[INFO] fetching crate couchdb-container 0.2.0...
[INFO] testing couchdb-container-0.2.0 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate couchdb-container 0.2.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate couchdb-container 0.2.0
[INFO] finished tweaking crates.io crate couchdb-container 0.2.0
[INFO] tweaked toml for crates.io crate couchdb-container 0.2.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate couchdb-container 0.2.0 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 266 packages to highest compatible versions
[INFO] [stderr]       Adding harbourmaster v0.3.1 (available: v0.5.0)
[INFO] [stderr]       Adding shiplift v0.5.0 (available: v0.7.0)
[INFO] [stderr]       Adding wasi v0.10.0+wasi-snapshot-preview1 (available: v0.10.2+wasi-snapshot-preview1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded percent-encoding v1.0.1
[INFO] [stderr]   Downloaded shiplift v0.5.0
[INFO] [stderr]   Downloaded url v1.7.2
[INFO] [stderr]   Downloaded tokio-io v0.1.13
[INFO] [stderr]   Downloaded crossbeam-queue v0.2.3
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[INFO] [stderr]   Downloaded tokio-tcp v0.1.4
[INFO] [stderr]   Downloaded linked_hash_set v0.1.6
[INFO] [stderr]   Downloaded tokio-uds v0.2.7
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[INFO] [stderr]   Downloaded hex v0.3.2
[INFO] [stderr]   Downloaded itoa v0.4.8
[INFO] [stderr]   Downloaded harbourmaster v0.3.1
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[INFO] [stderr]   Downloaded tokio-udp v0.1.6
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[INFO] [stderr]   Downloaded tokio-openssl v0.6.5
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[INFO] [stderr]   Downloaded hyper-openssl v0.9.2
[INFO] [stderr]   Downloaded pin-project-internal v0.4.30
[INFO] [stderr]   Downloaded tokio-current-thread v0.1.7
[INFO] [stderr]   Downloaded shiplift v0.7.0
[INFO] [stderr]   Downloaded tokio-timer v0.2.13
[INFO] [stderr]   Downloaded bytes v0.5.6
[INFO] [stderr]   Downloaded cargo_toml v1.0.1
[INFO] [stderr]   Downloaded tokio-sync v0.1.8
[INFO] [stderr]   Downloaded pin-project v0.4.30
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.18
[INFO] [stderr]   Downloaded toml v1.1.8+spec-1.1.0
[INFO] [stderr]   Downloaded openssl-sys v0.9.117
[INFO] [stderr]   Downloaded cargo-readme v3.4.1
[INFO] [stderr]   Downloaded hyper v0.12.36
[INFO] [stderr]   Downloaded idna v0.1.5
[INFO] [stderr]   Downloaded futures v0.1.31
[INFO] [stderr]   Downloaded openssl v0.10.81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 3fe1e71b8a4d44230540a89aed0fe5ebea5eb6429f76d81ee8e5c18dcbac4532
[INFO] running `Command { std: "docker" "start" "3fe1e71b8a4d44230540a89aed0fe5ebea5eb6429f76d81ee8e5c18dcbac4532", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3fe1e71b8a4d44230540a89aed0fe5ebea5eb6429f76d81ee8e5c18dcbac4532", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "3fe1e71b8a4d44230540a89aed0fe5ebea5eb6429f76d81ee8e5c18dcbac4532" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3fe1e71b8a4d44230540a89aed0fe5ebea5eb6429f76d81ee8e5c18dcbac4532", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "3fe1e71b8a4d44230540a89aed0fe5ebea5eb6429f76d81ee8e5c18dcbac4532" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.191
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[INFO] [stderr]    Compiling want v0.3.2
[INFO] [stderr]    Compiling tokio-current-thread v0.1.7
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[INFO] [stderr]    Compiling futures v0.3.34
[INFO] [stderr]    Compiling hyper-openssl v0.7.1
[INFO] [stderr]    Compiling tower-layer v0.3.3
[INFO] [stderr]    Compiling iana-time-zone v0.1.65
[INFO] [stderr]    Compiling unicode-bidi v0.3.18
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[INFO] [stderr]    Compiling hyperlocal v0.8.0
[INFO] [stderr]    Compiling chrono v0.4.45
[INFO] [stderr]    Compiling futures_codec v0.4.1
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling url v2.5.8
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling tokio-openssl v0.3.0
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling antidote v1.1.0
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling hyperlocal v0.6.0
[INFO] [stderr]    Compiling rand v0.8.8
[INFO] [stderr]    Compiling shiplift v0.7.0
[INFO] [stderr]    Compiling base64 v0.10.1
[INFO] [stderr]    Compiling shiplift v0.5.0
[INFO] [stderr]    Compiling harbourmaster v0.3.1
[INFO] [stderr]    Compiling couchdb-container v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_await)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[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] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_await)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `couchdb-container` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "3fe1e71b8a4d44230540a89aed0fe5ebea5eb6429f76d81ee8e5c18dcbac4532", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fe1e71b8a4d44230540a89aed0fe5ebea5eb6429f76d81ee8e5c18dcbac4532", kill_on_drop: false }`
[INFO] [stdout] 3fe1e71b8a4d44230540a89aed0fe5ebea5eb6429f76d81ee8e5c18dcbac4532
