[INFO] crate thruster-core-async-await 0.7.8 is already in cache
[INFO] extracting crate thruster-core-async-await 0.7.8 into work/ex/beta-1.37-6/sources/1.36.0/reg/thruster-core-async-await/0.7.8
[INFO] extracting crate thruster-core-async-await 0.7.8 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/thruster-core-async-await/0.7.8
[INFO] validating manifest of thruster-core-async-await-0.7.8 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 thruster-core-async-await-0.7.8 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 thruster-core-async-await-0.7.8
[INFO] finished frobbing thruster-core-async-await-0.7.8
[INFO] frobbed toml for thruster-core-async-await-0.7.8 written to work/ex/beta-1.37-6/sources/1.36.0/reg/thruster-core-async-await/0.7.8/Cargo.toml
[INFO] started frobbing thruster-core-async-await-0.7.8
[INFO] finished frobbing thruster-core-async-await-0.7.8
[INFO] frobbed toml for thruster-core-async-await-0.7.8 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/thruster-core-async-await/0.7.8/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing thruster-core-async-await-0.7.8 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/thruster-core-async-await/0.7.8:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 3d4010d0857e6b85022c43cc855e1e0b9e9c95ea05311dd096f51a0695d60eba
[INFO] running `"docker" "start" "-a" "3d4010d0857e6b85022c43cc855e1e0b9e9c95ea05311dd096f51a0695d60eba"`
[INFO] [stderr]    Compiling futures-util-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling futures-executor-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling futures-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling thruster-core-async-await v0.7.8 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `crate::errors::ThrusterError`
[INFO] [stderr]  --> src/middleware.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::errors::ThrusterError;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/middleware.rs:9:45
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub type MiddlewareReturnValue<T> = Pin<Box<Future<Output=T> + Send + Sync>>;
[INFO] [stderr]   |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Output=T> + Send + Sync`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middleware.rs:11:34
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub type MiddlewareNext<C> = Box<Fn(C) -> Pin<Box<Future<Output=C> + Send + Sync>> + Send + Sync>;
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(C) -> Pin<Box<Future<Output=C> + Send + Sync>> + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middleware.rs:11:51
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub type MiddlewareNext<C> = Box<Fn(C) -> Pin<Box<Future<Output=C> + Send + Sync>> + Send + Sync>;
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Output=C> + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middleware.rs:13:35
[INFO] [stderr]    |
[INFO] [stderr] 13 | type MiddlewareFn<C> = fn(C, Box<((Fn(C) -> Pin<Box<Future<Output=C> + Send + Sync>>) + 'static + Send + Sync)>) -> Pin<Box<Future<Output=C> + Send + Sync>>;
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (Fn(C) -> Pin<Box<Future<Output=C> + Send + Sync>>) + 'static + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middleware.rs:13:53
[INFO] [stderr]    |
[INFO] [stderr] 13 | type MiddlewareFn<C> = fn(C, Box<((Fn(C) -> Pin<Box<Future<Output=C> + Send + Sync>>) + 'static + Send + Sync)>) -> Pin<Box<Future<Output=C> + Send + Sync>>;
[INFO] [stderr]    |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Output=C> + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middleware.rs:13:125
[INFO] [stderr]    |
[INFO] [stderr] 13 | type MiddlewareFn<C> = fn(C, Box<((Fn(C) -> Pin<Box<Future<Output=C> + Send + Sync>>) + 'static + Send + Sync)>) -> Pin<Box<Future<Output=C> + Send + Sync>>;
[INFO] [stderr]    |                                                                                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Output=C> + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middleware.rs:57:52
[INFO] [stderr]    |
[INFO] [stderr] 57 |   fn chained_run(&self, i: usize, j: usize) -> Box<Fn(C) -> Pin<Box<Future<Output=MiddlewareResult<C>> + Send + Sync>> + Send + Sync> {
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(C) -> Pin<Box<Future<Output=MiddlewareResult<C>> + Send + Sync>> + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middleware.rs:57:69
[INFO] [stderr]    |
[INFO] [stderr] 57 |   fn chained_run(&self, i: usize, j: usize) -> Box<Fn(C) -> Pin<Box<Future<Output=MiddlewareResult<C>> + Send + Sync>> + Send + Sync> {
[INFO] [stderr]    |                                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Output=MiddlewareResult<C>> + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middleware.rs:65:40
[INFO] [stderr]    |
[INFO] [stderr] 65 |   fn run(&self, context: C) -> Pin<Box<Future<Output=MiddlewareResult<C>> + Send + Sync>> {
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Output=MiddlewareResult<C>> + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware.rs:115:44
[INFO] [stderr]     |
[INFO] [stderr] 115 |   pub fn run(&self, context: T) -> Pin<Box<Future<Output=T> + Send + Sync>> {
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Output=T> + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.84s
[INFO] running `"docker" "inspect" "3d4010d0857e6b85022c43cc855e1e0b9e9c95ea05311dd096f51a0695d60eba"`
[INFO] running `"docker" "rm" "-f" "3d4010d0857e6b85022c43cc855e1e0b9e9c95ea05311dd096f51a0695d60eba"`
[INFO] [stdout] 3d4010d0857e6b85022c43cc855e1e0b9e9c95ea05311dd096f51a0695d60eba
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/thruster-core-async-await/0.7.8:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 044e0b5689ab23b47c4802d97b6b6a35139d2134ed504cf33fddf458ec82bb5b
[INFO] running `"docker" "start" "-a" "044e0b5689ab23b47c4802d97b6b6a35139d2134ed504cf33fddf458ec82bb5b"`
[INFO] [stderr]    Compiling thruster-core-async-await v0.7.8 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `crate::errors::ThrusterError`
[INFO] [stderr]  --> src/middleware.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::errors::ThrusterError;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/middleware.rs:9:45
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub type MiddlewareReturnValue<T> = Pin<Box<Future<Output=T> + Send + Sync>>;
[INFO] [stderr]   |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Output=T> + Send + Sync`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middleware.rs:11:34
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub type MiddlewareNext<C> = Box<Fn(C) -> Pin<Box<Future<Output=C> + Send + Sync>> + Send + Sync>;
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(C) -> Pin<Box<Future<Output=C> + Send + Sync>> + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middleware.rs:11:51
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub type MiddlewareNext<C> = Box<Fn(C) -> Pin<Box<Future<Output=C> + Send + Sync>> + Send + Sync>;
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Output=C> + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middleware.rs:13:35
[INFO] [stderr]    |
[INFO] [stderr] 13 | type MiddlewareFn<C> = fn(C, Box<((Fn(C) -> Pin<Box<Future<Output=C> + Send + Sync>>) + 'static + Send + Sync)>) -> Pin<Box<Future<Output=C> + Send + Sync>>;
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (Fn(C) -> Pin<Box<Future<Output=C> + Send + Sync>>) + 'static + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middleware.rs:13:53
[INFO] [stderr]    |
[INFO] [stderr] 13 | type MiddlewareFn<C> = fn(C, Box<((Fn(C) -> Pin<Box<Future<Output=C> + Send + Sync>>) + 'static + Send + Sync)>) -> Pin<Box<Future<Output=C> + Send + Sync>>;
[INFO] [stderr]    |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Output=C> + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middleware.rs:13:125
[INFO] [stderr]    |
[INFO] [stderr] 13 | type MiddlewareFn<C> = fn(C, Box<((Fn(C) -> Pin<Box<Future<Output=C> + Send + Sync>>) + 'static + Send + Sync)>) -> Pin<Box<Future<Output=C> + Send + Sync>>;
[INFO] [stderr]    |                                                                                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Output=C> + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middleware.rs:57:52
[INFO] [stderr]    |
[INFO] [stderr] 57 |   fn chained_run(&self, i: usize, j: usize) -> Box<Fn(C) -> Pin<Box<Future<Output=MiddlewareResult<C>> + Send + Sync>> + Send + Sync> {
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(C) -> Pin<Box<Future<Output=MiddlewareResult<C>> + Send + Sync>> + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middleware.rs:57:69
[INFO] [stderr]    |
[INFO] [stderr] 57 |   fn chained_run(&self, i: usize, j: usize) -> Box<Fn(C) -> Pin<Box<Future<Output=MiddlewareResult<C>> + Send + Sync>> + Send + Sync> {
[INFO] [stderr]    |                                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Output=MiddlewareResult<C>> + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/middleware.rs:65:40
[INFO] [stderr]    |
[INFO] [stderr] 65 |   fn run(&self, context: C) -> Pin<Box<Future<Output=MiddlewareResult<C>> + Send + Sync>> {
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Output=MiddlewareResult<C>> + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware.rs:115:44
[INFO] [stderr]     |
[INFO] [stderr] 115 |   pub fn run(&self, context: T) -> Pin<Box<Future<Output=T> + Send + Sync>> {
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Output=T> + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `"docker" "inspect" "044e0b5689ab23b47c4802d97b6b6a35139d2134ed504cf33fddf458ec82bb5b"`
[INFO] running `"docker" "rm" "-f" "044e0b5689ab23b47c4802d97b6b6a35139d2134ed504cf33fddf458ec82bb5b"`
[INFO] [stdout] 044e0b5689ab23b47c4802d97b6b6a35139d2134ed504cf33fddf458ec82bb5b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/thruster-core-async-await/0.7.8:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 142b3d46f07ca6f339e465e6c9169550c230154a6c467bb0db6fac7f0fd3f26e
[INFO] running `"docker" "start" "-a" "142b3d46f07ca6f339e465e6c9169550c230154a6c467bb0db6fac7f0fd3f26e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/thruster_core_async_await-5f36ac50c6e26fcf
[INFO] [stderr]    Doc-tests thruster-core-async-await
[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" "142b3d46f07ca6f339e465e6c9169550c230154a6c467bb0db6fac7f0fd3f26e"`
[INFO] running `"docker" "rm" "-f" "142b3d46f07ca6f339e465e6c9169550c230154a6c467bb0db6fac7f0fd3f26e"`
[INFO] [stdout] 142b3d46f07ca6f339e465e6c9169550c230154a6c467bb0db6fac7f0fd3f26e