[INFO] fetching crate rsql-rs 0.2.0...
[INFO] documenting rsql-rs-0.2.0 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate rsql-rs 0.2.0 into /workspace/builds/worker-39/source
[INFO] validating manifest of crates.io crate rsql-rs 0.2.0 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] removed /workspace/builds/worker-39/source/rust-toolchain
[INFO] started tweaking crates.io crate rsql-rs 0.2.0
[INFO] finished tweaking crates.io crate rsql-rs 0.2.0
[INFO] tweaked toml for crates.io crate rsql-rs 0.2.0 written to /workspace/builds/worker-39/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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" "+1.54.0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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] 6f0c1e7c0c174430553012c1bcdf535cd86587e9b3418287273c779155a7b6b1
[INFO] running `Command { std: "docker" "start" "-a" "6f0c1e7c0c174430553012c1bcdf535cd86587e9b3418287273c779155a7b6b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f0c1e7c0c174430553012c1bcdf535cd86587e9b3418287273c779155a7b6b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f0c1e7c0c174430553012c1bcdf535cd86587e9b3418287273c779155a7b6b1", kill_on_drop: false }`
[INFO] [stdout] 6f0c1e7c0c174430553012c1bcdf535cd86587e9b3418287273c779155a7b6b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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] bb597d8fd9726f06a991560aaa659bbb9f7bd0e2bc1a8358c4b9aa70c8d77cb5
[INFO] running `Command { std: "docker" "start" "-a" "bb597d8fd9726f06a991560aaa659bbb9f7bd0e2bc1a8358c4b9aa70c8d77cb5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling frunk_core v0.3.2
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling anyhow v1.0.42
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking strum v0.16.0
[INFO] [stderr]    Compiling pest v2.0.2
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling pest_meta v2.0.3
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling pest_generator v2.0.0
[INFO] [stderr]    Compiling frunk_proc_macro_helpers v0.0.5
[INFO] [stderr]    Compiling pest_derive v2.0.1
[INFO] [stderr]    Compiling frunk_proc_macros_impl v0.0.5
[INFO] [stderr]    Compiling frunk_derives v0.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling strum_macros v0.16.0
[INFO] [stderr]     Checking frunk_proc_macros v0.0.5
[INFO] [stderr]     Checking frunk v0.3.2
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]     Checking serde v1.0.127
[INFO] [stderr]     Checking serde_json v1.0.66
[INFO] [stderr]  Documenting rsql-rs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(backtrace)]
[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 `rsql-rs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name rsql_rs src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-c71486e08dde7454.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-05278d9a8f10c56e.rmeta --extern frunk=/opt/rustwide/target/debug/deps/libfrunk-cbb8a63599b19c63.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-acd7d23482fe8b54.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-f8abb66ffc16068c.rmeta --extern pest=/opt/rustwide/target/debug/deps/libpest-0b6b838648b5968f.rmeta --extern pest_derive=/opt/rustwide/target/debug/deps/libpest_derive-9ecfe0743c1df6d5.so --extern regex=/opt/rustwide/target/debug/deps/libregex-46bf5b535d6b6b09.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-d137dcd4290f0b31.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-f6e5ca167e75437b.rmeta --extern strum=/opt/rustwide/target/debug/deps/libstrum-e97cd662994a60d2.rmeta --extern strum_macros=/opt/rustwide/target/debug/deps/libstrum_macros-0a29212061309588.so --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-25bff3e6010c57a3.rmeta --cap-lints=warn --crate-version 0.2.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "bb597d8fd9726f06a991560aaa659bbb9f7bd0e2bc1a8358c4b9aa70c8d77cb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb597d8fd9726f06a991560aaa659bbb9f7bd0e2bc1a8358c4b9aa70c8d77cb5", kill_on_drop: false }`
[INFO] [stdout] bb597d8fd9726f06a991560aaa659bbb9f7bd0e2bc1a8358c4b9aa70c8d77cb5
