[INFO] cloning repository https://github.com/leaxoy/remq
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/leaxoy/remq" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleaxoy%2Fremq", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleaxoy%2Fremq'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b166f4d1eb29bbb7396a45d310d411b50f436baf
[INFO] testing leaxoy/remq against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleaxoy%2Fremq" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/leaxoy/remq on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/leaxoy/remq
[INFO] finished tweaking git repo https://github.com/leaxoy/remq
[INFO] tweaked toml for git repo https://github.com/leaxoy/remq written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/leaxoy/remq already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--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 log v0.4.5
[INFO] [stderr]   Downloaded crossbeam-epoch v0.5.2
[INFO] [stderr]   Downloaded itoa v0.4.3
[INFO] [stderr]   Downloaded serde v1.0.80
[INFO] [stderr]   Downloaded tokio-fs v0.1.3
[INFO] [stderr]   Downloaded tokio-current-thread v0.1.3
[INFO] [stderr]   Downloaded mio v0.6.16
[INFO] [stderr]   Downloaded num_cpus v1.8.0
[INFO] [stderr]   Downloaded proc-macro2 v0.4.20
[INFO] [stderr]   Downloaded quote v0.6.8
[INFO] [stderr]   Downloaded syn v0.15.11
[INFO] [stderr]   Downloaded serde_json v1.0.32
[INFO] [stderr]   Downloaded serde_derive v1.0.80
[INFO] [stderr]   Downloaded ryu v0.2.6
[INFO] [stderr]   Downloaded rand v0.5.5
[INFO] [stderr]   Downloaded winapi v0.3.6
[INFO] [stderr]   Downloaded bitflags v1.0.4
[INFO] [stderr]   Downloaded tokio-tcp v0.1.2
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.7
[INFO] [stderr]   Downloaded crossbeam-deque v0.6.1
[INFO] [stderr]   Downloaded tokio-io v0.1.9
[INFO] [stderr]   Downloaded tokio-timer v0.2.7
[INFO] [stderr]   Downloaded byteorder v1.2.6
[INFO] [stderr]   Downloaded memoffset v0.2.1
[INFO] [stderr]   Downloaded lazycell v1.2.0
[INFO] [stderr]   Downloaded owning_ref v0.3.3
[INFO] [stderr]   Downloaded lazy_static v1.1.0
[INFO] [stderr]   Downloaded lock_api v0.1.4
[INFO] [stderr]   Downloaded tokio-executor v0.1.5
[INFO] [stderr]   Downloaded slab v0.4.1
[INFO] [stderr]   Downloaded futures v0.1.25
[INFO] [stderr]   Downloaded rand_core v0.3.0
[INFO] [stderr]   Downloaded smallvec v0.6.5
[INFO] [stderr]   Downloaded parking_lot_core v0.3.1
[INFO] [stderr]   Downloaded rand_core v0.2.2
[INFO] [stderr]   Downloaded tokio-reactor v0.1.6
[INFO] [stderr]   Downloaded tokio v0.1.11
[INFO] [stderr]   Downloaded bytes v0.4.10
[INFO] [stderr]   Downloaded nodrop v0.1.12
[INFO] [stderr]   Downloaded arrayvec v0.4.7
[INFO] [stderr]   Downloaded tokio-udp v0.1.2
[INFO] [stderr]   Downloaded crossbeam-utils v0.5.0
[INFO] [stderr]   Downloaded parking_lot v0.6.4
[INFO] [stderr]   Downloaded cfg-if v0.1.5
[INFO] [stderr]   Downloaded tokio-uds v0.2.2
[INFO] [stderr]   Downloaded tokio-async-await v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e75f31139e45c9325a831ef2dd47ff5c0721043942444b0bd6c3aa4d515216c4
[INFO] running `Command { std: "docker" "start" "-a" "e75f31139e45c9325a831ef2dd47ff5c0721043942444b0bd6c3aa4d515216c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e75f31139e45c9325a831ef2dd47ff5c0721043942444b0bd6c3aa4d515216c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e75f31139e45c9325a831ef2dd47ff5c0721043942444b0bd6c3aa4d515216c4", kill_on_drop: false }`
[INFO] [stdout] e75f31139e45c9325a831ef2dd47ff5c0721043942444b0bd6c3aa4d515216c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51058ee53da84d6b11099ed1d897f13be24a62ec5e2cf1fe7192bc3eb7f6bbff
[INFO] running `Command { std: "docker" "start" "-a" "51058ee53da84d6b11099ed1d897f13be24a62ec5e2cf1fe7192bc3eb7f6bbff", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures v0.1.25
[INFO] [stderr]    Compiling rand_core v0.3.0
[INFO] [stderr]    Compiling byteorder v1.2.6
[INFO] [stderr]    Compiling lazycell v1.2.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]    Compiling itoa v0.4.3
[INFO] [stderr]    Compiling log v0.4.5
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]    Compiling lock_api v0.1.4
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling bytes v0.4.10
[INFO] [stderr]    Compiling rand_core v0.2.2
[INFO] [stderr]    Compiling mio v0.6.16
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling crossbeam-epoch v0.5.2
[INFO] [stderr]    Compiling crossbeam-deque v0.6.1
[INFO] [stderr]    Compiling tokio-executor v0.1.5
[INFO] [stderr]    Compiling tokio-io v0.1.9
[INFO] [stderr]    Compiling parking_lot v0.6.4
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling tokio-threadpool v0.1.7
[INFO] [stderr]    Compiling tokio-current-thread v0.1.3
[INFO] [stderr]    Compiling tokio-timer v0.2.7
[INFO] [stderr]    Compiling syn v0.15.11
[INFO] [stderr]    Compiling tokio-reactor v0.1.6
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling tokio-async-await v0.1.4
[INFO] [stderr]    Compiling tokio-tcp v0.1.2
[INFO] [stderr]    Compiling tokio-uds v0.2.2
[INFO] [stderr]    Compiling tokio-fs v0.1.3
[INFO] [stderr]    Compiling tokio-udp v0.1.2
[INFO] [stderr]    Compiling tokio v0.1.11
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling serde_json v1.0.32
[INFO] [stderr]    Compiling remq v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(await_macro, async_await, futures_api)]
[INFO] [stdout]   |            ^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: subsumed by `.await` syntax
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(await_macro, async_await, futures_api)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `remq` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "51058ee53da84d6b11099ed1d897f13be24a62ec5e2cf1fe7192bc3eb7f6bbff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51058ee53da84d6b11099ed1d897f13be24a62ec5e2cf1fe7192bc3eb7f6bbff", kill_on_drop: false }`
[INFO] [stdout] 51058ee53da84d6b11099ed1d897f13be24a62ec5e2cf1fe7192bc3eb7f6bbff