[INFO] cloning repository https://github.com/mattmahn/bitsquatting
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mattmahn/bitsquatting" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattmahn%2Fbitsquatting", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattmahn%2Fbitsquatting'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ad3230519f97197aa6bddc508aea6b702d9bbde4
[INFO] documenting mattmahn/bitsquatting against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattmahn%2Fbitsquatting" "/workspace/builds/worker-40/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-40/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mattmahn/bitsquatting on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mattmahn/bitsquatting
[INFO] finished tweaking git repo https://github.com/mattmahn/bitsquatting
[INFO] tweaked toml for git repo https://github.com/mattmahn/bitsquatting written to /workspace/builds/worker-40/source/Cargo.toml
[INFO] crate git repo https://github.com/mattmahn/bitsquatting already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]   Downloaded redox_syscall v0.2.6
[INFO] [stderr]   Downloaded tracing-bunyan-formatter v0.1.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7fef0862657c6308065de1faf2643619b00077fb1ff9fa5dc0f5858dca16c91c
[INFO] running `Command { std: "docker" "start" "-a" "7fef0862657c6308065de1faf2643619b00077fb1ff9fa5dc0f5858dca16c91c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7fef0862657c6308065de1faf2643619b00077fb1ff9fa5dc0f5858dca16c91c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fef0862657c6308065de1faf2643619b00077fb1ff9fa5dc0f5858dca16c91c", kill_on_drop: false }`
[INFO] [stdout] 7fef0862657c6308065de1faf2643619b00077fb1ff9fa5dc0f5858dca16c91c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f239cc96f37a80d5c30d0bba086d54c342d08fc0664012b80d1900f9e34272f
[INFO] running `Command { std: "docker" "start" "-a" "8f239cc96f37a80d5c30d0bba086d54c342d08fc0664012b80d1900f9e34272f", kill_on_drop: false }`
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[INFO] [stderr]     Checking actix-web v4.0.0-beta.6
[INFO] [stderr]     Checking tracing-actix-web v0.4.0-beta.1
[INFO] [stderr]  Documenting bitsquatting v0.1.0 (/opt/rustwide/workdir)
[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(async_closure)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `bitsquatting`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name bitsquatting src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern actix_web=/opt/rustwide/target/debug/deps/libactix_web-5d1f69a597c6f917.rmeta --extern opentelemetry=/opt/rustwide/target/debug/deps/libopentelemetry-dede2d76d9acb7b5.rmeta --extern opentelemetry_jaeger=/opt/rustwide/target/debug/deps/libopentelemetry_jaeger-d162a9ab6974c1d1.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-12560209037bfd96.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-23cd4ee1543c1fda.rmeta --extern tracing_actix_web=/opt/rustwide/target/debug/deps/libtracing_actix_web-b3977a6ed6ad3880.rmeta --extern tracing_bunyan_formatter=/opt/rustwide/target/debug/deps/libtracing_bunyan_formatter-85ee8a09450f3a6d.rmeta --extern tracing_opentelemetry=/opt/rustwide/target/debug/deps/libtracing_opentelemetry-9dbe428477906d16.rmeta --extern tracing_subscriber=/opt/rustwide/target/debug/deps/libtracing_subscriber-8d61006a2a234156.rmeta --extern trust_dns_resolver=/opt/rustwide/target/debug/deps/libtrust_dns_resolver-a0c104b22058ef78.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "8f239cc96f37a80d5c30d0bba086d54c342d08fc0664012b80d1900f9e34272f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f239cc96f37a80d5c30d0bba086d54c342d08fc0664012b80d1900f9e34272f", kill_on_drop: false }`
[INFO] [stdout] 8f239cc96f37a80d5c30d0bba086d54c342d08fc0664012b80d1900f9e34272f
