-a" "2bf7837aeaac672a6a44987ac66f7cbc021d9d0ad5e7d3a2b9aafc46aea577d7"`
[INFO] [stderr]    Compiling matches v0.1.4
[INFO] [stderr]    Compiling unicode-normalization v0.1.4
[INFO] [stderr]    Compiling serde v1.0.8
[INFO] [stderr]    Compiling quine-mc_cluskey v0.2.4
[INFO] [stderr]    Compiling httparse v1.2.2
[INFO] [stderr]    Compiling iovec v0.1.0
[INFO] [stderr]    Compiling time v0.1.37
[INFO] [stderr]    Compiling advapi32-sys v0.2.0
[INFO] [stderr]    Compiling user32-sys v0.1.2
[INFO] [stderr]    Compiling semver v0.6.0
[INFO] [stderr]    Compiling net2 v0.2.29
[INFO] [stderr]    Compiling unicode-bidi v0.3.2
[INFO] [stderr]    Compiling bytes v0.4.3
[INFO] [stderr]    Compiling mio v0.6.7
[INFO] [stderr]    Compiling serde_derive v1.0.8
[INFO] [stderr]    Compiling wio v0.1.2
[INFO] [stderr]    Compiling idna v0.1.2
[INFO] [stderr]    Compiling url v1.4.0
[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-1.4.0/src/form_urlencoded.rs:246:40
[INFO] [stderr]     |
[INFO] [stderr] 244 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 245 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 246 |     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 ws v0.7.1
[INFO] [stderr]    Compiling serde_json v1.0.2
[INFO] [stderr]    Compiling toml v0.4.1
[INFO] [stderr]    Compiling cargo_metadata v0.2.1
[INFO] [stderr]    Compiling clippy_lints v0.0.135 (https://github.com/Manishearth/rust-clippy#e72c70d0)
[INFO] [stderr] error[E0463]: can't find crate for `collections`
[INFO] [stderr]   --> /opt/crater/cargo-home/git/checkouts/rust-clippy-eb94f5e90699ab2d/e72c70d/clippy_lints/src/lib.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | extern crate collections;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: Could not compile `clippy_lints`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "2bf7837aeaac672a6a44987ac66f7cbc021d9d0ad5e7d3a2b9aafc46aea577d7"`
[INFO] running `"docker" "rm" "-f" "2bf7837aeaac672a6a44987ac66f7cbc021d9d0ad5e7d3a2b9aafc46aea577d7"`
[INFO] [stdout] 2bf7837aeaac672a6a44987ac66f7cbc021d9d0ad5e7d3a2b9aafc46aea577d7