[INFO] fetching crate trait_derive 0.1.0... [INFO] testing trait_derive-0.1.0 against 1.44.0 for beta-1.45-1 [INFO] extracting crate trait_derive 0.1.0 into /workspace/builds/worker-1/source [INFO] validating manifest of crates.io crate trait_derive 0.1.0 on toolchain 1.44.0 [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking crates.io crate trait_derive 0.1.0 [INFO] finished tweaking crates.io crate trait_derive 0.1.0 [INFO] tweaked toml for crates.io crate trait_derive 0.1.0 written to /workspace/builds/worker-1/source/Cargo.toml [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] fb93c0ede8c4c2e7b92fcf8ba1d7c24e51b7031135420fdce00abb8bb82be5d4 [INFO] running `"docker" "start" "-a" "fb93c0ede8c4c2e7b92fcf8ba1d7c24e51b7031135420fdce00abb8bb82be5d4"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling trait_derive_core v0.1.0 [INFO] [stderr] Compiling trait_derive v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stderr] --> src/lib.rs:25:1 [INFO] [stderr] | [INFO] [stderr] 25 | #![feature(proc_macro)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0554`. [INFO] [stderr] error: could not compile `trait_derive`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "fb93c0ede8c4c2e7b92fcf8ba1d7c24e51b7031135420fdce00abb8bb82be5d4"` [INFO] running `"docker" "rm" "-f" "fb93c0ede8c4c2e7b92fcf8ba1d7c24e51b7031135420fdce00abb8bb82be5d4"` [INFO] [stdout] fb93c0ede8c4c2e7b92fcf8ba1d7c24e51b7031135420fdce00abb8bb82be5d4