[INFO] fetching crate cpclib-cpr 0.8.0...
[INFO] testing cpclib-cpr-0.8.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate cpclib-cpr 0.8.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate cpclib-cpr 0.8.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate cpclib-cpr 0.8.0
[INFO] tweaked toml for crates.io crate cpclib-cpr 0.8.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate cpclib-cpr 0.8.0 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 cpclib-cpr 0.8.0 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 bitfield v0.14.0
[INFO] [stderr]   Downloaded resolve-path v0.1.0
[INFO] [stderr]   Downloaded cpclib-common v0.10.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 2703b254c3c481102d915adb9e5cd6613e6c95605b351f2f069dbe61505643fe
[INFO] running `Command { std: "docker" "start" "-a" "2703b254c3c481102d915adb9e5cd6613e6c95605b351f2f069dbe61505643fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2703b254c3c481102d915adb9e5cd6613e6c95605b351f2f069dbe61505643fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2703b254c3c481102d915adb9e5cd6613e6c95605b351f2f069dbe61505643fe", kill_on_drop: false }`
[INFO] [stdout] 2703b254c3c481102d915adb9e5cd6613e6c95605b351f2f069dbe61505643fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 81c3ae7b4c9900c6b77a21093bc0b054d8a20bc0de3e399de46acc51f9e74414
[INFO] running `Command { std: "docker" "start" "-a" "81c3ae7b4c9900c6b77a21093bc0b054d8a20bc0de3e399de46acc51f9e74414", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling camino v1.1.10
[INFO] [stderr]    Compiling funty v2.0.0
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling dirs-sys v0.3.7
[INFO] [stderr]    Compiling wyz v0.5.1
[INFO] [stderr]    Compiling bitfield v0.14.0
[INFO] [stderr]    Compiling dirs v4.0.0
[INFO] [stderr]    Compiling resolve-path v0.1.0
[INFO] [stderr]    Compiling winnow v0.6.26
[INFO] [stderr]    Compiling bitflags v2.9.1
[INFO] [stderr]    Compiling smol_str v0.2.2
[INFO] [stderr]    Compiling bitvec v1.0.1
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling cpclib-common v0.10.0
[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/cpclib-common-0.10.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_take)]
[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 `cpclib-common` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "81c3ae7b4c9900c6b77a21093bc0b054d8a20bc0de3e399de46acc51f9e74414", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81c3ae7b4c9900c6b77a21093bc0b054d8a20bc0de3e399de46acc51f9e74414", kill_on_drop: false }`
[INFO] [stdout] 81c3ae7b4c9900c6b77a21093bc0b054d8a20bc0de3e399de46acc51f9e74414