[INFO] updating cached repository keringar/mute-cs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/keringar/mute-cs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/keringar/mute-cs" "work/ex/beta-1.37-6/sources/1.36.0/gh/keringar/mute-cs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/keringar/mute-cs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/keringar/mute-cs" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/keringar/mute-cs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/keringar/mute-cs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7bd2c4afc79d3e41ca3f799bc476024c73080448
[INFO] sha for GitHub repo keringar/mute-cs: 7bd2c4afc79d3e41ca3f799bc476024c73080448
[INFO] validating manifest of keringar/mute-cs 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 keringar/mute-cs 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 keringar/mute-cs
[INFO] finished frobbing keringar/mute-cs
[INFO] frobbed toml for keringar/mute-cs written to work/ex/beta-1.37-6/sources/1.36.0/gh/keringar/mute-cs/Cargo.toml
[INFO] started frobbing keringar/mute-cs
[INFO] finished frobbing keringar/mute-cs
[INFO] frobbed toml for keringar/mute-cs written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/keringar/mute-cs/Cargo.toml
[INFO] crate keringar/mute-cs 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] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing keringar/mute-cs against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/keringar/mute-cs:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] e9c74e9e57a3bd948bf453875a8a2e213e5cf26493f272d8e3b8c3b56a0a99d2
[INFO] running `"docker" "start" "-a" "e9c74e9e57a3bd948bf453875a8a2e213e5cf26493f272d8e3b8c3b56a0a99d2"`
[INFO] [stderr]    Compiling serde v1.0.37
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]    Compiling crossbeam-utils v0.3.2
[INFO] [stderr]    Compiling base64 v0.9.0
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling parking_lot_core v0.2.13
[INFO] [stderr]    Compiling uuid v0.6.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.2.0
[INFO] [stderr]    Compiling mio v0.6.14
[INFO] [stderr]    Compiling tokio-timer v0.2.1
[INFO] [stderr]    Compiling syn v0.13.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling tokio-io v0.1.6
[INFO] [stderr]    Compiling http v0.1.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.4.1
[INFO] [stderr]    Compiling url v1.7.0
[INFO] [stderr]    Compiling backtrace v0.3.5
[INFO] [stderr]    Compiling parking_lot v0.4.8
[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] 
[INFO] [stderr]    Compiling backtrace v0.2.3
[INFO] [stderr]    Compiling env_logger v0.5.6
[INFO] [stderr]    Compiling crossbeam-deque v0.3.0
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]    Compiling rayon v0.8.2
[INFO] [stderr]    Compiling crossbeam-channel v0.1.2
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling tokio-reactor v0.1.1
[INFO] [stderr]    Compiling mio-uds v0.6.4
[INFO] [stderr]    Compiling flate2 v1.0.1
[INFO] [stderr]    Compiling error-chain v0.1.12
[INFO] [stderr]    Compiling tokio-threadpool v0.1.2
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]    Compiling tokio-tcp v0.1.0
[INFO] [stderr]    Compiling tokio-udp v0.1.0
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.4
[INFO] [stderr]    Compiling ring v0.12.1
[INFO] [stderr]    Compiling brotli2 v0.3.2
[INFO] [stderr]    Compiling serde_derive_internals v0.23.0
[INFO] [stderr]    Compiling tokio v0.1.5
[INFO] [stderr]    Compiling h2 v0.1.5
[INFO] [stderr]    Compiling semver v0.8.0
[INFO] [stderr]    Compiling serde_json v1.0.13
[INFO] [stderr]    Compiling tokio-core v0.1.16
[INFO] [stderr]    Compiling serde_derive v1.0.37
[INFO] [stderr]    Compiling trust-dns-proto v0.3.2
[INFO] [stderr]    Compiling tokio-signal v0.1.5
[INFO] [stderr]    Compiling cookie v0.10.1
[INFO] [stderr]    Compiling trust-dns-resolver v0.8.1
[INFO] [stderr]    Compiling cargo_metadata v0.3.3
[INFO] [stderr]    Compiling skeptic v0.13.2
[INFO] [stderr]    Compiling actix v0.5.5
[INFO] [stderr]    Compiling actix-web v0.4.10
[INFO] [stderr]    Compiling mute-cs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 32s
[INFO] running `"docker" "inspect" "e9c74e9e57a3bd948bf453875a8a2e213e5cf26493f272d8e3b8c3b56a0a99d2"`
[INFO] running `"docker" "rm" "-f" "e9c74e9e57a3bd948bf453875a8a2e213e5cf26493f272d8e3b8c3b56a0a99d2"`
[INFO] [stdout] e9c74e9e57a3bd948bf453875a8a2e213e5cf26493f272d8e3b8c3b56a0a99d2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/keringar/mute-cs:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 1bf869fbf8913c46cf1465fdf20612f162d23a1ba26a047bfbf1be8c81ef133e
[INFO] running `"docker" "start" "-a" "1bf869fbf8913c46cf1465fdf20612f162d23a1ba26a047bfbf1be8c81ef133e"`
[INFO] [stderr]    Compiling mute-cs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.72s
[INFO] running `"docker" "inspect" "1bf869fbf8913c46cf1465fdf20612f162d23a1ba26a047bfbf1be8c81ef133e"`
[INFO] running `"docker" "rm" "-f" "1bf869fbf8913c46cf1465fdf20612f162d23a1ba26a047bfbf1be8c81ef133e"`
[INFO] [stdout] 1bf869fbf8913c46cf1465fdf20612f162d23a1ba26a047bfbf1be8c81ef133e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/keringar/mute-cs:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] d73b1b00c9bd5f88f3dbd756502f1b83437892b83e2ec3d27869976dca438425
[INFO] running `"docker" "start" "-a" "d73b1b00c9bd5f88f3dbd756502f1b83437892b83e2ec3d27869976dca438425"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.24s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mute_cs-d3ee82fd620aef59
[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" "d73b1b00c9bd5f88f3dbd756502f1b83437892b83e2ec3d27869976dca438425"`
[INFO] running `"docker" "rm" "-f" "d73b1b00c9bd5f88f3dbd756502f1b83437892b83e2ec3d27869976dca438425"`
[INFO] [stdout] d73b1b00c9bd5f88f3dbd756502f1b83437892b83e2ec3d27869976dca438425