[INFO] fetching crate sexprs-data-structures 0.0.5...
[INFO] testing sexprs-data-structures-0.0.5 against 1.90.0 for beta-1.91-3
[INFO] extracting crate sexprs-data-structures 0.0.5 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate sexprs-data-structures 0.0.5
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate sexprs-data-structures 0.0.5
[INFO] tweaked toml for crates.io crate sexprs-data-structures 0.0.5 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sexprs-data-structures 0.0.5 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sexprs-data-structures 0.0.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unique-pointer v0.5.0
[INFO] [stderr]   Downloaded terminal_size v0.2.6
[INFO] [stderr]   Downloaded sexprs-util v0.0.5
[INFO] [stderr]   Downloaded k9 v0.12.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c9d7ad129f60c2dd6c4dfce848c22c834b7f8340aabe7d92270e038f587f70b
[INFO] running `Command { std: "docker" "start" "-a" "3c9d7ad129f60c2dd6c4dfce848c22c834b7f8340aabe7d92270e038f587f70b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c9d7ad129f60c2dd6c4dfce848c22c834b7f8340aabe7d92270e038f587f70b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c9d7ad129f60c2dd6c4dfce848c22c834b7f8340aabe7d92270e038f587f70b", kill_on_drop: false }`
[INFO] [stdout] 3c9d7ad129f60c2dd6c4dfce848c22c834b7f8340aabe7d92270e038f587f70b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce520606eb5427f8aef97741a0765946bb7d2e9a2eef41f94256a69a9e9087bb
[INFO] running `Command { std: "docker" "start" "-a" "ce520606eb5427f8aef97741a0765946bb7d2e9a2eef41f94256a69a9e9087bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling sexprs-util v0.0.5
[INFO] [stderr]    Compiling unique-pointer v0.5.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/unique-pointer-0.5.0/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(intra_doc_pointers)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `unique-pointer` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "ce520606eb5427f8aef97741a0765946bb7d2e9a2eef41f94256a69a9e9087bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce520606eb5427f8aef97741a0765946bb7d2e9a2eef41f94256a69a9e9087bb", kill_on_drop: false }`
[INFO] [stdout] ce520606eb5427f8aef97741a0765946bb7d2e9a2eef41f94256a69a9e9087bb