[INFO] updating cached repository ustulation/mio-poc
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ustulation/mio-poc
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ustulation/mio-poc" "work/ex/beta-1.38-1/sources/1.37.0/gh/ustulation/mio-poc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ustulation/mio-poc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ustulation/mio-poc" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ustulation/mio-poc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ustulation/mio-poc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 350f283ab37f511b5f53783860e02007ae1b78b6
[INFO] sha for GitHub repo ustulation/mio-poc: 350f283ab37f511b5f53783860e02007ae1b78b6
[INFO] validating manifest of ustulation/mio-poc 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 ustulation/mio-poc 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 ustulation/mio-poc
[INFO] finished frobbing ustulation/mio-poc
[INFO] frobbed toml for ustulation/mio-poc written to work/ex/beta-1.38-1/sources/1.37.0/gh/ustulation/mio-poc/Cargo.toml
[INFO] started frobbing ustulation/mio-poc
[INFO] finished frobbing ustulation/mio-poc
[INFO] frobbed toml for ustulation/mio-poc written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ustulation/mio-poc/Cargo.toml
[INFO] crate ustulation/mio-poc 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 ustulation/mio-poc 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/ustulation/mio-poc:/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] 7fbb121ae98051ac0feb4fae678b4aad4cec211ad677067256775c4cfca9031d
[INFO] running `"docker" "start" "-a" "7fbb121ae98051ac0feb4fae678b4aad4cec211ad677067256775c4cfca9031d"`
[INFO] [stderr]    Compiling unicode-normalization v0.1.3
[INFO] [stderr]    Compiling serde v0.7.15
[INFO] [stderr]    Compiling bytes v0.3.0
[INFO] [stderr]    Compiling quick-error v1.1.0
[INFO] [stderr]    Compiling slab v0.1.3
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]    Compiling unicode-bidi v0.2.4
[INFO] [stderr]    Compiling net2 v0.2.26
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling time v0.1.36
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling bincode v0.6.1
[INFO] [stderr]    Compiling humantime v0.1.3
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling mio v0.6.4
[INFO] [stderr]    Compiling idna v0.1.0
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling fs2 v0.2.5
[INFO] [stderr]    Compiling ordered-float v0.1.0
[INFO] [stderr]    Compiling chrono v0.2.25
[INFO] [stderr]    Compiling miow v0.1.5
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling config_file_handler v0.4.0
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling url v1.4.0
[INFO] [stderr]    Compiling mio v0.5.1
[INFO] [stderr]    Compiling serde-value v0.2.1
[INFO] [stderr]    Compiling toml v0.1.30
[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 v0.5.3
[INFO] [stderr]    Compiling log4rs v0.4.8
[INFO] [stderr]    Compiling maidsafe_utilities v0.10.0
[INFO] [stderr]    Compiling mio-poc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:30:27
[INFO] [stderr]    |
[INFO] [stderr] 30 | struct CoreMsg(Option<Box<FnMut(&Poll) + 'static + Send>>);
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&Poll) + 'static + Send`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.40s
[INFO] running `"docker" "inspect" "7fbb121ae98051ac0feb4fae678b4aad4cec211ad677067256775c4cfca9031d"`
[INFO] running `"docker" "rm" "-f" "7fbb121ae98051ac0feb4fae678b4aad4cec211ad677067256775c4cfca9031d"`
[INFO] [stdout] 7fbb121ae98051ac0feb4fae678b4aad4cec211ad677067256775c4cfca9031d
[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/ustulation/mio-poc:/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] 7686948b37377abc610970d99f38a8eb33b77816dfe510ce7f728eeaee47fa2c
[INFO] running `"docker" "start" "-a" "7686948b37377abc610970d99f38a8eb33b77816dfe510ce7f728eeaee47fa2c"`
[INFO] [stderr]    Compiling mio-poc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:30:27
[INFO] [stderr]    |
[INFO] [stderr] 30 | struct CoreMsg(Option<Box<FnMut(&Poll) + 'static + Send>>);
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&Poll) + 'static + Send`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.08s
[INFO] running `"docker" "inspect" "7686948b37377abc610970d99f38a8eb33b77816dfe510ce7f728eeaee47fa2c"`
[INFO] running `"docker" "rm" "-f" "7686948b37377abc610970d99f38a8eb33b77816dfe510ce7f728eeaee47fa2c"`
[INFO] [stdout] 7686948b37377abc610970d99f38a8eb33b77816dfe510ce7f728eeaee47fa2c
[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/ustulation/mio-poc:/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] 7cb6a9f1df2537e08a50ee0ff422c59e0b397375f4c90aae1245e2ee1b21fb63
[INFO] running `"docker" "start" "-a" "7cb6a9f1df2537e08a50ee0ff422c59e0b397375f4c90aae1245e2ee1b21fb63"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mio_poc-17b1831297bcac40
[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" "7cb6a9f1df2537e08a50ee0ff422c59e0b397375f4c90aae1245e2ee1b21fb63"`
[INFO] running `"docker" "rm" "-f" "7cb6a9f1df2537e08a50ee0ff422c59e0b397375f4c90aae1245e2ee1b21fb63"`
[INFO] [stdout] 7cb6a9f1df2537e08a50ee0ff422c59e0b397375f4c90aae1245e2ee1b21fb63