[INFO] fetching crate unicode_names2 2.0.0...
[INFO] testing unicode_names2-2.0.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate unicode_names2 2.0.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate unicode_names2 2.0.0
[INFO] finished tweaking crates.io crate unicode_names2 2.0.0
[INFO] tweaked toml for crates.io crate unicode_names2 2.0.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate unicode_names2 2.0.0 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 unicode_names2 2.0.0 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 getopts v0.2.23
[INFO] [stderr]   Downloaded unicode_names2_generator v2.0.0
[INFO] [stderr]   Downloaded unicode_names2_macros v1.1.0
[INFO] [stderr]   Downloaded regex v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] c86f02aaebf3da4b842c3a7bc2db8d785c52be22b455bc8e64cf291dd6bdc23c
[INFO] running `Command { std: "docker" "start" "-a" "c86f02aaebf3da4b842c3a7bc2db8d785c52be22b455bc8e64cf291dd6bdc23c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c86f02aaebf3da4b842c3a7bc2db8d785c52be22b455bc8e64cf291dd6bdc23c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c86f02aaebf3da4b842c3a7bc2db8d785c52be22b455bc8e64cf291dd6bdc23c", kill_on_drop: false }`
[INFO] [stdout] c86f02aaebf3da4b842c3a7bc2db8d785c52be22b455bc8e64cf291dd6bdc23c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 085fc973581562ebc30823440258c80d2306e57dcd99e14a2906aef5d7f01f52
[INFO] running `Command { std: "docker" "start" "-a" "085fc973581562ebc30823440258c80d2306e57dcd99e14a2906aef5d7f01f52", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]    Compiling phf_shared v0.11.2
[INFO] [stderr]    Compiling phf v0.11.2
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling phf_generator v0.11.2
[INFO] [stderr]    Compiling phf_codegen v0.11.2
[INFO] [stderr]    Compiling unicode_names2_generator v2.0.0
[INFO] [stderr]    Compiling unicode_names2 v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.68s
[INFO] running `Command { std: "docker" "inspect" "085fc973581562ebc30823440258c80d2306e57dcd99e14a2906aef5d7f01f52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "085fc973581562ebc30823440258c80d2306e57dcd99e14a2906aef5d7f01f52", kill_on_drop: false }`
[INFO] [stdout] 085fc973581562ebc30823440258c80d2306e57dcd99e14a2906aef5d7f01f52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d4c0dd19597244aa3647734c768e00bf80e347b133ca55410ee0dbf1794c57b
[INFO] running `Command { std: "docker" "start" "-a" "0d4c0dd19597244aa3647734c768e00bf80e347b133ca55410ee0dbf1794c57b", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-width v0.2.1
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling regex v1.0.0
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling getopts v0.2.23
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand_xorshift v0.3.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.52
[INFO] [stderr]    Compiling phf_generator v0.11.2
[INFO] [stderr]    Compiling phf_codegen v0.11.2
[INFO] [stderr]    Compiling unicode_names2_generator v1.3.0
[INFO] [stderr]    Compiling unicode_names2_generator v2.0.0
[INFO] [stderr]    Compiling unicode_names2 v1.3.0
[INFO] [stderr]    Compiling unicode_names2 v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling unicode_names2_macros v1.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:71:19
[INFO] [stdout]    |
[INFO] [stdout] 71 | #![cfg_attr(test, 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 `unicode_names2` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "0d4c0dd19597244aa3647734c768e00bf80e347b133ca55410ee0dbf1794c57b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d4c0dd19597244aa3647734c768e00bf80e347b133ca55410ee0dbf1794c57b", kill_on_drop: false }`
[INFO] [stdout] 0d4c0dd19597244aa3647734c768e00bf80e347b133ca55410ee0dbf1794c57b