[INFO] fetching crate ucd-generate 0.3.1...
[INFO] checking ucd-generate-0.3.1 against 1.95.0 for pr-155915
[INFO] extracting crate ucd-generate 0.3.1 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate ucd-generate 0.3.1
[INFO] finished tweaking crates.io crate ucd-generate 0.3.1
[INFO] tweaked toml for crates.io crate ucd-generate 0.3.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ucd-generate 0.3.1 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ucd-generate 0.3.1 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" "+1.95.0" "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 ucd-util v0.2.2
[INFO] [stderr]   Downloaded regex-lite v0.1.0
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 93529b7a10f27de5fb381d981b9841b4883c5e3230bda88a6009e499deee2831
[INFO] running `Command { std: "docker" "start" "-a" "93529b7a10f27de5fb381d981b9841b4883c5e3230bda88a6009e499deee2831", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93529b7a10f27de5fb381d981b9841b4883c5e3230bda88a6009e499deee2831", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93529b7a10f27de5fb381d981b9841b4883c5e3230bda88a6009e499deee2831", kill_on_drop: false }`
[INFO] [stdout] 93529b7a10f27de5fb381d981b9841b4883c5e3230bda88a6009e499deee2831
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 917b4c58b27c1645b28dd983ef13e3b3110d1ddc9af4570c875589b16e54c448
[INFO] running `Command { std: "docker" "start" "-a" "917b4c58b27c1645b28dd983ef13e3b3110d1ddc9af4570c875589b16e54c448", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]    Compiling fst v0.4.7
[INFO] [stderr]     Checking regex-lite v0.1.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ucd-trie v0.1.7
[INFO] [stderr]     Checking ucd-util v0.2.2
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking ucd-parse v0.1.13
[INFO] [stderr]     Checking ucd-generate v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> benches/bench.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[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 `ucd-generate` (bench "bench") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "917b4c58b27c1645b28dd983ef13e3b3110d1ddc9af4570c875589b16e54c448", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "917b4c58b27c1645b28dd983ef13e3b3110d1ddc9af4570c875589b16e54c448", kill_on_drop: false }`
[INFO] [stdout] 917b4c58b27c1645b28dd983ef13e3b3110d1ddc9af4570c875589b16e54c448
