[INFO] fetching crate riker-timer 0.2.4...
[INFO] documenting riker-timer-0.2.4 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate riker-timer 0.2.4 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate riker-timer 0.2.4 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate riker-timer 0.2.4
[INFO] finished tweaking crates.io crate riker-timer 0.2.4
[INFO] tweaked toml for crates.io crate riker-timer 0.2.4 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded uuid v0.6.5
[INFO] [stderr]   Downloaded rust-ini v0.13.0
[INFO] [stderr]   Downloaded linked-hash-map v0.3.0
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[INFO] [stderr]   Downloaded serde_test v0.8.23
[INFO] [stderr]   Downloaded config v0.9.3
[INFO] [stderr]   Downloaded riker-mapvec v0.2.4
[INFO] [stderr]   Downloaded runtime-fmt v0.3.0
[INFO] [stderr]   Downloaded riker-testkit v0.1.0
[INFO] [stderr]   Downloaded riker-log v0.2.4
[INFO] [stderr]   Downloaded riker-default v0.2.4
[INFO] [stderr]   Downloaded riker-timer v0.2.4
[INFO] [stderr]   Downloaded riker-deadletter v0.2.4
[INFO] [stderr]   Downloaded riker-dispatcher v0.2.4
[INFO] [stderr]   Downloaded riker v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d6051bee2b48604ea5cb59332472017fd2d97238e081f45ada54468cbc2ce70
[INFO] running `Command { std: "docker" "start" "-a" "9d6051bee2b48604ea5cb59332472017fd2d97238e081f45ada54468cbc2ce70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d6051bee2b48604ea5cb59332472017fd2d97238e081f45ada54468cbc2ce70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d6051bee2b48604ea5cb59332472017fd2d97238e081f45ada54468cbc2ce70", kill_on_drop: false }`
[INFO] [stdout] 9d6051bee2b48604ea5cb59332472017fd2d97238e081f45ada54468cbc2ce70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "RUSTDOCFLAGS=--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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d3af773f477d3d645fc26c97250145095cee16a61bafb02854fb3e35b9d78a7
[INFO] running `Command { std: "docker" "start" "-a" "5d3af773f477d3d645fc26c97250145095cee16a61bafb02854fb3e35b9d78a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking serde v0.8.23
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[INFO] [stderr]    Compiling serde_json v1.0.81
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[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.19
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[INFO] [stderr]     Checking ucd-util v0.1.8
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking utf8-ranges v1.0.5
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[INFO] [stderr]     Checking cfg-if v1.0.0
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[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
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[INFO] [stderr]     Checking regex v1.5.6
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[INFO] [stderr]     Checking num-traits v0.1.43
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[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/riker-0.2.4/src/lib.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |         await_macro,
[INFO] [stdout]   |         ^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: subsumed by `.await` syntax
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: incorrect use of `await`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/riker-0.2.4/src/kernel/kernel.rs:257:29
[INFO] [stdout]     |
[INFO] [stdout] 257 |                     let _ = await!(AssertUnwindSafe(f).catch_unwind());
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: `await` is a postfix operation: `AssertUnwindSafe(f).catch_unwind().await`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/riker-0.2.4/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | / #![feature(
[INFO] [stdout] 3 | |         async_await,
[INFO] [stdout] 4 | |         await_macro,
[INFO] [stdout] 5 | |         futures_api,
[INFO] [stdout] 6 | |         arbitrary_self_types
[INFO] [stdout] 7 | | )]
[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[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/riker-0.2.4/src/lib.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |         futures_api,
[INFO] [stdout]   |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 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 `riker` due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "5d3af773f477d3d645fc26c97250145095cee16a61bafb02854fb3e35b9d78a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d3af773f477d3d645fc26c97250145095cee16a61bafb02854fb3e35b9d78a7", kill_on_drop: false }`
[INFO] [stdout] 5d3af773f477d3d645fc26c97250145095cee16a61bafb02854fb3e35b9d78a7