[INFO] cloning repository https://github.com/maufl/notrust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/maufl/notrust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaufl%2Fnotrust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaufl%2Fnotrust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0efd1b04bf2b4428e8ec652d655b0ec33a9c7579
[INFO] documenting maufl/notrust 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%2Fmaufl%2Fnotrust" "/workspace/builds/worker-41/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-41/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/maufl/notrust 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/maufl/notrust
[INFO] finished tweaking git repo https://github.com/maufl/notrust
[INFO] tweaked toml for git repo https://github.com/maufl/notrust written to /workspace/builds/worker-41/source/Cargo.toml
[INFO] crate git repo https://github.com/maufl/notrust 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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] 54594267355e1dfb16419b3997f42431f49818c84efe90c887819b541fc386f7
[INFO] running `Command { std: "docker" "start" "-a" "54594267355e1dfb16419b3997f42431f49818c84efe90c887819b541fc386f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "54594267355e1dfb16419b3997f42431f49818c84efe90c887819b541fc386f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54594267355e1dfb16419b3997f42431f49818c84efe90c887819b541fc386f7", kill_on_drop: false }`
[INFO] [stdout] 54594267355e1dfb16419b3997f42431f49818c84efe90c887819b541fc386f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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 }`
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[INFO] running `Command { std: "docker" "start" "-a" "d6c8c39a51cc3649bdcff5bc5cc6af28718d86140d70fbd08cc7bda84aae0634", kill_on_drop: false }`
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[INFO] [stderr]     Checking maildir v0.3.1
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[INFO] [stderr]    Compiling synstructure v0.12.1
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[INFO] [stderr]     Checking bodyparser v0.4.1
[INFO] [stderr]     Checking urlencoded v0.4.1
[INFO] [stderr]    Compiling rental-impl v0.5.5
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking rust-stemmers v1.1.0
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[INFO] [stderr]     Checking tantivy v0.10.2
[INFO] [stderr]  Documenting mailindexer 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(option_result_contains)]
[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 `mailindexer`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name mailindexer 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 chrono=/opt/rustwide/target/debug/deps/libchrono-6ed18a109405842e.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-526cd082a73c1f72.rmeta --extern iron=/opt/rustwide/target/debug/deps/libiron-3159a0cbca3536c1.rmeta --extern maildir=/opt/rustwide/target/debug/deps/libmaildir-fc90999aa59f9349.rmeta --extern mailparse=/opt/rustwide/target/debug/deps/libmailparse-2bdf88e47aac9961.rmeta --extern mount=/opt/rustwide/target/debug/deps/libmount-6210a9893b8f9de3.rmeta --extern persistent=/opt/rustwide/target/debug/deps/libpersistent-a407a8367f71b1e2.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-bd15118f62343884.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-97a6176ae561650c.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-059309cf376e50dd.rmeta --extern staticfile=/opt/rustwide/target/debug/deps/libstaticfile-899444c6f0bff4ae.rmeta --extern tantivy=/opt/rustwide/target/debug/deps/libtantivy-fc5b75b78d493033.rmeta --extern urlencoded=/opt/rustwide/target/debug/deps/liburlencoded-fb95f6cf8ea6d0f0.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "d6c8c39a51cc3649bdcff5bc5cc6af28718d86140d70fbd08cc7bda84aae0634", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6c8c39a51cc3649bdcff5bc5cc6af28718d86140d70fbd08cc7bda84aae0634", kill_on_drop: false }`
[INFO] [stdout] d6c8c39a51cc3649bdcff5bc5cc6af28718d86140d70fbd08cc7bda84aae0634
