[INFO] updating cached repository Scetch/rlstats-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Scetch/rlstats-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Scetch/rlstats-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/Scetch/rlstats-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Scetch/rlstats-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Scetch/rlstats-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Scetch/rlstats-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Scetch/rlstats-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e35bbd84acd6f3bb900ecd8d5d7f51fbca18eead
[INFO] sha for GitHub repo Scetch/rlstats-rs: e35bbd84acd6f3bb900ecd8d5d7f51fbca18eead
[INFO] validating manifest of Scetch/rlstats-rs 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 Scetch/rlstats-rs 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 Scetch/rlstats-rs
[INFO] finished frobbing Scetch/rlstats-rs
[INFO] frobbed toml for Scetch/rlstats-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/Scetch/rlstats-rs/Cargo.toml
[INFO] started frobbing Scetch/rlstats-rs
[INFO] finished frobbing Scetch/rlstats-rs
[INFO] frobbed toml for Scetch/rlstats-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Scetch/rlstats-rs/Cargo.toml
[INFO] crate Scetch/rlstats-rs 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Scetch/rlstats-rs 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Scetch/rlstats-rs:/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] 047e7a58a3b2641160019c61202dd72f4a9fa1d1c4fafc2dcd4cdd6cb3189e9b
[INFO] running `"docker" "start" "-a" "047e7a58a3b2641160019c61202dd72f4a9fa1d1c4fafc2dcd4cdd6cb3189e9b"`
[INFO] [stderr]    Compiling unicode-normalization v0.1.6
[INFO] [stderr]    Compiling net2 v0.2.32
[INFO] [stderr]    Compiling openssl-sys v0.9.30
[INFO] [stderr]    Compiling tokio-io v0.1.6
[INFO] [stderr]    Compiling tokio-threadpool v0.1.3
[INFO] [stderr]    Compiling phf_generator v0.7.22
[INFO] [stderr]    Compiling phf_codegen v0.7.22
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.4
[INFO] [stderr]    Compiling mio v0.6.14
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]    Compiling tokio-fs v0.1.0
[INFO] [stderr]    Compiling tokio-reactor v0.1.1
[INFO] [stderr]    Compiling tokio-tcp v0.1.0
[INFO] [stderr]    Compiling tokio-udp v0.1.0
[INFO] [stderr]    Compiling tokio v0.1.6
[INFO] [stderr]    Compiling tokio-core v0.1.17
[INFO] [stderr]    Compiling native-tls v0.1.5
[INFO] [stderr]    Compiling idna v0.1.4
[INFO] [stderr]    Compiling tokio-proto v0.1.1
[INFO] [stderr]    Compiling tokio-tls v0.1.4
[INFO] [stderr]    Compiling url v1.7.0
[INFO] [stderr]    Compiling hyper v0.11.26
[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_urlencoded v0.5.1
[INFO] [stderr]    Compiling hyper-tls v0.1.3
[INFO] [stderr]    Compiling reqwest v0.8.5
[INFO] [stderr]    Compiling rlstats-rs v0.1.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 13s
[INFO] running `"docker" "inspect" "047e7a58a3b2641160019c61202dd72f4a9fa1d1c4fafc2dcd4cdd6cb3189e9b"`
[INFO] running `"docker" "rm" "-f" "047e7a58a3b2641160019c61202dd72f4a9fa1d1c4fafc2dcd4cdd6cb3189e9b"`
[INFO] [stdout] 047e7a58a3b2641160019c61202dd72f4a9fa1d1c4fafc2dcd4cdd6cb3189e9b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Scetch/rlstats-rs:/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" "test" "--frozen" "--no-run"`
[INFO] [stdout] e628f7f635dcead906511978665278b6d2cce06d9a9b4c9ef3ffa026304d9e5f
[INFO] running `"docker" "start" "-a" "e628f7f635dcead906511978665278b6d2cce06d9a9b4c9ef3ffa026304d9e5f"`
[INFO] [stderr]    Compiling rlstats-rs v0.1.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.06s
[INFO] running `"docker" "inspect" "e628f7f635dcead906511978665278b6d2cce06d9a9b4c9ef3ffa026304d9e5f"`
[INFO] running `"docker" "rm" "-f" "e628f7f635dcead906511978665278b6d2cce06d9a9b4c9ef3ffa026304d9e5f"`
[INFO] [stdout] e628f7f635dcead906511978665278b6d2cce06d9a9b4c9ef3ffa026304d9e5f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Scetch/rlstats-rs:/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" "test" "--frozen"`
[INFO] [stdout] c12a587ae11e5d2a7f7dff71a5d17c5755dbf7c20d60d2b22f76480face3c4b7
[INFO] running `"docker" "start" "-a" "c12a587ae11e5d2a7f7dff71a5d17c5755dbf7c20d60d2b22f76480face3c4b7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rlstats-4ac743e2a56a9cd7
[INFO] [stderr]    Doc-tests rlstats
[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] [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" "c12a587ae11e5d2a7f7dff71a5d17c5755dbf7c20d60d2b22f76480face3c4b7"`
[INFO] running `"docker" "rm" "-f" "c12a587ae11e5d2a7f7dff71a5d17c5755dbf7c20d60d2b22f76480face3c4b7"`
[INFO] [stdout] c12a587ae11e5d2a7f7dff71a5d17c5755dbf7c20d60d2b22f76480face3c4b7