[INFO] updating cached repository Embisto/default-backend
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Embisto/default-backend
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Embisto/default-backend" "work/ex/beta-1.38-1/sources/1.37.0/gh/Embisto/default-backend"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Embisto/default-backend'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Embisto/default-backend" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Embisto/default-backend"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Embisto/default-backend'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 925ea6a526c453de587e16e12e0064ce347fbc3e
[INFO] sha for GitHub repo Embisto/default-backend: 925ea6a526c453de587e16e12e0064ce347fbc3e
[INFO] validating manifest of Embisto/default-backend 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 Embisto/default-backend 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 Embisto/default-backend
[INFO] finished frobbing Embisto/default-backend
[INFO] frobbed toml for Embisto/default-backend written to work/ex/beta-1.38-1/sources/1.37.0/gh/Embisto/default-backend/Cargo.toml
[INFO] started frobbing Embisto/default-backend
[INFO] finished frobbing Embisto/default-backend
[INFO] frobbed toml for Embisto/default-backend written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Embisto/default-backend/Cargo.toml
[INFO] crate Embisto/default-backend 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 Embisto/default-backend 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-5/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/Embisto/default-backend:/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] 3b0056d6e5e69db433feba8a43a67167d180675fecb2da990b74c02052b1dc05
[INFO] running `"docker" "start" "-a" "3b0056d6e5e69db433feba8a43a67167d180675fecb2da990b74c02052b1dc05"`
[INFO] [stderr]    Compiling cc v1.0.12
[INFO] [stderr]    Compiling pulldown-cmark v0.1.2
[INFO] [stderr]    Compiling same-file v0.1.3
[INFO] [stderr]    Compiling smallvec v0.6.1
[INFO] [stderr]    Compiling bytecount v0.2.0
[INFO] [stderr]    Compiling scoped-tls v0.1.1
[INFO] [stderr]    Compiling quick-error v1.2.1
[INFO] [stderr]    Compiling memoffset v0.1.0
[INFO] [stderr]    Compiling bitflags v1.0.2
[INFO] [stderr]    Compiling string v0.1.0
[INFO] [stderr]    Compiling indexmap v1.0.1
[INFO] [stderr]    Compiling termcolor v0.3.6
[INFO] [stderr]    Compiling quick-error v0.2.2
[INFO] [stderr]    Compiling protobuf v1.5.1
[INFO] [stderr]    Compiling http-range v0.1.1
[INFO] [stderr]    Compiling spin v0.4.8
[INFO] [stderr]    Compiling hostname v0.1.4
[INFO] [stderr]    Compiling atty v0.2.9
[INFO] [stderr]    Compiling proc-macro2 v0.3.7
[INFO] [stderr]    Compiling crossbeam-utils v0.3.2
[INFO] [stderr]    Compiling actix_derive v0.2.0
[INFO] [stderr]    Compiling actix-web v0.5.6
[INFO] [stderr]    Compiling serde_json v1.0.16
[INFO] [stderr]    Compiling semver v0.8.0
[INFO] [stderr]    Compiling base64 v0.6.0
[INFO] [stderr]    Compiling regex-syntax v0.5.5
[INFO] [stderr]    Compiling humantime v1.1.1
[INFO] [stderr]    Compiling walkdir v1.0.7
[INFO] [stderr]    Compiling bytes v0.4.6
[INFO] [stderr]    Compiling uuid v0.6.3
[INFO] [stderr]    Compiling parking_lot_core v0.2.13
[INFO] [stderr]    Compiling resolv-conf v0.6.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.2.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.4.1
[INFO] [stderr]    Compiling tokio-timer v0.2.1
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling tokio-io v0.1.6
[INFO] [stderr]    Compiling http v0.1.5
[INFO] [stderr]    Compiling mio-uds v0.6.4
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]    Compiling parking_lot v0.4.8
[INFO] [stderr]    Compiling crossbeam-deque v0.3.0
[INFO] [stderr]    Compiling url v1.7.0
[INFO] [stderr]    Compiling syn v0.13.1
[INFO] [stderr]    Compiling rayon-core 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-1.7.0/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 regex v0.2.10
[INFO] [stderr]    Compiling tokio-reactor v0.1.1
[INFO] [stderr]    Compiling mime v0.3.5
[INFO] [stderr]    Compiling tokio-threadpool v0.1.2
[INFO] [stderr]    Compiling crossbeam-channel v0.1.2
[INFO] [stderr]    Compiling rayon v0.8.2
[INFO] [stderr]    Compiling serde_urlencoded v0.5.1
[INFO] [stderr]    Compiling prometheus v0.4.0
[INFO] [stderr]    Compiling h2 v0.1.6
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling tokio-tcp v0.1.0
[INFO] [stderr]    Compiling tokio-udp v0.1.0
[INFO] [stderr]    Compiling serde_derive_internals v0.23.1
[INFO] [stderr]    Compiling env_logger v0.5.9
[INFO] [stderr]    Compiling ring v0.12.1
[INFO] [stderr]    Compiling tokio v0.1.5
[INFO] [stderr]    Compiling flate2 v1.0.1
[INFO] [stderr]    Compiling brotli2 v0.3.2
[INFO] [stderr]    Compiling tokio-core v0.1.17
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.4
[INFO] [stderr]    Compiling backtrace v0.3.6
[INFO] [stderr]    Compiling backtrace v0.2.3
[INFO] [stderr]    Compiling serde_derive v1.0.43
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling tokio-signal v0.1.5
[INFO] [stderr]    Compiling error-chain v0.1.12
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling trust-dns-proto v0.3.3
[INFO] [stderr]    Compiling cookie v0.10.1
[INFO] [stderr]    Compiling trust-dns-resolver v0.8.2
[INFO] [stderr]    Compiling cargo_metadata v0.3.3
[INFO] [stderr]    Compiling skeptic v0.13.2
[INFO] [stderr]    Compiling actix v0.5.6
[INFO] [stderr]    Compiling default-backend v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | / lazy_static! {
[INFO] [stderr] 25 | |
[INFO] [stderr] 26 | |     static ref REQUEST_COUNT: CounterVec = register_counter_vec!(
[INFO] [stderr] 27 | |         opts!(
[INFO] [stderr] ...  |
[INFO] [stderr] 45 | |     ).unwrap();
[INFO] [stderr] 46 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | / lazy_static! {
[INFO] [stderr] 25 | |
[INFO] [stderr] 26 | |     static ref REQUEST_COUNT: CounterVec = register_counter_vec!(
[INFO] [stderr] 27 | |         opts!(
[INFO] [stderr] ...  |
[INFO] [stderr] 45 | |     ).unwrap();
[INFO] [stderr] 46 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 34s
[INFO] running `"docker" "inspect" "3b0056d6e5e69db433feba8a43a67167d180675fecb2da990b74c02052b1dc05"`
[INFO] running `"docker" "rm" "-f" "3b0056d6e5e69db433feba8a43a67167d180675fecb2da990b74c02052b1dc05"`
[INFO] [stdout] 3b0056d6e5e69db433feba8a43a67167d180675fecb2da990b74c02052b1dc05
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/Embisto/default-backend:/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] e91e8dd2fd59d4a586665ea45eb434220037a8406ade4c8d5f8601cd96806623
[INFO] running `"docker" "start" "-a" "e91e8dd2fd59d4a586665ea45eb434220037a8406ade4c8d5f8601cd96806623"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling default-backend v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | / lazy_static! {
[INFO] [stderr] 25 | |
[INFO] [stderr] 26 | |     static ref REQUEST_COUNT: CounterVec = register_counter_vec!(
[INFO] [stderr] 27 | |         opts!(
[INFO] [stderr] ...  |
[INFO] [stderr] 45 | |     ).unwrap();
[INFO] [stderr] 46 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | / lazy_static! {
[INFO] [stderr] 25 | |
[INFO] [stderr] 26 | |     static ref REQUEST_COUNT: CounterVec = register_counter_vec!(
[INFO] [stderr] 27 | |         opts!(
[INFO] [stderr] ...  |
[INFO] [stderr] 45 | |     ).unwrap();
[INFO] [stderr] 46 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.38s
[INFO] running `"docker" "inspect" "e91e8dd2fd59d4a586665ea45eb434220037a8406ade4c8d5f8601cd96806623"`
[INFO] running `"docker" "rm" "-f" "e91e8dd2fd59d4a586665ea45eb434220037a8406ade4c8d5f8601cd96806623"`
[INFO] [stdout] e91e8dd2fd59d4a586665ea45eb434220037a8406ade4c8d5f8601cd96806623
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/Embisto/default-backend:/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] 75c0f7302ac0cd8a17890f4364240e67c54737b2afe7e2ff8db16a968c3c1a27
[INFO] running `"docker" "start" "-a" "75c0f7302ac0cd8a17890f4364240e67c54737b2afe7e2ff8db16a968c3c1a27"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/default_backend-e87bd16b00200c6d
[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" "75c0f7302ac0cd8a17890f4364240e67c54737b2afe7e2ff8db16a968c3c1a27"`
[INFO] running `"docker" "rm" "-f" "75c0f7302ac0cd8a17890f4364240e67c54737b2afe7e2ff8db16a968c3c1a27"`
[INFO] [stdout] 75c0f7302ac0cd8a17890f4364240e67c54737b2afe7e2ff8db16a968c3c1a27