[INFO] fetching crate hedera 0.4.1...
[INFO] checking hedera-0.4.1 against try#6f12b8fe67b4eed2e838dab803ed9493b9d62c0f for pr-79073
[INFO] extracting crate hedera 0.4.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate hedera 0.4.1 on toolchain 6f12b8fe67b4eed2e838dab803ed9493b9d62c0f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hedera 0.4.1
[INFO] finished tweaking crates.io crate hedera 0.4.1
[INFO] tweaked toml for crates.io crate hedera 0.4.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-uds v0.1.7
[INFO] [stderr]   Downloaded signature v1.2.2
[INFO] [stderr]   Downloaded protoc v2.8.2
[INFO] [stderr]   Downloaded protoc-rust-grpc v0.6.2
[INFO] [stderr]   Downloaded tokio-timer v0.1.2
[INFO] [stderr]   Downloaded tokio-tls-api v0.1.22
[INFO] [stderr]   Downloaded protoc-rust v2.8.2
[INFO] [stderr]   Downloaded httpbis v0.7.0
[INFO] [stderr]   Downloaded unix_socket v0.5.0
[INFO] [stderr]   Downloaded pretty_env_logger v0.3.1
[INFO] [stderr]   Downloaded tokio v0.1.19
[INFO] [stderr]   Downloaded tokio-async-await v0.1.7
[INFO] [stderr]   Downloaded protobuf-codegen v2.8.2
[INFO] [stderr]   Downloaded query_interface v0.3.5
[INFO] [stderr]   Downloaded protobuf v2.8.2
[INFO] [stderr]   Downloaded tls-api-stub v0.1.22
[INFO] [stderr]   Downloaded tokio-trace-core v0.1.0
[INFO] [stderr]   Downloaded grpc v0.6.2
[INFO] [stderr]   Downloaded ed25519 v1.0.3
[INFO] [stderr]   Downloaded curve25519-dalek v3.0.0
[INFO] [stderr]   Downloaded tls-api v0.1.22
[INFO] [stderr]   Downloaded ed25519-dalek v1.0.1
[INFO] [stderr]   Downloaded grpc-compiler v0.6.2
[INFO] [stderr]   Downloaded simple_asn1 v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ca8369e97ac008cc3b51830f84222219600d5b58d12ba7e98a71247c6764f541
[INFO] running `Command { std: "docker" "start" "-a" "ca8369e97ac008cc3b51830f84222219600d5b58d12ba7e98a71247c6764f541", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca8369e97ac008cc3b51830f84222219600d5b58d12ba7e98a71247c6764f541", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca8369e97ac008cc3b51830f84222219600d5b58d12ba7e98a71247c6764f541", kill_on_drop: false }`
[INFO] [stdout] ca8369e97ac008cc3b51830f84222219600d5b58d12ba7e98a71247c6764f541
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f0d3a2a386a8abfefda598c46f3cced63a3d49d28d9c14bd68b92bf915c4eef5
[INFO] running `Command { std: "docker" "start" "-a" "f0d3a2a386a8abfefda598c46f3cced63a3d49d28d9c14bd68b92bf915c4eef5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking futures v0.1.30
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling protobuf v2.8.2
[INFO] [stderr]    Compiling syn v1.0.50
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]    Compiling httpbis v0.7.0
[INFO] [stderr]     Checking object v0.22.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]     Checking cpuid-bool v0.1.2
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking signature v1.2.2
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[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking query_interface v0.3.5
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]     Checking tokio-trace-core v0.1.0
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking try_from v0.3.2
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking ed25519 v1.0.3
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking tls-api v0.1.22
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling protoc v2.8.2
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking tokio-timer v0.1.2
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking tls-api-stub v0.1.22
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking hashbrown v0.1.8
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking net2 v0.2.35
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking unix_socket v0.5.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking crossbeam-epoch v0.9.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking hmac v0.7.1
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking addr2line v0.14.0
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking sha2 v0.9.2
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]     Checking backtrace v0.3.55
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio-async-await v0.1.7
[INFO] [stderr]     Checking tokio-tls-api v0.1.22
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-async-await-0.1.7/src/lib.rs:2:44
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(rust_2018_preview, async_await, await_macro, futures_api)]
[INFO] [stdout]   |                                            ^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: subsumed by `.await` syntax
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::await`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-async-await-0.1.7/src/lib.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub use std::await as std_await;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ no `await` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.19
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tokio-async-await`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f0d3a2a386a8abfefda598c46f3cced63a3d49d28d9c14bd68b92bf915c4eef5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0d3a2a386a8abfefda598c46f3cced63a3d49d28d9c14bd68b92bf915c4eef5", kill_on_drop: false }`
[INFO] [stdout] f0d3a2a386a8abfefda598c46f3cced63a3d49d28d9c14bd68b92bf915c4eef5